| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Preparation of Gd2O2S:Yb,Ho Phosphor via Thermolysis of Sulfur−Contained (Gd,Yb,Ho)[S2CN(C4H8)]3 Phen Complexes |
| ZHONG Hai-Yang, LUO Xi-Xian**, MA Lu-Bin, ZHANG Ming, XING Ming-Ming, FU Yao
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Department of Physics, Dalian Maritime University, Dalian 116026
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| Cite this article: |
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ZHONG Hai-Yang, LUO Xi-Xian, MA Lu-Bin et al 2011 Chin. Phys. Lett. 28 047805 |
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Abstract A novel handy single-source precursor method is adopted to prepare Gd2O2S:Yb,Ho up−conversion phosphors. Pure Gd2O2S:Yb0.06Ho0.02 phosphors are prepared via thermolysis of the air−stable ternary solid complexes RE[S2CN(C4H8)]3phen (RE=Gd, Yb, Ho) in a nitrogen atmosphere with certain amount of oxygen at 600–1100 °C. The as−prepared Gd2O2S:Yb0.06Ho0.02 exhibits a strong green up−conversion luminescence under 980 nm IR excitation. The intensity of the green emission component is 37.4 and 53.4 times more than that of the red and NIR emissions, respectively. It is indicated that the material is of excellent color purity. Under an IR excitation density of 34.75 mW/mm2 with a laser beam diameter of 1 mm, the material exhibits an up−conversion luminescence brightness of 43.68 Cd/m2.
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| Keywords:
78.55.Fv
78.55.Qr
78.55.Hx
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Received: 10 October 2010
Published: 29 March 2011
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| PACS: |
78.55.Fv
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(Solid alkali halides)
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78.55.Qr
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(Amorphous materials; glasses and other disordered solids)
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78.55.Hx
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(Other solid inorganic materials)
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