Photoluminescence properties of ��-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions

doi:10.1016/j.optmat.2015.03.042

CORC > 北京大学 > 地球与空间科学学院

	Photoluminescence properties of ��-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions
	Xue, Weihong ; Zhai, Shuangmeng ; Xu, Shiqing
刊名	optical materials
	2015
DOI	10.1016/j.optmat.2015.03.042
英文摘要	??-Ca3(PO4)2:Sm3+ samples were synthesized under high-pressure and high-temperature conditions. The samples were characterized by X-ray diffraction measurements. The excitation and emission spectra and fluorescence decay curves of synthesized samples were collected to study the photoluminescence properties. The excitation spectra of ??-Ca3(PO4)2:Sm3+ exhibit a series of narrow peaks attributed to the typical f-f transition of Sm3+. The emission spectra of ??-Ca3(PO4)2:Sm3+ compose of four bands attributed to transitions from 4G5/2 excited state to 6HJ/2 (J = 5, 7, 9 and 11) ground states of Sm3+. The average decay lifetimes were obtained by fitting the decay curves for 6H7/2 level of Sm3+ emission using a double exponential function. The photoluminescent spectra of ??-Ca3(PO4)2:Sm3+ show that the samples belong to a red-emitting phosphor and can be pumped in the near ultraviolet light region, which can easily be applied for NUV LED chips and thus in WLEDs. There exists a concentration quenching of Sm3+ in ??-Ca3(PO4)2:Sm3+ samples. The critical concentration of Sm3+ in ??-Ca3(PO4)2 is about 1.0 mol%. ? 2015 Elsevier B.V. All rights reserved.; SCI(E); EI; 0; ARTICLE; xueweihong@vip.gyig.ac.cn; 219-223; 45
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/312433]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Xue, Weihong,Zhai, Shuangmeng,Xu, Shiqing. Photoluminescence properties of ��-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions[J]. optical materials,2015.
APA	Xue, Weihong,Zhai, Shuangmeng,&Xu, Shiqing.(2015).Photoluminescence properties of ��-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions.optical materials.
MLA	Xue, Weihong,et al."Photoluminescence properties of ��-Ca3(PO4)2:Sm3+ prepared under high-pressure and high-temperature conditions".optical materials (2015).