Polarized micro-Raman spectroscopy study of pentacene thin films

Ingrid Stenger; Alexandre Frigout; Denis Tondelier; Bernard Geffroy; Razvigor Ossikovski; Yvan Bonnassieux

doi:10.1063/1.3106053

Polarized micro-Raman spectroscopy study of pentacene thin films

Ingrid Stenger
, Alexandre Frigout
, Denis Tondelier
, Bernard Geffroy
, Razvigor Ossikovski
, Yvan Bonnassieux

Institut polytechnique de Paris

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We report on polarized micro-Raman spectroscopy study of two pentacene thin films exhibiting different microstructures: a well-ordered sample and a more disordered one. We have investigated the frequency range of the intramolecular C-H bending modes in the plane of the pentacene molecule and proposed an interpretation of the Raman spectra. The use of symmetry properties of the two intramolecular (uncoupled) modes allowed us to unambiguously identify it among the five main contributions observed in this spectral range. The three other modes were assumed to be resulting from molecular coupling effect owing to their different behavior upon the samples microstructure.

Original language	English
Article number	133301
Journal	Applied Physics Letters
Volume	94
Issue number	13
DOIs	https://doi.org/10.1063/1.3106053
Publication status	Published - 15 Apr 2009

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AU - Bonnassieux, Yvan

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N2 - We report on polarized micro-Raman spectroscopy study of two pentacene thin films exhibiting different microstructures: a well-ordered sample and a more disordered one. We have investigated the frequency range of the intramolecular C-H bending modes in the plane of the pentacene molecule and proposed an interpretation of the Raman spectra. The use of symmetry properties of the two intramolecular (uncoupled) modes allowed us to unambiguously identify it among the five main contributions observed in this spectral range. The three other modes were assumed to be resulting from molecular coupling effect owing to their different behavior upon the samples microstructure.

AB - We report on polarized micro-Raman spectroscopy study of two pentacene thin films exhibiting different microstructures: a well-ordered sample and a more disordered one. We have investigated the frequency range of the intramolecular C-H bending modes in the plane of the pentacene molecule and proposed an interpretation of the Raman spectra. The use of symmetry properties of the two intramolecular (uncoupled) modes allowed us to unambiguously identify it among the five main contributions observed in this spectral range. The three other modes were assumed to be resulting from molecular coupling effect owing to their different behavior upon the samples microstructure.

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JO - Applied Physics Letters

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Polarized micro-Raman spectroscopy study of pentacene thin films

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