Type

Journal Article

Authors

Colm O'Dwyer
M. Aguilo
F. Diaz
D. Drouin
A. Giguere
Peter J. Parbrook
Vitaly Z. Zubialevich
J. J. Carvajal
Hugh Geaney
O. V. Bilousov

Subjects

Physics

Topics
particles vacancies epitaxy yellow luminescence mg doped gan chemical vapor deposition gold nanowires iii v semiconductors gallium nitride doping films magnesium photoluminescence

Fabrication of p-type porous GaN on silicon and epitaxial GaN (2013)

Abstract Porous GaN layers are grown on silicon from gold or platinum catalyst seed layers, and self-catalyzed on epitaxial GaN films on sapphire. Using a Mg-based precursor, we demonstrate p-type doping of the porous GaN. Electrical measurements for p-type GaN on Si show Ohmic and Schottky behavior from gold and platinum seeded GaN, respectively. Ohmicity is attributed to the formation of a Ga2Au intermetallic. Porous p-type GaN was also achieved on epitaxial n-GaN on sapphire, and transport measurements confirm a p-n junction commensurate with a doping density of similar to 10(18) cm(-3). Photoluminescence and cathodoluminescence confirm emission from Mg-acceptors in porous p-type GaN. (C) 2013 AIP Publishing LLC.
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Full list of authors on original publication

Colm O'Dwyer, M. Aguilo, F. Diaz, D. Drouin, A. Giguere, Peter J. Parbrook, Vitaly Z. Zubialevich, J. J. Carvajal, Hugh Geaney, O. V. Bilousov

Experts in our system

1
Colm O'Dwyer
University College Cork
Total Publications: 121
 
2
Peter J. Parbrook
University College Cork
Total Publications: 23
 
3
Vitaly Z. Zubialevich
University College Cork
Total Publications: 12
 
4
Hugh Geaney
University College Cork
Total Publications: 33