Abstract
Molecular beam epitaxial growth of the widegap Zn1-xMgxO alloys on Si (111) substrates is reported. A series of single-phase wurtzite Zn1-xMgxO alloys with Mg-content up to x = 0.43 are successfully obtained. It is revealed by x-ray diffraction measurement that further increase from the Mg-content promotes inclusion of rocksalt Zn1-xMgxO alloys. Room-temperature cathodoluminescece spectra from these Zn1-xMgxO alloys show a blueshift of peak energy with increasing Mg-content.
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