Enhanced luminescence of Sr Si2 O2 N2: Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions

Ru Shi Liu*, Yu Huan Liu, Nitin C. Bagkar, Shu Fen Hu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

109 引文 斯高帕斯(Scopus)

摘要

The authors report here the enhanced luminescence properties of Sr Si2 O2 N2 doped with Eu and M (M=Ce, Dy, and Mn). The Eu and Eu, Mn-codoped powders were prepared by a solid state reaction at temperatures between 1400 and 1600 °C under H2 (25%) - N2 (75%) atmosphere. The Eu, M -codoped Sr1-x-y Si2 N2 O2 phosphors have the monoclinic structure with lattice parameters a∼15.6 Å, b∼16.2 Å, c∼9.4 Å, and Β∼91°. The phosphors can be efficiently excited in the UV to visible region, making them attractive as conversion phosphors for a light emitting diode application. A green-yellow emission was observed for Eu,M -codoped Sr1-x-y Si2 N2 O2. The addition of M in the Eu site in Sr Si2 O2 N2 remarkably enhances the luminescent intensity by the factor of 144%, 148%, and 168% for Ce, Dy, and Mn, respectively.

原文英語
文章編號061119
期刊Applied Physics Letters
91
發行號6
DOIs
出版狀態已發佈 - 2007

ASJC Scopus subject areas

  • 物理與天文學(雜項)

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