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The effect of annealing atmosphere, temperature and aging on the photoluminescence of pure and Li-doped ZnO thin films has been investigated. Annealing the pure ZnO in N 2 and He above 800°C results in green emission centered at ca. 500nm; however annealing in air red-shifts the green emission to 527nm. The visible emission of the Li-doped ZnO is found to be largely dependent on the annealing...
We prepared a ZnO/TiO 2 /ZnO multi-layer on quartz glass substrate via electron beam evaporation. Optical and structural properties of the ZnO/TiO 2 /ZnO multi-layer were investigated. The TiO 2 buffer layer is found to improve the crystallinity of the ZnO thin film. A green emission of the ZnO thin film deposited on the TiO 2 buffer layer was significantly enhanced...
ZnO thin films with controlled crystallite orientation have been grown on seeded glass substrate via a chemical solution deposition. The influence of solvent on the ZnO film deposition has been investigated. We have demonstrated that the film texture can be easily controlled by varying the volume ratio of water to ethanol: the crystal orientation ([001] direction) in the films is found to be gradually...
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