New NaSrPO$_4$:Sm$^{3+}$ phosphor as orange-red emitting material

Bulletin of materials science

CHENG-TANG PAN¹  KUN-HSIEN CHEN¹  MIN-HANG WENG²  RU-YUAN YANG² 

[1] Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung County 804, Taiwan$$Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung County 804, TaiwanDepartment of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung County 804, Taiwan$$;Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung County 912, Taiwan$$Graduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung County 912, TaiwanGraduate Institute of Materials Engineering, National Pingtung University of Science and Technology, Pingtung County 912, Taiwan$$

关键词: Phosphors;    temperature;    conventional solid-state sintering;    luminescence.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Sm$^{3+}$-activated NaSrPO4 phosphors could be efficiently excited at 403 nm, and exhibited a bright red emission mainly including four wavelength peaks of 565, 600, 646 and 710 nm. The highest emission intensity was foundfor NaSr$_{1−x}$PO$_{4}$:$x$Sm$^{3+}$ with a composition of $x = 0.007$. Concentration quenching was observed as the composition of $x$ exceeds 0.007. The decay time values of NaSr1−xPO4:xSm3+ phosphors range from around 2.55 to 3.49 ms. NaSr$_{1−x}$PO$_{4}$:$x$Sm$^{3+}$ phosphor shows a higher thermally stable luminescence and its thermal quenching temperature$T_{50}$ was found to be 350$^{circ}$C, which is higher than that of commercial YAG:Ce$^{3+}$ phosphor and ZnS:(Al, Ag) phosphor. Because NaSr$_{1−x}$PO$_{4}$:$x$Sm$^{3+}$ phosphor features a high colour-rendering index and chemical stability, it is potentially useful as a new scintillation material for white light-emitting diodes.

【 授权许可】

Unknown