Improving the photovoltaic performance of planar heterojunction perovskite solar cells by mixed solvent vapor treatment.

ABSTRACT: The grain size of perovskite films is a key factor to optimize the performance of perovskite photovoltaic devices. Herein, a new route is developed in this paper to prepare CH₃NH₃PbI₃ (MAPbI₃) films with a better morphology and crystallization. This method includes the spin coating deposition of perovskite films with a precursor solution of PbI₂ and CH₃NH₃I at the molar ratio 1 : 1 and thermal annealing (TA). The thermal annealing is conducted with a thermal-induced process to realize grain growth with solvent evaporation. In addition, a mixed solvent vapor treatment in acetic acid with chlorobenzene (HAc/CB) improves the morphology and crystallization of films further. As a result, the photovoltaic device based o

SUBMITTER: Yuan B 

PROVIDER: S-EPMC9079065 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature