Presented at the 2001 NCPV Program Review Meeting: Potential of quantum dot solar cells to increase the maximum attainable thermodynamic conversion efficiency of solar photoconversion to about 66%.
Energy Citations Database
... Achieve QDMs with high dot density (~1012 cm-2), good dot uniformity and dot ordering are needed in this solar cell structure. ...
DTIC Science & Technology
... During solar cell growth, this strain is ... Descriptors : *SOLAR CELLS, *QUANTUM DOTS, QUANTUM THEORY, GALLIUM ARSENIDES ...
Intermediate-bandgap solar cell. Experimental setup for chemical bath production of quantum dots. The NASA Glenn Research Center has been investigating the ...
NASA Website
... ELECTRICAL PROPERTIES, *SOLAR CELLS, *ELECTRIC CHARGE ... LOW ENERGY, QUANTUM THEORY, ELECTRONIC EQUIPMENT, LASERS. ...
quantum dots and carbon nanotubes to enhance inorganic and organic cell efficiencies. ... of states resulting from the introduction of quantum dots offers a ...
quantum dots. The NASA Glenn Research Center has been investigating the synthesis of quantum dots of. CdSe and CuInS2 for use in intermediate-bandgap ...
We demonstrate a novel architecture of solar cell by incorporating graphene thin film in a quantum dot sensitized solar cell. Quantum dot sensitized nanorods with a graphene layer exhibited a 54.7% improvement comparing a quantum ...
PubMed
Researchers at the National Renewable Energy Laboratory (NREL) have certified the first all-quantum-dot photovoltaic cell, which was based on lead sulfide and demonstrated reasonable quantum dot solar cell performance for an initial efficiency measurement along with good stability. The certified open-circuit ...
DOE Information Bridge
The principal Phase II objective is to develop an InN-based quantum dot solar cell capable of high performance in near-sun and extreme radiation environments. ...
SUBTOPIC TITLE: Energy Conversion for Space Applications. PROPOSAL TITLE : High Efficiency Quantum Dot III-V Multijunction Solar Cell for Space Power ...
Jul 28, 2004 ... We are proposing to utilize quantum dots to develop a super high-efficiency multijunction III-V solar cell for space. ...
... The constant AM1 light was calibrated from a standard reference Si solar cell. ... [10] V. Aroutiounian, et al., �Quantum Dot Solar Cells�, J. Appl. ...
ABSORPTION CHARACTERISTICS OF QUANTUM DOT ARRAY BASED INTERMEDIATE BAND SOLAR CELL S. Tomi,1) N of light in vacuum, m0 is the rest electron mass, n is the refractive index of the GaAs, 0 is the vacuum
E-print Network
... CELLS(SEMICONDUCTOR), SUBSTRATES, TOPOGRAPHY, QUANTUM DOTS, ORGANIC MATERIALS, THIN FILMS, SOLAR CELLS. ...
The radiation and thermal dependence of strain compensated InAs QD/ GaAs solar cells have been investigated. Strain compensation is a key step in realizing high efficiency quantum dots solar cells (QDSC). InAs quantum dots (QDs) are grown using the Strans...
National Technical Information Service (NTIS)
The NASA Glenn Research Center has been investigating the synthesis of quantum dots of CdSe and CuInS2 for use in intermediate-bandgap solar cells. Using quantum dots in a solar cell to create an intermediate band will allow the harvesting of a much large...
In this work, the structure of InxGa1?xN/GaN quantum dots solar cell is investigated by solving the Schr�dinger equation in light of the Kronig-Penney model. Compared to p-n homojunction and heterojunction solar cells, the InxGa1?xN/GaN quantum dots intermediate band ...
NASA Astrophysics Data System (ADS)
We have been investigating the synthesis of quantum dots of CdSe, CuInS2, and CuInSe2 for use in an intermediate bandgap solar cell. We have prepared a variety of quantum dots using the typical organometallic synthesis routes pioneered by Bawendi, et. al., in the early 1990's. However, unlike ...
We report on a flexible quantum dot-sensitized solar cell (QDSSC) based on ZnO nanorods with a length of 2 ?m. Due to the good coverage of CdSe QDs on ZnO by the electrophoretic deposition method, a maximum power conversion efficiency of ?1% is achieved for the flexible QDSSC. PMID:21701706
Self-assembled quantum dots by MBE (Molecular Beam Epitaxy) are examined as a structure of solar cells and other novel nanoelectronic devices. Zero-dimensionality of quantum dot gives rise to certain unique properties: charge storage and single-electron t...
Sep 9, 2006 ... The goal of this STTR program is to employ nanostructured materials in advanced device designs to enhance the tolerance of solar cells to ...
... solar cells and their potential applications at high concentrated sunlight were also presented at major international solar cell conferences, ie 4th ...
In this work the statistical theory of multiple exciton generation in quantum dots is presented based on the Fermi approach to the problem of multiple generation of elementary particles at nucleon�nucleon collisions. Our calculations show that the quantum efficiencies of multiple exciton generation in various ...
innovati n Semiconductor quantum dots used in so-called "third-generation" solar cells have the potential to dramatically increase-in some cases even double-the efficiency of...
National Renewable Energy Laboratory (NREL)
Comparing Multiple Exciton Generation in Quantum Dots to Impact Ionization in Bulk Semiconductors: Implications for Enhancement of Solar Energy Conversion, Nano Letters, v10, pp....
Thus, exciton dissociation in these ZnO nanowire solar cells occurs preferentially on the (101j0 of ZnO. In a solar cell based on CdSe quantum dots and ZnO nanowires, the excess energy upon electron-dot-sensitized solar cell (QDSSC) architecture where nanoparticles or ...
... Descriptors : *COMPUTERS, *QUANTUM DOTS, *QUANTUM OPTICS, DEMONSTRATIONS, EXCITATION, COHERENCE, SEMICONDUCTORS ...
) � GaAs (~ 27%, 255 sun) � Organic (~8%) Multi-junction (40%, 240 suns) Quantum dot solar cells � SelfQuantum Dot Solar Cells: A Novel Approach to Ultra High Efficiency Giacomo Mariani April 24, 2009 Department #12;Outline State-of-the-art Intermediate Band and QD ...
We report a solar cell nanostructure that incorporates CdSe quantum dots embedded in a ZnO nanowire film and a hole-conducting polymer layer. This arrangement allows for enhanced light absorption and efficient collection of the carriers. Microscopic studies show the conversion of CdSe quantum ...
... Compilation Part Notice ADP013253 TITLE: Spin Quantum Beats of Hot Trion in Quantum Dots ... Spin quantum beats of hot trion in quantum dots ...
ELECTRICAL AND OPTICAL PROPERTIES OF COLLOIDAL QUANTUM DOTS AND QUANTUM DOT NETWORKS: ROLE OF SURFACE STATES ...
Quantum structured solar cells seek to harness a wide spectrum of photons at high voltages by embedding low energy-gap wells or dots within a high energy-gap matrix. Quantum well and quantum dot solar cells have the potential to deliver ultra-high power ...
Injection of photoexcited electrons from colloidal PbS quantum dots into TiO(2) nanoparticles is investigated. The electron affinity and ionization potential of PbS quantum dots, inferred from cyclic voltammetry measurements, show strong size dependence due to quantum confinement. On the basis ...
Colloidal quantum dots offer broad tuning of semiconductor bandstructure via the quantum size effect. Devices involving a sequence of layers comprised of quantum dots selected to have different diameters, and therefore bandgaps, offer the possibility of funneling energy toward an acceptor. Here ...
