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Tunable luminescence from Eu3+ and Ce3+ doped/co-doped color tunable Na4Ca(PO3)6 phosphors for white LEDs and solar cell applications

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Abstract

In recent years, the invention of white light by combining red, green and blue (RGB) phosphors with near-ultraviolet (NUV) chips has been extensively studied. In this study, a series of Na4Ca(PO3)6 (NCPO) phosphors doped and co-doped with Eu3+, Ce3+ were synthesized using solid state diffusion method at 600 °C. In the present work, the phase purity, crystalline nature, particle size, elemental composition, vibrational stretching and bending, thermal stability, luminescence behavior and IV characteristics of the synthesized samples have been analyzed. Luminescent spectra of obtained sample reveal that the samples are excited under Ultraviolet (UV)/near UV light and exhibits blue, orange and red color emission. The CIE chromaticity coordinates are found in the white color region, confirming that the synthesized phosphor produces white light. In addition, the synthesized NCPO phosphor was coated with a commercial silicon solar cell and it was found that silicon-based solar cell efficiency increased around 14.04% and 13.5% under the solar simulator and direct sunlight, respectively. Present study reveals that the synthesized phosphors have a suitable ability to serve as down-converted phosphors for white LEDs and solar cell applications.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

One of the authors Yatish R. Parauha is thankful to Department of Science and Technology (DST), India for financial support through INSPIRE fellowship (INSPIRE Code – IF180284). One more authors SJD is thankful to Department of Science and Technology (DST), India (Nano Mission) (Sanction Project Ref. No. DST/NM/NS/2018/38(G), dt.16/01/2019) for financial assistance.

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Authors and Affiliations

  1. Department of Physics, H.P.T. Arts and R.Y.K. Science College, Nashik, 422005, India

    Dheeraj J. Dhiman & Ashish B. Chourasia

  2. Department of Physics, R.T.M. Nagpur University, Nagpur, 440033, India

    Yatish R. Parauha & S. J. Dhoble

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  1. Dheeraj J. Dhiman
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  2. Yatish R. Parauha
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  3. Ashish B. Chourasia
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  4. S. J. Dhoble
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Contributions

DJD: Methodology, Investigation, Validation, Writing. YRP: Conceptualization, Investigation, Writing—original draft. ABC: Investigation, Validation, Writing—review & editing. SJD: Writing—review & editing. HCS: Supervision, Writing—review & editing, Funding acquisition, Resources.

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Correspondence to S. J. Dhoble.

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Dhiman, D.J., Parauha, Y.R., Chourasia, A.B. et al. Tunable luminescence from Eu3+ and Ce3+ doped/co-doped color tunable Na4Ca(PO3)6 phosphors for white LEDs and solar cell applications. J Mater Sci: Mater Electron 33, 11106–11123 (2022). https://doi.org/10.1007/s10854-022-08087-y

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