Optical and structural investigations of MLaAlO4:Eu3+ (M = Mg2 +, Ca2+, Sr2+, and Ba2+) nanophosphors for full-color displays

Kadyan, Sonika; Singh, Devender; Sheoran, Suman; Samantilleke, A. P.; Marı́, B.

doi:10.1007/s10854-019-02544-x

Cited by 21 publications

(4 citation statements)

References 28 publications

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“…The most intense emission band is observed at 611 nm due to 5 D 0 → 7 F 2 transition, which is also known as the hypersensitive electric‐dipole (ED) transition of Eu 3+ . The magnetic‐dipole (MD) transition is observed at 590 nm due to 5 D 0 → 7 F 1 transition [20]. The other MD transition ( 5 D 0 → 7 F 4 ) is observed at 700 nm.…”

Section: Resultsmentioning

confidence: 99%

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Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Priya,

Kaur,

Attri

et al. 2023

Luminescence

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In this article, we have reported the effect of varying concentration of europium (Eu) in (50 − x)% P2O5–25% Na2O–24% CaO–% Eu2O3, where x = 1, 3, 5. The glass samples were synthesised via conventional melt‐quench method. The impact of europium ion (Eu3+) on the structural, optical and luminescent properties of phosphate soda lime glasses has been studied using X‐ray diffraction (XRD), Fourier‐transformed infrared (FTIR) spectroscopy, ultraviolet‐visible spectroscopy, scanning electron microscopy coupled with energy‐dispersive spectroscopy and photoluminescent techniques. The amorphous nature of glass samples was confirmed by XRD patterns. FTIR confirmed the presence of various functional groups. The emission spectra of synthesised samples exhibited intense emission peaks corresponding to Eu3+ under excitation at 393 nm. Among all the peaks, the maximum intensity was observed for 5D0 → 7F2 transition. Judd–Ofelt (J–O) parameters (Ω2, Ω4) and other radiative parameters such as band width, radiative transition probabilities, stimulated emission cross‐sections and branching ratio were determined from emission spectra. The other photometric parameters such as CIE coordinates and colour purity were also determined. Furthermore, cytotoxic studies were carried out on normal cell line human embryonic kidney cells (HEK‐293) using MTT assay. Results showed that the prepared samples significantly enhanced growth in glass sample‐treated cells as compared to control cells. These findings suggest that synthesised glass samples are biocompatible in nature and have potential for applications in display devices and biomedical research area.

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Section: Resultsmentioning

confidence: 99%

“…The magnetic-dipole (MD) transition is observed at 590 nm due to 5 D 0 ! 7 F 1 transition[20]. The other MD transition ( 5 D 0 !…”

mentioning

confidence: 97%

Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Priya,

Kaur,

Attri

et al. 2023

Luminescence

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“…There is ongoing research on the luminescence properties of rare earth-doped glasses and ceramics [1,2] potentially suitable for applications concerning lighting [3], displays [4,5], X-ray scintillation [6], increasing the efficiency of solar cells [7,8], and UV detection and imaging [9]. Emission in such materials is the result of optical transitions attributed to energy levels of 4f-electrons of rare earth ions (e.g., 4f 8 (for Tb 3+ ), 4f 7 (for Gd 3+ ), 4f 6 (for Eu 3+ ), and 4f 12 (for Tm 3+ )) [10].…”

Section: Introductionmentioning

confidence: 99%

Green- and Blue-Emitting Tb3+-Activated Linde Type A Zeolite-Derived Boro-Aluminosilicate Glass for Deep UV Detection/Imaging

Xiao,

Hou,

Yang

et al. 2024

Materials

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Tb3+-activated LTA zeolite-derived boro-aluminosilicate glass samples with a composition of xTb2O3-68(Na2O-Al2O3-SiO2)–32B2O3 (x = 0.2, 1.0 and 10 extra wt%) were prepared using the melt-quenching method. The emission spectra recorded upon ultraviolet (UV) excitation with two different wavelengths of 193 and 378 nm showed blue light (5D3 to 7FJ=6,5,4 and 5D4 to 7F6 transitions of Tb3+) and green light (5D4 to 7F5 transition of Tb3+) emissions with comparable intensities up to a Tb3+ concentration of 10 extra wt%. Of note, the mean decay times of the green luminescence of the glass samples were relatively fast (<20 μs). The synthesized glass has potential in applications concerning UV imaging, UV detection, and plasma display panels.

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“…Extensive applications are associated with these materials such as fluorescence lamps, solid-state lighting, displays, cathode ray tubes, white light-emitting diodes (WLEDs), sensors, and biological labelling. [1][2][3][4][5][6] WLEDs are advantageous over conventional light sources due to their various characteristics such as longer lifetime, improved brightness, and low power consumption. [7,8] Phosphor materials proficiently emit light, i.e.…”

Section: Introductionmentioning

confidence: 99%

Luminous LaAlO₃:