PHONONS IN POLYACENIC CHAINS

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PHONONS IN POLYACENIC CHAINS

Updated：2021-06-21

- PHONONS IN POLYACENIC CHAINS
- Issue 3, Pages: 229-236(2006)
- Affiliations：
  
  1.   Laboratoire de Physique et Chimie Quantique
  2.   Laboratoire de Physique de l’Etat Condensé Faculté des Sciences
  3.   Universite Tizi-Ouzou
  4.   BP RP17
  5.    Tizi-Ouzou  ,15000
  6.   Algeria
  7.   UMR CNRS 06087
  8.   Universite du Maine
  9.    Le Mans Cedex 9  ,72085
  10.   France
- Author bio：
- Funds：
- DOI：
  CLC： O631.3
- Published：2006
- Accepted：
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[1]O.Rafil,M.Tamine,B.Bourahla,R.Tigrine,S.Amoudache,A.Khater.PHONONS IN POLYACENIC CHAINS[J].Chinese Journal of Polymer Science,2006(03):229-236.

PHONONS IN POLYACENIC CHAINS[J]. 2006, (3): 229-236.
[1]O.Rafil,M.Tamine,B.Bourahla,R.Tigrine,S.Amoudache,A.Khater.PHONONS IN POLYACENIC CHAINS[J].Chinese Journal of Polymer Science,2006(03):229-236. DOI：

PHONONS IN POLYACENIC CHAINS[J]. 2006, (3): 229-236. DOI：

摘要

<正>We have theoretically resolved phonon excitations in quasi-two-dimensional organic crystals of polyacenic semiconductor material which may be obtained by the pyrolytic treatment of phenol-formaldehyde resin. A model for studying the dynamical properties using three polyacene chains is proposed with the aim to present the vibrational properties of this structure. It employs the formalism of solid states in two dimensions which admit phonons. A simulation process of the two-dimensional lattice structure shows that elastic waves may explain the existence of vibrational modes in the frequency range 100-400 cm-1. The presence of acoustic and optical like phonons is discussed in terms of the elastic force constants. A hyperfine resonance structure is obtained. It allows the analysis of the dynamical evolution in thin films of polyacene. It is found that the behavior of the phonon density of states exhibits resonance between modes in the structure.

Abstract

We have theoretically resolved phonon excitations in quasi-two-dimensional organic crystals of polyacenic semiconductor material which may be obtained by the pyrolytic treatment of phenol-formaldehyde resin. A model for studying the dynamical properties using three polyacene chains is proposed with the aim to present the vibrational properties of this structure. It employs the formalism of solid states in two dimensions which admit phonons. A simulation process of the two-dimensional lattice structure shows that elastic waves may explain the existence of vibrational modes in the frequency range 100-400 cm-1. The presence of acoustic and optical like phonons is discussed in terms of the elastic force constants. A hyperfine resonance structure is obtained. It allows the analysis of the dynamical evolution in thin films of polyacene. It is found that the behavior of the phonon density of states exhibits resonance between modes in the structure.

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