Eu^(3+)掺杂诱导CsAgCl_(2)相变及其光学温度传感性质  

Eu^(3+)Doping Induced Phase Transition in CsAgCl_(2) and Its Optical Temperature Sensing Properties

作　　者：赵梦真 李超[1] 张凤[1] 万柄亿 李冰[1] 刘洁[1] 王飞久 ZHAO Mengzhen;LI Chao;ZHANG Feng;WAN Bingyi;LI Bing;LIU Jie;WANG Feijiu(Key Lab of Photovoltaic Materials of Henan Province,School of Future Technology,Henan University,Kaifeng 475001,China;Center for Topological Functional Materials,Henan University,Kaifeng 475001,China)

机构地区：[1]河南大学未来技术学院,光伏材料省重点实验室,河南开封475001 [2]河南大学拓扑功能材料研究中心,河南开封475001

出　　处：《发光学报》2023年第11期1950-1957,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金(52002114,12174086);河南省自然科学基金(232300421201)。

摘　　要：相变是调节材料性能的一种有效方法,在介电、光电、光致发光等领域有着广泛的应用。本文采用水热法合成未知相CsAgCl_(2),并通过升温和Eu^(3+)掺杂将CsAgCl_(2)从未知相转变为正交相。制备的Eu^(3+)掺杂的CsAgCl_(2)具有较高的光学温度灵敏度,在荧光强度模式和荧光寿命模式下的最大相对灵敏度分别为3.63%·K^(-1)和3.20%·K^(-1)。结果表明,CsAgCl_(2)是一种很有前途的高灵敏度光学温度传感材料。Phase transition is an effective way to regulate performance of materials and has been wildly applied in dielectric,photo-electricity and photoluminescence fields.Here,we report the hydrothermal synthesis of unknown phase CsAgCl_(2) and the phase transition of CsAgCl_(2) from unknown phase to orthogonal phase via annealing and Eu^(3+)doping strategies.The as-prepared Eu^(3+)doping CsAgCl_(2) exhibits high optical temperature sensitivities with the maxi⁃mum relative sensitivity values of 3.63%·K^(-1) and 3.20%·K^(-1) for emission intensity mode and decay lifetime mode,respectively.These results indicate that CsAgCl_(2) is a promising candidate to be used as a high-sensitive optical tem⁃perature sensing material.

关 键 词：相变 光学温度传感 水热合成 CsAgCl_(2) Eu^(3+)掺杂 

分 类 号：O482.31[理学—固体物理]