荧光粉
热液循环
铬
发光
半最大全宽
兴奋剂
材料科学
Crystal(编程语言)
水热合成
分析化学(期刊)
矿物学
晶体结构
热稳定性
化学
化学工程
光电子学
结晶学
冶金
色谱法
计算机科学
工程类
程序设计语言
有机化学
作者
Yifan Yang,Yongqi Zhu,Shuang Wu,Xinyue Li,Qinan Mao,Yifan Chen,Jiasong Zhong,Y. M. Zhu
标识
DOI:10.1088/2053-1591/ad0bc9
摘要
Abstract: In this study, a series of near-infrared (NIR) KZnF 3 :Cr 3+ phosphors was prepared by different chromium sources using a HF-free hydrothermal method. The influence of different chromium sources on the crystal structure, morphology, and luminescence properties of Cr 3+ -doped KZnF 3 phosphors were systematically investigated. The results showed that the chromium source changed from CrF 3 ·xH 2 O to (NH 4 ) 3 CrF 6 and leaded to an increased crystal field, resulting in a blue shift of the emission peak position from 803 nm to 753 nm, accompanied by the full-width half maximum (FWHM) reduced from 140 nm to 122 nm. Moreover, KZnF 3 :0.03Cr 3+ (CrF 3 ·xH 2 O) and KZnF 3 :0.03Cr 3+ ((NH 4 ) 3 CrF 6 ) phosphors maintained 58% and 87% of their initial room-temperature intensity at 423 K, respectively. These results indicated that altering the synthetic raw materials provided new insights for designing NIR phosphors with highly thermal stability.
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