Journal
JOURNAL OF LUMINESCENCE
Volume 143, Issue -, Pages 215-218Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2013.05.008
Keywords
Orthosilicate; Phosphors; Cross-relaxation; Energy transfer
Categories
Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0010756]
- National Research Foundation of Korea [2011-0010756] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Luminescent materials composed of Ba9-3m/2TbmY2Si6O24 (m=0.005-0.6) were prepared via a solid-state reaction. The dependence of the luminescent intensity of the Tb3+-doped orthosilicates on the Tb3+ content (m=0.005-0.06) is also investigated. The photoluminescence properties of Tb3+ in Ba9-3m/2TbmY2Si6O24 orthosilicate phosphors were elucidated. Using these phosphors, the desired CIE values including emissions throughout the blue, blue-green, and green regions of the spectra were achieved. Co-doping Ce3+ into the Tb3+-doped host structure enabled a high-energy charge-transfer from Ce3+ to Tb3+; accordingly, the Tb3+-Ce3+-doped green phosphors will be useful for applications involving white-light near-UV light-emitting-diodes. (C) 2013 Elsevier B.V. All rights reserved.
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