An Efficient Trap Passivator for Perovskite Solar Cells: Poly(propylene glycol) bis(2-aminopropyl ether).

ABSTRACT: Perovskite solar cells (PSCs) are regarded as promising candidates for future renewable energy production. High-density defects in the perovskite films, however, lead to unsatisfactory device performances. Here, poly(propylene glycol) bis(2-aminopropyl ether) (PEA) additive is utilized to passivate the trap states in perovskite. The PEA molecules chemically interact with lead ions in perovskite, considerably passivate surface and bulk defects, which is in favor of charge transfer and extraction. Furthermore, the PEA additive can efficiently block moisture and oxygen to prolong the device lifetime. As a result, PEA-treated MAPbI₃ (MA: CH₃NH₃) solar cells show increased power conversion efficiency (PCE) (from 17.18 to 18.87%) and good long-term stability. Whe

SUBMITTER: Chen N 

PROVIDER: S-EPMC7770690 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature