We report the growth of high quality Cu doped ZnO thin films by magnetron sputtering. High level of Cu doping has been achieved at higher growth temperature. Room temperature ferromagnetism, with magnetic moment initially increasing and then decreasing with Cu content, has been observed in the ...

Epitaxial YBa2Cu3O7 films were grown on several microwave substrates. Surface resistance and penetration depth measurements were performed to determine the quality of these films. Here the properties of these films on key microwave substrates are describe...

Preliminary results are presented on the growth and characterization of Cu-In-Se-S thin films formed by reaction of Cu-In layers with a H2Se/H2S gas mixture. The approach was to first develop a process to grow device quality CuInS2 films by reaction of a ...

The effect of microstructure and purity on the native oxidation of Cu was studied by using angle-resolved X-ray photoelectron spectroscopy (AR-XPS) and spectroscopic ellipsometry (SE). A high quality copper film prepared by ion beam deposition under a substrate bias voltage of ?50 V (IBD Cu ...

Undoped and Cu doped nickel oxide thin films were grown on glass substrate by chemical spray pyrolysis technique using NiCl2.6H2O as the precursor solution. Cu concentrations in the films were varied from 0-10%. The effect of doping on the properties such as microstructure and resistivity were studied. Structural ...

The characteristics are investigated of high temperature superconducting YBa2Cu3O7 (YBCO) films grown on LaAlO3 (LAO) substrates being exposed a different number of times to YBCO film deposition and acid-solution-based cleaning procedures. Possible mechanisms of degradation of the substrate surface quality ...

This program is examining a promising new spray pyrolysis technique to deposit thin films of CuInSe sub 2 for terrestrial solar cell applications. This technique is very attractive for depositing high quality thin film CuInSe sub 2 solar cells due to its ...

The current method of growing large-area graphene on polycrystalline Cu surfaces (foils or thin films) and its transfer to arbitrary substrates is technologically attractive. However, the quality of graphene can be improved significantly by growing it on single-crystal Cu surfaces. Here we show that high ...

... has been studied for flux pinning enhancements in melt ... to the flux pinning enhancement at high ... is due to the poor crystal quality (strained YBCO ...

This dissertation covers my research in four steps: basic understanding of the theory of superconductors, development of the experimental setup, deposition of high temperature superconducting thin films (HTSTF) on metallic and nonmetallic substrates by laser ablation, and characterization HTSTFs on metallic and nonmetallic substrates. High quality HTSTFs ...

... Accession Number : ADA461891. Title : Correlation Between the XPS Peak Shapes of Y(1)Ba(2)Cu(3)O(7-x )and Film Quality (Postprint). ...

The authors report the synthesis of CuBO2, a p-type transparent oxide belonging to Cu-delafossite family. High quality thin films of CuBO2 were deposited on c-plane sapphire substrates by pulsed laser deposition technique. Detailed structural, optical, and electrical characterizations on these ...

High quality Ag-doped YBa{sub 2}Cu{sub 3}O{sub 7-x} (YBCO) thin films have been grown by laser ablation on bare sapphire. This work demonstrates that Ag-doping can be used as very convenient means to realize good quality YBCO films on highly coveted sapphire substrates for microwave ...

This program is examining a promising new spray pyrolysis technique to deposit thin films of CuInSe sub 2 for terrestrial solar cell applications. This technique is very attractive for depositing high quality thin film CuInSe sub 2 solar cells due to its ...

We report the effect of silver addition on the surface quality of rf-sputtered Y-Ba-Cu-O thin films. The Y-Ba-Cu-O-Ag films appear to have very smooth surfaces even if the post-annealing step is employed. The surface roughness of our {ital ex} {ital situ} grown Y-Ba-Cu-O-Ag ...

The results of the research conducted during the first year of this program (12/90 - 8/91) are summarized below: (a) An electrodeposition system has been assembled which is capable of producing high quality multilayered thin films. (b) Cu-Ni multilayered ...

We have investigated the fabrication of thin-film superconductors by Cu-ion implantation into initially Cu-deficient Y(BaF{sub 2})Cu thin films. The precursor films were co-evaporated on SrTiO{sub 3} substrates, and subsequently implanted to various doses with 400 keV {sup ...

We have investigated the fabrication of thin-film superconductors by Cu-ion implantation into initially Cu-deficient Y(BaF{sub 2})Cu thin films. The precursor films were co-evaporated on SrTiO{sub 3} substrates, and subsequently implanted to various doses with 400 keV {sup ...

In this work, superconducting YBa2Cu3O7 (YBCO) thin films were grown on different substrates under the same conditions and their behaviours were investigated. At a higher substrate temperature, because of the occurrence of a chemical reaction between the substrate and film, the film quality was ...

correlated the development of stress in Cu/Sn films with whisker formation.28 ... to examine stress evolution in Sn in Cu/Sn bimetal films ...

The formation chemistry and growth dynamics of thin-film CuInSe(2) grown by physical vapor deposition have been considered along the reaction path leading from the Cu(x)Se:CuInSe(2) two-phase region to single-phase CuInSe(2). The (Cu(2)Se)(sub beta)(CuInSe(2))(sub 1-beta) ...

High temperature superconducting thin films have been studied by transmission electron microscopy. Observations showed many superconducting and non-superconducting particles formed on the YBa2Cu3O7 (YBCO) thin films synthesized by pulsed laser deposition, which increased the surface microwave resistance of the ...

To improve the quality of CuInSe2 (CIS) thin films fabricated by a non-vacuum, nanoparticle-based approach, in this study, two categories of nanoparticles, Cu (InGa) Se2 (CIGS) nanoparticles and copper selenide (Cu--Se) with indium selenide (In--Se) nanoparticles are investigated. It is found ...

We have examined the problem of substrate temperature changes during the growth of YBa2CU307-x (YBCO) thin films on LaA103 when the substrate is radiatively heated. Substrate temperature variations sufficient to degrade film quality occur unless the heate...

The continuous monitoring of the conversion, of Y, Cu and BaF2 precursors to form superconductor thin films has been achieved using a fluorine-specific-ion electrode immersed in an effluent gas-washing cell. High-quality thin films of YBa2Cu3O7- x deposited on NdGaO3, LaA103 and LaGaO3, have ...

The methods used to grow pseudomorphic fcc films of Ni, Co, and Fe on Cu(001) are described. High-quality epitaxial films are produced by vapor deposition in an ultra-high vacuum environment on suitably prepared substrates. The morphology of these films is characterized using a variety of ...

CuInSe2 (CIS nanostructured) thin films were prepared by ion exchange method at room temperature on ITO coated glass substrates in an alkaline medium. The as prepared thin films were irradiated by 120 MeV Au9+ swift heavy ion (SHI) at 5�1011 and 5�1012 ions/cm2 fluence respectively. To study the effect of irradiation, the pristine ...

We present work done on EuO films with thicknesses varying from 10 to 60 A? grown as a stepped wedge on Si/SiO2/Cr(20 A?)/Cu(90 A?) and capped with Y(20 A?)/Al(80 A?). The films were characterized by x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) at the europium M5 and copper L3 edges. The ...

We present work done on EuO films with thicknesses varying from 10 to 60 A grown as a stepped wedge on Si/Cr(20 {angstrom})/Cu(90 {angstrom}) and capped with Y(20 {angstrom})/Al(80 {angstrom}). The films were characterized by x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) at the europium M{sub 5} and ...

We show that a small doping of Tl2O3 in the bulk material significantly promotes the formation of superconducting HgBaCaCuO films during encapsulated post-annealing. We also demonstrate that by using this method good quality superconducting HgBa2CaCu2O6+? films can directly be prepared using ...

The electrochemical deposition of Ga and Cu-Ga alloys from the deep eutectic solvent choline chloride/urea (Reline) is investigated to prepare CuGaSe(2) (CGS) semiconductors for their use in thin film solar cells. Ga electrodeposition is difficult from aqueous solution due to its low standard potential and the interfering hydrogen ...

A number of different ink and deposition approaches have been used for the deposition of CuInSe2 (CIS), Cu(In,Ga)Se2 (CIGS), and CdTe films. For CIS and CIGS, soluble precursors containing Cu, In, and Ga have been developed and used in two ways to produce CIS films. In the first, In-containing ...

Characteristics of the electron-doped-type Nd(sub 2-x)Ce(sub x)CuO4 system and substituted Bi-system were studied using the high quality thin film samples grown by rf magnetron sputtering and/or subsequent heat treatment. The Nd(sub 2-x)Ce(sub x)CuO4 samp...

The quality superconducting YBa2Cu3O7 films and YBa2Cu3O7/NdBa2Cu3O7 multilayered film structures have been grown by pulsed laser deposition on metallic templates with magnesium oxide (MgO) buffer layer grown by incline substrate deposition. Different supplementary buffer ...

The fabrication and measurement of 5 GHz microstrip resonators from a series of YBa2Cu3O(7-delta) thin films grown on LaAlO3(001) substrates by in situ laser ablation are reported. The correlations between unloaded quality factor and various film properties are studied. It is found that in general, higher ...

We have investigated in situ spectroscopic ellipsometry in the case of atomic layer-by-layer metalorganic chemical vapor deposition of YBa2Cu3Ox (YBCO) thin films. We have demonstrated the effectiveness of spectroscopic measurement from the relationship between the film properties and trajectories of the pseudodielectric function of ...

We report on the graphoepitaxial growth of YBa2Cu3O7 (YBCO) thin films on LaAlO3 (LAO) substrates textured with submicron features. This is the first use of a substrate microstructure to template and control the morphology of a thin film. Two-dimensional close-packed crystalline monolayers of polystyrene spheres 482 nm in diameter are ...

The electrochemical capacitance-voltage (ECV) method and the focused-ion beam (FIB) process were adopted for the evaluation of device-quality Cu(InGa)Se2 (CIGS) films. The profiling of the carrier concentrations and the structural properties were successfully carried out by the ECV and FIB methods, respectively. It was found from the ...

High-quality, c-axis-oriented La2CuO4 thin films have been fabricated by the pulsed laser ablation technique. Superconductivity has been successfully induced in the films after chemical oxidation using sodium hypochlorite solution as oxidizing agent. The structural properties, surface morphology, and electrical ...

Copper nitride thin films were deposited on glass substrates by reactive DC (direct current) magnetron sputtering with 0.8Pa N2-gas partial pressure (the total pressure was 1Pa), 100�C substrate temperature and different DC powers. X-ray diffraction measurements show that the films are composed of Cu3N crystallites with anti-ReO3 ...

Cu2ZnSnS4 (CZTS) thin films were prepared by post-annealing films of metal sulfides of Cu2S, ZnS and SnS2 precursors deposited on soda-lime glass substrates by photo-chemical deposition (PCD) from aqueous solution containing CuSO4, ZnSO4, SnSO4 and Na2S2O3. In this study, sulfurization was ...

Controlling the thickness and uniformity during growth of multilayer graphene is an important goal. Here we report the synthesis of large-area monolayer and multilayer, particularly bilayer, graphene films on Cu-Ni alloy foils by chemical vapor deposition with methane and hydrogen gas as precursors. The dependence of the initial stages of graphene growth ...

Thick (20--300 /mu/m) freestanding polycrystalline films of ceramic YBa/sub 2/Cu/sub 3/O/sub 6.9/ have been obtained by resintering YBa/sub 2/Cu/sub 3/O/sub 6.9/ powder in air after screen printing onto fused silica substrates. An interfacial reaction occurs between the powder and the silica substrate which efficiently detaches the ...

The quality of epitaxially grown superconducting thin films is dependent on the nature of the substrate surface. In this study, the surface of oriented SrTiO{sub 3} single crystals was modified by mechanical polishing, thermal annealing and chemical etching. A study of the YBa{sub 2}Cu{sub 3}O{sub 7-x} thin films ...

We present experimental results obtained for RBa2Cu3 O7-x (R=Y,Er) expitaxial thin films obtained through pulsed laser deposition (PLD) and grown on yttria stabilized zirconia (YSZ) and SrTiO3 (STO) substrates. The films have been deposited by using low deposition rates (f=4 Hz) and with control of the film surface ...

In this paper, we report on the growth of Y-123 thin films on single crystal and randomly-oriented polycrystalline YSZ substrates. High quality epitaxial Y-123 thin films were grown on (100) YSZ in order to identify the factors that determine the optimum ...

The quality of high temperature superconducting thin films is dependent on the structure of the substrate used. The present work examines the effects of radiation damaged SrTiO3 substrates on the properties of Y1 Ba2 Cu3 O7 thin film superconductors. Prio...

