Switch-on voltage in disordered organic field-effect transistors
- 13 May 2002
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 80 (20), 3838-3840
- https://doi.org/10.1063/1.1479210
Abstract
The switch-on voltage for disordered organic field-effect transistors is defined as the flatband voltage, and is used as a characterization parameter. The transfer characteristics of the solution processed organic semiconductors pentacene, poly(2,5-thienylene vinylene) and poly(3-hexyl thiophene) are modeled as a function of temperature and gate voltage with a hopping model in an exponential density of states. The data can be described with reasonable values for the switch-on voltage, which is independent of temperature. This result also demonstrates that the large threshold voltage shifts as a function of temperature reported in the literature constitute a fit parameter without a clear physical basis.Keywords
This publication has 18 references indexed in Scilit:
- Trapping in organic field-effect transistorsJournal of Applied Physics, 2001
- On the intrinsic limits of pentacene field-effect transistorsOrganic Electronics, 2000
- High-performance all-polymer integrated circuitsApplied Physics Letters, 2000
- Ambipolar Pentacene Field-Effect Transistors and InvertersScience, 2000
- Two-dimensional charge transport in self-organized, high-mobility conjugated polymersNature, 1999
- Low-cost all-polymer integrated circuitsApplied Physics Letters, 1998
- Theory of the field-effect mobility in amorphous organic transistorsPhysical Review B, 1998
- Temperature-independent transport in high-mobility pentacene transistorsApplied Physics Letters, 1998
- Field-effect transistors made from solution-processed organic semiconductorsSynthetic Metals, 1997
- Temperature Dependence of the Field-Effect Mobility of Sexithiophene. Determination of the Density of TrapsJournal de Physique III, 1995