Influence of Al3+doping on the energy levels and thermal property of the 3.5MgO·0.5MgF2·GeO2:Mn4+ red-emitting phosphor |
Temperature-dependent PL spectra of phosphors with Al2O3 concentration x = 0, 0.05, 0.1, and 0.15 mol under the excitation of 400 nm. |
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