高等学校化学学报

高等学校化学学报

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一类新的红色荧光粉MY2S4∶Er3+(M＝Sr2+, Ba2+)的合成与表征

廉世勋, 田科明, 尹笃林, 朱爱玲, 刘利民   

  1. 湖南师范大学化学化工学院, 长沙 410081
  • 收稿日期:2007-01-02 修回日期:1900-01-01 出版日期:2007-06-10 发布日期:2007-06-10
  • 通讯作者: 廉世勋

Synthesis and Characterization of A Novel Red Phosphor MY2S4∶Er3+(M＝Sr2+, Ba2+)

LIAN Shi-Xun*, TIAN Ke-Ming, YIN Du-Lin, ZHU Ai-Ling, LIU Li-Min   

  1. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
  • Received:2007-01-02 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
  • Contact: LIAN Shi-Xun

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摘要： 采用碳酸盐前驱体法制备碱土-稀土前驱体, 然后用CS2硫化前驱体合成MY2S4, 并发现Er3+激活的MY2S4∶Er3+(M＝Sr2+, Ba2+)是一类新的红色荧光粉, 有良好的应用前景.

关键词: 碱土-稀土硫化物, 铒离子, 红色荧光粉, 单色性

Abstract: Carbonate coprecipitate precursors were prepared by mixed nitrate solutions containing M2+(M2+＝Sr2+, Ba2+), Y3+ and Er3+ as the cation sources and (NH4)2CO3 as the precipitator. MY2S4∶Er3+ phosphors were synthesized by calcining the carbonate precursors with CS2 as the sulfurization reagent at 1050 ℃ for 4 h. XRD patterns show that the synthesized SrY2S4 and BaY2S4 crystalline powders possess the orthorhombic [CaFe2O4]-type structure. Photoluminescent measurements indicate that there were mainly red emitting(4F9/2→4I15/2) and green emitting(2H11/2→4I15/2 and 4S3/2→4I15/2) of Er3+ in the SrY2S4 while there was only red emitting(4F9/2→4I15/2) in BaY2S4∶Er3+. BaY2S4∶Er3+ is considered as a novel red phosphor candidate with a high monochromaticity.

Key words: Alkaline-earth rare-earth sulfide, Erbium ion, Red phosphor, Monochromaticity

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