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Kwon, Soon-Yong
Frontier, Innovative Nanomaterials & Devices (FIND) Lab
Research Interests
  • Semiconductor Epitaxy, thin film technology & surface/ interface Science

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Growth of cubic InN on GaP(100) with GaN buffer by metalorganic chemical vapour deposition

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Title
Growth of cubic InN on GaP(100) with GaN buffer by metalorganic chemical vapour deposition
Author
Kwon, Soon-YongSun, Q.Kwak, J.Seo, H-CHan, J.
Keywords
Droplet formation; GaN buffer; Growth conditions; Growth mechanisms; Growth regime; InN layers; Metalorganic chemical vapour deposition; Oxide phase; Substrate temperature; Surface decomposition; Technological applications; Thermally activated; Three-dimensional growth; Zincblende structures
Issue Date
201107
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF PHYSICS D-APPLIED PHYSICS, v.44, no.28, pp.1 - 6
Abstract
Growth of cubic InN (c-InN) under N-rich condition was achieved by metalorganic chemical vapour deposition on GaP(1 0 0) substrates with a cubic GaN (c-GaN) buffer layer. Insertion of the c-GaN buffer layer suppressed In droplet formation in c-InN. X-ray diffraction and transmission electron microscopy investigations showed that the InN layers have zincblende structure with only a small fraction of oxide phase inclusions and no significant hexagonal InN is present. By systemically varying growth conditions, it was found that the c-InN growth is dominated mainly by In adatoms' surface diffusion and InN surface decomposition and three distinct regimes of c-InN growth are observed. The growth of c-InN on c-GaN/GaP(1 0 0) templates eventually followed a three-dimensional growth mode in the thermally activated growth regime and density and size distribution of c-InN dots significantly changed with substrate temperature and growth rate. These results provide a stronger understanding of the growth mechanism to design and engineer InN-based nanostructures with desired shapes for potential technological applications.
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DOI
http://dx.doi.org/10.1088/0022-3727/44/28/285403
ISSN
0022-3727
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