Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture

Long Hu, Qian Zhao, Shujuan Huang, Jianghui Zheng, Xinwei Guan, Robert Patterson, Jiyun Kim, Lei Shi, Chun-Ho Lin, Qi Lei, Dewei Chu, Wan Tao, Soshan Cheong, Richard D. Tilley, Anita W.Y. Ho-Baillie, Joseph M. Luther, Jianyu Yuan*, Tom Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
3 Downloads (Pure)

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.

Original languageEnglish
Article number466
Pages (from-to)1-9
Number of pages9
JournalNature Communications
Volume12
DOIs
Publication statusPublished - 20 Jan 2021

Bibliographical note

Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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