期刊
JOURNAL OF LUMINESCENCE
卷 193, 期 -, 页码 39-43出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2017.09.001
关键词
Ratiometric thermometers; Eu3+ luminescence; Alumino-phosphate glass
类别
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior [CAPES - 59/300.634/2016]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [CNPq - 05412/2014-0]
- Fundacao de Apoio ao Desenvolvimento do Ensino, Ciencia e Tecnologia do Estado de Mato Grosso do Sul [FUNDECT - 59/300.031/2015, 23/200.735/2014]
Very few devices are capable to measure temperature with high precision and sensitive, mainly in the micro and nanoscale. It is known that for biological applications it is required high sensitivity devices in a short temperature range (288-323 K). Recent reports are proposing the use of ratiometric thermometers based in the luminescence of trivalent lanthanide ions. In this paper, the ratiometric thermometer characteristic was investigated in an alumino-phosphate glass doped with Eu2O3. The studied temperature range was 288 - 333 K, and the material presents high sensitivity values (1.25-1.68% per K). The luminescence of Eu3+ -doped aluminophosphate glass does no present losses by energy transfer mechanism in this temperature range, making a quick predicable thermometric parameter by use of ratio between the integrated intensities of D-5(0) -> F-7(2) and D-5(0) -> F-7(0) transitions, respectively. Both excitation and emission are in wavelengths not strongly absorbed by living tissues, becoming promising material to applications in the laboratories scale, as the temperature measurements of cell cultures, and monitoring of tissues that does not require high penetration of excitation wavelengths.
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