The crucial role of intermolecular π-π Interactions in A-D-A-type electron acceptors and their effective modulation

Bowei Gao, Huifeng Yao, Bomee Jang, Jie Zhu, Runnan Yu, Yong Cui, Fenghao Wang, Junxian Hou, Han Young Woo, Jianhui Hou

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Here, the crucial role of intermolecular π-π 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 π-π 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%.

Original languageEnglish
Pages (from-to)2664-2670
Number of pages7
JournalJournal of Materials Chemistry A
Volume6
Issue number6
DOIs
Publication statusPublished - 2018 Jan 1

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Transport properties
Charge transfer
Modulation
Crystalline materials
Molecules
Electrons

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

The crucial role of intermolecular π-π Interactions in A-D-A-type electron acceptors and their effective modulation. / Gao, Bowei; Yao, Huifeng; Jang, Bomee; Zhu, Jie; Yu, Runnan; Cui, Yong; Wang, Fenghao; Hou, Junxian; Woo, Han Young; Hou, Jianhui.

In: Journal of Materials Chemistry A, Vol. 6, No. 6, 01.01.2018, p. 2664-2670.

Research output: Contribution to journalArticle

Gao, Bowei ; Yao, Huifeng ; Jang, Bomee ; Zhu, Jie ; Yu, Runnan ; Cui, Yong ; Wang, Fenghao ; Hou, Junxian ; Woo, Han Young ; Hou, Jianhui. / The crucial role of intermolecular π-π Interactions in A-D-A-type electron acceptors and their effective modulation. In: Journal of Materials Chemistry A. 2018 ; Vol. 6, No. 6. pp. 2664-2670.
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AU - Cui, Yong

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