Paper Title:
Synthesis of Sr2Si5N8:Eu2+ Phosphor for Enhanced Red Emission
  Abstract

For removing impurities to improve luminescence properties, Eu2+- activated Sr2Si5N8 red phosphor for white light-emitting diodes (LEDs) was prepared by multiple heat-treatment synthesis which includes carbothermal reduction and nitridation. The X-ray diffraction (XRD) patterns were showed the standard single phase of Sr2Si5N8. With an optimized amount of Eu2+ (2 at. %) dopant, the broad excitation band of Sr2Si5N8:Eu2+ indicated that the phosphor was suitable for application of white LEDs with UV or blue chip, and red emission peak at 628 nm in spectra originating from the 4f65d1→4f7 transition of Eu2+ ion. After third heating process, luminescence properties of the obtained phosphor were improved obviously and higher than commercial YAG:Ce3+ phosphor.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
2705-2709
DOI
10.4028/www.scientific.net/AMR.233-235.2705
Citation
V. D. Luong, W. T. Zhang, H. R. Lee, "Synthesis of Sr2Si5N8:Eu2+ Phosphor for Enhanced Red Emission", Advanced Materials Research, Vols. 233-235, pp. 2705-2709, 2011
Online since
May 2011
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$32.00
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