Oxygen Vacancy Mediation in SnO 2 Electron Transport Layers Enables Efficient, Stable, and Scalable Perovskite Solar Cells
Northwestern Polytechnical University · Chinese Academy of Sciences · +5 more institutions
Abstract
Previous findings have suggested a close association between oxygen vacancies in SnO2 and charge carrier recombination as well as perovskite decomposition at the perovskite/SnO2 interface. Underlying the fundamental mechanism holds great significance in achieving a more favorable balance between the efficiency and stability. In this study, we prepared three SnO2 samples with different oxygen vacancy concentrations and observed that a low oxygen vacancy concentration is conducive to long-term device stability. Iodide ions were observed to easily diffuse into regions with high oxygen vacancies, thereby speeding up the deprotonation of FAI, as made evident by the detection of the decomposition product formamide.…
Citation impact
- FWCI
- 21.21
- Percentile
- 100%
- References
- 43
Authors
14- QZQiangqiang Zhao
Northwestern Polytechnical University, Chinese Academy of Sciences, Qingdao Institute of Bioenergy and Bioprocess Technology
- BZBingqian Zhang
Chinese Academy of Sciences, Qingdao Institute of Bioenergy and Bioprocess Technology
- WHWei Hui
Northwestern Polytechnical University
- ZSZhenhuang Su
Chinese Academy of Sciences, Shanghai Advanced Research Institute
- HWHan Wang
Xi'an Polytechnic University
Topics & keywords
- Chemistry
- Perovskite (structure)
- Oxygen
- Vacancy defect
- Electron
- Chemical physics
- Chemical engineering
- Nanotechnology