Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 116, Issue -, Pages 556-561Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.07.076
Keywords
Luminescence; Optical property; Phosphor
Categories
Funding
- Northwest University, National Natural Science Foundation of China [50802031, 11274251]
- Foundation of Ministry of Education of China [20070487076]
- Natural Science Foundation of Hubei Province [2010CDB01607]
- Technology Foundation for Selected Overseas Chinese Scholar, Ministry of Personnel of China (excellent)
- Foundation of Key Laboratory of Photoelectric Technology in Shaanxi Province [12JS094]
- Foundation of Shaanxi Educational Committee [11JK0528]
- Open Foundation of Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaanxi Province [ZS11010, ZS12020]
- National Research Foundation of Korea [2012M3A9B8021805] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Ce3+ and Tb3+ co-doped Ba(2)Ln(BO3)(2)Cl (Ln = Y and Gd) green emitting phosphors were prepared by solid state reaction in reductive atmosphere. The emission and excitation spectra as well as luminescence decays were investigated, showing the occurrence of efficient energy transfer from Ce3+ to Tb3+ in this system. The phosphors exhibit both a blue emission from Ce3+ and a green emission from Tb3+ under near ultraviolet light excitation with 325-375 nm wavelength. Emission colors of phosphors could be tuned from deep blue through cyan to green by adjusting the Tb3+ concentrations. The energy transfer efficiency and emission intensity of Ba2Y(BO3)(2)CI:Ce3+, Tb3+ precede those of Ba2Gd(BO3)(2)Cl:Ce3+, Tb3+, and the sample Ba2Y(BO3)(2)Cl:0.03Ce(3+), 0.10Tb(3+) is the best candidate for n-UV LEDs. (C) 2013 Elsevier B.V. All rights reserved.
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