Nearly amorphous to epitaxial growth of aluminum nitride films

T. T. Leung, Chung Wo Ong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

Aluminum nitride (AlN) films were prepared by using reactive magnetron sputtering. Substrate temperature Ts, radio frequency power Pw, and substrate materials (including silicon, platinum coated silicon and sapphire) were varied as deposition parameters. Ts-Pwdiagrams were worked out to illustrate how the film structure can be controlled to vary over a broad range covering nearly amorphous, polycrystalline, texture and epitaxial structures. Increases in Tsand Pwhave the effects of increasing the thermal energy of the species on the substrate surface, and enhancing the crystallization of the deposits and preferential orientation of grains. Sapphire substrate has better lattice matching with the AlN structure, which further facilitates the epitaxial growth of the AlN structure.
Original languageEnglish
Pages (from-to)1603-1608
Number of pages6
JournalDiamond and Related Materials
Volume13
Issue number9
DOIs
Publication statusPublished - 1 Sep 2004

Keywords

  • Aluminum nitride films
  • Epitaxial growth
  • Reactive magnetron sputtering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

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