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Title: Influence of the contact metal on the performance of n-type carbonyl-functionalized quaterthiophene organic thin-film transistors
Authors: Schols, Sarah ×
Van Willigenburg, L
Mueller, R
Bode, Dieter
Debucquoy, Maarten
De Jonge, Stijn
Genoe, Jan
Heremans, Paul
Luyten, S
Facchetti, A #
Issue Date: Dec-2008
Publisher: Amer inst physics
Series Title: Applied physics letters vol:93 issue:26
Article number: 263303
Abstract: Organic thin-film transistors using 5, 5(')-diperfluorohexylcarbonyl-2,2('):5('),2('):5('),2(')-quaterthiophene (DFHCO-4T) as the electron conducting organic semiconductor are fabricated and the performance of these transistors with different top-contact metals is investigated. Transistors with Au source-drain top contacts attain an apparent saturation mobility of 4.6 cm(2)/V s, whereas this parameter is 100 times lower for similar transistors with Al/LiF top contacts. We explain this lower performance by the formation of a thin interfacial layer with poor charge injection properties resulting from a redox reaction between Al and DFHCO-4T.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Associated Section of ESAT - INSYS, Integrated Systems
Electrical Engineering (ESAT) TC, Technology Campus Diepenbeek
Technologiecluster ESAT Elektrotechnische Engineering
Materials Technology TC, Campus Group T Leuven
Technologiecluster Materialentechnologie
× corresponding author
# (joint) last author

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