A Garnet-Based CaYZrAlO:Eu Red-Emitting Phosphor for n-UV Light Emitting Diodes and Field Emission Displays: Electronic Structure and Luminescence Properties.

A series of CaYZrAlO:Eu (CYZA) phosphors were successfully synthesized through conventional solid-state method. The electronic structure and their photoluminescence or cathodoluminescence properties were investigated in detail. Under n-UV excitation, the CYZA:Eu exhibits more intense red emission than the commercial YO:Eu phosphor. A WLED lamp with good color render index was obtained by fabricating the phosphor with BAM:Eu and LuAG:Ce phosphors. The phosphor also exhibits red emission with high current saturation and high resistance under low voltage electron bombardment. The degradation resistance can be compared to the commercial YO:Eu phosphor. All the results indicate that the CYZA:Eu has potential applications in both white LEDs and FEDs.