This is the final technical report of a research program on copper indium diselenide films. The objectives of this program were to prepare device-quality, thin-film, polycrystalline CuInSe sub 2 by low-cost techniques and to produce heterojunction solar c...

A low cost spin coating route of fabricating CuInS2 polycrystalline thin films by reactive sintering method was put forward. The ink for spin coating was optimized by pre-reducing the precursor powders in hydrogen, which turned the nanoparticle precursor powders from mixed sulfides into a mixture of CuInS2 and ...

This program is examining a promising new spray pyrolysis technique to deposit thin films of CuInSe/sub 2/ for terrestrial solar cell applications. This technique is very attractive for depositing high quality thin film CuInSe/sub 2/ solar cells due to its inherent simplicity and potential low ...

Patterned copper sulfide (Cu(x)S) microstructures on Si (1�1�1) wafers were successfully fabricated by a relatively simple solution growth method using copper sulfate, ethylenediaminetetraacetate and sodium thiosulfate aqueous solutions as precursors. The Cu(x)S particles were selectively deposited on a patterned self-assembled monolayer of ...

Patterned copper sulfide (Cu_xS) microstructures on Si (1�1�1) wafers were successfully fabricated by a relatively simple solution growth method using copper sulfate, ethylenediaminetetraacetate and sodium thiosulfate aqueous solutions as precursors. The Cu_xS particles were selectively deposited on a ...

Wetting in a system where the kinetics of drop spreading are controlled by the rate of formation of a precursor film is modeled for the first time at the atomistic scale. Molecular dynamics simulations of Pb(l) wetting Cu(111) and Cu(100) show that a precursor film of atomic thickness evolves and spreads ...

CuInSe2 (CIS) films with good crystalline quality were synthesized by electrodeposition followed by annealing in Se vapor at 530 �C. The morphology, composition, crystal structure, optical and electrical properties of the CIS films were investigated by scanning electron microscopy, energy dispersive spectroscopy, ...

Direct current superconducting quantum interferometers (SQUIDs) based on HTSC thin films have been measured and characterized. The thin films used were of different quality: (1) Granular films on Sapphire substrates, prepared either by e-gun evaporation, by laser ablation or by MOCVD (metal oxide chemical vapor ...

While copper damascene processes currently utilize physically vapor deposited (PVD) Cu seed layers, the continued scaling of interconnect feature sizes in advanced nanoelectronic devices requires the development of a more conformal, controllable Cu seed layer technology for use with electrochemically deposited (ECD) copper interconnects. Atomic layer ...

Pulsed-laser deposition has been demonstrated to be an advantageous technique for producing high-quality superconducting YBCO thin films. In this technique, the quality of the YBCO thin films is strongly dependent on various processing conditions such as substrate temperature, laser energy density, ambient oxygen ...

The physicochemical properties of YBa2Cu3O7? ? high-temperature superconductor exclude designing standard magnetron sputterers and adopting standard film growth conditions that would ensure good and highly reproducible results. A simple and flexible magnetron sputterer making it possible to grow high-quality films ...

Thin films of high-temperature superconductors were made by sputtering and by co-evaporation. The former method produced thin films of YBaCuO which were completely superconducting at 82 K with 6 K transition widths. A new method was developed at the University of Texas which produced films of ...

Thin films of high temperature superconductors were made by sputtering and by co-evaporation. The former method produced thin films of YBaCuO which were completely superconducting at 82 K with 6 K transition widths. A new method was developed at the University of Texas which produced films of ...

Cu2ZnSnS4 (CZTS) thin films were prepared by simultaneous sputtering of metallic targets and sulfurizing a metallic precursor under elemental sulfur atmosphere in a sealed tube. Subsequently, they were applied to the fabrication of thin film solar cells. The precursors with desired compositional ratio and thickness were obtained by ...

High quality superconducting thin films of the high Tc compound YBa/sub 2/Cu/sub 3/O/sub 7/ have been prepared on sapphire using a new, simple method that combines d.c. magnetron sputtering from a single target and evaporation from a heated source. The method should be especially suitable for depositing thin films ...

Enhanced quality thin films of Cu[sub w](In,Ga[sub y])Se[sub z] for semiconductor device applications are fabricated by initially forming a Cu-rich, phase-separated compound mixture comprising Cu(In,Ga):Cu[sub x]Se on a substrate to form a large-grain precursor and then converting the excess ...

Enhanced quality thin films of Cu.sub.w (In,Ga.sub.y)Se.sub.z for semiconductor device applications are fabricated by initially forming a Cu-rich, phase-separated compound mixture comprising Cu(In,Ga):Cu.sub.x Se on a substrate to form a large-grain precursor and then converting the excess ...

This research investigated a new spray pyrolysis technique for depositing cost effective, thin films of CuInSe/sub 2/ for terrestrial solar cell applications. This process is attractive because of its inherent simplicity which has permitted large scale production of high quality, thin films at low cost of a variety ...

This research is investigating a promising new spray pyrolysis technique for depositing cost effective thin films of CuInSe/sub 2/ for terrestrial solar cell applications. This process is attractive because of its inherent simplicity which should permit large scale production of high quality thin films at low cost. ...

A technology for the production of large-area integrated Cu/sub x/S-CdS thin-film solar cell generators with enhanced output voltages has been developed. The CdS-layers are produced by evaporating CdS-powder and are comparable in quality with vacuum-deposited CdS-layers. For the production of the Cu/sub x/S-layers ...

The normal spectral emissivity of liquid Cu is reported with precautions taken to minimize errors. These precautions include a high quality blackbody, elimination of the effect of reflected light on the pyrometer, film free surface of liquid Cu, accurate calibration for light absorbed through the optical path, and ...

Non toxic chemical routes that enable formation of high quality CuInSe2 thin films with high materials utilization are desired for low production cost of solar cells. Sonochemistry provides a well known route to form reactive surfaces in metallic particles and , in the literature, CuSe has been reactively formed by ...

P-type transparent conductive oxides would have potential applications in photovoltaics, transparent electronics and organic opto-electronics. In this paper we present results on the synthesis of Cu2SrO2, a p-type transparent conducting oxide, by a chemical solution route as well as the conventional pulse laser deposition (PLD) method. For Cu2SrO2 by the ...

This conference paper describes the in-depth understanding of the defect formation and resulting changes in material quality occurring during the Cu(In,Ga)Se2 growth process is vital to the successful and widespread use of this photovoltaic material. In an attempt to develop such an understanding, we investigated the growth of ...

