Preparation of Compensation Ions Codoped SrTiO₃:Pr³⁺ Red Phosphor with the Sol-Gel Method and Study of Its Luminescence Enhancement Mechanism

Figure 7

(a) XRD patterns of the first set of samples (A: Pr³⁺0.2%mol; B: Pr³⁺0.2%mol, Mg²⁺10%mol; C: Pr³⁺0.2%mol, Al³⁺25%mol). (b) XRD patterns of the second set of samples (A: Pr³⁺0.2%mol, Al³⁺1%mol; B: Pr³⁺0.2%mol, Al³⁺15%mol; C: Pr³⁺0.2%mol, Al³⁺30%mol).

(a)

(b)