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Upconversion Luminescence Properties of Er3+–Yb3+-Codoped Titania–Zirconia Composites

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Er3+–Yb3+-codoped titania–zirconia composites were synthesized using a coprecipitation method with aqueous ammonia as the precipitator. Their crystal structures and upconversion luminescent properties were investigated using X-ray diffraction and photoluminescence spectra. The strong green and red upconversion emissions were observed. The ratio of green to red emission was changed with the variation of the host composition and dopant concentrations. The relevant mechanism was discussed.
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Document Type: Research Article

Affiliations: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China

Publication date: 2010-02-01

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