Up-Conversion Luminescence Properties of Ho³⁺ Doped and Yb³⁺/Ho³⁺ Co-Doped Y₂WO₆ Phosphors

Abstract:

In this article, Ho³⁺ doped and Yb³⁺/ Ho³⁺ co-doped Y₂WO₆ phosphors were successfully prepared via high temperature solid method. Their structures were investigated with X-ray diffraction, the up-conversion (UC) excitation from a 980 nm diode laser, and the developed phosphor shown two UC emission bands in the visible region 540 and 643 nm. Based on the result, the intensity of the frequency up-conversion emission was enhanced significantly through co-doping with Yb³⁺ ions in the Y₂WO₆: Ho³⁺ phosphor. The dependence of emission intensity on the pump power indicated that the up-conversion emission was a two-photon process. At last, the energy level diagrams was discussed. The results show that Y₂WO₆ is a promising host material for UC phosphors.

• Periodical: Key Engineering Materials (Volume 727)
• Pages: 618-622
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.727.618
• Online since: January 2017
• Authors: Xue Dong Gao, Deng Hui Xu, Yao Hui Zhu, Zai Fa Yang, Jiang Nan Du, Jia Yue Sun
• Keywords: Luminescence, Rare-Earth, Up-Conversion, Y₂WO₆

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