Perovskite Materials in Photovoltaics

This chapter presents a summary of the design and development of perovskite-based functional materials for the application in perovskite solar cells (PSCs) and dye-sensitized solar cells (DSSCs) as the light absorbers, the electron transportation materials, and the photoelectrodes. The importance of increasing the power conversion efficiency (PCE) and the long-term operational stability is explained, and the operational principles and the functions, advantages, and requirements of the perovskite-based key functional materials for PSCs and DSSCs are described. Some design strategies to enhance the PCE and durability of perovskite-based PSCs and DSSCs are presented including the functional doping, morphology control, interfacial engineering, coupling and the defect control, etc. Some challenges and future research topics in this dynamic field are also presented in order to provide some useful guidelines for the future development of perovskite-based materials for photovoltaics (solar cell) applications. This chapter is interesting and useful to a broad readership in the various fields of PSCs, DSSCs, electrochemistry, photochemistry, photocatalysis, electrocatalysis, and so on.