Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (9): 1339.

• Articles • Previous Articles     Next Articles

The Crystal Structure and VUV Luminescent Property of the Rare Earth Borates

YANG Zhi1,2, REN Min1, LIN Jian-Hua1, SU Mian-Zeng1, TAO Ye3, WANG Wei3   

  1. 1. State Key Laboratoryof Rare Earth Materials Chemistryand Applications, Department of Materials Chemistry, Peking University, Beijing 100871, China;
    2. Department of Chemistry, Yunnan Normal University, Kunming 650092, China;
    3. Beijing Synchrotron Radiation Laboratory, Instituteof High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
  • Received:1999-08-05 Online:2000-09-24 Published:2000-09-24

Abstract: The VUVabsorption of rare earth borates depends strongly on the structure of the borate ions. It is proposed from the simple extended Hückel calculation that the excitation transition in the VUVrange is mainly from the B—O bonding orbital(HOMO) to the antibonding orbital(LUMO). The energy difference between the HOMOand LUMOdecreases in the sequence of BO45->B2O54->BO33->B3O99-, which accords with the VUVexperimental results.

Key words: Rare earth borates, VUV, Excitation spectra

CLC Number: 

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