Achieving zero-thermal quenching luminescence in ZnGa2O4: 0.02Eu3+ red phosphor

Realization of Broadband Near-Infrared Emission with High Thermal Stability in YGa3(BO3)4: Cr3+ Borate Phosphor

“…The evaluation of luminescence quenching characteristics in phosphors at high temperatures is crucial for their practical application. 43 In this study, we selected the YGBO: 0.075Cr 3+ phosphor with the strongest luminescence intensity as our research object and conducted temperature-dependent (25−250 °C) PL spectra tests (Figure 4a). It can be found that the emission intensity gradually decreases with increasing temperature.…”

Anti-thermal quenching phosphors based on the new phosphate host Ca3.6In3.6(PO4)6

“…In order to maintain the charge balance, two types of lattice defects will be created in the phosphor, based on the Kröger Vink representation. 52,53 One mechanism is that the Dy 3+ ions occupy the Ca 2+ site, forming negatively charged cation vacancy to compensate for the charge, as the following expression:…”

Defect-induced zero thermal quenching of a bright red-emitting nonlinear optical material

“…Several explanations for the effect of zero thermal quenching are based on the following points. [58][59][60][61] (1) Defect energy levels commonly exist in crystals where activated electrons can be trapped and released through electron capture centers, and the energy is transferred from thermally activated defect energy levels to activated ions, resulting in compensating for the emission loss caused by the temperature increase or even boosting the emission intensity. ( 2) When the temperature rises, due to thermal perturbation, electrons enter the charge-transfer state (CTS), which is conducive to reducing the non-radiative transition and enhancing the emission intensity of active ions.…”