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- W3203883417 abstract "The undoped and Eu 3+ doped BaLaGa 3 O 7 ceramic phosphors have been prepared using solid state reaction technique. The structural studies have been done using X-ray Diffraction (XRD) and Fourier transform infra-red (FTIR) technique and the surface morphology analysis using Field emission scanning electron microscope (FESEM). The elemental analysis has been carried out using Energy Dispersive X-ray spectroscopy (EDX) and elemental mapping. XRD study reveals that all the prepared phosphors are single phase with tetragonal crystal structure. The FESEM and EDX spectra confirm the single phase nature of the phosphors. FTIR technique identifies the various vibrational modes present in the prepared phosphors. The UV–Visible analysis provides the absorption region and band gap energies of undoped as well as doped BaLaGa 3 O 7 phosphors. The photoluminescence (PL) excitation spectra consist of sharp excitation peaks of Eu 3+ ions at 374 and 394 nm. The emission spectra corresponding to excitation wavelengths of 374 and 394 nm have been carried out. Maximum PL emission is obtained for excitation at 374 nm and it provides excellent orange red emission. The decay profile of BaLaGa 3 O 7 :xEu 3+ phosphors have been carried out. The mechanoluminescence (ML) property of the doped phosphors reveals good ML emission without any pre irradiation. The information about the trap depth parameters and charge carriers in the 1 kGy irradiated BaLaGa 3 O 7 phosphor has been studied using the thermoluminescence (TL) glow curves. The BaLaGa 3 O 7 phosphor is having kinetics of first order with activation energy 1.107 eV. • The Photoluminescence (PL) and Mechanoluminescence (ML) properties of BaLaGa 3 O 7 ceramic phosphor doped with different concentrations of Eu 3+ ions have been prepared for the first time. • The maximum photoluminescence and mechanoluminescence intensity is obtained for 0.05 mol % of Eu 3+ ions. • Chromaticity diagram shows that the wavelength emission is in the near red region." @default.
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- W3203883417 date "2022-01-01" @default.
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- W3203883417 title "Structural, optical and luminescence properties of BaLaGa3O7: x Eu3+ ceramic phosphors" @default.
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