Raman and infrared spectroscopy of organic electronic devices

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present Raman and infrared studies on the structures of organic semiconductor thin films used for electronic devices. The Raman spectra of crystalline and amorphous states of an organic semiconductor, N,N′-di-1-naphthaleyl-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine (NPD), were measured. These states give rise to slightly different peak positions and widths of each Raman band. Raman images were observed for polycrystalline pentacene films evaporated on a silicon substrate. The structural defects were found in the images of the intensity ratio I 1596/I1533, which reflects the orientation of molecules i.e., crystalline domains. Photoinduced infrared absorption from the composite of regioregular poly(3-dodecylthiphene) and C60 was measured by the difference FT-IR method. The observed absorption is attributable to photogenerated carriers. The action spectra of photoinduced infrared absorption are explained by electron transfer from photogenerated excited states on a polymer chain to C60.

Original languageEnglish
Title of host publicationICONO 2010
Subtitle of host publicationInternational Conference on Coherent and Nonlinear Optics
DOIs
Publication statusPublished - 2011 Feb 21
EventICONO 2010: International Conference on Coherent and Nonlinear Optics - Kazan, Russian Federation
Duration: 2010 Aug 232010 Aug 26

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7993
ISSN (Print)0277-786X

Conference

ConferenceICONO 2010: International Conference on Coherent and Nonlinear Optics
CountryRussian Federation
CityKazan
Period10/8/2310/8/26

Keywords

  • Infrared
  • Organic light-emitting diode
  • Organic solar cell
  • Organic thin-film transistor
  • Raman

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Furukawa, Y. (2011). Raman and infrared spectroscopy of organic electronic devices. In ICONO 2010: International Conference on Coherent and Nonlinear Optics [799320] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7993). https://doi.org/10.1117/12.880237