Effect of silica coating on luminescence and temperature sensing properties of Nd3+ doped nanoparticles

被引：24

作者：

Kolesnikov, I. E. ^{[1
,2
]}

Kurochkin, M. A. ^{[1
]}

Kalinichev, A. A. ^{[1
]}

Mamonova, D. V. ^{[3
]}

Kolesnikov, E. Yu. ^{[4
]}

Kurochkin, A. V. ^{[1
]}

Lahderanta, E. ^{[2
]}

Mikhailov, M. D. ^{[3
]}

机构：

[1] St Petersburg State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia

[2] LUT, Skinnarilankatu 34, Lappeenranta 53850, Finland

[3] VNTs SI Vavilov State Opt Inst, Sci & Technol Inst Opt Mat Sci, Babushkina 36-1, St Petersburg 192171, Russia

[4] Volga State Univ Technol, Lenin Sqr 3, Yoshkar Ola 424000, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 734卷

基金：

俄罗斯科学基金会;

关键词：

Lanthanides; Nanothermometry; Core-shell; Thermal sensitivity; Biological windows; IN-VIVO; NANOSTRUCTURED MATERIALS; YVO4; NANOPARTICLES; NANOCRYSTALS; SENSITIVITY; CONVERSION; NANOTHERMOMETRY; WINDOW; 1ST;

D O I：

10.1016/j.jallcom.2017.11.048

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：

Structural and luminescence properties of uncovered YVO4:Nd3+ and core-shell YVO4:Nd3+@SiO2 nanoparticles synthesized via modified Pechini technique were studied. Effect of silica shell thickness on steady state and kinetics luminescence parameters was investigated. Synthesized nanoparticles were used as non-contact optical thermometers operating in the second biological window upon heating-free 808 nm light by monitoring fluorescence intensity ratio between Nd3+ emission bands as a temperature-dependent parameter. Benefits of silica coating on the temperature sensing properties were clearly demonstrated. The best thermal sensitivity was found to be 0.40% K-1 at 299 K, the minimum temperature uncertainty was less than 0.5 K, which is enough for accurate temperature evaluation in the real systems. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：136 / 143

页数：8

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