Open AccessYttrium orthoaluminate nanoperovskite doped with Tm^3+ ions as upconversion optical temperature sensor in the near-infrared region
Author(s) -
Miguel A. HernándezRodríguez,
A.D. Lozano-Gorrı́n,
V. Lavı́n,
U.R. Rodrı́guez-Mendoza,
I.R. Martı́n
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.027845
Subject(s) - photon upconversion , yttrium , infrared , materials science , fluorescence , doping , calibration , optics , excitation , ion , optoelectronics , analytical chemistry (journal) , atmospheric temperature range , near infrared spectroscopy , chemistry , physics , organic chemistry , quantum mechanics , chromatography , meteorology , metallurgy , oxide
The thermal sensing capability of the Tm 3+ -doped yttrium orthoaluminate nanoperovskite in the infrared range, synthetized by a sol-gel method, was studied. The temperature dependence of the infrared upconverted emission bands located at around 705 nm ( 3 F 2,3 → 3 H 6 ) and 800 nm ( 3 H 4 → 3 H 6 ) of YAP: Tm 3+ nanoperovskite under excitation at 1210 nm was analyzed from RT up to 425 K. Calibration of the optical sensor has been made using the fluorescence intensity ratio technique, showing a high sensitivity in the near-infrared compared to other trivalent rare-earth based optical sensors working in the same range. In addition, a second calibration procedure of the YAP: Tm 3+ optical sensor was performed by using the FIR technique on the emission band associated to the 3 H 4 → 3 H 6 transition in the physiological temperature range (293-333 K), showing a very high relative sensitivity compared with other rare-earth based optical temperature sensors working in the physiological range. Moreover, the main advantage compared with other optical sensors is that the excitation source and the upconverted emissions do not overlap, since they lie in different biological windows, thus allowing its potential use as an optical temperature probe in the near-infrared range for biological applications.