In:
Journal of Applied Physics, AIP Publishing, Vol. 101, No. 5 ( 2007-03-01)
Abstract:
This article reports the experimental study of the electric-field-dependent charge transport mechanisms in polycrystalline organic thin-film field-effect transistors. This work represents the quantitative measurement of the temperature and electric-field dependences of the mobility in organic thin-film transistors with scaled device geometry when carrier densities are at levels of practical importance. The true behavior of field-dependent mobility was extracted by minimizing contact effects consistently over a range of channel lengths. In these partially ordered systems, experimental data suggest that thermally activated and field-assisted hopping transport between disorder-induced localized states dominates over intrinsic polaronic transport seen in organic single crystals. The experimental results were found to exhibit a Frenkel-Poole-type dependence consistently over a wide range of channel lengths, fields, and temperatures.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2007
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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