Simply modified indium tin oxides by ultrathin aluminum and sodium chloride composite interlayer for high performance inverted polymer solar cells

Shuang Zheng; Zhenxuan Wu; Chuan Zhang; Huan Liu; Minnan Yan; Xiaodan Su; Jin Wang; Hongmei Zhang; Dongge Ma

doi:10.1117/1.JPE.7.035502

28 August 2017 Simply modified indium tin oxides by ultrathin aluminum and sodium chloride composite interlayer for high performance inverted polymer solar cells

Shuang Zheng, Zhenxuan Wu, Chuan Zhang, Huan Liu, Minnan Yan, Xiaodan Su, Jin Wang, Hongmei Zhang, Dongge Ma

Author Affiliations +

Journal of Photonics for Energy, Vol. 7, Issue 3, 035502 (August 2017). https://doi.org/10.1117/1.JPE.7.035502

Abstract

We report the fabrication of high performance inverted polymer solar cells with simply modified indium tin oxide (ITO) by an ultrathin aluminum (Al) and sodium chloride (NaCl) composite layer. The device efficiency and stability were both improved. The optimized device with poly(3-hexylthiophene) as the donor and [6,6]-phenyl-C61-butyric acid methylester as the acceptor under AM 1.5 (100 mw cm⁻²) radiation achieved a high power conversion efficiency of 3.88% with an open-circuit voltage of 0.60 V and a fill factor of 0.61, which is significantly higher than those of the inverted devices with only Al or NaCl as modification interlayer, respectively. Moreover, the stability is enhanced by about 70% more than that of the conventional device. The significant enhancement is attributed to the reduced work function of ITO electrode from 4.75 to 3.90 eV by modification as well as the improvement of the electrode interface.

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Shuang Zheng, Zhenxuan Wu, Chuan Zhang, Huan Liu, Minnan Yan, Xiaodan Su, Jin Wang, Hongmei Zhang, and Dongge Ma "Simply modified indium tin oxides by ultrathin aluminum and sodium chloride composite interlayer for high performance inverted polymer solar cells," Journal of Photonics for Energy 7(3), 035502 (28 August 2017). https://doi.org/10.1117/1.JPE.7.035502

Received: 21 March 2017; Accepted: 30 June 2017; Published: 28 August 2017

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