Ni^2＋掺杂透明ZnO-Al2O3-SiO2系微晶玻璃的光学性质  

Optical Properties of Ni^2＋ -doped Transparent ZnO-Al2O3-SiO2 System Glass Ceramics

作　　者：吴伯涛[1,2] 乔延波[1,2] 任进军[1,2] 胡晓[1,2] 阮健[1,2] 陈丹平[1] 邱建荣[3] 

机构地区：[1]中国科学院上海光学精密机械研究所强光物理国家重点实验室,上海201800 [2]中国科学院研究生院,北京100039 [3]浙江大学硅材料国家重点实验室,杭州310027

出　　处：《武汉理工大学学报》2007年第E01期251-253,共3页Journal of Wuhan University of Technology

基　　金：国家基金委自然科学基金（No.50672087）和国家科技部973项目（2006CB80600b）.

摘　　要：采用传统熔融冷却的方法制备了透明Ni^2＋掺杂ZnO-Al2O3-SiO2系玻璃，结合X-射线、吸收和荧光等测试手段，研究了不同热处理温度对Ni^2＋掺杂透明ZnO-Al2O3-SiO2系微晶玻璃光学性质的影响。由X-射线衍射谱鉴定出微晶玻璃中析出的晶相为ZnAl2O4微晶，其尺寸在13nm以下。玻璃中没有发现近红外发光，而在微晶玻璃中存在宽带近红外发光，其可归属为八面体六配位Ni^2＋离子的^3T2g（^3F）激发态向^3A2g（^3F）基态的跃迁。随热处理温度升高发光强度增强，而发射峰位则发生蓝移；荧光半高宽随热处理温度升高逐渐下降，但都在210nm以上。Transparent Ni^2＋-doped ZnO-Al2O3-SiO2 systern glass was fabricated by conventional melt-quenching method. The dependence of thermal treatment temperature on optical properties of transparent Ni^2＋ -doped ZnO-Al2O3-SiO2 system glass ceramics were studies by X-ray diffraction, absorption and fluorescence. The precipitated phases were ZnAl2O4 crystallites according to X-ray diffraction patterns, which size were under 13 nm. Broadband near-infrared luminescence was not observed in the glass, while did in the glass ceramics. This broadband luminescence could be assigned to the transition of ^3T2g（^3F） excited stated to ^3A2g（^3F） ground state from octahedral sixfold Ni^2＋ ions. With the thermal treatment temperature increasing the emission intensity increased while the emission position showed a blue-shift. The fluorescent full width at half maximum with more than 210 nm gradually decreased with the thermal treatment temperature.

关 键 词：透明微晶玻璃 NI^2+ 吸收 宽带发光 

分 类 号：TN213[电子电信—物理电子学]