Er^(3+)掺杂硫系玻璃的析晶行为及上转换发光研究  

Crystallization Behavior and Up-Conversion Luminescence of Er^(3+)-Doped Chalcogenide Glasses

作　　者：周港杰 傅燕青 康世亮 林常规 Zhou Gangjie;Fu Yanqing;Kang Shiliang;Lin Changgui(Laboratory of Infrared Materials and Devices,Research Institute of Advanced Technologies,Ningbo University,Ningbo 315211,Zhejiang,China)

机构地区：[1]宁波大学高等技术研究院红外材料及器件实验室,浙江宁波315211

出　　处：《激光与光电子学进展》2022年第15期67-71,共5页Laser & Optoelectronics Progress

基　　金：宁波市自然科学基金(202003N4008)。

摘　　要：稀土离子掺杂硫系玻璃陶瓷具有较低的声子能量,使得硫化物纳米晶在发光调控方面极具优势。本文制备了不同摩尔分数Er^(3+)掺杂的80GeS_(2)·20Ga_(2)S_(3)硫系玻璃及玻璃陶瓷样品,采用先进的结构与性能表征手段,探讨了稀土离子掺杂摩尔分数以及析晶行为对Er^(3+)离子的上转换发光的影响。研究结果表明,Er^(3+)的引入使得玻璃转变温度和初始析晶温度降低,有助于玻璃成核析晶。同时,Er^(3+)离子摩尔分数高的样品在相同的析晶热处理制度下呈现更强的Ga_(2)S_(3)析晶衍射峰,晶粒尺寸均小于100 nm。Ga_(2)S_(3)纳米晶的析晶使得Er^(3+)离子的上转换发光增强近5倍,并且最佳发光掺杂摩尔分数从原来的0.75%增至1%。Rare earth doped chalcogenide glass-ceramics possess advantages for luminescence regulation because of their low phonon energy and sulfide nanocrystals.Here,80GeS_(2)·20Ga_(2)S_(3) chalcogenide glasses and glass-ceramics doped with different mole fractions Er^(3+)ions were prepared and investigated via advanced structure and performance characterization.Effect of rare earth content and crystallization on the up-conversion luminescence of Er^(3+)ions was discussed accordingly.The results show that the introduction of Er causes the decreasing glass transition temperature and onset temperature of crystallization peak,leading to the presence of stronger diffraction peaks corresponding to Ga_(2)S_(3) phase in the samples containing more Er^(3+)ions.The crystallization of Ga_(2)S_(3) nanocrystals enhances the up-conversion by nearly 5 times,and the optimal luminescence doping mole fraction increases from 0.75%to 1%.

关 键 词：材料 硫系玻璃 铒离子 上转换发光 析晶 玻璃陶瓷 

分 类 号：O436[机械工程—光学工程]