Hostname: page-component-7b7567c8c-fvjsw Total loading time: 0 Render date: 2026-11-15T21:46:58.439Z Has data issue: false hasContentIssue false

GaN Crystals: Growth and Doping Under Pressure

Published online by Cambridge University Press:  10 February 2011

I. Grzegory
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
M. Bockowski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
B. Lucznik
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
M. Wroblewski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
S. Krukowski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
J. Weyher
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
G. Nowak
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
T. Suski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
M. Leszczynski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
H. Teisseyre
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
T. Suski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
E. Litwin-Staszewska
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
S. Porowski
Affiliation:
High Pressure Research Center Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland, izabella@unipress.waw.pl.
Get access

Abstract

The recent progress in high pressure crystallization of GaN is reported. The results of the growth from the solutions of atomic nitrogen in pure Ga and in its alloys with Mg, Ca and Zn are discussed. It is shown that the growth mechanisms and the physical properties of the crystals depend on the type of dopant added into the solution. In particular, high resistivity (104-106Ωcm) GaN crystals of improved structural quality can be grown from solutions containing Mg. It was also observed that the addition of Mg, Ca and Zn suppress yellow photoluminescence commonly observed in GaN crystals grown without an intentional doping. The preparation of surfaces of GaN substrates for homoepitaxy by mechanical and mechanochemical polishing is discussed. It is shown that atomically flat, thermally stable surfaces are possible to obtain by the applied procedures.

Some most interesting results concerning homoepitaxial growth by MOCVD and MBE is shortly reviewed. In particular, it is shown that perfectly matched (strain free) GaN layers can be deposited on the highly resistive GaN:Mg substrates.

Information

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable