Triple-cation mixed-halide perovskites: towards efficient, annealing-free and air-stable solar cells enabled by Pb(SCN)₂ additive.

ABSTRACT: Organo-metal halide perovskites have suffered undesirably from structural and thermal instabilities. Moreover, thermal annealing is often indispensable to the crystallization of perovskites and removal of residual solvents, which is unsuitable for scalable fabrication of flexible solar modules. Herein, we demonstrate the non-thermal annealing fabrication of a novel type of air-stable triple-cation mixed-halide perovskites, FA_0.7MA_0.2Cs_0.1Pb(I_5/6Br_1/6)₃ (FMC) by incorporation of Pb(SCN)₂ additive. It is found that adding Pb(SCN)₂ functions the same as thermal annealing process by not only improving the crystallinity and optical absorption of perovskites, but also hindering the formation of morphological

SUBMITTER: Sun Y 

PROVIDER: S-EPMC5382775 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature