NaYF4: Eu3+ microwires: Synthesis and the mechanism of stark splitting by monitoring time-resolved photoluminescence spectroscopy at high temperature

被引：11

作者：

Han, Qingyan ^{[1
]}

Gao, Wei ^{[1
]}

Qi, Jianxia ^{[1
]}

Zhao, Xing ^{[1
]}

Zhang, Jie ^{[1
]}

Wang, Yongkai ^{[1
]}

Dong, Siwan ^{[1
]}

Liu, Wei ^{[1
]}

Hao, Aihua ^{[1
]}

Dong, Jun ^{[1
]}

机构：

[1] Xian Univ Post & Telecommun, Sch Elect Engn, Xian 710121, Shaanxi, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2019年 / 212卷

基金：

美国国家科学基金会;

关键词：

NaYF4: Eu(3+)microwires; Temperature; Time-resolved photoluminescence spectroscopy; Stark splitting; UP-CONVERSION LUMINESCENCE; NANOCRYSTALS; FLUORIDE; PHOSPHOR;

D O I：

10.1016/j.jlumin.2019.04.039

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new design of NaYF4: Eu(3+)microwires (MWs) with a hexagonal structure were synthesized via a facile hydrothermal method assisted with the sodium citrate, and their microstructure and phase structure have been analyzed. The photoluminescence (PL) mechanism of beta-NaYF4: Eu(3+ )MWs was systematically investigated under 532 nm laser excitation through adjusting MW number and excitation environment including the excited position, laser power, and temperature. The strongest emission peak originated from the D-5(0) -> F-7(2) hypersensitive transition in this system. Furthermore, owing to the special temperature-dependent optical properties of beta-NaYF4: Eu3+ MWs, time-resolved PL spectroscopy with high sensitivity is in situ real-time monitored at 1273 K to reveal the underlying mechanism of stark splitting. Therefore, our study should serve as a promising application in optical thermometry.

引用

页码：227 / 232

页数：6

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