期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 16, 期 11, 页码 11173-11179出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2016.13474
关键词
Microwave Hydrothermal; Microcrystal; Photonic; Upconversion Luminescence
类别
资金
- Global Research Lab. Program of the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology (MEST) of Korea [2010-00339]
BaMoO4, co-doped with Er3+, Yb3+ and K+, microcrystals were synthesized by the microwave hydrothermal process. The crystal structure and particle morphology were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The XRD pattern revealed the tetragonal scheelite structure of BaMoO4. In addition, octahedron microcrystals around 0.5-2 mu m were found by SEM analysis. Compositional analysis and the chemical states of the samples were analyzed by X-ray photoelectron spectroscopy (XPS). UV-Vis diffuse reflectance spectra and luminescence properties were also analyzed by UV-Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. Two strong green emission peaks (526 nm and 554 nm) and one weak red emission peak (661 nm) were observed, which are related to the H-2(11/2) -> I-4(15/2), S-4(3/2) -> I-4(15/2) and F-4(9/2) -> I-4(15/2) transitions of the Er3+ ions, respectively, under 980 nm (CW) laser diode excitation. The green upconversion luminescence intensity was enhanced two times with the KCl addition.
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