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High Pressure optical nanothermometer based on Er3+ photoluminescence

Abstract: The optical properties of a sparsely investigated material, LaGdO3 doped with Er3+, are explored regarding its suitability as nanothermometer. Besides its excellent capabilities for dielectric applications, when doping with Er3+, this material provides a highly efficient upconversion photoluminescence (PL) for high temperature thermometry at high pressure due to its structural stability. LaGdO3 belongs to the perovskite-type ABO3 compounds with a B-type monoclinic C2/m space group (a = 14.43 Å; b = 3.69 Å; c = 9.00 Å; and ? = 100.70º) at ambient conditions. It undergoes a structural phase transition to a hexagonal ?3#?1 phase at 3GPa yielding a notable PL enhancement, thus enabling it as a potential high-pressure hightemperature nanothermometer.

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 Autoría: Gutiérrez-Cano V., Valiente R., González J.A., Rodríguez F.,

 Congreso: AIRAPT International Conference on High Pressure Science and Technology (27º : 2019 ; Río de Janeiro)

 Editorial: Institute of Physics

 Año de publicación: 2020

 Nº de páginas: 8

 Tipo de publicación: Comunicación a Congreso

 DOI: 10.1088/1742-6596/1609/1/012004

 ISSN: 1742-6588,1742-6596

 Proyecto español: MAT2015-69508-P

 Url de la publicación: https://doi.org/10.1088/1742-6596/1609/1/012004