p‐Type Charge Transfer Doping of Graphene Oxide with (NiCo)1−yFeyOx for Air‐Stable, All‐Inorganic CsPbIBr2 Perovskite Solar Cells.
- Resource Type
- Article
- Authors
- Du, Jian; Duan, Jialong; Yang, Xiya; Duan, Yanyan; Zhou, Quanzhu; Tang, Qunwei
- Source
- Angewandte Chemie. 5/3/2021, Vol. 133 Issue 19, p10702-10707. 6p.
- Subject
- *GRAPHENE oxide
*CHARGE transfer
*SOLAR cells
*SOLAR cell efficiency
*PRECIOUS metals
*PEROVSKITE
- Language
- ISSN
- 0044-8249
The precise regulation of interfacial charge distribution highly determines the power conversion efficiency of perovskite solar cells (PSCs). Herein, inorganic (NiCo)1−yFeyOx nanoparticle decorated graphene oxide (GO) is successfully demonstrated as a hole booster for all‐inorganic CsPbIBr2 PSC free of precious metal electrode. Arising from the spontaneous electron transfer induced p‐type doping of GO from edged oxygen‐containing functional groups to (NiCo)1−yFeyOx, the best all‐inorganic CsPbIBr2 PSC achieves an efficiency of 10.95 % under one standard sun owing to the eliminated paradox between charge extraction and charge localization in GO surface. Furthermore, the champion device exhibits an excellent long‐term stability at 10 % relative humidity without encapsulation over 70 days because of the suppressed ions migration. [ABSTRACT FROM AUTHOR]