Depth-resolved Band Gap in Cu(In, Ga)(S, Se)2 Thin Films PDF Download
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Languages : en
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The surface composition of Cu(In, Ga)(S, Se)2 (?CIGSSe?) thin films intrinsically deviates from the corresponding bulk composition, which also modifies the electronic structure and thus the optical properties. We have used a combination of photon and electron spectroscopies with different information depths to gain depth-resolved information on the band gap energy (Eg) in CIG(S)Se thin films. We find an increasing Eg with decreasing information depth, indicating the formation of a surface region with significantly higher Eg. This Eg-widened surface region extends further into the bulk of the sulfur-free CIGSe thin film compared to the CIGSSe thin film.
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Languages : en
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Book Description
The surface composition of Cu(In, Ga)(S, Se)2 (?CIGSSe?) thin films intrinsically deviates from the corresponding bulk composition, which also modifies the electronic structure and thus the optical properties. We have used a combination of photon and electron spectroscopies with different information depths to gain depth-resolved information on the band gap energy (Eg) in CIG(S)Se thin films. We find an increasing Eg with decreasing information depth, indicating the formation of a surface region with significantly higher Eg. This Eg-widened surface region extends further into the bulk of the sulfur-free CIGSe thin film compared to the CIGSSe thin film.
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Category : Power resources
Languages : en
Pages : 508
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Category : Physics
Languages : en
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Category : Engineering
Languages : en
Pages : 1108
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Category : Electrical engineering
Languages : en
Pages : 2304
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Category : Physics
Languages : en
Pages : 1060
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Author: Richard Payling
Publisher: John Wiley & Sons
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Category : Science
Languages : en
Pages : 904
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Glow Discharge Optical Emission Spectrometry (GD-OES) is rapidly becoming one of the most important techniques for the direct analysis of solids. This, the first book entirely devoted to the subject, represents the combined contributions of over 30 specialists from around the world. All contributors are active in the field and recognised internationally for their expertise and knowledge in GD-OES. The book begins with an introductory overview of the subjects, deals with the design of the instrument, its operation and analytical methods and describes in detail the complex plasma processes which occur inside the glow discharge source. The second part of the book is more practically orientated, showing the full range of uses for GD-OES from the bulk analysis of virtually any solid material to depth profiling within the first tens of micrometres of a variety of surfaces and coatings. Glow Discharge Optical Emission Spectrometry is intended for a wide audience of scientists, engineers and postgraduate students and will be a valuable and challenging reference work for both experienced users of the technique and newcomers alike.
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Category : Aeronautics
Languages : en
Pages : 682
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Author: Tze-Chien Sum
Publisher: John Wiley & Sons
ISBN: 3527341110
Category : Technology & Engineering
Languages : en
Pages : 312
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Real insight from leading experts in the field into the causes of the unique photovoltaic performance of perovskite solar cells, describing the fundamentals of perovskite materials and device architectures. The authors cover materials research and development, device fabrication and engineering methodologies, as well as current knowledge extending beyond perovskite photovoltaics, such as the novel spin physics and multiferroic properties of this family of materials. Aimed at a better and clearer understanding of the latest developments in the hybrid perovskite field, this is a must-have for material scientists, chemists, physicists and engineers entering or already working in this booming field.
