Controlled doping of carbon nanotubes with metallocenes for application in hybrid carbon nanotube/Si solar cells

Xiaokai Li, Louise M. Guard, Jie Jiang, Kelsey Sakimoto, Jing Shun Huang, Jianguo Wu, Jinyang Li, Lianqing Yu, Ravi Pokhrel, Gary W. Brudvig, Sohrab Ismail-Beigi, Nilay Hazari, André D. Taylor

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

There is considerable interest in the controlled p-type and n-type doping of carbon nanotubes (CNT) for use in a range of important electronics applications, including the development of hybrid CNT/silicon (Si) photovoltaic devices. Here, we demonstrate that easy to handle metallocenes and related complexes can be used to both p-type and n-type dope single-walled carbon nanotube (SWNT) thin films, using a simple spin coating process. We report n-SWNT/p-Si photovoltaic devices that are >450 times more efficient than the best solar cells of this type currently reported and show that the performance of both our n-SWNT/p-Si and p-SWNT/n-Si devices is related to the doping level of the SWNT. Furthermore, we establish that the electronic structure of the metallocene or related molecule can be correlated to the doping level of the SWNT, which may provide the foundation for controlled doping of SWNT thin films in the future.

Original languageEnglish
Pages (from-to)3388-3394
Number of pages7
JournalNano letters
Volume14
Issue number6
DOIs
Publication statusPublished - Jun 11 2014

Keywords

  • Metallocenes
  • carbon nanotubes
  • density functional theory
  • doping
  • photovoltaic devices

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Li, X., Guard, L. M., Jiang, J., Sakimoto, K., Huang, J. S., Wu, J., Li, J., Yu, L., Pokhrel, R., Brudvig, G. W., Ismail-Beigi, S., Hazari, N., & Taylor, A. D. (2014). Controlled doping of carbon nanotubes with metallocenes for application in hybrid carbon nanotube/Si solar cells. Nano letters, 14(6), 3388-3394. https://doi.org/10.1021/nl500894h