Abstract
The Mn2+, Yb3+, Er3+: ZnWO4 green phosphors are synthesized successfully through the high temperature solid state reaction method. The micro-structure and morphology have been investigated by means of XRD and EDS. The doped concentrations of Mn2+, Yb3+, Er3+ are measured by ICP. The absorption spectra and emission spectra with different doped concentrations of Mn2+ are presented to reveal the influence of Mn2+ on the green up-conversion performance. Excited with 970 nm LED, the up-conversion emission peak at 547 nm is obtained and the CIE spectra as well as the green light photo are also presented. The results indicate that the Mn2+ ions play the role of the luminescence adjustment in the up-conversion process, which can improve the up-conversion green emission intensity effectively. The luminescence adjustment mechanism of Mn2+ ions in Mn2+, Yb3+, Er3+: ZnWO4 green phosphors has been discussed. The crystal parameters of Dq, B and C are calculated to evaluate the energy level split effect.
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This study was funded by Natural Science Foundation of Fujian Province (Grant Number 2018J01587); Fujian Jiangxia University Project (JXZ2017001).
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Ren, H., Yang, F. Influence of Mn2+ on the up-conversion emission performance of Mn2+, Yb3+, Er3+: ZnWO4 green phosphors. J Mater Sci: Mater Electron 29, 15396–15403 (2018). https://doi.org/10.1007/s10854-018-9053-9
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DOI: https://doi.org/10.1007/s10854-018-9053-9