28 August 2017 Simply modified indium tin oxides by ultrathin aluminum and sodium chloride composite interlayer for high performance inverted polymer solar cells
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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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shuang Zheng, Shuang Zheng, Zhenxuan Wu, Zhenxuan Wu, Chuan Zhang, Chuan Zhang, Huan Liu, Huan Liu, Minnan Yan, Minnan Yan, Xiaodan Su, Xiaodan Su, Jin Wang, Jin Wang, Hongmei Zhang, Hongmei Zhang, Dongge Ma, 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 . Submission: Received: 21 March 2017; Accepted: 30 June 2017
Received: 21 March 2017; Accepted: 30 June 2017; Published: 28 August 2017
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