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Title: Ambipolar injection in a submicron-channel light-emitting tetracene transistor with distinct source and drain contacts
Authors: Reynaert, J
Cheyns, David
Janssen, Dimitri
Muller, R
Arkhipov, VI
Genoe, Jan
Borghs, Gustaaf
Heremans, Paul #
Issue Date: Jun-2005
Publisher: Amer inst physics
Series Title: Journal of Applied Physics vol:97 issue:11
Article number: 114501
Abstract: We report on organic light-emitting transistors with a submicron-channel length, gold source, and calcium drain contacts. The respective contact metals allow efficient injection of holes and electrons in the tetracene channel material. Transistor characteristics were measured in parallel with electroluminescence being recorded by a digital camera focused on the transistor channel. In the case of submicron-channel lengths, the transistor source-drain current at higher gate voltages was determined by the source-drain voltage. At larger channel lengths, the source-drain current was limited by the injection of electrons from the calcium contact, as hole ejection to this contact was fully blocked. The hole blocking is explained in terms of a chemical reaction occurring at the Ca/tetracene interface. (C) 2005 American Institute of Physics.
ISSN: 0021-8979
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering - miscellaneous
Molecular Design and Synthesis
Physics and Astronomy - miscellaneous
ESAT - MICAS, Microelectronics and Sensors
Electrical Engineering (ESAT) TC, Technology Campus Diepenbeek
Technologiecluster ESAT Elektrotechnische Engineering
# (joint) last author

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