Luminescence Study of Red Light Emitting Y2O3:Sm3+ Nanophosphors and Enhancement by Co-doping with Gadolinium oxide
Vini.K1, H.Padmakumar2, K.M.Nissamudeen3
1Vini.K, Department of Physics, School of Pure and Applied Physics, Kannur University, Payyanur, India.
2H. Padmakumar, Department of Physics, VTM NSS College, Dhanuvachapuram- Thiruvananthapuram, India.
3K.M. Nissamudeen*, Department of Physics, School of Pure and Applied Physics, Kannur University, Payyanur, India.
Manuscript received on February 06, 2021. | Revised Manuscript received on February 15, 2021. | Manuscript published on March 30, 2021. | PP: 60-70 | Volume-9 Issue-6, March 2021. | Retrieval Number: 100.1/ijrte.F5363039621 | DOI: 10.35940/ijrte.F5363.039621
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Abstract: This work presents the optical and structural properties of samarium oxide doped and gadolinium oxide co-doped yttrium oxide nanophosphors prepared by Combustion method. The photoluminescence emission intensity was maximum for 2wt% Sm3+ doped Y2O3 powders, that results 4G5/2 -6H7/2 transition within Samarium, emits red light at 608 nm under the excitation of 260 nm. In the case of co-dopant, maximum intensity is obtained for 3wt% Gd3+ under the excitation of 255 nm.The Y:Sm:Gd exhibit luminescence intensity of 4.21 times more than that of Y:Sm nanophosphors. These results indicate that the prepared nanophosphors can be used in optoelectronic devices.
Keywords: Bandgap, Co-doping, Energy transfer, Nanophosphor.