Study on the long time aging behavior of MAPbI₃: from experiment to first-principles simulation.

ABSTRACT: As the core functional layer of perovskite solar cells, the serious issues of the CH₃NH₃PbI₃ film related to the long-term stability and its rapid degradation when exposed to the environment should be investigated deeply. In this study, the variation of phase construction, light absorption ability and fluorescence quenching ability during the long time aging process have been monitored. The results show that the degradation process is composed of the original serious fluorescence quenching and the lag behind phase decomposition. Then, the intrinsic physical mechanism has been obtained by the first-principles simulation of defect properties, which shows that the original serious fluorescence emission quenching is attributed to the deep level defects with low

SUBMITTER: Li Y 

PROVIDER: S-EPMC9667950 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature