ALARAJ, MAHA MUSTAFA2022-05-182022-05-1820161304https://drepo.sdl.edu.sa/handle/20.500.14154/3850The demand for energy of modern society is constantly increasing. The desire for environmental friendly alternative energy resources with least dependence on fossil fuels is growing. Thin-film polycrystalline solar cells are an excellent candidate for clean energy production. Over the recent years, by its direct bandgap of 1.5eV CuInS2 (CIS) has emerged as a promising absorber material for the thin film solar cells application. In this research thesis, copper indium disulfide (CIS) nanopowder waenThesis