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Title of Journal: Int J Miner Metall Mater

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Abbravation: International Journal of Minerals, Metallurgy, and Materials

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University of Science and Technology Beijing

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DOI

10.1016/0013-4694(81)92519-0

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ISSN

1869-103X

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Preparation and upconversion luminescence of YVOS

Authors: Yongming Zhang Yanhong Li Peng Li Guangyan Hong Yingning Yu
Publish Date: 2010/04/01
Volume: 17, Issue: 2, Pages: 225-228
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Abstract

YVO4Er3+ Yb3+ with varying Yb3+ concentrations were prepared by a precipitation method The results of Xray diffraction XRD show that all the samples have a tetragonal zircon structure the calculated average crystallite sizes are in the range of 14–22 nm The lattice constants and cell volume of the samples decrease slightly with the increase in Yb3+ concentration The upconversion luminescence spectra of all the samples were studied under 980 nm laser excitation The strong green emission is observed which is attributed to the 2H11/2 → 4I15/2 and 4S3/2→4I15/2 transitions of Er3+ and the red emission peaks in 650–675 nm can be ignored The emission intensity for the sample depends on the Yb3+ concentration These results reveal that the upconversion processes of YVO4Er3+ Yb3+ are related to the structure and the doping Yb3+ concentration of the sample

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