Alumina (Al2O3) powders doped with Er3+, Yb3+ and Zn2+ ions have been prepared by a low-temperature combustion synthesis technique. The phase purity and crystalline structure of the combustion products are confirmed by powder X-ray diffraction. An efficient frequency upconversion in the visible region and the emission in the infrared (IR) region respectively corresponding to the H-2(11/2), S-4(3/2)-> I-4(15/2), F-4(9/2)-> I-4(15/2) and I-4(13/2)-> I-4(15/2) transitions upon direct excitation with a CW laser lasing at similar to 980 nm are discussed. The enhancement observed in the intensity of the upconversion emission bands in the visible region and the emission band in the IR region due to the presence of Yb3+ and Zn2+ in Er3+:Al2O3 powders is reported and explained in detail.
机构:
Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
Zhejiang Normal Univ, Zhejiang Key Lab React Chem Solid Surfaces, Inst Phys Chem, Jinhua 321004, Peoples R ChinaZhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
Guo, Hai
Qiao, Yan Min
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机构:
Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R ChinaZhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
机构:
Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
Zhejiang Normal Univ, Zhejiang Key Lab React Chem Solid Surfaces, Inst Phys Chem, Jinhua 321004, Peoples R ChinaZhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
Guo, Hai
Qiao, Yan Min
论文数: 0引用数: 0
h-index: 0
机构:
Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R ChinaZhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China