A single resistivity heated source was used to deposit a mixture of BaF{sub 2}, Cu, and Y to form precursor films onto MgO substrates held at room temperature. Different heat treatment conditions were applied to study the stability diagram of YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}. It was found that the stability line is shifted toward ...

YBa2Cu3Ox (YBCO) thin films grown on different substrates with and/or without Eu2CuO4 (ECO) buffer layer were investigated by X-ray wide angle diffraction, reflection, diffuse scattering and topography. The results show that for the yttria stabilized ZrO2 (YSZ) substrate, the presence of an ECO buffer layer improves the crystalline ...

Structural, morphological, electrical and photoconductive properties of Cu doped CdS thin film are reported here. All the films are formed in hexagonal structure with polycrystalline nature. Cu alters the rods of pure CdS into small grains. Activation energy rises with Cu incorporation in CdS ...

Magneto-optic study of spatial magnetic-field distribution relaxation in an HTSC film strip after-field relaxation in an YBa2Cu3O7 film strip after the transport current is switched on. It is shown in high-quality HTSC films jc(T Tc) 107 �108 A/cm2 , one has to use nar- row strips with a ...

The fabrication of homogeneous high quality YBa2Cu3O7 films on large area substrates is the first essential step on the way to commercial high temperature superconductor devices. We have succeeded in growing YBa2Cu3O7 films with excellent electronic properties and outstanding homogeneity in ...

A combination of Cu speciation analysis and toxicity testwork was conducted to assess the behavior, speciation, and bioavailability of Cu in a stream system rich in dissolved organic carbon (DOC) downstream of a mine-impacted lake (East Lake, ON, Canada). Elevated levels (approximately 50 microg/L) of Cu exist in the lake due to the ...

A study was made on factors of the formation of high-quality thin films in the pulse laser deposition (PLD) method, a synthesis method of high-grade functional material thin films. In the experiment, plume current measurements using Cu target were conduct...

Low surface resistance is achieved by introducing BaZrO3 nano-particles in high crystalline quality ErBa2Cu3O7-? films. The surface resistance of a ErBa2Cu3O7-? film with BaZrO3 nano-particles grown by pulsed laser deposition is 55% of that without BaZrO3 nano-particles near 65 K. This result ...

This work studies the feasibility of fabricating CuInSe/sub 2/ (CIS) solar cells by laser annealing sandwiched layers of elemental Cu, In, and Se. The chalcopyrite phase of CIS now is obtained by thermal annealing elemental Cu and In layers in H/sub 2/Se. This process is hazardous because the H/sub 2/Se gas is highly toxic. The ability ...

We demonstrate the first one-stage growth of CuInS2 films by radio frequency (RF) reactive sputtering with a Cu-In alloy target and H2S gas. High quality films of good adhesion can be sputtered either on bare float glass at a minimum substrate temperature of 400�C or on Mo- or ZnO-coated ...

The CuInSe2 absorber was synthesized by non-vacuum process with a simple and low-cost method, which fabricated absorber layer of thin-film solar cell. The extra amount of Se was added into the ink to help reduction of the oxide and solid Se fountain was used to provide Se atmosphere during the selenization progress. The influence of same factors was ...

High quality CdTe thin films grown by laser deposition technique and heavily doped with Cu have recently been reported to have resistivity and hole mobility comparable to those of bulk single crystals. To explain the experimental results we have calculated the effect of Cu on the band structure and phonon spectrum ...

Recent developments in the colloidal synthesis of high quality nanocrystals have opened up new routes for the fabrication of low-cost efficient photovoltaic devices. Previously, we demonstrated the utility of CuInSe(2) nanocrystals in the fabrication of CuInSe(2) thin film solar cells. In those devices, sintering ...

YBCO directly deposited on Si gives poor film quality and buffer layers have proved to be necessary. Yttrium stabilized zirconia (YSZ) has been deposited on Si and then yttria on YSZ by electron beam evaporation. YBCO deposited on the top have been found ...

High quality YBa2Cu3O7-x films were grown in-situ on LaAlO3 (100) by a novel single liquid source plasma-enhanced metalorganic chemical vapor deposition process. The metalorganic complexes M(thd)n, (thd = 2,2,6,6-tetramethyl-3,5-heptanedionate; M = Y, Ba,...

Using facing targets and off-axis direct-current magnetron sputtering, we have prepared high quality YBa2Cu3O7-x (YBCO) superconducting thin films on ZrO2 (100) with Tc less than 90 K (R=0) and Jc as high as 1.6 X ten to the 6th power A/sq, cm. (78 K, zer...

In this study, the formation of Cu oxide on Cu film is studied during Cu electropolishing in a phosphoric acid-based electrolyte with various Cu ion concentrations, from 2.28% to 10.08%. In cyclic voltammetry measurement, the maximum current density of the anodic peak (Imax) decreases from ...

High quality La/sub 1.8/Sr/sub 0.2/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub 7/ superconducting thin films, with zero resistance at 88 K, have been made by dual-ion-beam sputtering of metal and oxide targets at elevated temperatures. The films are about 1.0 ..mu..m thick and are single phase ...

The thermal decomposition of metal carboxylates is used to prepare superconducting YBa2Cu3O(7-x) films with a thickness of 2-6 microns on SrTiO3, ZrO2, and MgO single crystal substrates by means of a dip-coating and spin-coating process. The quality of the films is characterized by X-ray diffraction analysis, ...

The YBa2Cu3O7-x (YBCO) superconducting thin films with Tc(R equals 0) of 84 K and Jc of 2 X 103 A/cm2 at 77 K, on polycrystalline Ni-based alloys with buffer layers of Yttria-Stabilized-Zirconia (YSZ), have been prepared in situ by excimer laser. The orientation of laser-deposited YSZ buffer layers on NiCr alloys can be improved by choosing the suitable ...

The magnetoresistance of [Co/M/Fe3O4](M=Pt, Cu, TiN) trilayer films has been investigated. The high-quality Fe3O4 film prepared by the magnetron spattering method using Ar-H2 gas has been used. The GMR effect has been observed only for [Co/Cu/Fe3O4]. The GMR values are 0.1% and 0.7% at RT and ...

The quality of superconducting thin films evaporated from YBa{sub 2}Cu{sub 3}O{sub 7} targets has been improved using a long-pulse (ms) Nd-glass laser with 50 J pulse energy. The film produced on SrTiO{sub 3}, held at 690 C, and post-annealed at 880 C for about three hours began the transition to superconductivity ...

