High performance non-fullerene polymer solar cells based on PTB7-Th as the electron donor with 10.42% efficiency. Issue 6 (19th January 2018)

• Record Type: Journal Article
• Authors: Sun, Jia; Zhang, Zhuohan; Yin, Xinxing; Zhou, Jie; Yang, Linqiang; Geng, Renyong; Zhang, Fujun; Zhu, Rihong; Yu, Jiangsheng; Tang, Weihua
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 6(2018)
• Page Start: 2549
• Page End: 2554
• Publication Date: 2018-01-19
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta10391c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : In this work, we present a structurally defined blue-shift non-fullerene electron acceptor (ITCT ) matching with PTB7-Th as the electron donor for high-performance fullerene-free polymer solar cells (PSCs). Abstract : In this work, we present a structurally defined blue-shift non-fullerene electron acceptor (ITCT ) matching with PTB7-Th as the electron donor for high-performance fullerene-free polymer solar cells (PSCs). The PTB7-Th/ITCT blend based bulk-heterojunction (BHJ) devices give an appreciable PCE of 8.23% and a relatively high V OC of 0.96 V without any optimization. Upon device processing with thermal annealing and the addition of 0.1% DIO additive, the active layer achieves a more ordered and crystalline morphology. Consequently, a high PCE of 10.42% has been achieved with a V OC of 0.95 V, a J SC of 15.13 mA cm −2 and a high FF of 0.72. To the best of our knowledge, the PCE of 10.42% is among the highest values reported in the literature to date for non-fullerene PSCs using PTB7-Th as the electron donor.