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Highly efficient polymer solar cells employing natural chlorophyllin as a cathode interfacial layer

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Abstract

Development of green and low-cost interfacial materials is an important issue to promote the commercialization of polymer solar cells (PSC). In this study, a derivative of natural chlorophyll, called chlorophyllin (CuCN), is applied as a cathode interfacial layer (CIL) to effectively improve the charge-carrier transportation and collection of both fullerene and non-fullerene based PSCs. As a result, the high power conversion efficiency of 8.35% and 10.55% is achieved for fullerene PTB7:PC71BM-based devices and non-fullerene PBDB-T:IT-M-based devices, respectively. Notably, the natural chlorophyllin is a green food additive with low cost and solution-processability. This study demonstrates that the environment-friendly chlorophyllin is a promising CIL material to fabricate highly efficient solution-processed PSCs with a large area and low cost.

Graphical abstract: Highly efficient polymer solar cells employing natural chlorophyllin as a cathode interfacial layer

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Publication details

The article was received on 20 Oct 2017, accepted on 25 Nov 2017 and first published on 27 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA09233D
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Highly efficient polymer solar cells employing natural chlorophyllin as a cathode interfacial layer

    Q. Guan, R. Peng, Z. Liu, W. Song, R. Yang, L. Hong, T. Lei, X. Fan, Q. Wei and Z. Ge, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA09233D

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