Influence of Al3+doping on the energy levels and thermal property of the 3.5MgO·0.5MgF2·GeO2:Mn4+ red-emitting phosphor

Influence of Al³⁺doping on the energy levels and thermal property of the 3.5MgO·0.5MgF₂·GeO₂:Mn⁴+ red-emitting phosphor

Yuan Lin-lin, Xiao-Song Zhang, Xu Jian-Ping, Sun Jian, Jin Han, Liu Xiao-Juan, Li Lin-Lin, Li Lan†

Fitted curves for ln[ I ₀/ I T )-1] versus 1/ kT from Arrhenius equation. The symbols and straight lines represent the experimental data and fitted line under Al₂O₃ concentrations of 0, 0.05, 0.1, 0.15 mol, respectively.