Thin Films and Tandem Solar Cells

This lecture covers the fundamentals and processes for photovoltaic devices, focusing on thin film technologies and novel concepts. It discusses the advantages and drawbacks of thin films compared to wafers, such as high efficiency, reduced material use, flexibility, and lower energy payback time. Various types of thin film solar cells, including CdTe, CIGS, and perovskite cells, are explored. The lecture also delves into the energy payback time for different solar systems, the market status of thin film technologies, and the challenges and advancements in deposition methods. Additionally, it touches on the efficiencies of different solar cell technologies and the potential of multijunction cells with dichroic mirrors.