Investigation of Thin Film Cadmium Sulfide Solar Cells PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Investigation of Thin Film Cadmium Sulfide Solar Cells PDF full book. Access full book title Investigation of Thin Film Cadmium Sulfide Solar Cells by J. C. Schaefer. Download full books in PDF and EPUB format.
Author: J. C. Schaefer
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages : 60
Get Book Here
Book Description
Research and development of a large area CdS, vacuum evaporated, thin film, flexible, lightweight, front wall solar cell was continued in an effort to improve the performance characteristics. Efficiencies were increased to a maximum of 5.1%. Power to weight ratios of 15 watts per pound are normal with 30 as a maximum. An upgrading procedure for low efficiency cells was developed. Test panels were submitted for a 30 day orbital space flight evaluation. Electron damage experiments indicate little effect on the CdS solar cells. X-ray techniques have been used to photograph dislocations in single crystal CdS. Current-voltage curves and spectral response data analyses resulted in a one-trap model of the CdS photovoltaic cell. (Author).
Author: J. C. Schaefer
Publisher:
ISBN:
Category : Cadmium sulfide
Languages : en
Pages : 60
Get Book Here
Book Description
Research and development of a large area CdS, vacuum evaporated, thin film, flexible, lightweight, front wall solar cell was continued in an effort to improve the performance characteristics. Efficiencies were increased to a maximum of 5.1%. Power to weight ratios of 15 watts per pound are normal with 30 as a maximum. An upgrading procedure for low efficiency cells was developed. Test panels were submitted for a 30 day orbital space flight evaluation. Electron damage experiments indicate little effect on the CdS solar cells. X-ray techniques have been used to photograph dislocations in single crystal CdS. Current-voltage curves and spectral response data analyses resulted in a one-trap model of the CdS photovoltaic cell. (Author).
Author: Xiawa Wu
Publisher: ProQuest
ISBN: 9780549924876
Category : Cadmium compounds
Languages : en
Pages :
Get Book Here
Book Description
CdTe/CdS solar cell is one of the promising low cost high efficiency thin film solar cells. In this work, thin film CdS properties and the effect of CdS surface conditions on CdTe growth and performance of polycrystalline CdTe/CdS thin film solar cells are investigated. Thin film CdS optical, structural and chemical properties both as deposited and after CdCl 2 heat treatment are measured. CdS surface chemical state is studied by analyzing its surface chemistry after different surface treatments. Qualitative and quantitative measurements indicate sulfate and sulfite phases on thin film CdS surfaces as well as single crystal CdS, caused by oxidation in the air. The degree of CdS oxidation is highly dependent on thermal treatment ambient, temperature and time. Results indicate reduction in grain size and smoother morphology for CdTe deposited on heavily oxidized CdS compared to chemically reduced CdS surface. Solar cell open circuit voltage is much lower on cells with heavily oxidized CdS surface.
Author: Hughes Aircraft Company. Research Laboratories
Publisher:
ISBN:
Category : Cadmium compounds
Languages : en
Pages : 30
Get Book Here
Book Description
Author: Wai Ming Tsang
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Get Book Here
Book Description
Author: Alan Fahrenbruch
Publisher: Elsevier
ISBN: 0323145388
Category : Technology & Engineering
Languages : en
Pages : 580
Get Book Here
Book Description
Fundamentals of Solar Cells: Photovoltaic Solar Energy Conversion provides an introduction to the fundamental physical principles of solar cells. It aims to promote the expansion of solar photovoltaics from relatively small and specialized use to a large-scale contribution to energy supply. The book begins with a review of basic concepts such as the source of energy, the role of photovoltaic conversion, the development of photovoltaic cells, and sequence of phenomena involved in solar power generation. This is followed by separate chapters on each of the processes that take place in solar cell. These include solar input; properties of semiconductors; recombination and the flow of photogenerated carriers; charge separation and the characteristics of junction barriers; and calculation of solar efficiency. Subsequent chapters deal with the operation of specific solar cell devices such as a single-crystal homojunction (Si); a single-crystal-heterojunction/buried-homojunction (AlGaAs/GaAs); and a polycrystalline, thin-film cell (CuxS/CdS). This book is intended for upper-level graduate students who have a reasonably good understanding of solid state physics and for scientists and engineers involved in research and development of solar cells.
Author: John G. Ewashinka
Publisher:
ISBN:
Category : Solar cells
Languages : en
Pages : 28
Get Book Here
Book Description
Author: John J. Smithrick
Publisher:
ISBN:
Category : Cadmium sulfide photoconductive cells
Languages : en
Pages : 20
Get Book Here
Book Description
Thin-film Cu2S-CdS solar cells, loaded at various fixed values of load resistance, were thermally cycled for 1429 cycles in a simulated space environment. Cell performance was measured under controlled conditions in air before and after thermal cycling. These data were used to determine the effect of load voltage on cell performance. The performance of the cells was relatively independent of load voltage up to about 0.39 volt. This appears to be a threshold voltage, beyond which there was a significant loss in cell performance. Fortunately, this threshold voltage appears to be sufficiently higher than the maximum power voltage of 0.33 volt so that it can be avoided in most applications.
Author: John J. Smithrick
Publisher:
ISBN:
Category : Effects of Thermal-Shock Cycling on Thin-Film Cadmium Sulfide Solar Cells
Languages : en
Pages : 24
Get Book Here
Book Description
Thermal-shock cycling of Kapton, copper, and molybdenum substrate thin-film cadmium sulfide solar cells was conducted by alternately heating the cells between two heater plates and dipping them into liquid nitrogen.
Author: Adolph E. Spakowski
Publisher:
ISBN:
Category : Solar cells
Languages : en
Pages : 28
Get Book Here
Book Description
Author: Subba Ramaiah Kodigala
Publisher: Newnes
ISBN: 0123971829
Category : Technology & Engineering
Languages : en
Pages : 197
Get Book Here
Book Description
The fundamental concept of the book is to explain how to make thin film solar cells from the abundant solar energy materials by low cost. The proper and optimized growth conditions are very essential while sandwiching thin films to make solar cell otherwise secondary phases play a role to undermine the working function of solar cells. The book illustrates growth and characterization of Cu2ZnSn(S1-xSex)4 thin film absorbers and their solar cells. The fabrication process of absorber layers by either vacuum or non-vacuum process is readily elaborated in the book, which helps for further development of cells. The characterization analyses such as XPS, XRD, SEM, AFM etc., lead to tailor the physical properties of the absorber layers to fit well for the solar cells. The role of secondary phases such as ZnS, Cu2-xS,SnS etc., which are determined by XPS, XRD or Raman, in the absorber layers is promptly discussed. The optical spectroscopy analysis, which finds band gap, optical constants of the films, is mentioned in the book. The electrical properties of the absorbers deal the influence of substrates, growth temperature, impurities, secondary phases etc. The low temperature I-V and C-V measurements of Cu2ZnSn(S1-xSex)4 thin film solar cells are clearly described. The solar cell parameters such as efficiency, fill factor, series resistance, parallel resistance provide handful information to understand the mechanism of physics of thin film solar cells in the book. The band structure, which supports to adjust interface states at the p-n junction of the solar cells is given. On the other hand the role of window layers with the solar cells is discussed. The simulation of theoretical efficiency of Cu2ZnSn(S1-xSex)4 thin film solar cells explains how much efficiency can be experimentally extracted from the cells. - One of the first books exploring how to conduct research on thin film solar cells, including reducing costs - Detailed instructions on conducting research
