Up-Conversion Luminescence Properties of Ho3+ Doped and Yb3+/Ho3+ Co-Doped Y2WO6 Phosphors
| Autor: | Jiang Nan Du, Deng Hui Xu, Xue Dong Gao, Jia Yue Sun, Yao Hui Zhu, Zai Fa Yang |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Materials science business.industry Mechanical Engineering Doping Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Laser 01 natural sciences Emission intensity 0104 chemical sciences Ion law.invention Mechanics of Materials law Optoelectronics General Materials Science 0210 nano-technology Luminescence business Diode |
| Zdroj: | Key Engineering Materials. 727:618-622 |
| ISSN: | 1662-9795 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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