CIGS Thin Film Photovoltaic—Approaches and Challenges
After a short overview of the historical development of the Cu(In, Ga)Se 2 (CIGS) thin film solar cell and its special features, we give an overview of the deposition and optimization of the p-type CIGS absorber as well as the subsequent n-type buffer layer and the molybdenum back contact. Developments to increase efficiency by optimizing the …