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High mobility, low voltage operating C-60 based n-type organic field effect transistors
Date
2011-10-01
Author
Schwabegger, G.
Ullah, Mujeeb
Irimia-Vladu, M.
Baumgartner, M.
Kanbur, Y.
Ahmed, R.
Stadler, P.
Bauer, S.
Sariciftci, N. S.
Sitter, H.
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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We report on C-60 based organic field effect transistors (OFETs) that are well optimized for low voltage operation. By replacing commonly used dielectric layers by thin parylene films or by utilizing different organic materials like divinyltetramethyldisiloxane-bis(benzocyclo-butene)(BCB), low density polyethylene (PE) or adenine in combination with aluminum oxide (AlOx) to form a bilayer gate dielectric, it was possible to significantly increase the capacitance per unit area (up to two orders of magnitude). The assembly of metal-oxide and organic passivation layer combines the properties of the high dielectric constant of the metal oxide and the good organic-organic interface between semiconductor and insulator provided by a thin capping layer on top of the AlOx film. This results in OFETs that operate with voltages lower than 500 mV, while exhibiting field effect mobilities exceeding 3 cm(2) V-1 s(-1).
Subject Keywords
Mechanical Engineering
,
Materials Chemistry
,
Mechanics of Materials
,
Electronic, Optical and Magnetic Materials
,
Condensed Matter Physics
,
Metals and Alloys
URI
https://hdl.handle.net/11511/68530
Journal
SYNTHETIC METALS
DOI
https://doi.org/10.1016/j.synthmet.2011.06.042
Collections
Graduate School of Natural and Applied Sciences, Article