Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions

Luminescence thermometry exploiting luminescence kinetics as a thermometric parameter is regarded one of the most reliable temperature readout techniques. Transition metal ions are particular interest in this application which due to possibility modulating their spectroscopic properties by changing strength crystal field matrix. In work, we present strategy modulate parameters including relative sensitivity and useful range luminescent thermometers based on lifetime Ti3+ introducing lanthanide (Ln3+) doping SrTiO3 CaTiO3. The mutual effect distortion local symmetry associated with introduction Ln3+ and/or ? energy transfer enabled sensitivities SR = 5.87% K?1 at 140 K for SrTiO3:Dy3+ 4.51% 251 CaTiO3:Gd3+.