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Amorphous Silicon Research Final Technical Progress Report 1 August 1994 28 February 1998
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Book Synopsis Amorphous Silicon Research. Final Technical Progress Report, 1 August 1994--28 February 1998 by :
Download or read book Amorphous Silicon Research. Final Technical Progress Report, 1 August 1994--28 February 1998 written by and published by . This book was released on 1998 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the status and accomplishments of work performed under this subcontract by United Solar Systems. United Solar researchers explored several new deposition regimes/conditions to investigate their effect on material/device performance. To facilitate optimum ion bombardment during growth, a large parameter space involving chamber pressure, rf power, and hydrogen dilution were investigated. United Solar carried out a series of experiments using discharge modulation at various pulsed-plasma intervals to study the effect of Si-particle incorporation on solar cell performance. Hydrogen dilution during deposition is found to improve both the initial and stable performance of a-Si and a-SiGe alloy cells. Researchers conducted a series of temperature-ramping experiments on samples prepared with high and low hydrogen dilutions to study the effect of hydrogen effusion on solar cell performance. Using an internal photoemission method, the electrical bandgap of a microcrystalline p layer used in high-efficiency solar cells was measured to be 1.6 eV. New measurement techniques were developed to evaluate the interface and bulk contributions of losses to solar cell performance. Researchers replaced hydrogen with deuterium and found deuterated amorphous silicon alloy solar cells exhibit reduced light-induced degradation. The incorporation of a microcrystalline n layer in a multijunction cell is seen to improve cell performance. United Solar achieved a world-record single-junction a-Si alloy stable cell efficiency of 9.2% with an active area of 0.25 cm2 grown with high hydrogen dilution. They also achieved a world-record triple-junction, stable, active-area cell efficiency of 13.0% with an active area of 0.25 cm2.
Book Synopsis Amorphous Silicon Research. Final Technical Progress Report, 1 August 1994--28 February 1998 by :
Download or read book Amorphous Silicon Research. Final Technical Progress Report, 1 August 1994--28 February 1998 written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the status and accomplishments of work performed under this subcontract by United Solar Systems. United Solar researchers explored several new deposition regimes/conditions to investigate their effect on material/device performance. To facilitate optimum ion bombardment during growth, a large parameter space involving chamber pressure, rf power, and hydrogen dilution were investigated. United Solar carried out a series of experiments using discharge modulation at various pulsed-plasma intervals to study the effect of Si-particle incorporation on solar cell performance. Hydrogen dilution during deposition is found to improve both the initial and stable performance of a-Si and a-SiGe alloy cells. Researchers conducted a series of temperature-ramping experiments on samples prepared with high and low hydrogen dilutions to study the effect of hydrogen effusion on solar cell performance. Using an internal photoemission method, the electrical bandgap of a microcrystalline p layer used in high-efficiency solar cells was measured to be 1.6 eV. New measurement techniques were developed to evaluate the interface and bulk contributions of losses to solar cell performance. Researchers replaced hydrogen with deuterium and found deuterated amorphous silicon alloy solar cells exhibit reduced light-induced degradation. The incorporation of a microcrystalline n layer in a multijunction cell is seen to improve cell performance. United Solar achieved a world-record single-junction a-Si alloy stable cell efficiency of 9.2% with an active area of 0.25 cm2 grown with high hydrogen dilution. They also achieved a world-record triple-junction, stable, active-area cell efficiency of 13.0% with an active area of 0.25 cm2.
Download or read book Amorphous Silicon Research written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thin-film Amorphous Silicon Alloy Research Partnership by : S. Guha
Download or read book Thin-film Amorphous Silicon Alloy Research Partnership written by S. Guha and published by . This book was released on 1998 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amorphous Silicon Research by : S. Guha
Download or read book Amorphous Silicon Research written by S. Guha and published by . This book was released on 1995 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Amorphous Silicon Research. Phase III Technical Progress Report, August 1, 1996--July 31, 1997 by :
Download or read book Amorphous Silicon Research. Phase III Technical Progress Report, August 1, 1996--July 31, 1997 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal objective of this R & D program is to expand, enhance and accelerate knowledge and capabilities for the development of high-performance, two-terminal multijunction hydrogenated amorphous silicon (a-Si) alloy cells and modules. The near-term goal of the program is to achieve 12% stable active-area efficiency using the multijunction approach. The long-term goal is to achieve 15% stable efficiency multijunction modules. The major effort of this program is to develop high efficiency component cells and incorporate them in the triple-junction structure to obtain the highest stable efficiency. New and improved deposition regimes were investigated to obtain better cell performance. Fundamental studies to obtain better understanding of material and cell performance were undertaken.
