Optical analysis of CH₃NH₃Sn _x Pb_1-x I₃ absorbers: a roadmap for perovskite-on-perovskite tandem solar cells.

ABSTRACT: Organic-inorganic perovskite structures in which lead is substituted by tin are exceptional candidates for broadband light absorption. Herein we present a thorough analysis of the optical properties of CH₃NH₃Sn _x Pb_1-x I₃ films, providing the field with definitive insights about the possibilities of these materials for perovskite solar cells of superior efficiency. We report a user's guide based on the first set of optical constants obtained for a series of tin/lead perovskite films, which was only possible to measure due to the preparation of optical quality thin layers. According to the Shockley-Queisser theory, CH₃NH₃Sn _x Pb_1-x I₃ compounds promise a

SUBMITTER: Anaya M 

PROVIDER: S-EPMC5059782 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature