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High performance non-fullerene polymer solar cells based on PTB7-Th as electron donor with 10.42% efficiency

Abstract

In this work, we present a structurally-defined blue-shift non-fullerene electron acceptor (ITCT) matched with PTB7-Th as electron donor for high-performance fullerene-free polymer solar cells (PSCs). The PTB7-Th/ITCT blends based bulk-heterojunction (BHJ) devices give an appreciable PCE of 8.23% and a relatively high VOC 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 more ordered and crystalline morphology. Consequently, a high PCE of 10.42% has been revealed with a VOC of 0.95 V, a JSC 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 literature to date for the non-fullerene PSCs using PTB7-Th as the electron donor.

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Publication details

The article was received on 26 Nov 2017, accepted on 03 Jan 2018 and first published on 04 Jan 2018


Article type: Paper
DOI: 10.1039/C7TA10391C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    High performance non-fullerene polymer solar cells based on PTB7-Th as electron donor with 10.42% efficiency

    W. Tang, J. Sun, Z. Zhang, X. Yin, J. Zhou, L. Yang, R. Gen, F. Zhang, R. Zhu and J. Yu, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C7TA10391C

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