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. 2023 Jul 5;13(29):20217-20228.
doi: 10.1039/d3ra03199c. eCollection 2023 Jun 29.

Optimizing the luminescence efficiency of an europium (Eu3+) doped SrY2O4 phosphor for flexible display and lighting applications

Neeraj Verma  1 , Marta Michalska-Domańska  2 , Tirath Ram  1 , Jagjeet Kaur  1 , Abhishek Kumar Misra  1 , Vikas Dubey  3 , Neha Dubey  1 , Kanchan Tiwari  4 , M C Rao  5
Affiliations

Optimizing the luminescence efficiency of an europium (Eu3+) doped SrY2O4 phosphor for flexible display and lighting applications

Neeraj Verma et al. RSC Adv. .

Abstract

This research paper reports the synthesis and luminescence study of an Eu3+ activated SrY2O4 phosphor prepared by a modified solid-state reaction method with varying concentrations of Eu3+ ions (0.1-2.5 mol%). X-ray diffraction (XRD) revealed the orthorhombic structure and Fourier transform infrared spectroscopy (FTIR) methods were used to analyse the produced phosphors. Photoluminescence emission and excitation spectra were recorded for varying concentrations of Eu3+ ions, and an optimum concentration of 2.0 mol% was found to produce the highest intensity. Under 254 nm excitation the emission peaks were found to be at 580 nm, 590 nm, 611 nm and 619 nm, corresponding to transitions at 5D0 → 7F0, 5D0 → 7F1, and 5D0 → 7F2 respectively. Because of Eu3+ inherent luminosity, these emission peaks indicate radiative transitions between excited states of ions, making them useful for developing white light-emitting phosphors for optoelectronic and flexible display applications. The 1931 CIE (x, y) chromaticity coordinates were calculated from the photoluminescence emission spectra and found to be near white light emission, indicating the potential application of the prepared phosphor for light emitting diodes (white component). TL glow curve analysis was also performed for various concentrations of doping ions and UV exposure times, and a single broad peak was observed at 187 °C. Using the computerised glow curve deconvolution (CGCD) method, kinetic parameters were computed.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. (a) XRD pattern of SrY2O4:Eu3+ phosphor. (b) XRD pattern of SrY2O4:Eu3+phosphor for 0.2 mol%.
Fig. 2
Fig. 2. FTIR spectra of SrY2O4:Eu3+ phosphor (2.0 mol%).
Fig. 3
Fig. 3. SEM images of SrY2O4:Eu3+ (2.0 mol%) (a) ×1.5k 10 μm (b) ×3.5k 5 μm (c) ×7k 2 μm (d) ×10k 1 μm.
Fig. 4
Fig. 4. (a) EDX pattern of prepared phosphor Eu3+ (2.0 mol%) doped SrY2O4. (b) Quantitative EDX of Eu3+ doped SrY2O4 phosphor (2.0 mol%).
Fig. 5
Fig. 5. PL excitation spectra of SrY2O4:Eu3+ (2.0 mol%) phosphor.
Fig. 6
Fig. 6. PL emission spectra of SrY2O4:Eu3+ (0.1–2.5 mol%) phosphor.
Fig. 7
Fig. 7. CIE coordinate for SrY2O4:Eu3+ phosphor (0.1–2.5 mol%).
Fig. 8
Fig. 8. TL glow curve analysis of SrY2O4:Eu3+.
Fig. 9
Fig. 9. (a) SrY2O4:Eu3+ concentration vs. intensity. (b) Linear fit with a mean error bar of SrY2O4:Eu3+ for (0.1–2.5) mol%.
Fig. 10
Fig. 10. TL glow curve analysis of SrY2O4:Eu3+ for 0.2 mol%.
Fig. 11
Fig. 11. (a) SrY2O4:Eu3+ dose vs. intensity. (b) Linear fit with a mean error bar of SrY2O4:Eu3+ for (5–30 min) UV dose.
Fig. 12
Fig. 12. CGCD pattern of UV induced SrY2O4:Eu3+ doped phosphor for optimized UV dose and 0.2 mol% concentration.
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References

    1. Celikel D. C., Smart E-Textile Materials, in Advanced functional materials, ed. N. Tasaltin, P. S. Nnamchi and S. Saud, IntechOpen, London, 2020, pp. 1–16, 10.5772/intechopen.92439 - DOI
    1. Liu L. Xu W. Ding Y. Agarwal S. Greiner A. Duan G. A review of smart electrospunfibers toward textiles. Comput. Commun. 2020;22:100506. doi: 10.1016/j.coco.2020.100506. - DOI
    1. Ghahremani Honarvar M. Latifi M. Overview of wearable electronics and smart textiles. J. Text. Inst. 2017;108(4):631–652. doi: 10.1080/00405000.2016.1177870. - DOI
    1. Chen M. Ma Y. Song J. Lai C. F. Hu B. Smart clothing: connecting human with clouds and big data for sustainable health monitoring. Mob. Netw. Appl. 2016;21(5):825–845. doi: 10.1007/s11036-016-0745-1. - DOI
    1. Bratovcic A. Different applications of nanomaterials and their impact on the environment. Int. J. Mater. Sci. Eng. 2019;5(1):1–7. doi: 10.14445/23948884/IJMSE-V5I1P101. - DOI