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A novel Bi3+ activated Ca4ZrGe3O12 phosphor was synthesized and the photoluminescence properties were investigated. Ca4ZrGe3O12:Bi3+ could be efficiently excited in the wavelength range of 320–430 nm, and exhibit a broad emission band (400–520 nm) with a peak at 435 nm corresponding to the 3P1–1S0 transition of Bi3+. Due to the energy transfer between Bi3+ ions, the concentration quenching in the...
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