Modification of Luminescent Properties of Red Sulphide Phosphors for White LED Lighting
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Chen Zhihui Xiong Zhaoxian Chen Yayong Song Chunxiao
Key words：phosphor; rare earths; sulphide; luminescent properties;
Abstract: A kind of sulphide, CaS:Eu2+, activated by europium ion for white LED lighting was synthesized via solid-state reaction route in reducing atmospheres. The phosphors were then encapsulated with silicone resin. Moreover, chemical structure of the phosphors was characterized by XRD. Microstructure of the powders was observed by SEM. Spectra of excitation and emission for the phosphors were also obtained by a spectrophotometer. Effect of processing parameters on the luminescent properties of the powders was systematically studied to result in the phosphors with good chemical stability and maximal relative luminescent intensity.
Chen Zhihui1，Xiong Zhaoxian1，Chen Yayong1，Song Chunxiao1
(1.Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China)
Abstract:A kind of sulphide, CaS:Eu2+, activated by europium ion for white LED lighting was synthesized via solid-state reaction route in reducing atmospheres. The phosphors were then encapsulated with silicone resin. Moreover, chemical structure of the phosphors was characterized by XRD. Microstructure of the powders was observed by SEM. Spectra of excitation and emission for the phosphors were also obtained by a spectrophotometer. Effect of processing parameters on the luminescent properties of the powders was systematically studied to result in the phosphors with good chemical stability and maximal relative luminescent intensity.
Key words:phosphor; rare earths; sulphide; luminescent properties;
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