We produced gallium oxide (Ga2O3) nanomaterials with various
widths on chromium (Cr) substrates by the thermal evaporation of GaN
powders. We characterized the samples using X-ray diffraction, scanning
electron microscopy, transmission electron microscopy, energy dispersive
X-ray spectroscopy and photoluminescence spectroscopy. The results showed
that the products consisted of belt-like Ga2O3 nanomaterials,
which had monoclinic structures. The photoluminescence spectrum showed a
blue light emission.