@article{457852eba67c494cbff319b700b689e4,
title = "Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage",
abstract = "A new acceptor–donor–acceptor-structured nonfullerene acceptor ITCC (3,9-bis(4-(1,1-dicyanomethylene)-3-methylene-2-oxo-cyclopenta[b]thiophen)-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d′:2,3-d′]-s-indaceno[1,2-b:5,6-b′]-dithiophene) is designed and synthesized via simple end-group modification. ITCC shows improved electron-transport properties and a high-lying lowest unoccupied molecular orbital level. A power conversion efficiency of 11.4% with an impressive V OC of over 1 V is recorded in photovoltaic devices, suggesting that ITCC has great potential for applications in tandem organic solar cells.",
keywords = "end-group modification, intermolecular π–π stacking, molecular energy levels, nonfullerene acceptors, organic solar cells",
author = "Huifeng Yao and Long Ye and Junxian Hou and Bomee Jang and Guangchao Han and Yong Cui and Su, {Gregory M.} and Cheng Wang and Bowei Gao and Runnan Yu and Hao Zhang and Yuanping Yi and Woo, {Han Young} and Harald Ade and Jianhui Hou",
note = "Funding Information: Ji.H. acknowledges the financial support from the Ministry of Science and Technology of China (2014CB643501), NSFC (21325419, 91333204, 51373181), the Chinese Academy of Science (XDB12030200, KJZD-EW-J01), the CAS-Croucher Funding Scheme for Joint Labs (CAS14601). NEXAFS and R-SoXS data analyses by L.Y. and H.A. were supported by the ONR grant N00141512322. X-ray data were acquired at beamlines 11.0.1.2, and 5.3.2.2 at the Advanced Light Source, which was 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. A. L. D. Kilcoyne, Y. Yu, and A. Young of the ALS (LBNL) provided instrument maintenance. H.Y.W. acknowledges the financial support from National Research Foundation (NRF) of Korea (2012M3A6A7055540). Y.Y. acknowledges the financial support from the Chinese Academy of Science (XDB12020200). Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2017",
month = jun,
day = "6",
doi = "10.1002/adma.201700254",
language = "English",
volume = "29",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "21",
}