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- Title
Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture.
- Authors
Hu, Long; Zhao, Qian; Huang, Shujuan; Zheng, Jianghui; Guan, Xinwei; Patterson, Robert; Kim, Jiyun; Shi, Lei; Lin, Chun-Ho; Lei, Qi; Chu, Dewei; Tao, Wan; Cheong, Soshan; Tilley, Richard D.; Ho-Baillie, Anita W. Y.; Luther, Joseph M.; Yuan, Jianyu; Wu, Tom
- Abstract
All-inorganic CsPbI3 perovskite quantum dots have received substantial research interest for photovoltaic applications because of higher efficiency compared to solar cells using other quantum dots materials and the various exciting properties that perovskites have to offer. These quantum dot devices also exhibit good mechanical stability amongst various thin-film photovoltaic technologies. We demonstrate higher mechanical endurance of quantum dot films compared to bulk thin film and highlight the importance of further research on high-performance and flexible optoelectronic devices using nanoscale grains as an advantage. Specifically, we develop a hybrid interfacial architecture consisting of CsPbI3 quantum dot/PCBM heterojunction, enabling an energy cascade for efficient charge transfer and mechanical adhesion. The champion CsPbI3 quantum dot solar cell has an efficiency of 15.1% (stabilized power output of 14.61%), which is among the highest report to date. Building on this strategy, we further demonstrate a highest efficiency of 12.3% in flexible quantum dot photovoltaics. Perovskite quantum dots film has better mechanical stability and structural integrity compared to bulk thin film. Here, the authors demonstrate higher endurance of quantum dot films and develop hybrid CsPbI3 QD/PCBM device with PCE of 15.1% and 12.3% on rigid and flexible substrates, respectively.
- Subjects
HYBRID solar cells; ELECTRON transport; QUANTUM dots; SOLAR cell efficiency; QUANTUM dot devices; SILICON solar cells; DYE-sensitized solar cells; PEROVSKITE
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-020-20749-1