| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1258855 | Journal of Rare Earths | 2016 | 6 Pages |
The yellow emitting dysprosium oxysulfide (Dy2O2S) and dysprosium oxysulfate (Dy2O2SO4) 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 Dy2O2S and Dy2O2SO4 materials, respectively. The photoluminescence properties of the dysprosium oxysulfide were investigated, showing narrow emission bands assigned to the 4F9/2→6HJ intraconfigurational transitions of the Dy3+ ion. The yellow emission color of this phosphor suggests that the Dy2O2S is a promising material for applications in LEDs.
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