Europhys. Lett.
Volume 66, Number 3, May 2004
Page(s) 392 - 398
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 01 April 2004
Europhys. Lett., 66 (3) , pp. 392-398 (2004)
DOI: 10.1209/epl/i2003-10218-8

The impact of molecular polarization on the electronic properties of molecular semiconductors

M. N. Bussac1, 2, J. D. Picon1 and L. Zuppiroli1

1  Laboratoire d'Optoélectronique des Matériaux Moléculaires, Institut des matériaux École Polytechnique Fédérale de Lausanne - 1015 Lausanne, Switzerland
2  Centre de Physique Théorique, École polytechnique - 91128 Palaiseau Cedex, France

(Received 21 October 2003; accepted in final form 26 February 2004)

In a molecular semiconductor, the carrier is dressed with a polarization cloud that we treat as a quantum field of Frenkel excitons coupled to it. The consequences of the existence of this electronic polaron on the dynamics of an extra charge in a material like pentacene can thus be evaluated.

72.80.Le - Polymers; organic compounds (including organic semiconductors).
71.23.An - Theories and models; localized states.
33.15.Kr - Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility.

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