We report two ion beam analysis techniques, elastic recoil detection analysis (ERDA) and Rutherford backscattering (RBS), to characterize YBa2Cu3O7?x (YBCO) films, obtained in situ by pulsed laser deposition (PLD). Initially, ERDA measurements were performed on a thin film to evaluate the PLD rate. RBS measurements correlated with ...

The growth quality of thin, superconducting YBaCuO films has been compared on random and (100) oriented yttrium-stabilized zirconia substrates using x-ray diffraction and ion channeling experiments. Superior growth is observed on (100) substrates with narrow mosaic distributions (0.4{degree}) and a minimum yield value of 10% in the ...

Superconducting YBa{sub 2}Cu{sub 3}O{sub 7} films with {Tc}=84 K were deposited on polished polycrystalline BeO substrate by reactive evaporation and {ital in} {ital situ} annealing in a low-pressure oxygen atmosphere. By this process the surface quality of the films is the very same as the substrate. At low ...

A new technique developed for growing high-quality oxide thin films by molecular beam epitaxy (MBE) is described. The technique uses low-energy and high density O[sup +] ion beams mass-separated from an oxygen plasma, as an oxidation source. Since O[sup +] ion beams have great oxidation ability and kinetic energy, the technique enables one to grow oxide ...

Superconducting thin films have been deposited in-situ on several substrate materials using pulsed excimer laser deposition. The major accomplishments were in four separate areas: (1) We were the first to grow excellent quality YBa2Cu3O7 on Si and on sili...

Excimer laser ablation with an in situ heat treatment was used to prepare high quality superconducting YBa(sub 2)Cu(sub 3)O(sub 7(minus)x) thin films on (100)-SrTiO(sub 3) and (100)-LaAlO(sub 3) substrates. A pulsed excimer laser (XeCl; 308 nm) was used t...

Thin films of Y--Ba--Cu--O were produced by rf sputtering of YBa{sub 2}Cu{sub 3}O{sub 7-x} ceramic targets, using a variety of plasma compositions, rf power levels, and substrate temperatures. Post annealing of these films in oxygen produced superconducting films with T{sub c} values between ...

Since the first reports on superconducting thin films obtained by evaporating BaF2, Cu and Y(sup 1),

Using first-principles calculations, we studied the thermodynamic stability and intrinsic defects of the quaternary Cu2ZnSnS4 (CZTS) semiconductor, which are crucial for further improvement of its solar cell efficiency. We find that (i) The chemical potential region that CZTS can form stoichiometrically is very small. Therefore, it will be very difficult to obtain high ...

A coating system for the deposition of in-plane oriented yttria-stabilized zirconia (YSZ) template films on 1 cm wide flexible metal substrates is presented. In static mode, the system is capable of producing high quality template films on 20 cm substrate lengths. In a continuous coating mode, the system is capable of producing good ...

Laser Assisted Molecular Beam Deposition (LAMBD) is a pulsed laser ablation technique which utilizes a train of gas pulses to precisely control the chemistry and transport of species to be deposited on a substrate. The LAMBD technique has been used to grow films on a variety of substrates and to ablate a variety of target materials including: metals, metal oxides, metal ...

We have grown NdBa{sub 2}Cu{sub 3}O{sub 7-{delta}} films under silver atomic flux by molecular-beam epitaxy, which show a drastic improvement in microstructure and also crystallinity leading to a 30% enhancement in critical current density. The most remarkable point is that the final film is free from silver. The key to our process in ...

High current YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) thick films on flexible nickel substrates with textured buffer layers were deposited by using ion beam assisted deposition (IBAD). Pulsed laser deposited YBCO films were not only c-axis oriented with respect to the film surface but also strongly in-plane ...

A high quality superconducting film on a substrate with a low dielectric constant is desired for passive microwave circuit applications. In addition, it is essential that the patterning process does not effect the superconducting properties of the thin films to achieve the highest circuit operating temperatures. ...

Superconducting thick films of (Hg, Sb)Ba2Ca2Cu3O8+icons/Journals/Common/delta" ALT="delta" ALIGN="MIDDLE"/> have been fabricated on polycrystalline yttria-stabilized-zirconia substrates utilizing an Hg-free precursor film reacted with Hg vapour, released from a solid Hg source, in a sealed quartz tube. The resulting ...

... selected films showed that all films were well different frequencies for a YBCO film deposited aligned with the single-crystal substrate. ...

Polycrystalline CuGaSe2 thin films grown with various Cu/III(=Cu/Ga) ratios were investigated by positron annihilation spectroscopy (PAS). The line-shape parameter S of the spectra was used to characterize defects in CuGaSe2 films. The S-parameter in positron annihilation spectra increased with ...

A search for reliability improvement of Al film interconnections has led to the introduction of Al-Alloy films such as Al+Cu, Al+Cu+Si and so on. This report describes the results of an in-depth study of Al, Al+Cu (2 wt % Cu) and Al+Cu+Si (2 wt % ...

We have investigated the fabrication of thin-film superconductors by Cu-ion implantation into initially Cu-deficient Y(BaF(sub 2))Cu thin films. The precursor films were co-evaporated on SrTiO(sub 3) substrates, and subsequently implanted to various doses...

Large monolithic solar photovoltaic panels are in initial pilot production. These panels utilize CdS deposited by spray pyrolysis with a Cu(x)S layer formed by dipping in cuprous ion solution. To gain a better understanding of the structure of such films and to assure a basic level of film quality, a field emission ...

High-quality c-axis oriented superconducting YBa2Cu3O(7-delta) thin films have been prepared on Si(100) substrates with CoSi2 buffer layers by in situ pulsed laser ablation processing. The films were characterized by X-ray diffraction, four-point ac electrical resistivity, SEM, and TEM techniques. ...

The objective of the contract is to demonstrate the feasibility of producing device-quality copper indium diselenide films by the close-spacing chemical vapor transport (CSCVT) technique. The technical approaches used in this work consist of (1) the preparation of the CuInSe/sub 2/ source material by direct synthesis and the ...

Quality factor measurements are reported of a coplanar waveguide transmission line resonator patterned from a YBa2Cu3O(7-x) film on a LaAlO3 substrate, resonating at 6.5 GHz. At 77 K the unloaded quality factor is 3850 + or - 180, that is about 43 times higher than that of an identical copper resonator at the same ...

