EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book Development of High efficiency CdTe Solar Cells

Download or read book Development of High efficiency CdTe Solar Cells written by and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Energy Research Abstracts

Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development of High efficiency Thin film CdTe Solar Cells

Download or read book Development of High efficiency Thin film CdTe Solar Cells written by A. Rohatgi and published by . This book was released on 1994 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Synerjy

Download or read book Synerjy written by and published by . This book was released on 1996 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development of High efficiency Thin film CdTe Solar Cells Annual Subcontract Report January 1 1993 December 31 1993

Download or read book Development of High efficiency Thin film CdTe Solar Cells Annual Subcontract Report January 1 1993 December 31 1993 written by and published by . This book was released on 1994 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycrystalline thin film CdTe solar cells are one of the leading candidates for terrestrial photovoltaic applications. Theoretical calculations project an efficiency of 27% for single crystal, single junction CdTe cells, and the practically achievable efficiency for polycrystalline CdTe cells is 18-20%. Polycrystalline CdTe cells made by different groups show a significant variation in short circuit currents, open circuit voltages, and cell efficiencies. A better understanding of carrier loss and transport mechanism is crucial for explaining these differences, improving the yield, and bridging the gap between current and practically achievable limits in CdTe cell efficiencies. The goal of this program is to improve the understanding of the loss mechanisms in thin film CdS/CdTe solar cells and to improve their efficiency by characterizing the properties of the films as well as the finished devices.

Book Government Reports Announcements Index

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Polycrystalline CuInSe2 and CdTe Solar Cells Annual Subcontract Report April 15 1992 April 14 1993

Download or read book Polycrystalline CuInSe2 and CdTe Solar Cells Annual Subcontract Report April 15 1992 April 14 1993 written by and published by . This book was released on 1994 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal objective of the research project is to develop processes for the fabrication of cadmium-telluride, CdTe, and copper-indium-gallium-diselenide, Cu(In{sub 1-x}Ga(subscript x))Se2, polycrystalline-thin-film solar cells using techniques that can be scaled-up for economic manufacture on a large scale. The aims are to fabricate CdTe solar cells using Cd and Te layers sputtered from elemental targets; to promote the interdiffusion between Cd/Te layers, CdTe phase formation, and grain growth; to utilize non-toxic selenization so as to avoid the use of extremely toxic H2Se in the fabrication of Cu(In{sub l-x}Ga(subscript x))Se2 thin-film solar cells; to optimize selenization parameters; to improve adhesion; to minimize residual stresses; to improve the uniformity, stoichiometry, and morphology of CdTe and Cu(In{sub 1-x}Ga(subscript x))Se2 thin films, and the efficiency of CdTe and Cu(In{sub 1-x}Ga(subscript x))Se2 solar cells.

Book High Efficiency Cadmium Telluride and Zinc Telluride Based Thin Film Solar Cells Annual Subcontract Report 1 March 1990 28 Februawry 1992

Download or read book High Efficiency Cadmium Telluride and Zinc Telluride Based Thin Film Solar Cells Annual Subcontract Report 1 March 1990 28 Februawry 1992 written by and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development of a Computer Model for Polycrystalline Thin film CuInSe sub 2 and CdTe Solar Cells Annual Subcontract Report 1 March 1992 28 February 1993

Download or read book Development of a Computer Model for Polycrystalline Thin film CuInSe sub 2 and CdTe Solar Cells Annual Subcontract Report 1 March 1992 28 February 1993 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cells operate by converting the radiation power from sun light into electrical power through photon absorption by semiconductor materials. The elemental and compound material systems widely used in photovoltaic applications can be produced in a variety of crystalline and non-crystalline forms. Although the crystalline group of materials have exhibited high conversion efficiencies, their production cost are substantially high. Several candidates in the poly- and micro-crystalline family of materials have recently gained much attention due to their potential for low cost manufacturability, stability, reliability and good performance. Among those materials, CuInSe[sub 2] and CdTe are considered to be the best choices for production of thin film solar cells because of the good optical properties and almost ideal band gap energies. Considerable progress was made with respect to cell performance and low cost manufacturing processes. Recently conversion efficiencies of 14.1 and 14.6% have been reported for CuInSe[sub 2] and CdTe based solar cells respectively. Even though the efficiencies of these cells continue to improve, they are not fully understood materials and there lies an uncertainty in their electrical properties and possible attainable performances. The best way to understand the details of current transport mechanisms and recombinations is to model the solar cells numerically. By numerical modeling, the processes which limit the cell performance can be sought and therefore, the most desirable designs for solar cells utilizing these materials as absorbers can be predicted. The problems with numerically modeling CuInSe[sub 2] and CdTe solar cells are that reported values of the pertinent material parameters vary over a wide range, and some quantities such as carrier concentration are not explicitly controlled.

Book Development of a Computer Model for Polycrystalline Thin film CuInSe2 and CdTe Solar Cells Annual Subcontract Report 1 March 1992 28 February 1993

Download or read book Development of a Computer Model for Polycrystalline Thin film CuInSe2 and CdTe Solar Cells Annual Subcontract Report 1 March 1992 28 February 1993 written by and published by . This book was released on 1994 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar cells operate by converting the radiation power from sun light into electrical power through photon absorption by semiconductor materials. The elemental and compound material systems widely used in photovoltaic applications can be produced in a variety of crystalline and non-crystalline forms. Although the crystalline group of materials have exhibited high conversion efficiencies, their production cost are substantially high. Several candidates in the poly- and micro-crystalline family of materials have recently gained much attention due to their potential for low cost manufacturability, stability, reliability and good performance. Among those materials, CuInSe2 and CdTe are considered to be the best choices for production of thin film solar cells because of the good optical properties and almost ideal band gap energies. Considerable progress was made with respect to cell performance and low cost manufacturing processes. Recently conversion efficiencies of 14.1 and 14.6% have been reported for CuInSe2 and CdTe based solar cells respectively. Even though the efficiencies of these cells continue to improve, they are not fully understood materials and there lies an uncertainty in their electrical properties and possible attainable performances. The best way to understand the details of current transport mechanisms and recombinations is to model the solar cells numerically. By numerical modeling, the processes which limit the cell performance can be sought and therefore, the most desirable designs for solar cells utilizing these materials as absorbers can be predicted. The problems with numerically modeling CuInSe2 and CdTe solar cells are that reported values of the pertinent material parameters vary over a wide range, and some quantities such as carrier concentration are not explicitly controlled.