Abstract
Eu, Dy co-doped strontium aluminate nanophosphors were prepared by the combustion synthesis method. Their structure and morphology were investigated by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy. According to the XRD and the TEM analysis, the average crystallite size was found to be in the nanometer range. The phase structure of the prepared nanophosphor is consistent with a standard monoclinic phase with a space group P21. The prepared SrAl2O4:Eu2+, Dy3+ nanophosphor emitted green light with a peak at 510 nm showing blue shift, which is due to the reduction in the particle size. Two distinct peaks were observed in the ML intensity versus time curve. The two peaks in ML indicate the presence of charge transfer in an ML process.
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Acknowledgments
The corresponding author is very much thankful to the UGC, New Delhi for their financial support as a major research project sanctioned by letter no. F. No. 42-759/2013 (SR) dated 14/03/2013. He is also very much grateful to the UGC-DAE Consortium for Scientific Research, Indore (M.P.) for the TEM; SEM/EDX characterization, and also very much thankful to Dr. N. P. Lalla and Dr. D. M. Phase for their kind cooperation.
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Sahu, I.P., Bisen, D.P. & Sharma, R. UV excited green luminescence of SrAl2O4:Eu2+, Dy3+ nanophosphor. Res Chem Intermed 42, 2791–2804 (2016). https://doi.org/10.1007/s11164-015-2177-0
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DOI: https://doi.org/10.1007/s11164-015-2177-0