TY - JOUR
T1 - Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage
AU - Yao, Huifeng
AU - Ye, Long
AU - Hou, Junxian
AU - Jang, Bomee
AU - Han, Guangchao
AU - Cui, Yong
AU - Su, Gregory M.
AU - Wang, Cheng
AU - Gao, Bowei
AU - Yu, Runnan
AU - Zhang, Hao
AU - Yi, Yuanping
AU - Woo, Han Young
AU - Ade, Harald
AU - Hou, Jianhui
N1 - 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).
PY - 2017/6/6
Y1 - 2017/6/6
N2 - 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.
AB - 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.
KW - end-group modification
KW - intermolecular π–π stacking
KW - molecular energy levels
KW - nonfullerene acceptors
KW - organic solar cells
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U2 - 10.1002/adma.201700254
DO - 10.1002/adma.201700254
M3 - Article
C2 - 28370383
AN - SCOPUS:85016824110
VL - 29
JO - Advanced Materials
JF - Advanced Materials
SN - 0935-9648
IS - 21
M1 - 1700254
ER -