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Effect of the Sintering Process on the Structure, Colorimetric, Optical and Photoluminescence Properties of SrWO 4 Phosphor Powders
Journal of Electronic Materials ( IF 2.2 ) Pub Date : 2020-01-21 , DOI: 10.1007/s11664-020-07941-1
Shifa Wang , Huajing Gao , Yong Wang , Guangzhuang Sun , Xinxin Zhao , Hufeng Liu , Chaoli Chen , Liang Yang

Scheelite-type strontium tungstate (SrWO4) phosphor powders were successfully synthesized using strontium nitrate and tungstic acid as starting materials by a gamma-ray irradiation-assisted polyacrylamide gel route. The phase purity, structure, functional groups, surface morphology, chemical composition, colorimetric, optical and photoluminescence properties of SrWO4 phosphor powders were systematically studied by various testing instruments. The crystallite size of SrWO4 phosphor powders increases with the increasing of sintering temperature. The color, optical and photoluminescence properties of SrWO4 phosphor powders are strongly dependent on the sintering temperature, carbon chain and the distortion of tetrahedral [WO4] clusters. The fluorescence emission at (310 nm, 338 nm, 360 nm and 400 nm) and 465 nm can be ascribed to the new energy level formed by a carbon chain, amorphous SrWO4 or oxygen vacancy, and the distortion of tetrahedral [WO4] clusters, respectively.



中文翻译:

烧结工艺对SrWO 4荧光粉结构,比色,光学和光致发光性能的影响

以硝酸锶和钨酸为起始原料,通过γ射线辅助聚丙烯酰胺凝胶法成功合成了白钨矿型钨酸锶(SrWO 4)荧光粉。通过各种测试仪器系统地研究了SrWO 4荧光粉的相纯度,结构,官能团,表面形态,化学组成,比色,光学和光致发光性能。SrWO 4荧光粉的微晶尺寸随着烧结温度的升高而增大。SrWO 4荧光粉的颜色,光学和光致发光特性在很大程度上取决于烧结温度,碳链和四面体[WO4个]集群。在(310 nm,338 nm,360 nm和400 nm和465 nm)的荧光发射可以归因于由碳链,无定形SrWO 4或氧空位以及四面体[WO 4 ]畸变形成的新能级集群。

更新日期:2020-01-21
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