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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)
Corresponding AuthorSu, Q (reprint author), Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China.
AbstractCalcium 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.
Keywordcalcium lanthanide oxyborate rare-earth ions VUV luminescence
Subject AreaOptics
Indexed BySCI ; ADS
WOS SubjectOptics
WOS IDWOS:000235103600007
ADS Bibcode2006JLum..118...61Y
ADS URLhttps://ui.adsabs.harvard.edu/abs/2006JLum..118...61Y
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2006JLum..118...61Y/citations
Citation statistics
Cited Times:25 [ADS]
Document Type期刊论文
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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!.
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