Strong and Stable Doping of Carbon Nanotubes and Graphene by MoO x for Transparent Electrodes

Sondra L. Hellstrom, Michael Vosgueritchian, Randall M. Stoltenberg, Irfan Irfan, Mallory Hammock, Yinchao Bril Wang, Chuancheng Jia, Xuefeng Guo, Yongli Gao, Zhenan Bao

Research output: Contribution to journalArticlepeer-review

121 Scopus citations

Abstract

MoO x has been used for organic semiconductor doping, but it had been considered an inefficient and/or unstable dopant. We report that MoO x can strongly and stably dope carbon nanotubes and graphene. Thermally annealed MoO x-CNT composites can form durable thin film electrodes with sheet resistances of 100 ω/sq at 85% transmittance plain and 85 ω/sq at 83% transmittance with a PEDOT:PSS adlayer. Sheet resistances change less than 10% over 20 days in ambient and less than 2% with overnight heating to 300 °C in air. The MoO x can be easily deposited either by thermal evaporation or from solution-based precursors. Excellent stability coupled with high conductivity makes MoO x-CNT composites extremely attractive candidates for practical transparent electrodes. © 2012 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)3574-3580
Number of pages7
JournalNano Letters
Volume12
Issue number7
DOIs
StatePublished - Jun 13 2012
Externally publishedYes

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