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Investigations On Structural & Luminescence Characteristics Of Sm3+Stimulated Bi2La4O9 Binary System For LEDs

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Abstract

The new-fangled red-emitting phosphor Sm3+: Bi2La4O9 via the simplistic solid-state route is Characterised by X-ray diffraction (XRD). The synthesised samples bear identify with the monoclinic unit cell of C2/m space group. The optical traits interpreted by the UV–visible analysis and spectrometric evaluations, as well estimates the decay lifetimes. The f-f traits of Sm3+ 408, 425, 480 and 491 nm impact the characteristic emission lines. Fine tuning the doping concentration of Sm3+ ions favours the sample phosphor to realize efficaciously tunable red colour. It is also inferred from the CIE coordinate chart that the single dopant Sm3+ with squat CCT and soaring colour clarity counts lies in the red region. The revelation of Bi2La4O9:Sm3+phosphors are nearly the same as the predetermined values of the Nichia corp red-light emitting diodes. The computed calculations of colour coordinates and the CCT of Sm3+ions observed to be below 3000k for warm light when excited by 491 nm wave length. This authenticate the Sm3+: Bi2La4O9 phosphor pertinently tunable candidate with the potential for efficient red display and solid state lighting appliances.

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Acknowledgements

The authors gratefully acknowledge the IIT Chennai and DST FIST (Theivanai Ammal College for Women-Autonomous, Villupuram) for characterization facilities.

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Authors and Affiliations

  1. Department of Physics, Theivanai Ammal College for Women (Autonomous), Villupuram, India

    G. Subalakshmi, V. Vimala, G. Tamizholi & K. Jothi

  2. Center for Radiation Environmental Science and Technology, Shiv Nadar University Chennai, Kalavakkam, India

    Rajesh Narayana Perumal

  3. Department of Physics, Government Arts & Science College, Manalmedu, India

    S. Vijayalakshmi

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  1. G. Subalakshmi
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  2. Rajesh Narayana Perumal
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  3. S. Vijayalakshmi
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Correspondence to G. Subalakshmi.

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Subalakshmi, G., Perumal, R.N., Vijayalakshmi, S. et al. Investigations On Structural & Luminescence Characteristics Of Sm3+Stimulated Bi2La4O9 Binary System For LEDs. J Opt (2024). https://doi.org/10.1007/s12596-024-01811-3

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