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The crucial role of intermolecular pi-pi interactions in A-D-A-type electron acceptors and their effective modulation
- Authors
- Gao, Bowei; Yao, Huifeng; Jang, Bomee; Zhu, Jie; Yu, Runnan; Cui, Yong; Wang, Fenghao; Hou, Junxian; Woo, Han Young; Hou, Jianhui
- Issue Date
- 14-2월-2018
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.6, pp.2664 - 2670
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 6
- Number
- 6
- Start Page
- 2664
- End Page
- 2670
- ISSN
- 2050-7488
- Abstract
- Here, the crucial role of intermolecular pi-pi interactions in A-D-A-type acceptors is examined and a simple yet effective modulation method is presented. By side chain manipulation, two small molecule acceptors, IDT-C6 and IDT-PhC6, are designed and synthesized with different crystalline morphologies. Since n-hexyl side chains have less steric hindrance than hexylphenyl side chains, IDT-C6 exhibits enhanced intermolecular pi-pi interactions relative to IDT-PhC6. Benefiting from the improved charge transport properties of the IDT-C6-based device, a high PCE of 12.5% is recorded, whereas those of the IDT-PhC6-based device delivers a moderate PCE of just 5.6%.
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Collections - College of Science > Department of Chemistry > 1. Journal Articles
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