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Ambipolar Transport in Organic Conjugated Materials
Author(s) -
Cornil J.,
Brédas J.L.,
Zaumseil J.,
Sirringhaus H.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200602922
Subject(s) - ambipolar diffusion , conjugated system , materials science , organic semiconductor , electron transport chain , organic electronics , nanotechnology , electron , transistor , electron mobility , semiconductor , field effect transistor , electronics , chemical physics , optoelectronics , polymer , physics , chemistry , quantum mechanics , biochemistry , voltage , composite material
Abstract The relative mobility of holes versus electrons in π‐conjugated materials is a long‐standing issue in the field of organic electronics. In this Progress Report, we first argue on the basis of theoretical considerations that in general organic semiconductors are intrinsically as good electron transporters as they are hole transporters. Then, in the light of selected experimental works, we discuss the origin of the features that prevent the observation of intrinsic electron transport, and the strategies that have been developed to promote ambipolar transport in field‐effect transistors.