Abstract
P-type Zn1−x Mg x O (0≤x≤0.25) films are obtained through Na doping, as confirmed by repeated Hall-effect measurements and rectification behavior of p-Zn0.81Mg0.19O:Na/n-Zn0.8Mg0.2O:Al quasi-homojunctions. The absorption and photoluminescence spectra indicate the band gap shifts to higher energy in linearly proportional to Mg content. Critically, X-ray diffraction (XRD) patterns reveal that the strain induced by Na doping can be counteracted through an appropriate content of Mg alloying. Both XRD data and Hall-effect data imply that the solubility of Na acceptor should be enhanced by alloying with Mg. The X-ray photoelectron spectrum (XPS) result indicates the existence of Na. Microstructure structure of the film is confirmed by high-resolution transmission electron microscope.
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Zhang, L.Q., Zhang, Y.Z., Ye, Z.Z. et al. The fabrication of Na doped p-type Zn1−x Mg x O films by pulsed laser deposition. Appl. Phys. A 106, 191–196 (2012). https://doi.org/10.1007/s00339-011-6547-1
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DOI: https://doi.org/10.1007/s00339-011-6547-1