Nd^(3+)掺杂ZnO-MgO-Al_(2)O_(3)-SiO_(2)系微晶玻璃的制备及光学性能  

Preparation and Optical Properties of Nd-doped ZnO-MgO-Al_(2)O_(3)-SiO_(2) Glass-ceramics

作　　者：焦志伟[1] 侯铮铮 刘伟[1] 张涛[1] 曹雷刚[1] 栗晟 郭延兴 JIAO Zhiwei;HOU Zhengzheng;LIU Wei;ZHANG Tao;CAO Leigang;LI Sheng;GUO Yanxing(North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学,北京100144

出　　处：《陶瓷学报》2021年第5期749-753,共5页Journal of Ceramics

基　　金：General Project of Beijing Municipal Education Commission(KM201610009005)。

摘　　要：采用高温熔融法和热处理制备了Nd^(3+)掺杂的尖晶石相的ZnO-MgO-Al_(2)O_(3)-SiO_(2)系透明微晶玻璃,研究了微晶玻璃热处理条件与光学性能之间的联系。采用差热分析、X射线衍射、紫外-可见分光光度计和荧光光谱仪对样品的析晶行为和光学性能进行了研究。热处理过的微晶玻璃主要析晶相为尖晶石相MgAl_(2)O_(4)和ZnAl_(2)O_(4),随着晶化处理时间的增加,结晶度先升高后下降,晶粒尺寸增长速率变缓。样品的吸收光谱和发射光谱均表明Nd^(3+)进入了尖晶石相。在488 nm的激发光照射下,微晶玻璃在800 nm-1400 nm范围内出现了3个发射峰,并且发射强度随样品结晶度的增加而增加,结晶时间为1.5 h的样品表现出最优良的荧光效果。1064 nm处的发射峰强度远高于其他两个发射峰,说明Nd^(3+)掺杂的ZnO-MgO-Al_(2)O_(3)-SiO_(2)系透明微晶玻璃是一种潜在的近红外荧光材料。Nd^(3+)doped spinel phase glass-ceramics were obtained through heat-treatment of their parent glass prepared by using melt quenching method.The relationship between the heat treatment conditions and optical properties of the glass-ceramics was studied.Differential thermal analysis(DTA),X-ray diffraction(XRD),UV-visible spectrophotometer and fluorescence spectrometer were utilized to characterize crystallization behavior of the glasses and optical properties of the glass-ceramics.It is confirmed that Mg Al_(2)O_(4)and Zn Al_(2)O_(4)were precipitated in the parent glasses after heat treatment.With increasing crystallization time,the degree of crystallization of the glasses is increased first and then decreased,while the average crystals size is increased slowly.Ultraviolet-visible absorption and luminescence behaviors of the as-prepared glass-ceramics were studied,indicating that Nd^(3+)entered the spinel lattice.Over 800~1400 nm,three emission peaks are present,due to the energy level transitions of Nd^(3+).Luminous intensity of the glass-ceramics is increased as the degree of crystallization is increased.The sample after crystallization for 1.5 h shows the strongest fluorescence effect.At 1064 nm,the intensity of the emission peak is much higher than the other two emission peaks,indicating that it is a potential near-infrared fluorescent material.

关 键 词：微晶玻璃 尖晶石 钕离子 荧光 

分 类 号：TQ174.75[化学工程—陶瓷工业]