Ohmic Conacts to p-GaN on the Basis of Carbon Nanomaterials

Liday Jozef; Vogrinčič Peter; Vretenár Viliam; Kotlár Mário; Marton Marián; Mikolášek Miroslav; Řeháček Vlastimil

doi:10.2478/jee-2014-0063

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Ohmic Conacts to p-GaN on the Basis of Carbon Nanomaterials

Journal of Electrical Engineering

Volume 65 (2014): Issue 6 (November 2014)

By: Liday Jozef, Vogrinčič Peter, Vretenár Viliam, Kotlár Mário, Marton Marián, Mikolášek Miroslav and Řeháček Vlastimil

Open Access

|Jan 2015

Abstract

We have designed and verified a new structure for ohmic contacts to p-GaN based on a layer of carbon nanotubes (CNT), reduced graphene oxide (r-GO) and metallic layers of Cr, Pd and Au, namely in configurations Au/Cr/r-GO/CNT/p-GaN and Au/Pd/r-GO/CNT/p-GaN. The effects have been studied of the annealing temperature and the gas ambient upon the electrical properties of the contacts. Annealing of the Au/Pd/r-GO/CNT/p-GaN structure in air at 500°C for 1 minute resulted in linear I - V curves measured between planar electrodes on the p-GaN. Hence, addition of r-GO to the CNT interlayer between p-GaN and the metallization layer is a highly promising procedure for further improvements of the ohmic contacts to p-GaN.

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Articles in this issue

DOI: https://doi.org/10.2478/jee-2014-0063 | Journal eISSN: 1339-309X | Journal ISSN: 1335-3632

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Language: English

Page range: 386 - 389

Submitted on: Mar 15, 2014

Published on: Jan 31, 2015

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Publication frequency: 6 issues per year

Keywords:

p-GaN,

ohmic contacts,

carbon nanotubes (CNT),

reduced graphene oxide (r-GO)

Related subjects:

Engineering,

Introductions and overviews,

Engineering, other

© 2015 Liday Jozef, Vogrinčič Peter, Vretenár Viliam, Kotlár Mário, Marton Marián, Mikolášek Miroslav, Řeháček Vlastimil, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 65 (2014): Issue 6 (November 2014)