Temperature sensing with Eu3+ doped TiO2 nanoparticles
| Autor: | Miroslav D. Dramićanin, Željka Antić, Jovan M. Nedeljković, Sanja Ćulubrk, Marko Nikolić |
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| Rok vydání: | 2014 |
| Předmět: |
Anatase
Photoluminescence Materials science Doping Metals and Alloys Analytical chemistry Nanoparticle chemistry.chemical_element Non radiative relaxation Luminescence thermometry Atmospheric temperature range Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Europium chemistry Materials Chemistry TiO2 Nanoparticles Emission spectrum Electrical and Electronic Engineering Luminescence Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2014.04.108 |
| Popis: | Luminescence temperature sensing with Eu3+ doped TiO2 nanoparticles was tested over a temperature range of 307-533K. Anatase Eu3+:TiO2 nanoparticles of 10-20 nm in diameter are prepared using the hydrolytic sol-gel route. In photoluminescence emission spectra of Eu3+:TiO2 nanoparticles two distinct spectral regions are observed: the high energy spectral region associated with the trap emission of the TiO2 host, and the low energy spectral region with well resolved emission peaks of the Eu3+ ions. The ratio between Eu3+ emission and TiO2 trap emission, and the Eu3+ emission decay shows strong temperature dependence, and are tested for temperature sensing. It is found that relative sensor sensitivity ranges from 0.17 to 2.43%K-1 and is among the highest recorded for inorganic nanosensors. Temperature resolution is better than 1 K over a wide temperature range and reaches 0.33 K for decay measurements and 0.46K for the fluorescence intensity ratio measurements at about 400 K. (C) 2014 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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