Sr2InP3O11:Eu3+红色荧光粉的发光性能及占位影响
Luminous Performance and Site-occupation Effect of Sr2InP3O11:Eu3+Red Phosphor
梁力 1赵淑娟 1李贵花 1刘一佳 1王荣荣 1蔡格梅1
作者信息
- 1. 中南大学 材料科学与工程学院,湖南 长沙 410083
- 折叠
摘要
红色荧光粉是提高发光二极管(LED)显色指数、降低色温的重要组分.本文选择具有红色特征发射的Eu3+作为激活剂离子,以新型磷酸盐Sr2InP3O11为荧光粉基质,通过高温固相反应合成了系列Sr2-xInP3O11:xEu3+(简化为S2-xIP3:xEu3+)和Sr2In1-xP3O11:xEu3+(简化为S2I1-xP3:xEu3+)荧光粉.利用XRD、室温及变温PL光谱、量子效率和荧光寿命,详细研究了所制备荧光粉的光致发光性能及其受阳离子位点(Sr位和In位)的影响规律.研究结果表明,这两类荧光粉在254 nm和393 nm激发下均可发出明亮的橘红光(593 nm和612 nm主导).此外,所合成的荧光粉具有较好的色稳定性和热稳定性,表明其在荧光粉转换型白光LED照明和显示领域具有一定的发展潜力.
Abstract
Red phosphor is an important component to improve the color rendering index and reduce the color tem-perature of white light emitting diode(LED).In this paper,we select Eu3+with characteristic red emission as activa-tor ions,and new phosphate Sr2InP3O11 is used as the phosphor host.A series of Sr2-xInP3O11:xEu3+(simplified as S2-xIP3:xEu3+)and Sr2In1-xP3O11:x Eu3+(simplified as S2I1-xP3:xEu3+)phosphors were synthesized through high tem-perature solid state reaction.The photoluminescence performance and the effect rule of cation sites(Sr sites and In sites)of phosphor were detailly studied by XRD,room and variable temperature PL spectra,quantum efficiency and fluorescence lifetime.The results show that these two types of phosphors can emit bright red light(dominating by 593 nm and 612 nm)under the radiation of 254 nm and 393 nm.In addition,these synthesized phosphors have aver-age color stability and thermal stability,which indicates that they have certain development potential in the field of phosphor conversion white LED lighting and displaying.
关键词
荧光粉/Eu3+掺杂/占位/发光性能Key words
phosphor/Eu3+doped/site occupation/luminescence property引用本文复制引用
基金项目
国家自然科学基金(51472273)
国家自然科学基金(51772330)
出版年
2024
国家科技期刊平台
NSTL
万方数据