期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 6, 页码 2549-2554出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta10391c
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资金
- National Natural Science Foundation of China [51573077]
- 333 Project to Cultivate High Level Talents in Jiangsu Province
- Six Talent Peaks Project in Jiangsu Province
- Jiangsu Province Natural Science Foundation for Distinguished Young Scholars [BK20130032]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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.
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