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Anomalous current transients in organic field-effect transistors
Technical University of Eindhoven, Netherlands.
Technical University of Eindhoven, Netherlands; Philips Research Labs, Netherlands.
University of Bologna, Italy.
Linköping University, Department of Physics, Chemistry and Biology, Chemical and Optical Sensor Systems. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7104-7127
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2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 96, no 10, 103306Article in journal (Refereed) Published
Abstract [en]

Here we study the origin of the gate bias-stress effect in organic p-type transistors. Based on water-mediated exchange between holes in the semiconductor and protons in the gate dielectric, we predict anomalous current transients for a non-constant gate bias, while ensuring accumulation. When applying a strongly negative gate bias followed by a less negative bias a back-transfer of protons to holes and an increase of the current is expected. We verify this counterintuitive behavior experimentally and can quantitatively model the transients with the same parameters as used to describe the threshold voltage shift.

Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2010. Vol. 96, no 10, 103306
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-118175DOI: 10.1063/1.3339879ISI: 000275588000092OAI: diva2:813524

Funding Agencies|Dutch Technology Foundation STW; NWO; Ministry of Economic Affairs; EU [212311]

Available from: 2015-05-22 Created: 2015-05-22 Last updated: 2015-06-01

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Kemerink, Martijn
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Chemical and Optical Sensor SystemsThe Institute of Technology
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