Abstract
The Yb3+ doped Gd2O3 phosphors have been prepared by combustion route method. The structural, morphological, compositional and vibrational analysis of the Yb3+ doped Gd2O3 phosphor have been studied by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray and Fourier transform infrared spectroscopy. The results indicated that Yb3+ doped Gd2O3 phosphor synthesized by combustion had particle size ranging from 15 to 38 nm, for the different concentration of the Yb3+. The optical and luminescence properties of prepared phosphors had been studied by using 980 nm laser excitation. The effects of Yb3+ doping and annealing temperature on luminescence properties were also studied. Photoluminescence spectra showed that nanocrystals exhibited emission at near infrared region corresponding to different Stark labels of Yb3+ ions. The theoretical mechanism of luminescence was explored. The results indicate that this material may be suitable for infrared laser devices.
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Acknowledgments
We are very grateful to NIT Raipur for XRD characterization and also thankful to Dr.Mukul Gupta for his encouragement. I am very thankful to SAIF, IIT Bombay for other characterization such as SEM, TEM, FTIR and EDX. Very thankful to Dr. KVR Murthy M.S. University, Baroda (Chairman Luminescence Society of India) for PL study.
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Tamrakar, R.K., Bisen, D.P., Upadhyay, K. et al. Effect of synthesis annealing temperature & Yb3+ concentration on photoluminescence properties of monoclinic Gd2O3 phosphor. J Opt 44, 337–345 (2015). https://doi.org/10.1007/s12596-015-0307-0
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DOI: https://doi.org/10.1007/s12596-015-0307-0