Origin of Electric Field Dependence of the Charge Mobility and Spatial Energy Correlations in C60-Based Field Effect Transistors

We report on the influence of the lateral electric field on the charge mobility in organic field-effect transistors (OFET) based on C 60 films with multigrain morphology. The experimental data were quantitatively described using a recent analytical model by accounting for the strong local electric f...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2014-01, Vol.589 (1), p.18-28
Main Authors: Fishchuk, I. I., Kadashchuk, A., Novikov, S. V., Ullah, Mujeeb, Genoe, J., Sariciftci, N. S., Sitter, H., Bässler, H.
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Charge
Correlation analysis
Disorders
Electric fields
Field effect transistors
Fullerenes
Morphology
Semiconductor devices
Semiconductors
Transistors
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Summary:We report on the influence of the lateral electric field on the charge mobility in organic field-effect transistors (OFET) based on C 60 films with multigrain morphology. The experimental data were quantitatively described using a recent analytical model by accounting for the strong local electric fields in a multigrain transistor channel and for the energy correlation effects. To rationalize the presence of a correlated disorder in a non-polar C 60 material, we show that randomly oriented permanent dipoles in organic gate dielectric layers can generate a significant dipolar disorder in an adjacent nonpolar semiconductor layer.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2013.871859