Investigation of Boron-doping Effect on Photoluminescence Properties of CdNb2O6: Eu3+ Phosphors
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Pure, Eu3+ − doped and Eu3+,B3+ co-doped CdNb2O6 powders have been prepared by a molten salt synthesis method using Li2SO4/Na2SO4 salt mixture as a flux at a relatively low temperatures as compared to solid state reaction. X-ray diffraction patterns of pure CdNb2O6 samples indicated orthorhombic single phase. Photoluminescence investigations of CdNb2O6 samples showed a strong blue emission band centered at 460 nm. For Eu-doped CdNb2O6 samples, the luminescence of Eu3+ was observed with the host red emission varying with the Eu-doping concentrations. This PL characteristic of the doped samples may be attributed to the energy transfer between Eu3+ and niobate groups (NbO6). Boron incorporation has remarkably increased the luminescence of Eu3+-doped CdNb2O6.
KeywordsMolten salt process Luminescence Columbite cadmium niobate Boron effect
The authors would like to thanks to Marmara University Research Fund (BAPKO) under Project No. FEN-C-DRP-031210-0296 for supporting this research.
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