Concentration Dependence of Luminescent Properties for Sr_𝟐TiO_𝟒:Eu^𝟑+ Red Phosphor and Its Charge Compensation

Figure 6

SEM micrographs of (Sr_1−xEu_xLi_x)₂TiO₄ phosphor powders: (a) 𝑥=5.0%, (b) 𝑥=10.0%, (c) 𝑥=15.0%, and (d) 𝑥=20.0%.

(a)

(b)

(c)

(d)