Absorption spectra modification in poly(3-hexylthiophene):methanofullerene blend thin films

Vishal Shrotriya, Jianyong Ouyang, Ricky J. Tseng, Gang Li, Yang Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

279 Citations (Scopus)

Abstract

The absorption spectra and the photovoltaic effect in thin films consisting of a blend of p-type poly(3-hexylthiophene) and n-type acceptor [6,6]-phenyl C60 butyric acid methyl ester have been studied and a decrease in inter-band absorption in the wavelength range of 450-600 nm is observed. This absorption quenching is attributed to the disordering of the poly(3-hexylthiophene) chains and a charge transfer between poly(3-hexylthiophene) and [6,6]-phenyl C60 butyric acid methyl ester, as evidenced by FTIR and X-ray photoelectron spectra. Finally, photovoltaic cells were fabricated utilizing the blend as the active layer and the device characteristics were studied.
Original languageEnglish
Pages (from-to)138-143
Number of pages6
JournalChemical Physics Letters
Volume411
Issue number1-3
DOIs
Publication statusPublished - 5 Aug 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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