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NIR to visible upconversion in Er/Yb co-doped CaYAl3O7 phosphor obtained by solution combustion process |
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| Authors: | Vijay Singh,Vineet Kumar Rai,Jö rg Nordmann |
| Affiliation: | a Physical Chemistry, Institute for Pure and Applied Chemistry and Center of Interface Science, University of Oldenburg, 26129 Oldenburg, Germany b Department of Inorganic Chemistry I-Materials Research, Institute of Chemistry, University of Osnabrueck, Barbarastrabe 7, 49069 Osnabrueck, Germany c Department of Applied Physics, Indian School of Mines, Dhanbad-826004, Jharkhand, India |
| Abstract: | Using the combustion synthesis, CaYAl3O7:Er3+ phosphor powders co-doped with Yb3+ have been prepared at low temperatures (550 °C) in a few minutes. Formation of the compound was confirmed by X-ray powder diffraction. Near-infrared to visible upconversion fluorescence emission in the Er3+ doped CaYAl3O7 phosphor powder has been observed. The effect of co-doping with triply ionized ytterbium in the CaYAl3O7:Er3+ phosphor has been studied and the process involved is discussed. |
| Keywords: | CaYAl3O7 Combustion Up-conversion Er3+ Yb3+ |
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