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Journal of Inorganic Materials

Journal of Inorganic Materials >

2009 , Vol. 24 >Issue 5: 1069 - 1072

DOI: https://doi.org/10.3724/SP.J.1077.2009.01069

Research Paper

Luminescence Characteristics of Dy3+ Activated LiCaBO3 Phosphor

  • WANG Zhi-Jun ,
  • LI Pan-Lai ,
  • YANG Zhi-Ping ,
  • GUO Qing-Lin
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  • (College of Physics Science & Technology, Hebei University, Baoding 071002, China)

Received date: 2009-02-10

  Revised date: 2009-03-25

  Online published: 2009-09-20

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Abstract

LiCaBO3∶Dy3+ phosphor was synthesized by solid-state method. LiCaBO3∶Dy3+ phosphor shows several bands peaking at 484, 577 and 668nm. Monitoring at 577nm peak, the excitation spectrum has several bands peaking at 331, 368, 397, 433, 462 and 478nm. The emission spectrum and luminescence intensity of LiCaBO3∶Dy3+ phosphor were investigated by varying Dy3+ concentration. The result shows that the ratio (Y/B) of yellow emission (577nm) to blue emission (484nm) increases with increasing Dy3+ concentration. Moreover, the luminescence intensity firstly increases and then decreases with increasing Dy3+ concentration, and reaches the maximum at 3.00mol% Dy3+. And the concentration quenching mechanism is the d-d interaction by Dexter theory. The emission intensity of LiCaBO3∶Dy3+ phosphor is enhanced with doping Li+, Na+ or K+. The InGaNbased LiCaBO3∶Dy3+ shows a nice white-emitting, and the CIE chromaticity is (x=0.3001, y=0.3152).

Key words： white LED; LiCaBO3; Dy3+; luminescence characteristics

Cite this article

WANG Zhi-Jun , LI Pan-Lai , YANG Zhi-Ping , GUO Qing-Lin . Luminescence Characteristics of Dy3+ Activated LiCaBO3 Phosphor[J]. Journal of Inorganic Materials, 2009 , 24(5) : 1069 -1072 . DOI: 10.3724/SP.J.1077.2009.01069

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