... Accession Number : ADD204977. Title : Interfacial Reactions on Annealing Cu/Al Multilayer Thin Films. Descriptive Note : Journal article,. ...

The current-voltage, I-V, characteristics of polycrystalline Y-Ba-Cu-O films have been measured as a

This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film ...

This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film ...

The effect of secondary phase CuxSe on the absorber quality of epitaxial CuGaSe2 films is studied by spatially resolved photoluminescence combined with scanning electron microscopy. We show that the presence of CuxSe crystals on the absorber during growth under Cu excess results in a locally increased crystal ...

This report presents the results of a one-year research program on polycrystalline thin-film solar cells. The research was conducted to better understand the limitations and potential of solar cells using CuInSe{sub 2} and CdTe by systematically investigating the fundamental relationships linking material processing, material properties, and device ...

This report presents the results of a one-year research program on polycrystalline thin-film solar cells. The research was conducted to better understand the limitations and potential of solar cells using CuInSe2 and CdTe by systematically investigating the fundamental relationships linking material processing, material properties, and device behavior. By ...

Large-area pulsed laser deposition (PLD) has reached a state in terms of film quality and reproducibility which makes possible now real applications of PLD-YBa2Cu3O7-? (YBCO) thin films on both sides of R-plane sapphire substrates as HTSC devices in mobile communication systems. Bandpass filters optimized from ...

A simple and reliable method of producing good quality superconducting thick films of YBa/sub 2/Cu/sub 3/O/sub 7/ with zero resistance above 87 K is presented. The method consists of dipping, spraying or painting a superconducting precursor ink on a substrate (of arbitrary dimensions) with subsequent sintering in flowing oxygen at ...

We report on the fabrication of heterojunction solar cells made by deposition of transparent conducting oxide (TCO) films on Cu{sub 2}O substrates. The TCO films have been grown by ion beam sputtering on good quality Cu{sub 2}O sheets prepared by oxidizing copper at a high temperature. The best ...

We examined the structural and electrical properties of copper sulfide films as a function of the sulfurization time of 70-nm-thick Cu films. Copper sulfide films with various phases such as mixed metallic Cu-chalcocite, chalcocite, roxbyite, and mixed roxbyite-covellite phases were formed with ...

Highly c-axis orientated YBa2Cu3O7�x films were prepared on LaAlO3 single crystal substrates via metal�organic deposition using trifluoroacetates using ethanol as solvent instead of the toxic methanol. The onset transition temperature is 91 K and the critical current density under self field is over 1 MA/cm2 at 77 K, which indicates ethanol can be used ...

We have studied features of the formation of YBa2Cu3O7 ? ? (YBCO) films on both sides of sub-strates by magnetron sputtering in the on-axis geometry. During sputter deposition onto the first (front) side, a thin film is simultaneously formed on the second (rear) side, which can provide a high-quality sublayer for ...

Thin films of YBa2Cu3O7-? have been made by codeposition of Cu, Y and BaF2 in a UHV system. Annealing in humid oxygen at 835 �C produces high quality single phase preferentially c oriented films. In 1000 A? thin films the transport current density is larger than 106 A/cm2 ...

Thin films of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} have been made by codeposition of Cu, Y and BaF{sub 2} in a UHV system. Annealing in humid oxygen at 835 {degree}C produces high quality single phase preferentially {ital c} oriented films. In 1000 A thin films the ...

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 19, NO. 3, JUNE 2009 2855 Intermodulation, Daniel E. Oates, and Chang-Beom Eom Abstract--We report intermodulation distortion (IMD) in high- quality useful method to grow thick YBCO films with high crystalline quality and low IMD. Index Terms--Intermodulation

We report the stability of TlBa{sub 2}CaCu{sub 2}O{sub 7} (Tl-1212) and Tl{sub 2}Ba{sub 2}CaCu{sub 2}O{sub 8} (T1-2212) thin films and by inference, the stability of TlBa{sub 2}Ca{sub 2}Cu{sub 3}O{sub 9} (Tl-1223) and Tl{sub 2}Ba{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} (Tl-2223) thin ...

The electrochemistry of [Cu(hfac)(2)], where hfac is hexafluoroacetylacetonate, and [Cu(MeCN)(4)](+) were investigated in liquid acetonitrile (MeCN), supercritical CO(2)/MeCN and supercritical trifluoromethane (CHF(3)) at 310-311 K and 17-20 MPa using either [NBu(n)(4)][BF(4)] or [NBu(n)(4)][B{3,5-(CF(3))(2)C(6)H(3)}(4)] as the supporting electrolyte. In ...

We studied the proximity effect in order to probe the response of the heavy-fermion metal CeCu6 to induced superconductivity. High-quality CeCu6 films were grown by sputter deposition. Resistivity measurements show that the correlated electron state is formed. Bilayers were prepared of CeCu6(75 ...

Cu thin films underwent thermal cycling to determine their coefficient of thermal expansion (CTE). The thermal stress of the Cu thin films with various microstructures (different grain size and film thickness) was measured using a curvature measurement system. The thermal expansion coefficients ...

... BISMUTH, *CALCIUM, *COPPER, *FILMS, *ORGANOMETALLIC COMPOUNDS, *OXIDES, *STRONTIUM, *PATENTS, *SUPERCONDUCTIVITY ...

Research is being conducted on Cu/Pd and Pd/Cu thin films. Work has been completed on the following: Work Function Studies on Epitaxial Cu/Pd Bilayer Films; Kinetics of CO and Oxygen Adsorption on Smooth and Sputtered Epitaxial Pd(lll) Films on Mica; A Simple Model for the ...

Thin films were deposited by pulsed uv-laser (ablation) deposition of Y{sub 1}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} (YBCO), and composite zirconia and yttria targets onto silicon wafers. These films were analyzed to ascertain the chemical and physical structure of the film interfaces and further the development ...

High-quality YBaCuO films are used to sequentially prepare a 10-GHz disk resonator and a planar inductance coil. The Q factor of the planar inductance coil at its resonance frequency (64 MHz) is much higher than the values reported for analogous structures. The measurement results are used to estimate the surface resistance of the ...

Epitaxial MgO thin films were grown on Si(001) by pulsed laser deposition. In spite of a large ({minus}22.5%) lattice mismatch, epitaxy occurs with alignment of all crystallographic axes. Epitaxial quality and deposition rate are both sensitive to temperature and oxygen pressure. We believe this is the first demonstration of epitaxial MgO on Si. We employ ...

