Journal ArticleDOI
Effect of Hydrogenation on ZnO Luminescence
TLDR
In this article, the effect of hydrogenation on the luminescence property of ZnO crystal was investigated by means of cathodoluminescence (CL) and it was found that hydrogen plasma treatment strongly passivates the green emission and enhances the band edge luminance.Abstract:
The effect of hydrogenation on the luminescence property of ZnO crystal was investigated by means of cathodoluminescence (CL). It was found that hydrogen plasma treatment strongly passivates the green emission and enhances the band edge luminescence. The band edge luminescence of ZnO crystals in the as-grown state does not show any significant temperature dependence. However, that of hydrogenated ZnO crystals shows strong temperature dependence and the intensity increases significantly at low temperatures. At 30 K, the number of luminescent photons exceeds several tenths of generated electron-hole pairs.read more
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Journal ArticleDOI
Fundamentals of zinc oxide as a semiconductor
TL;DR: In this article, the status of zinc oxide as a semiconductor is discussed and the role of impurities and defects in the electrical conductivity of ZnO is discussed, as well as the possible causes of unintentional n-type conductivity.
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Native point defects in ZnO
TL;DR: In this paper, the authors performed a comprehensive first-principles investigation of point defects in ZnO based on density functional theory within the local density approximation (LDA) as well as the $\mathrm{LDA}+U$ approach for overcoming the band-gap problem.
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Dry etching of ZnO films and plasma-induced damage to optical properties
TL;DR: In this paper, the effects of plasma chemistries on etch characteristics and plasma-induced damage to the optical properties of ZnO films have been studied using inductively coupled plasmas.
Journal ArticleDOI
Defects in ZnO
TL;DR: A review of defects in ZnO is presented in this paper, with an emphasis on the physical properties of point defects in bulk crystals, and the problem of acceptor dopants remains a key challenge.
Journal ArticleDOI
Structural, optical, and surface acoustic wave properties of epitaxial ZnO films grown on (0112) sapphire by metalorganic chemical vapor deposition
C. R. Gorla,Nuri W. Emanetoglu,S. Liang,William E. Mayo,Yicheng Lu,Michael Wraback,Hongen Shen +6 more
TL;DR: In this paper, high quality epitaxial ZnO films were grown on R-plane sapphire substrates by metalorganic chemical vapor deposition, and the structural, piezoelectric, and optical properties of the films were investigated.