Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (1): 26.

• Articles • Previous Articles     Next Articles

Synthesis and Photoluminescence of a Novel Full-color Emitting Phosphor NaCaPO4∶Dy3+

LUO Zhi-Tao, WANG Yu-Hua*, LI Ye-Zhou   

  1. Institute of Functional and Environmental Materials, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2009-01-17 Online:2010-01-10 Published:2010-01-10
  • Contact: WANG Yu-Hua. E-mail: wyh@lzu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 10874061)、广东省产学研项目(批准号: 0712226100023)和高等学校博士学科点专项科研基金(批准号: 200807300010)资助.

Abstract:

A series of single-phase full color phosphors, NaCaPO4∶Dy3+ was prepared using conventio-nal solid state reaction. The luminescent properties were studied under ultraviolet(UV) and vacuum ultraviolet(VUV) excitation. The UV excitation spectra reveal that the samples have a series of peaks at around 250—500 nm, with the highest peak at around 350 nm. The samples can absorb the emission of ultraviolet photons and emit visible light efficaciously. The VUV excitation spectra of the samples reveal that there are absorption bands at VUV region. The samples can absorb the vacuum ultraviolet photons and translate to visible light efficaciously. All the chromaticity coordinates of the samples are in the white region under both UV and VUV excitation. It can be predicted that this novel material can be applied both in LEDs and in mercury-free fluorescent lamp.

Key words: Phosphor; Phosphate; Uitraviolet spectrum; Vacuum ultraviolet spectrum; Light emitting diode; Mercury-free fluorescent lamp

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