@article{4b2d0dcb1d7745fb94b5db548f423b7e,
title = "Asymmetrical Ladder-Type Donor-Induced Polar Small Molecule Acceptor to Promote Fill Factors Approaching 77% for High-Performance Nonfullerene Polymer Solar Cells",
abstract = "In this work, an effectual strategy of constructing polar small molecule acceptors (SMAs) to promote fill factor (FF) of nonfullerene polymer solar cells (PSCs) is first reported. Three asymmetrical SMAs of IDT6CN, IDT6CN-Th, and IDT6CN-M, which own large dipole moments, are designed and synthesized. The PSCs based on three polar SMAs exhibit apparently higher FFs compared with their symmetrical analogues. The asymmetrical design strategy accompanied with side chain and end group engineering makes IDT6CN-Th- and IDT6CN-M-based nonfullerene PSCs achieve high power conversion efficiency with FFs approaching 77%.",
keywords = "asymmetrical molecule, high fill factor, nonfullerene polymer solar cell, small molecule acceptor",
author = "Wei Gao and Miao Zhang and Tao Liu and Ruijie Ming and Qiaoshi An and Kailong Wu and Dongjun Xie and Zhenghui Luo and Cheng Zhong and Feng Liu and Fujun Zhang and He Yan and Chuluo Yang",
note = "Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2018",
month = jun,
day = "27",
doi = "10.1002/adma.201800052",
language = "English",
volume = "30",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "26",
}