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High Mobilities in Organic Molecular Crystals

Published online by Cambridge University Press:  21 March 2011

Jan Hendrik Schön ,
Steffen Berg ,
Christian Kloc  and
Bertram Batlogg
Jan Hendrik Schön
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Steffen Berg
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Christian Kloc
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
Bertram Batlogg
Affiliation:
Bell Laboratories, Lucent Technologies, 600 Mountain Ave., Murray Hill, NJ 07974
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Abstract

The charge transport in high quality single crystals of various organic molecular semiconductors is investigated. Band-like motion in delocalized states is observed in various polyacene and oligothiophene single crystals. The electric field dependence of the mobility is ascribed to acoustic phonon scattering. Furthermore, hot carrier effects can be observed at low temperatures and high electric fields. Band-like transport changes over to hopping motion when the effective bandwidth shrinks, i.e. at high temperatures or in crystallographic directions of small molecular orbital overlap.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB9.5
Copyright
Copyright © Materials Research Society 1999

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