Single Er3+/Yb3+-Codoped Yttria Nanocrystals for Temperature Sensing: Experimental Characterization and Theoretical Modeling

被引：21

作者：

Galvao, Rodrigo ^{[2
]}

dos Santos, Luiz F. ^{[1
]}

Lima, Karmel de O. ^{[1
]}

Goncalves, Rogeria R. ^{[1
]}

Menezes, Leonardo de S. ^{[2
,3
]}

机构：

[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Lab Mat Luminescentes Micro & Nanoestruturados Ma, BR-14040901 Ribeirao Preto, SP, Brazil

[2] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[3] Ludwig Maximilians Univ Munchen, Fac Phys, Nanoinst Munich, Hybrid Nanosyst, D-80539 Munich, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2021年 / 125卷 / 27期

基金：

巴西圣保罗研究基金会;

关键词：

UP-CONVERSION LUMINESCENCE; ANTI-STOKES; NANOPARTICLES; FLUORESCENCE; THERMOMETRY; SPECTROSCOPY; LANTHANIDE; DYNAMICS; LIFETIME; SIZE;

D O I：

10.1021/acs.jpcc.1c03058

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：

In this work, Er3+/Yb3+-codoped yttria (Y2O3) nanocrystals were characterized for the first time as a thermometric probe at the single nanocrystal level using the luminescence intensity ratio technique. Nanothermometer characterization was performed by exciting the single nanoparticles with a lowpower, continuous-wave laser emitting at 980 nm, within one of the biological windows. The nanothermometer showed a relative sensitivity of 1.31% and an accuracy of 0.1 K at 300 K. The results were described by a rate equation analysis using a dual effective phonon model, which reproduced the expected phonon energy of the host matrix.

引用

页码：14807 / 14817

页数：11

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