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Chinese Physics C> 2001, Vol. 25> Issue(S1) : 70-74 

VUV Luminescent Properties of Rare Earth Fluorides and Borates

  •  State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100039,China2 Institute of High Energy Physics,CAS,Beijing 100871,China

  • The quantum cutting effect was observed in Eu3+ doped hexagonal NaGdF4.Upon VUV excitation to the 6GJ level of Gd3+,two red photons are emitted by Eu3+ through an efficient two-step energy transfer process.The quantum efficiency of this material is about 160%.Cubic NaGdF4 contains considerable amount of oxygen impurity,so that the 4f-5d transition moves to lower energy(177nm),which fits the energy of the VUV photons from discharge of inert gas; the color purity of the emission of cubic NaGdF4 is also improved by oxygen doping.The photon cascade emission of Gd3+ ions was observed in GdBaB9O16.Under the 202 nm excitation,a red and a near infrared radiative transition from 6GJ states,6GJ→6IJ and 6GJ→6PJ occur followed by an ultraviolet emission of 6PJ→8S7/2.
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    [1] Wegh R T, Donker H, Meijerink A et al. Phys. Rev., 1997, B56 (21):138412 Srivastava A M, Beers W W. J. Lumin, 1997, 71:2853 Pappalardo R. J. Lumin, 1976,14:159.4 Sommerdijk J L, Bril A, de Jager A W. J. Lumin, 1974, 8:3415 Wegh Rene T, Donker Harry, Meijerink Andries et al. Science, 1999, 283:6636 Krupa J C, Mayolet A, Queffelec M. Ann. Chim. Sci. Mat., 1998, 23:4317 Veenis A W, Bril A, Philips J. Res，1978, 33:1248 XUN Xiu-Mei, FENG Shou-Hua, WANG Jun-Zuo et al. Chem.1997, 9:29669 Krupa J C, Queffelec M. J. Alloys Comps，1997, 250:28710 Szczurek T, Schlesinger M. Rare Earths Spectroscopy. Edited by B.Jezowska- Trebiatowska, J. Legendziewicz, W. Strek, Singapore, World Scientific, 1985, 30911 Schlesinger M, Szczurek T, Drake G W F. Solid State Commun., 1978, 28:16512 Noel Martin, Philippe Boutinaud, Rachid Mahiou et al, J. Mater. Chem., 1999, 9:12513GUO F Y, HUANG X H, YAO G Q. Chinese J. Inorg. Chem., 1995, 11:10914 YANG Z, LIN J H, SU M Z. Mater. Res. Bull., 2000, 35:2173

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YOU Fang-Tian, YANG Zhi, LU Pei-Chao, WANG Ying-Xia, LIN Jian-Hua and TAO Ye. VUV Luminescent Properties of Rare Earth Fluorides and Borates[J]. Chinese Physics C, 2001, 25(S1): 70-74.
YOU Fang-Tian, YANG Zhi, LU Pei-Chao, WANG Ying-Xia, LIN Jian-Hua and TAO Ye. VUV Luminescent Properties of Rare Earth Fluorides and Borates[J]. Chinese Physics C, 2001, 25(S1): 70-74. shu
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Received: 1900-01-01
Revised: 1900-01-01
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VUV Luminescent Properties of Rare Earth Fluorides and Borates

    Corresponding author: YOU Fang-Tian,
  • State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100039,China2 Institute of High Energy Physics,CAS,Beijing 100871,China
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 2001-06-22

Abstract: The quantum cutting effect was observed in Eu3+ doped hexagonal NaGdF4.Upon VUV excitation to the 6GJ level of Gd3+,two red photons are emitted by Eu3+ through an efficient two-step energy transfer process.The quantum efficiency of this material is about 160%.Cubic NaGdF4 contains considerable amount of oxygen impurity,so that the 4f-5d transition moves to lower energy(177nm),which fits the energy of the VUV photons from discharge of inert gas; the color purity of the emission of cubic NaGdF4 is also improved by oxygen doping.The photon cascade emission of Gd3+ ions was observed in GdBaB9O16.Under the 202 nm excitation,a red and a near infrared radiative transition from 6GJ states,6GJ→6IJ and 6GJ→6PJ occur followed by an ultraviolet emission of 6PJ→8S7/2.

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