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
Rok vydání: 2017
Předmět:
Zdroj: Key Engineering Materials. 727:618-622
ISSN: 1662-9795
DOI: 10.4028/www.scientific.net/kem.727.618
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