| 1 | Luminescence investigation of Dy2O2S and Dy2O2SO4 obtained by thermal decomposition of sulfate hydrate显示文摘The yellow emitting dysprosium oxysulfide(Dy_2O_2S) and dysprosium oxysulfate(Dy_2O_2SO_4) compounds were prepared from the thermal decomposition of hydrated dysprosium sulphate. The materials were characterized by using thermogravimetry(TG/DTG), X-ray powder diffraction(XRD), Fourier transform infrared(FTIR) and Raman spectroscopies. The thermal stability temperatures at around 1151 and 1313 K were determined for the Dy2O2 S and Dy_2O_2SO_4 materials, respectively. The photoluminescence properties of the dysprosium oxysulfide were investigated, showing narrow emission bands assigned to the ~4F_(9/2)→6H_J intraconfigurational transitions of the Dy^(3+) ion. The yellow emission color of this phosphor suggests that the Dy_2O_2S is a promising material for applications in LEDs. | R.V.Rodngues L.Marciniak L.U.Khan J.R.Matos H.F.Brito W.Strek | 2016 | Journal of Rare Earths2016，34，8： | 1 |
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