Thermal stability and reliability studies of (Sr, Ca) AlSiN3:Eu2+ phosphors for LED application

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光单元技术研发中心

	Thermal stability and reliability studies of (Sr, Ca) AlSiN3:Eu2+ phosphors for LED application
	Li, Yang; Hu, Lili; Yang, Bobo; Zou, Jun; Shi, Mingming
刊名	J. Mater. Sci.-Mater. Electron.
	2017
卷号	28 期号:24 页码:19155
通讯作者	liyang123@sit.edu.cn ; hulili@siom.ac.cn
英文摘要	In this paper, the thermal stability and reliability properties of (Sr, Ca) AlSiN3:0.05Eu(2+) phosphors prepared by solid-state reaction in 1.1 MPa N-2 atmosphere were studied. The internal quantum efficiency of (Sr, Ca) AlSiN3:0.05Eu(2+) could reach as high as about 92% after Sr ions replacing Ca upon excitation in blue light range (450-470 nm). As the temperature increased from 300 to 500 K, PL intensity of SrxCa1-xAlSiN3:0.05Eu(2+) phosphor decreases by 66.24, 27.87 and 16.66% of the initial PL intensity for x = 0.2, 0.5 and 0.8, respectively. The relative PL intensity of SrxCa1-xAlSiN3:0.05Eu(2+) phosphor decrease to 98.67% from 96.87% as x increased to 0.8 from 0.2 after storing into an ambient condition of 120 A degrees C for 1 h and -40 A degrees C for 1 h by turns for five times. Reliability test results show that, with x value is from 0.2 to 0.8, the relative PL intensity of SrxCa1-xAlSiN3:0.05Eu(2+) phosphor is from 95.87 to 86.51% after the ambient condition of 85 A degrees C/RH 85% for the exposure time of 168 h, from 99.86 to 92.45% after soaking the phosphors into boiled water for 3 h. It can be summarized that the addition of Sr increased the thermal stability largely and deteriorates the reliability of the phosphors slightly. And the reactivity of phosphor with water is the main reason for reducing the reliability of the phosphors.
收录类别	SCI
资助信息	National Nature Science Foundation of China [51302171]; Science and Technology Commission of Shanghai Municipality (CN) [14500503300]; Shanghai Municipal Alliance Program [Lm201547]; Shanghai Cooperative Project [ShanghaiCXY-2013-61]; Jiashan County Technology Program [20141316]
WOS记录号	WOS:000415054600099
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/28332]
专题	上海光学精密机械研究所_高功率激光单元技术研发中心
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Li, Yang,Hu, Lili,Yang, Bobo,et al. Thermal stability and reliability studies of (Sr, Ca) AlSiN3:Eu2+ phosphors for LED application[J]. J. Mater. Sci.-Mater. Electron.,2017,28(24):19155.
APA	Li, Yang,Hu, Lili,Yang, Bobo,Zou, Jun,&Shi, Mingming.(2017).Thermal stability and reliability studies of (Sr, Ca) AlSiN3:Eu2+ phosphors for LED application.J. Mater. Sci.-Mater. Electron.,28(24),19155.
MLA	Li, Yang,et al."Thermal stability and reliability studies of (Sr, Ca) AlSiN3:Eu2+ phosphors for LED application".J. Mater. Sci.-Mater. Electron. 28.24(2017):19155.