Bi^(3+)、Eu^(3+)共掺双钙钛矿Gd_(2)ZnTiO_(6)荧光粉制备及其温度传感性能  

Preparation and Temperature Sensing Properties of Bi^(3+),Eu^(3+)Co-doped Double Perovskite Gd_(2)ZnTiO_(6) Phosphor

作　　者：温一诺 陈彦伶 付杰 林健华 周柳艳 李杰 韩明晓 陈书阳 邓德刚 陈亮[1] WEN Yinuo;CHEN Yanling;FU Jie;LIN Jianhua;ZHOU Liuyan;LI Jie;HAN Mingxiao;CHEN Shuyang;DENG Degang;CHEN Liang(Institute of Optoelectronic Materials and Devices,China University of Metrology,Hangzhou 310018,China)

机构地区：[1]中国计量大学光电材料与器件研究所,浙江杭州310018

出　　处：《发光学报》2023年第4期615-626,共12页Chinese Journal of Luminescence

基　　金：国家自然科学基金(52172164);浙江省高等学校基础研究基金(2020YW21,2020YW23,2019YW03,2020YW31)。

摘　　要：采用高温固相法制备了一系列具有双发射中心的Gd_(2(1-x-y))ZnTiO_(6)∶xBi^(3+),y Eu^(3+)荧光粉。采用X射线衍射、扫描电子显微镜、荧光光谱、寿命衰减曲线和变温发射光谱等方法,系统地研究了该材料的结构、发光性能和温度传感特性。在Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)荧光粉中,Bi^(3+)和Eu^(3+)离子占据了Gd^(3+)离子的位置。在紫外激发下,Eu^(3+)的激发光谱和Bi^(3+)的发射光谱存在光谱重叠,表明从Bi^(3+)到Eu^(3+)可能存在能量传递。通过荧光强度比技术探究了Bi^(3+)蓝光发射与Eu^(3+)红光发射的不同温度响应特性。在293~473 K温度范围内,测得Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)荧光粉的最大相对温度灵敏度为1.133%·K^(-1),最大绝对灵敏度为0.73%·K^(-1)。因此,Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)荧光粉是一种有潜力的非接触式光学测温材料。A series of Gd_(2(1-x-y))ZnTiO_(6)∶xBi^(3+),yEu^(3+)phosphors with dual emission centers were prepared by high-temperature solid phase method.The structure,luminescence properties and temperature sensing characteristics of the material were systematically studied by X-ray diffraction,scanning electron microscopy,fluorescence spectroscopy,lifetime decay curve and variable temperature emission spectroscopy,respectively.In Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)phosphor,Bi^(3+)and Eu^(3+)ions occupy Gd^(3+)ion position.Under UV excitation,the excitation spectra of Eu^(3+)and emission spectra of Bi^(3+)overlap,indicating that there may be energy transfer from Bi^(3+)to Eu^(3+).The fluorescence intensity ratio technique was used to explore the different temperature response characteristics of Bi^(3+)blue light emission and Eu^(3+)red light emission.In the temperature range of 293-473 K,the maximum relative temperature sensitivity of Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)phosphors was 1.133%·K^(-1),and the maximum absolute sensitivity value was 0.73%·K^(-1),respectively.Therefore,Gd_(2)ZnTiO_(6)∶Bi^(3+),Eu^(3+)phosphor is a potential non-contact optical temperature measurement material.

关 键 词：Gd_(2)ZnTiO_(6)∶Bi^(3+) Eu^(3+) 双钙钛矿 荧光能量传递 光学测温 荧光强度比 

分 类 号：O482.31[理学—固体物理]