准薄膜状氧化锌晶体的制备温度与其结构和发射光谱的研究  

Study of Structure and Emission Spectra on Preparation Temperature of Quasi-films ZnO Crystals

作　　者：杨黎[1] 程永进[2] 安黛宗[1] 景锐平[2] 刘长珍[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院,武汉430074 [2]中国地质大学数学与物理学院,武汉430074

出　　处：《材料导报》2010年第2期16-18,28,共4页Materials Reports

基　　金：湖北省自然科学基金项目(2006AB345)

摘　　要：采用均匀沉淀法制备准薄膜状纳米氧化锌晶体,并通过X射线衍射、扫描电镜、热重-差热和激光诱导光致发光4种手段对不同热处理温度下所获得的样品进行表征,具体分析了样品的处理温度与晶体的形貌、纯度、结构参数以及发射光谱之间的关系。其次,在激光诱导光致发光实验中观察到,在波长为386nm和510nm处有较强的光发射,显示该种纳米材料存在双光子吸收现象,这为研发短波长光电器件展示了良好的应用前景。ZnO nano-crystals with quasi-film shape are prepared by homogeneous precipitation method. Then the ZnO samples made under different heat-treated temperature are characterized with the aid of X-ray diffraction, scanning electron microscope, thermo-gravimetric-differential scanning calorimeter and laser induced photoluminescence respectively. The relationship is analyzed between heat-treated temperature the nano-crystal and its properties, such as its shape, purity, structure parameters and emission spectra. Furthermore as there exists a characteristic of double photons absorption in the material and there is strong light emission of wavelength of 386nm and 510nm from it in laser induced photoluminescence, it shows a good prospect of applications in the development of photoelectric devices with short wavelength.

关 键 词：氧化锌 准薄膜 制备温度 发射光谱 

分 类 号：O6[理学—化学]