Analysis of the interactions between pentacene film and air molecules by means of Raman spectroscopy

F. De Angelis*, Gobind Das, Enzo Di Fabrizio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We report on the interactions between spin-coated pentacene films and molecules present in air (nitrogen, oxygen, and moisture) studied by means of micro-Raman spectroscopy. We found that while oxygen does not interact with pentacene, water molecules diffuse in the film proportionally to the relative humidity of the ambient, giving rise to an interaction that affects pentacene's optical properties. These findings are fully reversible when dry ambient is restored, and they could be ascribed to the formation of a reversible water-pentacene complex theoretically calculated. This interaction affects a specific pentacene vibration mode that could lead to reversible formation of electron traps involved in the degradation of the electrical performance of pentacene.

Original languageEnglish (US)
Pages (from-to)234-237
Number of pages4
JournalChemical Physics Letters
Volume462
Issue number4-6
DOIs
StatePublished - Sep 10 2008

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Analysis of the interactions between pentacene film and air molecules by means of Raman spectroscopy'. Together they form a unique fingerprint.

Cite this