TY - JOUR
T1 - Enhanced luminescence of Sr Si2 O2 N2
T2 - Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions
AU - Liu, Ru Shi
AU - Liu, Yu Huan
AU - Bagkar, Nitin C.
AU - Hu, Shu Fen
N1 - Funding Information:
The authors would like to acknowledge the financial support from the National Science Council of Taiwan (Contract Nos. 95-2113-M-002-009 and 95-2112-M-003-125) and the Economic Affair of Taiwan (Contract No. 95-EC-17-A-07-S1-043).
PY - 2007
Y1 - 2007
N2 - The authors report here the enhanced luminescence properties of Sr Si2 O2 N2 doped with Eu and M (M=Ce, Dy, and Mn). The Eu and Eu, Mn-codoped powders were prepared by a solid state reaction at temperatures between 1400 and 1600 °C under H2 (25%) - N2 (75%) atmosphere. The Eu, M -codoped Sr1-x-y Si2 N2 O2 phosphors have the monoclinic structure with lattice parameters a∼15.6 Å, b∼16.2 Å, c∼9.4 Å, and Β∼91°. The phosphors can be efficiently excited in the UV to visible region, making them attractive as conversion phosphors for a light emitting diode application. A green-yellow emission was observed for Eu,M -codoped Sr1-x-y Si2 N2 O2. The addition of M in the Eu site in Sr Si2 O2 N2 remarkably enhances the luminescent intensity by the factor of 144%, 148%, and 168% for Ce, Dy, and Mn, respectively.
AB - The authors report here the enhanced luminescence properties of Sr Si2 O2 N2 doped with Eu and M (M=Ce, Dy, and Mn). The Eu and Eu, Mn-codoped powders were prepared by a solid state reaction at temperatures between 1400 and 1600 °C under H2 (25%) - N2 (75%) atmosphere. The Eu, M -codoped Sr1-x-y Si2 N2 O2 phosphors have the monoclinic structure with lattice parameters a∼15.6 Å, b∼16.2 Å, c∼9.4 Å, and Β∼91°. The phosphors can be efficiently excited in the UV to visible region, making them attractive as conversion phosphors for a light emitting diode application. A green-yellow emission was observed for Eu,M -codoped Sr1-x-y Si2 N2 O2. The addition of M in the Eu site in Sr Si2 O2 N2 remarkably enhances the luminescent intensity by the factor of 144%, 148%, and 168% for Ce, Dy, and Mn, respectively.
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U2 - 10.1063/1.2768916
DO - 10.1063/1.2768916
M3 - Article
AN - SCOPUS:34547850803
SN - 0003-6951
VL - 91
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 6
M1 - 061119
ER -