Fabrication by vaporized film deposition and in situ FET measurements of polycrystalline thiophene/phenylene co-oligomer films
Abstract
Herein, we present a vapor film deposition method for fabricating polycrystalline films of a thiophene/phenylene co-oligomer. The polycrystalline film has comparable physical and optical characteristics, e.g. an amplified spontaneous emission, to those of the single-crystal phase as the film consists of tiny single crystals with a grain size of 5-20 μm. Meanwhile, in situ FET results illustrate the dominant unipolar p-type characteristics with a hole mobility of 0.025 cm2 V-1 s-1, higher than the conventional physically deposited films owing to the standing molecular orientation.
- Publication:
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Japanese Journal of Applied Physics
- Pub Date:
- March 2020
- DOI:
- 10.7567/1347-4065/ab53c9
- Bibcode:
- 2020JaJAP..59DDA17P