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Zn2+含量对Ca0.925-xZnxMoO4:Eu0.0753+红色荧光粉发光性能的影响

The Effect of Zn2+ Content on Luminescence Characteristics of Ca0.925-xZnxMoO4∶Eu0.0753+ Red-emitting Phosphors

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【作者】 王凤祥； 袁曦明；

【Author】 WANG Fengxiang1,2,3,YUAN Ximing3(1 The Center Laboratory of China Railway Resources Group,Langfang 065000;2 China Railway Geophysics Survey Co.Ltd, Langfang 065000;3 Faculty of Materials Science and Chemical Engineering,China University of Geosciences,Wuhan 430074)

【机构】 中铁资源集团中心实验室； 中铁物探勘察有限公司； 中国地质大学材料科学与化学工程学院；

【摘要】 采用溶胶-凝胶法制备了Ca0.925-xZnxMoO4∶Eu30+.075红色荧光粉,并对粉体的物相结构、发光性能、粒径方面进行研究。实验得出,适量的Zn2+取代Ca2+没有改变Ca0.925MoO4∶Eu30+.075的晶体结构,而且明显提高了Ca0.925-MoO4∶Eu30+.075的发光强度。同时,掺杂Zn2+可以使红色荧光粉Ca0.925-xZnxMoO4∶Eu30+.075的电荷吸收带发生红移,Zn2+的最佳掺杂量为7%(原子分数)。对Ca0.925MoO4∶Eu30+.075和Ca0.855Zn0.07MoO4∶Eu30+.075进行对比研究,得出Ca0.855Zn0.07MoO4∶Eu30+.075的粒径稍大,但是其发光性能优于Ca0.925MoO4∶Eu30+.075。

【Abstract】 A series of Ca0.925-xZnxMoO4∶Eu3+0.075 were synthesized by sol-gel method,the crystal phase structure,luminescent properties,grain diameter of red phosphors were investigated.It was concluded that,the replacement of Zn2+ to Ca2+ didn′t changed the phase structure of CaMoO4∶Eu3+,but increased its emission peak intensity.Moreover,there is a red shift about the charge absorption peak of Ca0.925-xZnxMoO4∶Eu3+0.075 due to the repalcement of Zn2+ to Ca2+.The optimum doping concentration of Zn2+ was 7at.%.By comparing Ca0.925MoO4∶Eu3+0.075 and Ca0.855Zn0.07-MoO4∶Eu3+0.075,it can be concluded that the luminescent properties of Ca0.855Zn0.07MoO4∶Eu3+0.075 is better while the particle size is a little bigger than Ca0.925MoO4∶Eu3+0.075.

【关键词】 钼酸盐； 红色荧光粉； 发光性能；
【Key words】 molybdate； red emitting phosphors； luminescent properties；
  • 【文献出处】 材料导报 ,Materials Review , 编辑部邮箱 ,2012年S2期
  • 【分类号】O482.31
  • 【被引频次】4
  • 【下载频次】93
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