Synthesis and photoluminescence properties of a potential red-emitting phosphor Sr2-xNb2O7: xEu3+ for white LEDs

摘要: Abstract A series of phosphors Eu3+-activated Sr2Nb2O7 red emitting were synthesized using a solid-state method in high temperature air. The X-ray diffraction (XRD) pattern showed that the single phase was obtained and particles illustrated narrow size distribution about 0.75 μm. excitation emission spectrum show phosphor can be excited under light 393 nm or 465 nm to emit strong 615 nm. CIE coordinates (x = 0.65, y = 0.37) representative are close pure red. luminescence properties suggest is potential phosphor.