From ambi- to unipolar behavior in discotic dye field-effect transistors.
basic_science · Level V
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- Record sourced from PubMed, PMID 25213895.
- Also identified by DOI 10.1002/adma.200702992.
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Abstract
Ambipolar, solution-processed thin-film transistors based on a discotic dye turn into unipolar behavior after thermal annealing. No evidence for temperature-induced change in injection barrier or interface trapping can be found to explain this phenomenon. Instead, a variation in morphology is considered as the cause for the observed transition from ambipolar to unipolar charge transport.