Low-temperature thermometry based on upconversion emission of Ho/Yb-codoped Ba0.77Ca0.23TiO3 ceramics

被引：132
作者：
Du, Peng [1 ]
Luo, Laihui [2 ]
Yu, Jae Su [1 ]
机构：
[1] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin 446701, South Korea
[2] Ningbo Univ, Dept Microelect Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 632卷
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
Rare earth; Ferroelectric; Upconversion; Thermometry; UPCONVERTING NANOPARTICLES; LUMINESCENCE; PHOTOLUMINESCENCE; GLASS; NANOCRYSTALS; PHASE; FILMS; ER3+; SIZE; LN;
D O I：
10.1016/j.jallcom.2015.01.130
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ho/Yb-codoped Ba0.77Ca0.23TiO3 ferroelectric ceramics were prepared by a solid-state reaction method. Under the excitation of 980 nm, all the samples exhibited strong green, red and near-infrared upconversion emissions. Upconversion emission intensities of the Ho/Yb-codoped Ba0.77Ca0.23TiO3 ferroelectric ceramics can be enhanced with moderate Yb addition. Additionally, optical temperature sensing properties based on the upconversion emissions of the Ba0.77Ca0.23Ti0.975Ho0.005Yb0.03O3 ferroelectric ceramics were also investigated. The result demonstrated that the optical temperature sensor can be operated in the temperature range of 93-300 K with a maximum sensitivity of about 0.0053 K-1 at 93 K. Compared with other rare-earth doped materials, it is much easier and cheaper to synthesize Ho/Yb-codoped Ba0.77Ca0.23TiO3 ferroelectric ceramics. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：73 / 77
页数：5
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