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Low-Temperature Solvothermal Route to GaN Nanoparticles

Published online by Cambridge University Press:  21 March 2011

Jianjun Wang ,
Luke Grocholl  and
Edward G. Gillan
Jianjun Wang
Affiliation:
Department of Chemistry, University of Iowa, Iowa City, Iowa 52242-1294
Luke Grocholl
Affiliation:
Department of Chemistry, University of Iowa, Iowa City, Iowa 52242-1294
Edward G. Gillan
Affiliation:
Department of Chemistry, University of Iowa, Iowa City, Iowa 52242-1294
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Abstract

We report a straightforward, non-aqueous solvothermal method for the production of nanoscale gallium nitride structures. Nanoparticles with spherical and rod-like morphologies are produced via in situ gallium azide precursor synthesis and decomposition in superheated toluene or THF. The solution reaction between gallium chloride and sodium azide produces an insoluble azide precursor that is then solvothermally decomposed to GaN at temperatures below 260 °C. The resulting products are poorly crystalline but thermally stable and crystallize to hexagonal GaN upon annealing at 750 °C. Product morphologies include spherical particles (ca. 50 nm) and nanorods. Upon annealing, the nanoparticles coalesce into larger organized crystalline structures with hexagonal facets.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 676: Symposium Y – Synthesis, Functional Properties and Applications of Nanostructures , 2001 , Y8.15
Copyright
Copyright © Materials Research Society 2001

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