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Get Free AccessTremendous work has been made recently to improve the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs); the best reported value is now over 23%. However, further improving the PCEs of PSCs is challenged by material properties, device stability, and packaging technologies. Here, we report a new approach to increase the PCEs of flexible PSCs via introducing the piezo-phototronic effect in the PSCs by growing an array of ZnO nanowires on flexible plastic substrates, which act as the electron-transport layer for PSCs. From the piezo-phototronic effect, the absolute PCE was improved from 9.3 to 12.8% for flexible perovskite solar cells under a static mechanical strain of 1.88%, with a ∼40% enhancement but no change in the components of materials and device structure. A corresponding working model was proposed to elucidate the strategy to boost the performance of the PSCs. These findings present a general approach to improve PCEs of flexible PSCs without changing their fundamental materials.
Junlu Sun, Qilin Hua, Ranran Zhou, Dongmei Li, Wenxi Guo, Xiaoyi Li, Guofeng Hu, Chongxin Shan, Qingbo Meng, Lin Dong, Caofeng Pan, Zhong Lin Wang (2019). Piezo-phototronic Effect Enhanced Efficient Flexible Perovskite Solar Cells. , 13(4), DOI: https://doi.org/10.1021/acsnano.9b00125.
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Type
Article
Year
2019
Authors
12
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1021/acsnano.9b00125
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