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- W2950670810 abstract "Abstract Nanocrystalline ZrO 2 :Dy 3+ were prepared by sol–gel and the structural and photoluminescence properties characterized. The crystallite size ranges from 20 to 50 nm and the crystalline phase is a mixture of tetragonal and monoclinic structure controlled by dopant concentration. Strong white light produced by the host emission band centered at ∼460 nm and two strong Dy 3+ emission bands, blue (488 nm) and yellow (580 nm), under direct excitation at 350 nm were observed. The highest efficiency was obtained for 0.5 mol% of Dy 3+ . Emission is explained in terms of high asymmetry of the host suggesting that Dy 3+ are substituted mainly into Zr 4+ lattice sites at the crystallite surface. Luminescence quenching is explained in terms of cross-relaxation of intermediate Dy 3+ levels." @default.
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- W2950670810 date "2008-04-15" @default.
- W2950670810 modified "2023-09-23" @default.
- W2950670810 title "ChemInform Abstract: Efficient Photoluminescence of Dy3+at Low Concentrations in Nanocrystalline ZrO2." @default.
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- W2950670810 doi "https://doi.org/10.1002/chin.200816006" @default.
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