Abstract
The charge-carrier transport mechanism in the organic semiconductor pentacene is explored using thin-film transistor structures. The variation of the field-effect mobility with temperature differs from sample to sample, ranging from thermally activated to temperature-independent behavior. This result excludes thermally activated hopping as the fundamental transport mechanism in pentacene thin films, and suggests that traps and/or contact effects may strongly influence the observed characteristics. These results also indicate that field-effect transistors may not be appropriate vehicles for illuminating basic transport mechanisms in organic materials.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1854-1856 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 72 |
| Issue number | 15 |
| DOIs | |
| State | Published - Dec 1 1998 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
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Nelson, S. F., Lin, Y. Y., Gundlach, D. J., & Jackson, T. N. (1998). Temperature-independent transport in high-mobility pentacene transistors. Applied Physics Letters, 72(15), 1854-1856. https://doi.org/10.1063/1.121205