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利用火焰喷雾法成功制备了纳米级的ZnO和MgxZn1-xO颗粒.通过对样品的X射线衍射谱和场发射扫描电子显微镜照片分析,发现制备的颗粒大小较为均匀,直径在20nm左右;镁元素的掺入引起晶格常数变小.通过透射光谱和光致发光谱的测量,发现MgxZn1-xO颗粒的禁带宽度远大于ZnO颗粒的禁带宽度,同时对两组样品的紫外发光和可见发光的强度变化和发光机理进行了探讨.
The nanoscale ZnO and MgxZn1-xO particles were successfully prepared by flame spray method.The X-ray diffraction spectrum and field emission scanning electron microscopy (SEM) images of the samples showed that the size of the particles was about 20nm and the size of magnesium Doped lattice constant caused by small.Through transmission spectroscopy and photoluminescence spectra measurements and found that MgxZn1-xO particles forbidden band width is much larger than the ZnO bandgap band width, while the two samples of UV luminescence and visible light intensity Changes and light-emitting mechanism were discussed.