TY - JOUR
T1 - High-performance organic solar cells based on polymer donor/small molecule donor/nonfullerene acceptor ternary blends
AU - Dai, Shuixing
AU - Chandrabose, Sreelakshmi
AU - Xin, Jingming
AU - Li, Tengfei
AU - Chen, Kai
AU - Xue, Peiyao
AU - Liu, Kuan
AU - Zhou, Ke
AU - Ma, Wei
AU - Hodgkiss, Justin M.
AU - Zhan, Xiaowei
N1 - Funding Information:
X. Z. wish to thank the NSFC (No. 21734001 and 51761165023). W. M. thanks for the support from Ministry of Science and Technology of China (No. 2016YFA0200700), NSFC (21504066, and 21704082). X-ray data was acquired at beamlines 7.3.3 and 11.0.1.2 at the Advanced Light Source, which is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The authors thank Chenhui Zhu at beamline 7.3.3, and Cheng Wang at beamline 11.0.1.2 for assistance with data acquisition.
Publisher Copyright:
© 2019 The Royal Society of Chemistry.
PY - 2019/1
Y1 - 2019/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85060783873&partnerID=8YFLogxK
U2 - 10.1039/c8ta11637g
DO - 10.1039/c8ta11637g
M3 - Journal article
AN - SCOPUS:85060783873
SN - 2050-7488
VL - 7
SP - 2268
EP - 2274
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 5
ER -
