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Issue 36, 2016
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Indium tin oxide (ITO)-free, top-illuminated, flexible perovskite solar cells

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Flexible and light-weight photovoltaics are desirable for applications that involve their integration with flexible electronics. In this study, we demonstrate efficient flexible perovskite solar cells with a novel device architecture (that is indium-tin-oxide (ITO) free and top-illuminated) using a low-temperature processed doped fullerene as the electron-transporting layer. Silver is used as the bottom electrode, and a transparent conducting polymer electrode is used as the top electrode for light illuminating through to the active layer. Stearyldimethylbenzylammonium chloride (SDBAC)-doped [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) was the electron-transporting layer wherein SDBAC could enhance the conductivity by three orders of magnitude and therefore enhance the solar cell performance. The ITO-free flexible perovskite solar cells display power conversion efficiency of 11.8% on a polyethersulfone substrate and can maintain 84% of the initial PCE after 1000 bending cycles at a bending radius of 6 mm.

Graphical abstract: Indium tin oxide (ITO)-free, top-illuminated, flexible perovskite solar cells

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Supplementary files

Article information

04 Aug 2016
10 Aug 2016
First published
11 Aug 2016

J. Mater. Chem. A, 2016,4, 14017-14024
Article type

Indium tin oxide (ITO)-free, top-illuminated, flexible perovskite solar cells

F. Qin, J. Tong, R. Ge, B. Luo, F. Jiang, T. Liu, Y. Jiang, Z. Xu, L. Mao, W. Meng, S. Xiong, Z. Li, L. Li and Y. Zhou, J. Mater. Chem. A, 2016, 4, 14017
DOI: 10.1039/C6TA06657G

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