Book Synopsis Amorphous Silicon Research Phase I. Annual Subcontract Report, August 1, 1994--July 31, 1995 by :
Download or read book Amorphous Silicon Research Phase I. Annual Subcontract Report, August 1, 1994--July 31, 1995 written by and published by . This book was released on 1995 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Principal objective of this R & D program is to expand, enhance and accelerate knowledge and capabilities for the development of high-performance, two-terminal multifunction hydrogenated amorphous silicon (a-Si:H) alloy modules. The near-term goal of the program is to achieve 12% stable efficiency by 1998 using the multifunction approach. The major effort of this program is to develop high efficiency component cells and incorporate them in the triple-junction structure to obtain the highest stable efficiency. The bulk of the effort was directed toward the middle and bottom cell structure. New and improved deposition regimes were investigated to obtain better cell performance. Fundamental studies to obtain better understanding of material and cell performance were undertaken.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-05 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thin-film Amorphous Silicon Alloy Research Partnership. Phase 2, Annual Technical Progress Report, 2 February 1996--1 February 1997 by :
Download or read book Thin-film Amorphous Silicon Alloy Research Partnership. Phase 2, Annual Technical Progress Report, 2 February 1996--1 February 1997 written by and published by . This book was released on 1997 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Phase II of a 3-phase, 3-year program. It is intended to expand, enhance, and accelerate knowledge and capabilities for developing high-performance, two-terminal multijunction amorphous Si alloy modules. We discuss investigations on back reflectors to improve cell performance and investigate uniformity in performance over a 1-sq.-ft. area. We present results on component cell performance, both in the initial and in the light-degraded states, deposited over a 1-sq.-ft. area. The uniformity in deposited is investigated by studying the performance of subcells deposited over the entire area. We also present results on the performance of triple- junction cells and modules. The modules use grid-lines and encapsulants compatible with our production technology. We discuss the novel laser-processing technique that has bee developed at United Solar to improve energy-conversion efficiency and reduce manufacturing costs. We discuss in detail the optimization of the processing steps, and the performance of a laser-processed, triple- junction device of 12.6 cm2 area is presented. We also present experimental results on investigations of module reliability.
Book Synopsis Thin-film Amorphous Silicon Alloy Research Partnership, Phase I. Annual Technical Progress Report, February 2, 1995--February 1, 1996 by :
Download or read book Thin-film Amorphous Silicon Alloy Research Partnership, Phase I. Annual Technical Progress Report, February 2, 1995--February 1, 1996 written by and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal objective of this R & D program is to expand, enhance and accelerate knowledge and capabilities for the development of high-performance, two-terminal multifunction amorphous silicon (a-Si) alloy modules. The near-term goal of the program is to achieve 12% stable module efficiency by 1998 using the multifunction approach. This report describes research on back reflectors of Ag/TiO2/ZnO.
Book Synopsis Solar Electric Power System Analyses for Mars Surface Missions by :
Download or read book Solar Electric Power System Analyses for Mars Surface Missions written by and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solar Cells and Modules by : Arvind Shah
Download or read book Solar Cells and Modules written by Arvind Shah and published by Springer Nature. This book was released on 2020-07-16 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive introduction to the field of photovoltaic (PV) solar cells and modules. In thirteen chapters, it addresses a wide range of topics including the spectrum of light received by PV devices, the basic functioning of a solar cell, and the physical factors limiting the efficiency of solar cells. It places particular emphasis on crystalline silicon solar cells and modules, which constitute today more than 90 % of all modules sold worldwide. Describing in great detail both the manufacturing process and resulting module performance, the book also touches on the newest developments in this sector, such as Tunnel Oxide Passivated Contact (TOPCON) and heterojunction modules, while dedicating a major chapter to general questions of module design and fabrication. Overall, it presents the essential theoretical and practical concepts of PV solar cells and modules in an easy-to-understand manner and discusses current challenges facing the global research and development community.
Book Synopsis Crystalline Silicon Solar Cells by : Adolf Goetzberger
Download or read book Crystalline Silicon Solar Cells written by Adolf Goetzberger and published by . This book was released on 1998 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Human Health and Performance Risks of Space Exploration Missions by : Jancy C. McPhee
Download or read book Human Health and Performance Risks of Space Exploration Missions written by Jancy C. McPhee and published by U. S. National Aeronautics & Space Administration. This book was released on 2009 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Unesco Publisher :UNESCO Principal Regional Office for Asia & the Pacific ISBN 13 :9789231034466 Total Pages :292 pages Book Rating :4.0/5 (344 download)
Book Synopsis World Science Report 1998 by : Unesco
Download or read book World Science Report 1998 written by Unesco and published by UNESCO Principal Regional Office for Asia & the Pacific. This book was released on 1998 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This year's edition of the World Science Report examines the role played by science in resolving the major issues facing human society, such as food security, water resources and disease.
