荧光粉
材料科学
灵敏度(控制系统)
双功能
激发态
离子
固态照明
光电子学
钙钛矿(结构)
发光二极管
分析化学(期刊)
荧光
化学
光学
原子物理学
结晶学
催化作用
电子工程
物理
工程类
色谱法
有机化学
生物化学
作者
Weiguang Ran,Hyeon Mi Noh,Sung Heum Park,Bo Ram Lee,Junghwan Kim,Jung Hyun Jeong,Jinsheng Shi
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2019-01-01
卷期号:48 (13): 4405-4412
被引量:74
摘要
Herein, Er3+-activated NaLaMgWO6 phosphors were prepared by a traditional high-temperature solid-state method. Based on the double perovskite structure of the NaLaMgWO6 host, we observe the desirable PL properties of Er3+. When excited at about 378 nm, the as-obtained materials can emit strong green light. When applied to a temperature sensor based on the fluorescence intensity ratio (FIR) principle, the prepared phosphors show excellent sensitivity ranging from 303 to 483 K. With elevated operation temperature, the sensitivity is about 2.23% K-1 at 483 K, resulting from the sensitive thermally coupled levels (2H11/2 and 4S3/2) of Er3+ ions in the double perovskite structure. The calculated relative sensitivity of the temperature sensor was 1.04% K-1 at 303 K. In particular, besides high sensitivity, its superior water resistance is an equally thrilling discovery. Therefore, it is demonstrated that the as-prepared Er3+-activated NaLaMgWO6 phosphors have promising potential applications in both near-UV solid-state lighting and non-contact optical thermometry.
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