The influence of self-trapped exciton on luminescence of Pr3+ in aluminate under vacuum ultraviolet excitation
真空紫外光激发下掺Pr3+铝酸盐的自陷激子对Pr3+发光的影响

Spectroscopic properties of SrAl12O19:Pr3+ and Y3Al5O12:Pr3+ have been studied under vacuum ultraviolet excitation at 20, 77 and 300K. Self-trapped exciton(STE) luminescence in these aluminates were observed besides the characteristic emissions of Pr3+. Furthermore, the emission of STE became dominant as the concentration of activators and temperature decreased. The influence of STE on the luminescence of Pr3+ in aluminates was also emphasized.