Investigation of the Optical Characteristics of the Eu2O3-Doped Sr3Al2O6 Phosphors

In this research, we used the solid-state reaction method to synthesize the Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
powder with the different temperatures. The Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
powder was synthesized at 1000°C-1300°C for 4 h. The variations in the morphologies of Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
phosphors were observed using a FESEM. As the synthesizing temperature increases, the crystallization and particle sizes of the Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
composition are significantly improved. From the photoluminescence excitation spectrum we found that 240 nm was the optimum excitation optical wavelength to excite the Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
phosphors. We had also found that the emission (PL) spectra of the Eu
₂
O
₃
-doped Sr
₃
Al
₂
O
₆
phosphors had sharp peaks in three strong peaks at 389, 592, and 612 nm and had small peak in two weak bands at 290 nm and 651~653 nm.