Various one-dimensional GaN nanostructures formed by non-catalytic routes

Heon Jin Choi, Dae Hee Kim, Tae Geun Kim, Jung Chul Lee, Yun Mo Sung

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

GaN crystals were nucleated and grown into various one-dimensional forms by the supersayuration of a source gas via non-catalytic routes. Chemical vapor deposition (CVD) was employed for the GaN growth using Ga metal and ammonia gas as sources. The formation of one-dimensional GaN naostructures including nano-columns, nano-cakes, nano-flowers, and nano-bundles was identified using scanning electron microscopy (SEM). X-ray diffraction (XRD) was performed to analyze crystallinity of each nanostructure. The growth mechanism of thick nano-columns was proposed as the epitaxial growth of GaN (002) hexagonal columns with {100} facets from the GaN thick films. The growth of nano-cakes was suggested as the (002) hexagonal plate formation with {100} facets at the first stage followed by the secondary (002) crystal growth from each plate. The growth mechanism of nano-flowers would be the formation of GaN seed particles first and the subsequent nucleation and growth of GaN (101) nanowires with several directions from the seeds. The growth of nano-bundles is the most interesting structure and the formation mechanism was proposed as the first formation of a GaN (002) nanowire and then subsequent nucleation and growth of GaN (002) and (10-1) nanocrystals at the surface of the primary GaN (002) nanowire.

Original languageEnglish
Pages (from-to)221-225
Number of pages5
JournalJournal of Electroceramics
Volume17
Issue number2-4
DOIs
Publication statusPublished - 2006 Dec 1

Fingerprint

Nanostructures
routes
Nanowires
nanowires
Seed
Nucleation
bundles
Gases
seeds
flat surfaces
nucleation
Crystallization
Ammonia
Epitaxial growth
Crystal growth
Thick films
Nanocrystals
gases
Chemical vapor deposition
thick films

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Choi, Heon Jin ; Kim, Dae Hee ; Kim, Tae Geun ; Lee, Jung Chul ; Sung, Yun Mo. / Various one-dimensional GaN nanostructures formed by non-catalytic routes. In: Journal of Electroceramics. 2006 ; Vol. 17, No. 2-4. pp. 221-225.
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Various one-dimensional GaN nanostructures formed by non-catalytic routes. / Choi, Heon Jin; Kim, Dae Hee; Kim, Tae Geun; Lee, Jung Chul; Sung, Yun Mo.

In: Journal of Electroceramics, Vol. 17, No. 2-4, 01.12.2006, p. 221-225.

Research output: Contribution to journalArticle

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