期刊
JOURNAL OF CRYSTAL GROWTH
卷 386, 期 -, 页码 190-193出版社
ELSEVIER
DOI: 10.1016/j.jcrysgro.2013.10.012
关键词
Chemical vapor deposition processes; Oxides; Gallium compounds; Semiconducting gallium compounds
资金
- JSPS
- MEXT the Element Strategy initiative Project
- Tokyo Institute of Technology
ZnGa2O4 films were grown on (100) MgAl2O4 substrates by mist chemical vapor deposition. A growth window for obtaining single spinet phase was revealed by systematic variations of precursor Zn/Ga ratio and growth temperature, where the cation stoichiometry was maintained through sublimation of excess Zn species before crystalized into ZnO. The epitaxial relationship to the substrate was identified to be cube on cube with no rotation domain. The optical properties of the fully relaxed film were characterized by using cathodoluminescence (CL) and absorption spectroscopies. A large Stokes shift was found between the CL peak energy (3.4 eV) and fundamental absorption edge (4.6 eV), reflecting typical property of Ga-based wide-band-gap oxide semiconductors. (C) 2013 Elsevier B.V. All rights reserved.
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