A study on the growth morphology of AlN crystals grown by a sublimation process (승화법으로 성장된 AlN 결정의 성장 양상에 관한 연구)

Kang, Seung-Min (강승민)

A study on the growth morphology of AlN crystals grown by a sublimation process

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2009, 19(5), pp.242-245
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Kang, Seung-Min ¹

¹한서대학교

Accredited

ABSTRACT

AlN crystals were grown by a sublimation process without seed crystals and the growth morphology of them was characterized. The grown AlN crystals were a polycrystalline phase, which had a diameter of 60~200 μm and were grown with a growth rate of 0.2~0.5 μm/hr. It was observed that the as-grown crystals had a hexagonal crystal structure and revealed that these crystals were grown with a morphology of columnar morphology in the initial stage of the growth before they were enlarged in a way of a lateral growth behavior in the final stage. On the surface, a lot of pinholes were observed on the surface of crystals grown. The evolution of a growth morphology was characterized by optical and scanning electron microscopic observation

KEYWORDS

AlN crystals, Growth morphology, Columnar crystal growth, Nucleation layer, Sublimation

Citation status

* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19