VIV-UV excited luminescent properties of LnCa4O(BO3)3 : RE3+(Ln = Y, La, Gd; Re=Eu, Tb, Dy, Ce)

	VIV-UV excited luminescent properties of LnCa4O(BO3)3 : RE3+(Ln = Y, La, Gd; Re=Eu, Tb, Dy, Ce)
	Yang, HC; Li, CY; He, H; Tao, Y; Xu, JH; Su, Q; Tao Y(陶冶); Xu JH(徐建华)
刊名	JOURNAL OF LUMINESCENCE
	2006
卷号	118 期号:1 页码:#REF!
关键词	calcium lanthanide oxyborate rare-earth ions VUV luminescence
通讯作者	Su, Q (reprint author), Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China.
英文摘要	Calcium lanthanide oxyborate doped with rare-earth ions LnCa(4)O(BO(3))(3):RE(3+) (LnCOB:RE, Ln = Y, La, Gd, RE = Eu, Tb, Dy, Cc) was synthesized by the method of solid-state reaction at high temperature. Their fluorescent spectra were measured from vacuum ultraviolet (VUV) to visible region at room temperature. Their excitation spectra all have a broadband center at about 188 nm, which is ascribed to host absorption. Using Dorenbos' and J phi rgensen's work [P. Dorenbos, J. Lumin. 91 (2000) 91, R. Resfeld, C.K. J phi rgensen. Lasers and Excite States of Rare Earth [M], Springer, Berlin, 1977, p. 45], the position of the lowest 5d levels E(Ln,A) and charge transfer band E(ct) were calculated and compared with their excitation spectra. Eu(3+) and Tb(3+) ions doped into LnCOB show efficient luminescence under VUV and UV irradiation. In this system, Ce(3+) ions do not show efficient luminescence and quench the luminescence of Tb(3+) ions when Tb(3+) and Ce(3+) ions are co-doped into LnCOB. GdCOB doped with Dy(3+) shows yellowish white light under irradiation of 254 nm light for the reason that Gd ions transfer the energy from itself to Dy. Because of the existence of Gd, the samples of GdCOB:RE(3+) show higher excitation efficiency than LaCOB:RE(3+) and YCOB:RE(3+) around 188 nm, which indicates that the Gd(3+) ions have an effect on the host absorption and can transfer the excitation energy to the luminescent center such as Tb(3+), Dy(3+) and Eu(3+). (c) 2005 Elsevier B.V. All rights reserved.
学科主题	Optics
类目[WOS]	Optics
收录类别	SCI
WOS记录号	WOS:000235103600007
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225837]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Yang, HC,Li, CY,He, H,et al. VIV-UV excited luminescent properties of LnCa4O(BO3)3 : RE3+(Ln = Y, La, Gd; Re=Eu, Tb, Dy, Ce)[J]. JOURNAL OF LUMINESCENCE,2006,118(1):#REF!.
APA	Yang, HC.,Li, CY.,He, H.,Tao, Y.,Xu, JH.,...&徐建华.(2006).VIV-UV excited luminescent properties of LnCa4O(BO3)3 : RE3+(Ln = Y, La, Gd; Re=Eu, Tb, Dy, Ce).JOURNAL OF LUMINESCENCE,118(1),#REF!.
MLA	Yang, HC,et al."VIV-UV excited luminescent properties of LnCa4O(BO3)3 : RE3+(Ln = Y, La, Gd; Re=Eu, Tb, Dy, Ce)".JOURNAL OF LUMINESCENCE 118.1(2006):#REF!.