Pr3+-doped perovskite niobate ceramics towards improving performance of optical temperature sensor by second harmonic generation (SHG) combined with lanthanide luminescence. (1st May 2023)

• Record Type: Journal Article
• Authors: Soler-Carracedo, Kevin; Zheng, Teng; Runowski, Marcin; Luo, Laihui; Martín, Inocencio R.
• Is Part Of: Ceramics international. Volume 49(2023)Part A
• Page Start: 14177
• Page End: 14182
• Publication Date: 2023-05-01
• Subjects: Non-linear optical thermometry -- Pr3+ doped materials -- Luminescent temperature sensor -- Phase transition; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2023.01.004
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: (Kx Na1-x ) NbO3 (KNN) perovskite ceramics doped with Pr 3+ ions were successfully synthesized. Under pulsed laser excitation, the KNN: Pr 3+ material shows intense Pr 3+ down-shifting luminescence combined with color-tunable, excitation wavelength-dependent second-harmonic generation (SHG) phenomena. The intensity ratio between the Pr 3+ emission bands, as well as between the Pr 3+ and the SHG signal were analyzed as a function of temperature. The intensity ratio from Pr 3+ emission bands of I610 /I655 has a maximum relative sensitivity of 6.41 %K −1 at 420 K. In the case of the ISHG /I610 ratio, the maximum sensitivity of 5.93 %K −1 at 560 K was obtained. Temperature resolutions were also analyzed, with the ISHG /I610 ratio showing minimum values of 0.07 K compared to the minimum of 0.105 obtained for the I610 /I655 ratio. Worth mentioning that the use of SHG allows to increase the working range of the thermal sensor more than 140 K, as the ratio between Pr 3+ emission bands could not be measured further than 420 K due to the thermal quenching effect of the 3 P0 → 3 F2 transition. The developed thermometer can be used as a highly-sensitive, dual-mode (multi-parameter) temperature sensor, i.e., combining luminescence thermometry and SHG based thermometry. Graphical abstract: Image 1