Luminescence properties of Tm^(3+) /Yb^(3+) ,Er^(3+) /Yb^(3+) and Ho^(3+) /Yb^(3+) activated calcium tungstate

查看全文 作　　者：Z.Pisku[1]a;[1]K.Staninski;[1]S.Lis

机构地区：[1]Faculty of Chemistry,Adam Mickiewicz University

出　　处：《Journal of Rare Earths》索引2011年第29卷第12期,共4页

摘　　要：CaWO4 phosphor activated by the Tm3+/Yb3+,Er3+/Yb3+ and Ho3+/Yb3+ ions were synthesized by a traditional high-temperature solid-state method.The crystal structures and morphologies of the products were characterized by X-ray powders diffraction method(XRD) ,infrared spectra(FT-IR) and scanning electron microscopy(SEM) .The samples were found to show up-conversion luminescence properties.CaWO4 doped with Tm3+/Yb3+ showed blue luminescence characteristic of Tm(III) ion in the range of 460-485 nm,corresponding to the 1G4→3H6 electronic transition.CaWO4 doped with Er3+/Yb3+ showed strong green luminescence at 510-565 nm(2H11/2,4S3/2→4I15/2) and weak red luminescence at 640-685 nm(4F9/2→4I15/2) of Er(III) ion.CaWO4 doped with Ho3+/Yb3+ phosphor emitted green luminescence at 525-560 nm(5S2,5F4→5I8) and red luminescence at 630-670 nm(5F5→5I8) and at 730-770 nm(5S2,5F4→5I7) ,which is the characteristic of Ho(III) ion. 关键词：发光性能 TM 钨酸钙纳米荧光粉镱扫描电子显微镜 Er离子活化

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Luminescence properties of Tm^(3+) /Yb^(3+) ,Er^(3+) /Yb^(3+) and Ho^(3+) /Yb^(3+) activated calcium tungstate

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