A novel green emitting phosphor of Eu2+ doped Ca-7(PO4)(2)(SiO4)(2) was synthesized and its photoluminescence properties were investigated for application in UV LEDs. XRD was used to identify sample phase. Diffuse reflection spectra and photoluminescence spectra were used to investigate its photoluminescence properties. Ca-7(PO4)(2)(SiO4)(2):Eu2+ showed an absorption ranging from 240 to 440 nm in ultraviolet range and a broad green emission band peaked at 522 nm. The concentration quenching mechanism and the key parameters for the fabrication of WLEDs, such as the temperature dependent photoluminescence and CIE value had also been studied.
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Shi et al. (2014) studied this question.
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