Cu(In1-xGax)Se2 Based Thin Film Solar Cells (eBook)

This book provides valuable content, particularly on the fabrication of chalcopyrite based thin film solar cells. The characterization of the layers in the solar cells, mainly absorbers (CuInGaSe2), buffers, window layers, antireflection coatings, finally metallic grids on top of the solar cell is obviously very important. When fabricating this kind of thin film solar cells, what are the problems arisen, how these can be encountered using characterization tools, more importantly, the XPS, XRD, AES, SEM, Raman, Photoluminescence, Electrical measurements etc. The absorber, which contains multiple elements always gives segregation of secondary phase, if the growth conditions are not appropriate that is the main drawback to grow thin film layers. This kind of problems and solutions are given in detail in the book. In first place, the electrical conversion of the CuInGaSe2 thin film solar cell is illustrated with basic sciences. What are the important criteria to enhance the efficiency of the solar cells, modules and their functions with environmental factors such as temperature, aging etc., are illustrated with several examples.

? Illustrates a number of growth techniques to prepare thin film layers for solar cells
? Discusses characterization techniques such as XRD, TEM, XPS, AFM, SEM, PL, CL, Optical measurements, and Electrical measurements
? Includes I-V, C-V measurements illustrations
? Provides analysis of solar cell efficiency
? Presents current trends in thin film solar cells research and marketing

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Cu(In1-xGax)Se2 Based Thin Film Solar Cells provides valuable contents about the fabrication and characterization of chalcopyrite Cu(In1-xGax)Se2 based thin film solar cells and modules. The growth of chalcopyrite Cu(In1-xGax)(S1-ySey)2 absorbers, buffers, window layers, antireflection coatings, and finally metallic grids, which are the sole components of solar cells, is clearly illustrated. The absorber, which contains multiple elements, segregates secondary phases if the growth conditions are not well optimized i.e., the main drawback in the fabrication of solar cells. More importantly the solutions for the growth of thin films are given in detail. The properties of all the individual layers and single crystals including solar cells analyzed by different characterization techniques such as SEM, AFM, XPS, AES, TEM, XRD, optical, photoluminescence, and Raman spectroscopy are explicitly demonstrated. The electrical analyses such as conductivities, Hall mobilities, deep level transient spectroscopy measurements etc., provide a broad picture to understand thin films or single crystals and their solar cells. The book clearly explains the working principle of energy conversion from solar to electrical with basic sciences for the chalcopyrite based thin film solar cells. Also, it demonstrates important criteria on how to enhance efficiency of the solar cells and modules. The effect of environmental factors such as temperature, humidity, aging etc., on the devices is mentioned by citing several examples. Illustrates a number of growth techniques to prepare thin film layers for solar cells Discusses characterization techniques such as XRD, TEM, XPS, AFM, SEM, PL, CL, Optical measurements, and Electrical measurements Includes I-V, C-V measurements illustrations Provides analysis of solar cell efficiency Presents current trends in thin film solar cells research and marketing