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In this paper, the oxide layer of surface of GaSb could be removed by passivation solution. Moreover, different passivation solution have different passivation effect. After passivation treatment, the PL intensity was enlarged. Then the influence of prove passivation time on the intensity of PL was also discussed. When passivation time was 270s, the sample's intensity of PL was the strongest. Additionally,...
We here report a new passivation method, with neutral sulphur, (NH4)2S, to modify the GaSb surface. The optical and chemical properties of GaSb surface before and after neutral passivation are investigated using x-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) mapping. Neutral (NH4)2S passivation led to 20 times enhancement in photoluminescence (PL) intensity, lower oxide content,...
In this paper, by controlling the annealing temperature, different morphologies porous ZnO nanobelts could be obtained. Scanning electron microscopy, X-ray diffraction, and PL measurement were applied to analyze the morphologies, structural and optical properties of porous ZnO nanobelts. With the annealing temperature increased, the nanopartiles as the constituent parts of ZnO nanobelts became large...
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