Journal
ADVANCED MATERIALS
Volume 29, Issue 21, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201700254
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Funding
- Ministry of Science and Technology of China [2014CB643501]
- NSFC [21325419, 91333204, 51373181]
- Chinese Academy of Science [XDB12030200, KJZD-EW-J01, XDB12020200]
- CAS-Croucher Funding Scheme for Joint Labs [CAS14601]
- ONR [N00141512322]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- National Research Foundation (NRF) of Korea [2012M3A6A7055540]
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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.
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