Abstract
We present the SrAl2O4:Dy, SrAl2O4:Eu, & SrAl2O4:Dy3+Eu3+ phosphors and these samples were prepared by using the urea fuel combustion method at 550 °C. X-ray diffraction pattern indicates monoclinic structure and good crystallinity, Result of Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) spectra is exhibited synthesized compound were pure and overall good morphology. By the Brunauer–Emmett–Teller (BET) surface area analyzer, surface area was found 30.462 m2/g of SrAl2O4:Dy0.03Eu0.04. homogeneity, rotational, and vibrational properties were also investigated by FTIR and Raman spectroscopy. By the help of UV–visible spectroscopy band gap (~ 5 eV) was calculated. The photoluminescence properties were studied of SrAl2O4:Dyx, SrAl2O4:Eux, & SrAl2O4:Dy0.03Eux (x = 0.01 to 0.05) samples. In this order, we have found best SrAl2O4:Dy0.03Eu0.04 photoluminescent sample rather than other samples. The CIE-1931 color coordinate (0.3103, 0.3035), CCT (6914 K), CRI (94), and color purity (89.1%) were calculated of the SrAl2O4:Dy0.03Eu0.04 phosphor. Temperature-dependent photoluminescence spectra were measured of SrAl2O4:Dy0.03Eu0.04 phosphor by 395 nm excitation wavelength. Thermoluminescence glow curve were measured of synthesized phosphors and it is exposed to UV radiation (254 nm). Thermo-luminescence trap** parameters, activation energy and average frequency factor were calculated by Chens peak shape method. The obtained SrAl2O4Eu0.05Dy0.04 is fine phosphor and it has good PL, TL properties due to perfect do** concentration of Dy and Eu, higher elemental purity and perfect crystalline morphology. Therefore, SrAl2O4-based phosphor activated by Dy and Eu metals may be used for future prospective WLEDs applications.
Highlights
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1.
First time SrAl2O4:Dy3 + Eu3 + nano phosphor synthesis by urea fuel combustion route.
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2.
Crystallinity, Particle Size, morphology, and Surface area estimated by XRD, SEM, and BET.
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3.
Band gap of the SrAl2O4:Dy0.03Eu0.04 phosphor was found ~ 5 eV electron volt.
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4.
PL, Temperature dependent PL spectra, and Long-lasting decay curve were also analysed.
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5.
Glow peak parameter, TL activation energy, and frequency factor were calculated by Chens-equation.
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Data availability
The authors states that analysed and relevant data of synthesized materials, which are including and described in the manuscript will be freely available to researchers and scientists who are working purpose of research and social welfare.
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Acknowledgements
Corresponding author (Aksh Kumar Verma) is grateful to UGC-DSKPDF, Govt. of India for the post-doctoral fellowship (No. F.4-2/2006(BSR)/PH/20-21/0067).
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A.K. Conceptualization, synthesized all the samples, Investigation, designed the whole research, collected experimental data, Data plotting, writing of the manuscript, review, editing and formatting corresponding to the journals. D.S., P.B., C.K., and. P.G. help during experiment and writing manuscript. D.P.B, N.M., and I.P.S help and proposed many good suggestions.
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Verma, A., Sahu, D., Bisen, D.P. et al. Achieving structural, photoluminescence, temperature dependent photoluminescence and thermo-luminescence properties of SrAl2O4:Dy3+Eu3+ phosphor for WLED application. emergent mater. (2024). https://doi.org/10.1007/s42247-024-00773-3
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DOI: https://doi.org/10.1007/s42247-024-00773-3