TY - JOUR
T1 - Structure Evolution of Oligomer Fused-Ring Electron Acceptors toward High Efficiency of As-Cast Polymer Solar Cells
AU - Lin, Yuze
AU - Li, Tengfei
AU - Zhao, Fuwen
AU - Han, Lei
AU - Wang, Zaiyu
AU - Wu, Yang
AU - He, Qiao
AU - Wang, Jiayu
AU - Huo, Lijun
AU - Sun, Yanming
AU - Wang, Chunru
AU - Ma, Wei
AU - Zhan, Xiaowei
N1 - Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2016/9/21
Y1 - 2016/9/21
N2 - The structure evolution of oligomer fused-ring electron acceptors (FREAs) toward high efficiency of as-cast polymer solar cells (PSCs) is reported. First, a series of FREAs (IC-(1-3)IDT-IC) based on indacenodithiophene (IDT) oligomers as cores are designed and synthesized, effects of IDT number (1–3) on their basic optical and electronic properties are investigated, and more importantly, the relationship between device performance of as-cast PSCs and donor(D)/acceptor(A) matching (absorption, energy level, morphology, and charge transport) of IC-(1-3)IDT-IC acceptors and two representative polymer donors, PTB7-Th and PDBT-T1 is surveyed. Then, the most promising D/A system (PDBT-T1/IC-1IDT-IC) with the best D/A harmony among the six D/A combinations, which yields a power conversion efficiency (PCE) of 7.39%, is found. Finally, changing the side-chains in IC-1IDT-IC from alkylphenyl to alkyl enhances the PCE from 7.39% to 9.20%.
AB - The structure evolution of oligomer fused-ring electron acceptors (FREAs) toward high efficiency of as-cast polymer solar cells (PSCs) is reported. First, a series of FREAs (IC-(1-3)IDT-IC) based on indacenodithiophene (IDT) oligomers as cores are designed and synthesized, effects of IDT number (1–3) on their basic optical and electronic properties are investigated, and more importantly, the relationship between device performance of as-cast PSCs and donor(D)/acceptor(A) matching (absorption, energy level, morphology, and charge transport) of IC-(1-3)IDT-IC acceptors and two representative polymer donors, PTB7-Th and PDBT-T1 is surveyed. Then, the most promising D/A system (PDBT-T1/IC-1IDT-IC) with the best D/A harmony among the six D/A combinations, which yields a power conversion efficiency (PCE) of 7.39%, is found. Finally, changing the side-chains in IC-1IDT-IC from alkylphenyl to alkyl enhances the PCE from 7.39% to 9.20%.
KW - donor/acceptor harmony
KW - fullerene free
KW - fused-ring electron acceptors
KW - nonfullerene acceptors
KW - polymer solar cells
UR - https://www.scopus.com/pages/publications/84978134319
U2 - 10.1002/aenm.201600854
DO - 10.1002/aenm.201600854
M3 - 文章
AN - SCOPUS:84978134319
SN - 1614-6832
VL - 6
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 18
M1 - 1600854
ER -
可持续发展目标 7 经济适用的清洁能源