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초음파분무법으로 제조한 ZnO/MgO막의 특성

The properties of ZnO/MgO films prepared byultrasonic spray pyrolysis

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초록

Abstract

ZnO films were deposited on MgO substrates (ZnO/MgO) by ultrasonic spray pyrolysis. Substrate temperature varied from 250oC to 350oC. The crystallographic properties and surface morphologies of the ZnO/MgO films were studied by X-ray diffraction and scanning electron microscopy. The properties of photoluminescence (PL) for the films were investigated by dependence of PL spectra on the substrate temperature and the annealing temperature. The ZnO/MgO films prepared at 350oC showed the strongest Ultraviolet light emission peak at 18K and 300K among the films in this study. The annealing process increases the visible light emission, which is due to the increased oxygen vacancies.

참고문헌 (22)

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