Abstract
Copper indium gallium selenide (CIGS)-based solar cells have received worldwide attention for solar power generation. It is an efficient thin-film solar cell having achieved more than 23% efficiency on laboratory scale, which is comparable to crystalline silicon (c-Si) wafer-based solar cells. CIGS solar cells have also achieved more than 20% efficiency on flexible polyimide substrate making it most suitable thin-film solar cells. One of the major challenge for small area devices is precise control of stoichiometry and efficiency over CIGS film. For industrial production, apart from stoichiometry and efficiency, high-throughput, reproducibility, low-cost and process tolerance are of much importance in commercializing the technology. In this chapter, after briefly reviewing the history of chalcopyrite system, graded bandgap, effects of sodium distribution in CIGS layer, growth of CIGS layer using various techniques, role of buffer layer and their alternatives, transparent conducting oxides, progress related to flexible solar cells and factors affecting the cell efficiency will be are discussed. Further, options for efficiency improvement, challenges and future prospects of CIGS solar cells will be discussed.
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Kumar, V., Prasad, R., Chaure, N.B., Singh, U.P. (2022). Advancement in Copper Indium Gallium Diselenide (CIGS)-Based Thin-Film Solar Cells. In: Singh, U.P., Chaure, N.B. (eds) Recent Advances in Thin Film Photovoltaics. Advances in Sustainability Science and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-19-3724-8_2
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