期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 117, 期 4, 页码 1777-1783出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-014-8827-z
关键词
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资金
- National Natural Science Foundation of China (NSFC) [51302059]
- Natural Science Foundation of Anhui Province [1208085QE99]
- Fundamental Research Funds for the Central Universities of HFUT [2011HGQC0992]
- Postdoctoral Science Foundation of Hefei University of Technology [103-035040]
- Natural Science Foundation of HFUT [GDBJ2009-001]
A novel phosphor, Mn4+ doped La2LiTaO6, was developed by solid-state reaction method. The luminescent spectra and emission efficiencies of La2LiTaO6:-Mn-x(4+) (x = 0.001, 0.003, 0.005 and 0.01) were discussed. The effects of co-doped charge compensation ions, M = Mg2+, Ca2+, Na+, were investigated, respectively. The excitation spectra indicated that La2LiTaO6:Mn4+ could be effectively excited by both NUV light and blue light. The emission spectra of the phosphor exhibit a broadband ranging from 670 to 720 nm with the maximum at about 709 nm in deep red region. The co-doping of Mg2+ could significantly improve the luminescent properties of La2LiTaO6:Mn4+. Thus, phosphor La2LiTaO6:-Mn4+, Mg2+ can serve as a key component to improve color rendering of blue-chip white-LEDs.
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