Enhancing light absorption and carrier transport of P3HT by doping multi-wall carbon nanotubes

Ming Chung Wu, Yun Yue Lin, Sharon Chen, Hsueh Chung Liao, Yi Jen Wu, Chun Wei Chen, Yang Fang Chen, Wei Fang Su*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

99 Scopus citations

Abstract

We have investigated the enhancement of light absorption and carrier transport of poly(3-hexylthiophene) (P3HT) resulted from doping with multi-wall carbon nanotubes (MWNTs). The MWNTs were acid washed first, and then incorporated into P3HT homogenously. The MWNTs make P3HT unfolded with more alignment and thus increase light absorption as shown by the studies of AFM and UV-vis spectroscopy. The KFM data provides useful information to differentiate the work function of the MWNTs from P3HT and further show improved hole transporting behaviors. Based upon these results, the 0.01 wt% MWNTs doped P3HT/PCBM photovoltaic device shows an increase of 29% power conversion efficiency.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalChemical Physics Letters
Volume468
Issue number1-3
DOIs
StatePublished - 13 01 2009
Externally publishedYes

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