Gd3+ doped Y2SiO5 powders were prepared by combustion synthesis method. The photoluminescence of as prepared and annealed sample was investigated under UV excitation. Under 254 nm excitation, the phosphor showed main emission peak in UV region at 316 nm attributed transition of Gd3+. According to the relative emission intensity of the sample with different Gd3+ concentration, the optimal Gd3+ substitution for Gd3+ was obtained at 5 mol%. The excitation spectra have peaks at 249 nm, 257 nm and 275 nm. The peak at 257 nm is the intense one and attributed to the charge transfer transition of Gd-O. Mechanism of the emission process is also discussed.
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The author express their sincere gratitude to the DST-SERB, Government of India (PDF/2017/000095) for giving me financial support under the national post- doctoral fellowship scheme. The author also thankful to Bhilai institute of technology for providing lab facility for synthesis process.
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Upadhyay, K., Thomas, S., Tamrakar, R.K. et al. Investigation of photoluminescence behavior of Gd3+ doped Y2SiO5 phosphor prepared by combustion synthesis method. Chem. Pap. (2021). https://doi.org/10.1007/s11696-021-01551-9
- Optical materials
- Photoluminescence spectroscopy
- Y2SiO5 powder