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Synthesis and photoluminescence properties of Sm3+ doped La2O3 nanoparticles

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Abstract

Samarium-doped La2O3 nanocrystalline powder annealed at different temperatures has been synthesized by a very cost-effective chemical precipitation method. X-ray diffraction, transmission electron microscope, energy-dispersive X-ray (EDAX) attached to scanning electron microscope and photoluminescence spectroscopy (PL) were used to analyse the prepared nanocrystals. Samples were heated at 600 °C, 700 °C and 800 °C to increase crystallinity and observe the particle size effect on the luminescence property. The PL intensity of Sm3+ increases with heating from 600 to 800 °C. This is attributed to the increase of Sm3+ occupancy in the La3+ lattice sites and also the extent of the reduction in the non-radiative transition with the improvement of crystallinity. Emission intensity is found to be maximum at 1 at.% Sm3+ doped sample for all heating temperatures. The present material might be a promising phosphor for white light LED application.

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Acknowledgements

The authors thank and acknowledge the National Institute of Technology (NIT), Manipur, India, for providing PL facility and SAIF, NEHU, Shillong, Meghalaya, India, for providing TEM measurement.

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Authors and Affiliations

  1. Department of Physics, Manipur University, Imphal, Manipur, 795003, India

    Konsam Reenabati Devi & Shougaijam Dorendrajit Singh

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  1. Konsam Reenabati Devi
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  2. Shougaijam Dorendrajit Singh
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Correspondence to Konsam Reenabati Devi.

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Devi, K.R., Singh, S.D. Synthesis and photoluminescence properties of Sm3+ doped La2O3 nanoparticles. Indian J Phys (2023). https://doi.org/10.1007/s12648-023-03031-0

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