Abstract
The effects of Ce- and La-doped WOx nanostructures on the morphology and crystal structures of WOx nanowires are investigated first, then the impact of these dopants on the cathodoluminescence (CL) properties of the WOx nanowires is studied. The dopants induced a morphological evolution and crystalline lattice expansion of the WOx nanostructures. By analyzing the surface composition and oxidation state ratios of W5+/W6+ in each sample using X-ray photoelectron spectroscopy, we attempt to interpret the observed CL spectra shift from ultraviolet to blue emission of the Ce- and La-doped nanowires.
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