Molten salt synthesis and optical properties of Eu3+, Dy3+or Nd3+ doped NiNb2O6 columbite-type phosphors
| Autor: | Mete Kaan Ekmekçi, Mustafa İlhan, Murat Erdem, Ayhan Mergen, Ali Sadi Başak |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Process Chemistry and Technology Inorganic chemistry Doping Non-blocking I/O Analytical chemistry Phosphor engineering.material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Octahedron Materials Chemistry Ceramics and Composites engineering Orthorhombic crystal system Molten salt Luminescence Columbite |
| Zdroj: | Ceramics International. 41:9680-9685 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2015.04.036 |
| Popis: | Pure, Eu 3+ , Dy 3+ or Nd 3+ -doped NiNb 2 O 6 powders have been prepared by a molten salt synthesis method by using Li 2 SO 4 –Na 2 SO 4 salt mixture as a flux at relatively low temperatures as compared to the solid state reaction method. X-ray diffraction patterns of pure NiNb 2 O 6 samples indicated an orthorhombic single phase. For Eu 3+ -doped NiNb 2 O 6 samples, the luminescence of Eu 3+ was observed at 615 nm as red emission while Dy 3+ -doped NiNb 2 O 6 showed yellow emission at 577 nm and Nd 3+ doped sample exhibited a typical emission at 1064 nm varying with the Eu 3+ or Nd 3+ doping concentrations. These luminescence characteristics of the doped samples may be attributed to the energy transfer between rare earth ions and NiO 6 octahedral groups in the columbite structure. |
| Databáze: | OpenAIRE |
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