The processes involved in plasma and ion beam sputter-deposition of high temperature superconducting thin films are critically reviewed. Recent advances in the development of these techniques are discussed in relation to basic physical phenomena, specific to each technique, which must be understood before high quality films can be ...

The processes involved in plasma and ion beam sputter-deposition of high temperature superconducting thin films are critically reviewed. Recent advances in the development of these techniques are discussed in relation to basic physical phenomena, specific to each technique, which must be understood before high quality films can be ...

A chemical method for preparing CuI thin films by iodination of solution grown Cu2S films is described. X-ray characterization identifies ?-CuI and suggest that the films are polycrystalline in nature. SEM reveals a granular film morphology. Optical ...

Giant magnetoresistance (GMR) films produced by ion-beam deposition (IBD) have been studied much less than material produced by other techniques such as magnetron or diode sputtering. Although the process control aspects that are unique to IBD seem ideal for such work, the reported MR values for IBD material are often lower and the material resistivities higher than for ...

A three-step MOCVD/annealing process has been refined to reproducibly grow high quality Tl2Ba2CaCu2Ox thin films on 25 mm x 25 mm LaAlO3 single crystals and 25 mm diameter silver alloy discs (Consil-995). Films on LaAlO3 were highly c-axis oriented and showed sharp resistive and inductive transitions above 100 K. ...

Electron transport (ET) properties of a series of fluorinated copper-phthalocyanine (F(16)CuPc) thin films, which were deposited at different substrate temperatures (T(sub)) ranging from 30 to 150 degrees C, have been investigated by quantum mechanical calculations of the reorganization energy (lambda(reorg)), X-ray diffraction (XRD), atomic force ...

This paper reports a study on mixed rare-earth barium-copper oxide superconducting films (Y0.67Eu0.33)Ba2Cu3O7-? of different thicknesses grown on single-crystal SrTiO3 substrates by pulsed laser deposition (PLD). X-ray diffraction (XRD), scanning electron microscopy (SEM) and cross-sectional transmission electron microscopy (TEM) were employed to ...

By using a modified bias sputtering technique, biaxially-textured YSZ thin films were fabricated on polycrystalline metal substrate as a buffer layer for deposition of YBCO films. The growth quality of YSZ buffer layers thus obtained was found to determine the texture of subsequently grown YBCO films, which in turn ...

Reactive coevaporation was investigated as a method for producing YBa_2Cu_3 O_{7-delta} (YBCO) thin films. Correlations between the structural and electrical properties of high quality films grown by this and other methods were discovered. Microelectronic applications of the high temperature cuprate superconductors ...

High quality thin films of copper-indium-gallium-diselenide useful in the production of solar cells are prepared by electrodepositing at least one of the constituent metals onto a glass/Mo substrate, followed by physical vapor deposition of copper and selenium or indium and selenium to adjust the final stoichiometry of the thin film to ...

High quality thin films of copper-indium-gallium-diselenide useful in the production of solar cells are prepared by electrodepositing at least one of the constituent metals onto a glass/Mo substrate, followed by physical vapor deposition of copper and selenium or indium and selenium to adjust the final stoichiometry of the thin film to ...

We report on the microwave properties of Nd0.67Sr0.33MnO3-x (NSMO) and NSMO/YBa2Cu3O7-x thin film heterostructures. The quality factor (Q) and center frequency of a 13 GHz shielded dielectric cavity resonator, with the film comprising one surface, were measured as functions of temperature and direct current ...

YBCO on MgF2 withstood post annealing to 750 deg C without deterioration. This allows the deposition of high quality multiple layer YBCO films onto both sides of a MgF2 substrate. GdBaCuO films were deposited onto LaAlO3 and appear to be superior to YBCO in terms of lower particulate density, slightly higher T[sub ...

High-Tc YBaCuO superconducting films have been prepared in-situ on Si substrates with buffer layers using off-axis single-target RF magnetron sputtering. A special cylinder heater with a reflecting cone was used to grow in-situ YBaCuO films on different buffer layers, such as Y-stabilized ZrO2 (YSZ), LaAlO3, ...

High quality organic-inorganic heterojunction photodiodes based on nanostructured copper (II) phthalocyanine (CuPc) and intrinsic zinc oxide (i-ZnO) have been fabricated. The i-ZnO thin films/layers were grown by RF magnetron sputtering on clean indium tin oxide (ITO) coated glass substrates. These films have been ...

High quality organic-inorganic heterojunction photodiodes based on nanostructured copper (II) phthalocyanine (CuPc) and intrinsic zinc oxide (i-ZnO) have been fabricated. The i-ZnO thin films/layers were grown by RF magnetron sputtering on clean indium tin oxide (ITO) coated glass substrates. These films have been ...

The ternary chalcopyrite semiconductor Cu(In/Ga)(Se/S)2 is currently used as an absorber layer in high efficiency thin film solar cells. In this study, various types of I-III-VI (I = Cu, III = Ga or In, VI = S or Se) thin films (CuGaS2, CuInS2 and ...

The program objective is to investigate and evaluate the application of cylindrical-post magnetron reactive sputtering to the production of solar cell quality thin films of CdS/Cu/sub 2/S for large scale terrestrial photovoltaic energy conversion. Cominco American has encountered difficulties in maintaining the desired 6-9's ...

Efforts this quarter concentrated on completion and check-out of the MBE system, deposition of ZnS films, analysis of the internal photoresponse for Cu-Cu/sub 2/O cells, and fabrication and characterization of Cu-Cu/sub 2/O solar cells. In-doped ZnS films with very good optical quality and ...

Nanometer period metallic multilayers are ideal structures to investigate electronic phenomena at interfaces between metal films since interfacial atoms comprise a large atomic fraction of the samples. The Cu/Cr binary pair is especially suited to study the interfaces in metals since these elements are mutually insoluble, thus eliminating mixing effects ...

Sputtered thin film and multilayer x-ray mirrors are made routinely at the Advanced Photon Source (APS) for the APS users. Precise film growth control and characterization are very critical in fabricating high-quality x-ray mirrors. Film thickness calibrations are carried out using in situ and ex situ spectroscopic ...

Electroplated Cu films exhibit a microstructure evolution at room temperature, called self-annealing. The kinetics of this recrystallization process is strongly influenced by plating conditions in the form of Cu film thickness, current density, and additive content in the electrolyte. Existing models have been used ...

