Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage

Huifeng Yao, Long Ye, Junxian Hou, Bomee Jang, Guangchao Han, Yong Cui, Gregory M. Su, Cheng Wang, Bowei Gao, Runnan Yu, Hao Zhang, Yuanping Yi, Han Young Woo, Harald Ade, Jianhui Hou

Research output: Contribution to journalArticle

237 Citations (Scopus)

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.

Original languageEnglish
Article number1700254
JournalAdvanced Materials
Volume29
Issue number21
DOIs
Publication statusPublished - 2017 Jun 6

Keywords

  • end-group modification
  • intermolecular π–π stacking
  • molecular energy levels
  • nonfullerene acceptors
  • organic solar cells

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Yao, H., Ye, L., Hou, J., Jang, B., Han, G., Cui, Y., Su, G. M., Wang, C., Gao, B., Yu, R., Zhang, H., Yi, Y., Woo, H. Y., Ade, H., & Hou, J. (2017). Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open-Circuit Voltage. Advanced Materials, 29(21), [1700254]. https://doi.org/10.1002/adma.201700254