一种新的荧光粉材料Ca8MgLu（PO4）7:Dy3+的制备及发光特性  

The synthesis and luminescent properties of a novel phosphor Ca8MgLu（PO4）7:Dy3+

作　　者：谢飞燕 徐德康 陈鸿雁 Wasim Ullah khan XIE Feiyan;XU Dekang;Chen Hongyan(School of Chemistry and Materials Engineering, Huizhou University,Huizhou 516007,China;Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education,School of Chemistry and Chemical Engineering,Sun Yat-Sen University, Guangzhou 510275, China)

机构地区：[1]惠州学院化学与材料工程学院,广东惠州516007 [2]生物无机与合成化学教育部重点实验室,中山大学化学与化学工程学院,广东广州510275

出　　处：《湖北大学学报（自然科学版）》2019年第5期506-510,共5页Journal of Hubei University：Natural Science

基　　金：广东省自然科学基金(2016A030313118);惠州市科技计划项目(2016X0421036)资助

摘　　要：采用高温固相法合成一种黄色荧光粉Ca8MgLu(PO4)7 : Dy^3+,通过X线衍射(XRD)荧光光谱(PLE,PL)和荧光寿命研究Ca8MgLu(PO4)7 : Dy 3+的发光特性.在350 nm近紫外光激发下,荧光粉呈黄光发射,蓝光发射峰位于480 nm处(由4F9/2 → 6H15/2 跃迁产生),黄光发射峰位于572 nm处(由4F9/2 → 6H13/2 跃迁产生),以黄光发射为最强.监测 572 nm 最强发射峰,激发光谱覆盖300500 nm,主激发峰位于350 nm.Ca8 MgLu(PO4)7: Dy 3+的热猝灭性能良好:在150 ℃下的发光强度积分是室温25 ℃的87.37%.研究结果表明Ca8MgLu(PO4)7: Dy^3+荧光粉材料有潜力应用于发光二极管(LED)中.A yellow-emitting phosphor Ca8MgLu(PO4)7:Dy^3+ was synthesized by a solid-state reaction. The photoluminescence excitation (PLE), emission (PL) spectra, and decay curves were measured to investigate photo-luminescent property of Dy^3+ in the Ca 8 MgLu(PO4)7 host. Upon excitation at 350 nm, Ca8-MgLu(PO 4 )7:Dy^3+ presented two main emission peaks are located in the blue (480 nm) and yellow (572 nm) regions, which were obtained due to transitions of 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 , respectively, the strongest emission peaks is for yellow. The excitation spectra monitored at 572 nm consisting of many peaks ranging from 300 to 500 nm with a maximum at 350 nm. The yellow-emitting Dy-phosphor Ca8MgLu(PO 4)7:Dy^3+ had good terminal stability. The emission intensity of Ca 8 MgLu(PO4 )7 :Dy^3+ at 150 ℃ under 350 nm excitation still remained 87.37% of that at room temperature. The results indicate that the phosphor Ca 8 MgLu(PO4)7 :Dy^3+ could be served as a potential single-phase phosphor candidate for NUV LED application.

关 键 词：荧光粉 Ca8MgLu(PO4)7: DY^3+ 白光LED 发光特性 

分 类 号：O482.31[理学—固体物理]