Photo-switching effect in stilbene organic field effect transistors
In this paper, we have investigated experimentally the photo-response of the organic field effect transistors (OFETs) based on π-conjugated stilbene oligomers with mutual optical and electrical properties. The cis-trans photoisomerization of these oligomers in the active layer of the OFETs disturbs...
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Veröffentlicht in: | Journal of applied physics 2014-03, Vol.115 (9) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this paper, we have investigated experimentally the photo-response of the organic field effect transistors (OFETs) based on π-conjugated stilbene oligomers with mutual optical and electrical properties. The cis-trans photoisomerization of these oligomers in the active layer of the OFETs disturbs the intermolecular interactions. This perturbation disrupts the charge transport in the conduction channel and turns-off the transistor. We used this phenomenon to modulate the drain current of the OFETs optically. The photo-response activity of the transistors is temperature dependent, in agreement with the isomerization of the stilbenes. Photoluminescent evaluations verify the isomerization of the oligomers in the thin film. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.4864019 |