Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 16, Issue 4, Pages 3973-3976Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2016.11806
Keywords
Phosphor; Photoluminescence; Phosphate
Categories
Funding
- Fundamental Research Funds for the Central Universities [GK201402015]
- National Natural Science Foundation of China [21302118]
- Fundamental Doctoral Fund of Ministry of Education of China [20130202120015]
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Novel warm-white emitting phosphors CaIn2O4:Dy3+ co-doped with Gd3+, Zn2+, or Al3+ ions were prepared by solid state reaction. In this paper, a strategy of co-doping with different ions was used with the aim of affecting the luminescence properties of CaIn2O4:0.6%Dy3+ under NUV excitation. The luminescence intensities of CaIn2O4:0.6%Dy3+ were enhanced by 0.2% Gd3+ or 0.2% Zn2+ ions co-doping under 367 nm excitation, but lowered by co-doping with 0.2% Al3+ ions. Furthermore, the chromaticity coordinates of CaIn2O4:0.6%Dy3+ can be tuned from the cold-white region to warmwhite region with Gd3+ or Zn2+ ions co-doping. These findings show that CaIn2O4:0.6%Dy3+ , 0.2% Gd3+, and CaIn2O4:0.6%Dy3+, 0.2% Zn-2+ have potential application value as new warm-white LED phosphors.
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