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Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage
- Authors
- Yao, Huifeng; Ye, Long; Hou, Junxian; Jang, Bomee; Han, Guangchao; Cui, Yong; Su, Gregory M.; Wang, Cheng; Gao, Bowei; Yu, Runnan; Zhang, Hao; Yi, Yuanping; Woo, Han Young; Ade, Harald; Hou, Jianhui
- Issue Date
- 6-6월-2017
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- end-group modification; intermolecular π–π stacking; molecular energy levels; nonfullerene acceptors; organic solar cells
- Citation
- ADVANCED MATERIALS, v.29, no.21
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS
- Volume
- 29
- Number
- 21
- ISSN
- 0935-9648
- 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.
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