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Luminescence properties of europium-terbium double activated calcium tungstate phosphor

机译：-double双活化钨酸钙磷光体的发光特性

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摘要

Double incorporation of Eu~(3+) and Tb~(3+) ions into a CaWO_4 crystalline lattice modifies the luminescence spectrum due to the formation of new emission centers. Depending on the activators concentration and nature, as well as on the interaction between the activators themselves, the luminescence color can be varied within the entire range of the visible spectrum. Variable luminescence was obtained when CaWO_4:Eu,Tb phosphors with 0-5 mol% activator ions were exposed to relatively low excitation energies as UV (365 and 254 nm). Under high energy excitation such as VUV (147 nm) radiation or electron beam, white light has been observed. This material with controlled properties seems to be promising for the applications in fluorescent lamps, colored lightning for advertisement industries, and other optoelectronic devices.
机译：由于形成新的发射中心，将Eu〜（3+）和Tb〜（3+）离子双重掺入CaWO_4晶格会改变发光光谱。取决于活化剂的浓度和性质以及活化剂自身之间的相互作用，发光颜色可以在可见光谱的整个范围内变化。当具有0-5 mol％活化剂离子的CaWO_4：Eu，Tb荧光粉暴露于相对较低的激发能（如UV（365和254 nm））时，获得可变的发光。在高能激发下，例如VUV（147 nm）辐射或电子束，已观察到白光。具有受控特性的这种材料似乎有望用于荧光灯，广告行业的彩色闪电以及其他光电设备中。

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