期刊
CERAMICS INTERNATIONAL
卷 42, 期 2, 页码 2204-2208出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.10.010
关键词
YAG:Ce3+; Phosphors; Gd3+; Co-doping; Luminescence properties
资金
- Human Resource Training Program for Regional Innovation and Creativity through the Ministry of Education
- National Research Foundation of Korea [NRF-2014H1C1A1066586]
- National Research Foundation of Korea [2014H1C1A1066586] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Y3Al5O12:Ce3+, Gd3+(YAG:Ce3+, Gd3+) phosphors were synthesized by a high-energy ball milling method. The X-ray diffraction (XRD) patterns showed their garnet structure, and several diffraction peaks shifted to lower angle side when co-doped with Gd3+ ions. Field emission scanning electron microscopy images exhibited irregular spherical particles of about 2 mu m size. The photoluminescence (PL) properties of the YAG:Ce3+, Gd3+ phosphors were studied as a function of the Gd3+ ion concentration. The PL excitation (PLE) spectra exhibited the broadband 4f-5d transition of Ce3+ ions centered at 439 nm. The PL spectra showed the intense 5d-4f transition of the Ce3+ ions with a band maximum at 542 nm, and this band maximum shifted to the longer wavelength region by increasing concentration of the Gd3+ ion. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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