期刊
NANOSCALE RESEARCH LETTERS
卷 7, 期 -, 页码 -出版社
SPRINGEROPEN
DOI: 10.1186/1556-276X-7-556
关键词
Y2O3 particles; Luminescence; Urea homogeneous precipitation; Eu3+ and Dy3+ codoped
资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0010575]
- Korean government [2012R1A1B3001357]
- National Research Foundation of Korea [2010-0010575] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Rare-earth phosphors are commonly used in display panels, security printing, and fluorescent lamps, and have potential applications in lasers and bioimaging. In the present study, Eu3+- and Dy3+-codoped uniform-shaped Y2O3 submicron particles were prepared using the urea homogeneous precipitation method. The structure and morphology of the resulting particles were characterized by X-ray diffraction, field emission scanning electron microscope, and field emission transmission electron microscope, whereas their optical properties were monitored by photoluminescence spectroscopy. The room-temperature luminescence color emission of the synthesized particles can be tuned from red to yellow by switching the excitation wavelength from 254 to 350 nm. The luminescence intensities of red and yellow emissions could be altered by varying the dopant concentration. Strong quenching was observed at high Eu3+ and Dy3+ concentrations in the Y2O3 host lattice.
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