Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 64(1), P. 133 - 141
Published: Dec. 19, 2024
The understanding of energy transfer mechanisms between different excited states Pr3+ is closely bound up with exploiting high-quantum-efficiency Pr3+-doped luminescent thermometers and optimizing their temperature-sensing performances. Herein, we propose a new-type tetragonal-phase Li7La3Zr2O12 (Pr3+:LLZO) garnet thermometer study accompanied photoluminescence (PL) properties. Combining composition optimization, gain fantastic room-temperature PL quantum efficiency within Pr3+:LLZO phosphors (77.48%), value obviously superior to those traditional garnet-type phosphors. thermally induced fluorescence quenching 3P0 emissions mainly originates from phonon-assisted thermal ionization, differing the Y3Al5O12 garnet. By contrast, 1D2 case akin most materials in that behavior seriously associated cross-relaxation states. On basis, luminescence thermometry strategy by utilizing steady-state emissions, performing comparable capability Pr3+-based thermometers. Our findings strengthen importance discerning provide valuable perspective for designing relevant thermometry.
Language: Английский