We report on the synthesis of epitaxial (single-crystal-like), nanotwinned Cu films via magnetron sputtering. Increasing the deposition rate from 1 to 4 nm/s decreased the average twin lamellae spacing from 16 to 7 nm. These epitaxial nanotwinned Cu films exhibit significantly higher ratio of hardness to room ...

Titanium nitride (TiN) and superconducting YBa2Cu3O7 (YBCO) thin films have been deposited sequentially on SrTiO3(STO)(100) substrates by in situ pulsed laser ablation. The TiN films were originally intended to serve as the lower contact electrode of the c-axis YBCO thin films. It was found that, although ...

In this study, ceramic oxides are evaluated as substrates for Bi-2212 superconducting thick films. During the partial melt-processing of Bi2Sr2CaCu2Ox (Bi-2212) thick films, a liquid phase is formed which might react with the substrate. Generally, reactions between melt and substrate cause degradation of the superconducting properties, ...

The advance in silicon semiconductor processing has driven the minimum feature size towards 32 nm node. Copper has replaced Al as the dominant interconnect metal owing to its lower resistivity and better electromigration resistance. The diffusion of Cu into dielectrics or Si results in deteriorating device performance. To avoid copper diffusion, an effective barrier layer ...

The properties of abrasive particles play a significant role in chemical mechanical polishing (CMP) of metal and dielectric films in semiconductor device manufacturing. This study investigates the effects of the particle size, shape, and hardness of abrasives on the polishing of copper and tantalum films in the presence of different slurry chemistries. ...

Good quality superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} thin films have been grown on nickel-based superalloy, viz., Hastelloy with yttria-stabilized zirconia buffer layers employing a single chamber {ital in} {ital situ} pulsed laser deposition process. YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} ...

This report describes research in Rapid Thermal Processing (RTP), a process that allows the formation of CuInSe{sub 2} without the use of H{sub 2}Se. RTP is a well-established method of rapidly achieving temperatures necessary to melt and recrystallize materials such as Si and and silicides. RTP processes can rapidly and uniformly heat large surface areas to hundreds of ...

This report describes research in Rapid Thermal Processing (RTP), a process that allows the formation of CuInSe{sub 2} without the use of H{sub 2}Se. RTP is a well-established method of rapidly achieving temperatures necessary to melt and recrystallize materials such as Si and and silicides. RTP processes can rapidly and uniformly heat large surface areas to hundreds of ...

Self-assembly monolayers (SAMs) of octadecyltrichlorosilane (OTS) on a silicon dioxide substrate were formed in solution, or by vacuum vapor methods, and characterized by Fourier transform infrared (FTIR) spectroscopy. We found that the OTS SAMs on SiO2 substrates greatly affect the order and connectivity of evaporated copper phthalocyanine (CuPc) thin ...

Nanostructured Cu doped CdO films were fabricated using the sol�gel spin coating technique. Surface morphology and particle size of the films were studied by atomic force microscopy. Atomic force microscopy study revealed that the particle size of the films is a nanometers and particle size is decreased with ...

Polycrystalline CuInS(2) films were fabricated by sulfurization of electrodeposited Cu and In metallic precursor films in a Cu-rich composition at 520 �C in H(2)S (5% in Ar). Structural analyses revealed that the adherence of the thus-formed CuInS(2) ...

We present the first coplanar waveguide transmission line resonator patterned from a perovskite high {ital T}{sub {ital c}} superconducting film at 9 GHz. At 77 K the unloaded quality factor {ital Q}{sub 0} of the resonator patterned from a YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} film on a MgO substrate is 1300, ...

Thin films of n-type cuprous oxide (Cu2O) were potentiostatically electrodeposited on a Ti substrate in an acetate bath. Cu2O thin films were annealed at 500 �C for 30 min in air for growing p-type cupric oxide (CuO) thin films. n-Cu2O thin ...

We have grown high quality epitaxial TiN/Si(100) and Cu/TiN/Si(100) heterostructures by pulsed laser deposition. The epitaxial TiN films have the same low (15{mu}{Omega}-cm) resistivity as TiSi{sub 2} (C-54) phase with excellent diffusion barrier properties. Auger and Raman spectroscopy revealed that the films were ...

Further improvements have been made in the efficiency of the CuInSe sub 2 /CdS cell with values exceeding 9.5%. Some progress has been made in improving the efficiency of the CdTe/CdS cell but until the quality of the back ohmic contact is improved, subst...

... Thin ( < 500A) YBCO films are unrelaxed and ... there are no true single crystal films, we ... a scheme to cleave BiSrCaCuO single crystals and make ...

... of cu-30 wt% geo2-70 wt% thin cermet films prepared by ... edge remains similar for both unannealed and annealed films, but annealing has ...

Single-phase CuInSe2 films were grown by high vapor selenization of CuIn alloy precursors within a partially closed graphite box. The CuIn precursors were prepared using CuxIny alloy targets with different composition rates under low vacuum level by a homemade sputtering system. The Cu and In ...

It has emerged after many years of research that to obtain good-quality high-Tc superconducting Y1Ba2Cu3O7-? (referred to as Y123 here) films on metallic (Hastelloy C-276) substrates, cubic yttria stabilized zirconia (frequently referred to as YSZ) is an excellent buffer layer. It was found that the use of a Pt underlayer, under this ...

The mixing situation of Fe or Co atoms implanting onto Cu(001) substrate is investigated with regard to substrate temperature and deposition rate by molecular dynamics. The tight-binding-second-momentum-approach many-body potential is used to model the atomic interaction. The results indicate that the morphology of the layer is under epitaxial growth as the substrate ...

This paper reports the microstructural analysis of S-rich CuIn(S,Se)2 layers produced by electrodeposition of CuInSe2 precursors and annealing under sulfurizing conditions as a function of the temperature of sulfurization. The characterization of the layers by Raman scattering, scanning electron microscopy, Auger electron spectroscopy, and XRD techniques ...

We present the surface morphology of YBCO films deposited by laser ablation and optimization procedure of laser ablation to obtain epitaxial films with good surface quality. The optimization of the surface morphology of the films can be performed by carefully controlling the laser power to determine the growth rate ...

Nanoparticles of Cu or Cu oxide dispersed in a polyimide (PI) film were fabricated by reaction of polyamic acid with a thin Cu film during imidization. In this paper, the thermal stability of the Cu or Cu oxide nanoparticles was investigated under ...