Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 30, Pages 15183-15189Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm32733c
Keywords
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Funding
- National Natural Science Foundations of China [51002146, 41172053]
- Ph.D. Programs Foundation of Ministry of Education of China [20090022120002]
- Fundamental Research Funds for the Central Universities [2010ZY35, 2011YYL131]
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences [RERU2011014]
- National Science Council of Taiwan [NSC 97-2113-M-002-012-MY3, NSC 97-3114-M-002-005]
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A novel green-emitting phosphor Ca2Al3O6F:Eu2+ was synthesized and its photoluminescence (PL) properties were investigated for application in white light-emitting diodes (w-LEDs). This phosphor shows good absorption ranging from the ultraviolet to the blue region and a broad green emission band centered at 502 nm. The concentration quenching mechanism and fluorescence lifetime of Eu2+ emission in the Ca2Al3O6F:Eu2+ phosphors have been investigated. The key parameters for the fabrication of w-LED lamps, such as the temperature-dependent photoluminescence, microstructure and morphology, CIE value and quantum efficiency of Ca2Al3O6F:Eu2+ phosphors, have also been studied. The above results indicate that Ca2Al3O6F:Eu2+ is a good candidate as a green component for near UV-excited w-LEDs.
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