Ion substitution in hybrid perovskites: enhancing environmental stability and band gap tuning (R-6722)

Perovskite solar cells have recently attracted a lot of attention because of their rapid increase in power conversion efficiency and their inherently low processing costs. Their tunable band gap and low energy losses enable their use in tandem configurations in combination with other solar cell technologies, such as silicon solar cells. The main issue currently standing in the way of commercialisation, is the limited stability of the current hybrid perovskite materials and the short device lifetimes. Therefore, this project focuses on gaining insight into the stability issues on the one hand and band gap tuning on the other hand. Both of these goals will be reached through ion substitutions compared to the current reference perovskites. Through such a systematic study, structure-property relations will be established. These insights will lead to tunable hybrid perovskites with enhanced stability.

Keywords:band gap, Perovskite solar cells, stability

Disciplines:Organic chemistry, Process engineering, Polymeric materials