Spectral and optical properties of Ruddlesden-Popper-type Ba3Zr2O7 phosphors doped with Eu3+ ion

This paper reports the spectroscopic investigation of Ba 3 Zr 2 O 7 phosphors. A series of Ba 3 Zr 2 O 7 : Eu 3+ with the different molar concentrations (0–4 mol.%) of europium (Eu 3+ ) ion is synthesized by the solution combustion method. The synthesized powders are characterized systematically usi...

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Veröffentlicht in:Applied physics. A, Materials science & processing Materials science & processing, 2021-11, Vol.127 (11), Article 807
Hauptverfasser: Khajuria, Pooja, Mahajan, Rubby, Prakash, Ram, Choudhary, R. J., Phase, D. M.
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Sprache:eng
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Zusammenfassung:This paper reports the spectroscopic investigation of Ba 3 Zr 2 O 7 phosphors. A series of Ba 3 Zr 2 O 7 : Eu 3+ with the different molar concentrations (0–4 mol.%) of europium (Eu 3+ ) ion is synthesized by the solution combustion method. The synthesized powders are characterized systematically using X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence spectroscopy, and ultraviolet–visible spectroscopy. X-ray diffraction results indicate that the synthesized powder has a tetragonal crystal structure. X-ray photoelectron spectroscopy is used to study the elemental composition of the synthesized phosphor. Field emission scanning electron microscopy result reveals that non-uniform morphology is formed. Photoluminescence spectroscopy result shows several emission peaks due to electronic transitions of Eu 3+ ion, and the dominant peak is observed at 613 nm due to electric dipole transition 5 D 0  →  7 F 2 . CIE coordinates of Eu 3+ -activated Ba 3 Zr 2 O 7 phosphor is found to be ( x  = 0.64, y  = 0.36) which gives bright red emission. The optical band gap of the phosphors is obtained from the diffuse reflectance spectrum and found in the range of 4.62–4.83 eV.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-021-04956-1