Affordable Access

Publisher Website

Growth of single-phase Mg0.3Zn0.7O films suitable for solar-blind optical devices on RS-MgO substrates

Authors
Journal
Thin Solid Films
0040-6090
Publisher
Elsevier
Publication Date
Volume
520
Issue
6
Identifiers
DOI: 10.1016/j.tsf.2011.08.019
Keywords
  • Magnesium Zinc Oxide
  • Molecular Beam Epitaxy
  • Magnesium Oxide
  • Solar-Blind
  • Rutherford Backscattering Spectrometry
  • X-Ray Diffraction

Abstract

Abstract Single-phase rock-salt Mg 0.3Zn 0.7O film was fabricated on MgO (100) substrate by radio-frequency plasma assisted molecular beam epitaxy. A smooth surface was observed by in-situ reflection high-energy electron diffraction and ex-situ atomic force microscopy. X-ray diffraction characterization demonstrated a high-quality single-phase structure with highly (200) orientation and cube-on-cube epitaxial relationship. Zn fraction in the single-phase rock-salt Mg 0.3Zn 0.7O film was determined by Rutherford backscattering spectrometry. Optical property of the film was investigated by reflectance spectroscopy, which indicated a solar-blind band gap of 255.5 nm. The reason why Zn solubility limit is greatly enhanced in non-polar (100) film compared with (111) polar epilayer is tentatively discussed in this work, suggesting MgO (100) is more suitable for the synthesis of single-phase rock-salt MgZnO with high Zn content towards solar-blind opto-device applications.

There are no comments yet on this publication. Be the first to share your thoughts.