期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 7, 期 5, 页码 2268-2274出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta11637g
关键词
-
资金
- NSFC [21734001, 51761165023, 21504066, 21704082]
- Ministry of Science and Technology of China [2016YFA0200700]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
We used mid-bandgap small molecule donor TR as a third component to fabricate ternary nonfullerene organic solar cells (OSCs) based on narrow-bandgap polymer donor PTB7-Th and narrow-bandgap nonfullerene acceptor FOIC. TR exhibits full miscibility with PTB7-Th and efficient energy transfer to PTB7-Th, enhances stacking of PTB7-Th, hole mobility and charge generation of the blends, and ultimately improves device performance. Compared with the binary PTB7-Th/FOIC blend, the ternary device with 25% TR (w/w) yields simultaneously improved open-circuit voltage, short-circuit current density and fill factor. Finally, single-junction OSCs based on the ternary PTB7-Th/TR/FOIC blend yield power conversion efficiency as high as 13.1%, higher than the binary OSCs (12.1%). The ternary device efficiency exhibits high tolerance to thickness variation (>12% in the range of 80-200 nm). Transient absorption spectroscopy confirms the importance of long-range resonant energy transfer from donor to acceptor phases.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据