Combustion Synthesis of Eu3+-Activated Y2Hf7O17 Powders
Abstract:Eu3+ doped-Y2Hf7O17 nanopowders were synthesized by the chemical self-combustion method at low temperature. X-ray diffraction, transmission electron microscopy, and scanning electron microscopy were employed to analyze the phase composition and the characteristics of the nanopowders. The excitation and emission spectra were analyzed with a fluorescence photometer. Results show that nanoscale powders calcined at 800 °C have good luminescent properties. There are two peaks in the emission spectra. One is at 595 nm, and the other is at 614 nm. Analysis of X-ray diffraction and photoluminescence spectra reveals that Y2Hf7O17 is cubic phase. The sample doped with 14 mol% Eu3+ has the maximum luminescent intensity.
Document Type: Research Article
Publication date: March 1, 2010
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