多方法制备纳米ZrO_2及其光谱特性研究  

Photoluminescence of Tetragonal ZrO_2 Nanoparticles Synthesized by Severral Methods

作　　者：刘丽[1] 江昕[1] 梁家和[2] 李亚栋[2] 李福利[1] 

机构地区：[1]首都师范大学物理系光学研究所,北京100037 [2]清华大学化学系原子分子纳米教育部重点实验室,北京100084

出　　处：《光谱学与光谱分析》2005年第7期1026-1029,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(10174048)资助项目

摘　　要：利用水热法、醇热法、溶胶-凝胶法、微波法和超声法分别制备了纳米ZrO2。使用X射线(X-raydif-fraction)和荧光光谱(PL-Photoluminescence)对样品结构及发光特性进行了表征。不同方法制得稳定的四方相氧化锆纳米微粒,由X射线衍射(XRD)看出产物结晶良好,且粒径较小。测试样品的光致发光谱(PL),发现样品在254和412nm激发光激发时发光效率较高,可以观察到明显的红光和蓝光。对采用不同方法制备的样品,对其性质进行研究和比较。在固体发光特别是半导体发光理论基础上对氧化锆发光特性给出了一定解释,最后对纳米材料光学特性理论模型的建立进行了初步探讨。Five methods for the preparation of stabilized ZrO2 nano-powders have been used. They are hydro-thermal method,alcohol-thermal method, sol-gel method, microwave-irradiation, and sonochemical method. XRD （X-ray diffraction） and PL spectra （Photolspectra） have been utilized to characterize these samples. Stable tetragonal nanometre ZrO2 powders have been synthesized by these methods. From the XRD pattern, it is clear that the ZrO2 samples we obtained are crystal and distributed well. The PL pattern shows that the nano-ZrO2 powders can emit clear red and blue light when they are excited by the ultraviolet. The emphasis of this thesis is to discuss the ZrO2 emission nanoerystals＇ luminescent procedures.

关 键 词：纳米氧化锆 光致发光 吸收和跃迁 

分 类 号：O433.5[机械工程—光学工程]