Understanding charge transfer in carbon nanotube-fullerene bulk heterojunctions

Maogang Gong, Tejas A. Shastry, Qiannan Cui, Ryan R. Kohlmeyer, Kyle A. Luck, Andrew Rowberg, Tobin J. Marks, Michael F. Durstock, Hui Zhao, Mark C. Hersam, Shenqiang Ren

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Semiconducting single-walled carbon nanotube/fullerene bulk heterojunctions exhibit unique optoelectronic properties highly suitable for flexible, efficient, and robust photovoltaics and photodetectors. We investigate charge-transfer dynamics in inverted devices featuring a polyethylenimine-coated ZnO nanowire array infiltrated with these blends and find that trap-assisted recombination dominates transport within the blend and at the active layer/nanowire interface. We find that electrode modifiers suppress this recombination, leading to high performance.

Original languageEnglish
Pages (from-to)7428-7435
Number of pages8
JournalACS Applied Materials and Interfaces
Volume7
Issue number13
DOIs
Publication statusPublished - Apr 8 2015

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Keywords

  • bulk heterojunction
  • charge transfer
  • fullerenes
  • mechanism
  • nanocarbon

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Gong, M., Shastry, T. A., Cui, Q., Kohlmeyer, R. R., Luck, K. A., Rowberg, A., Marks, T. J., Durstock, M. F., Zhao, H., Hersam, M. C., & Ren, S. (2015). Understanding charge transfer in carbon nanotube-fullerene bulk heterojunctions. ACS Applied Materials and Interfaces, 7(13), 7428-7435. https://doi.org/10.1021/acsami.5b01536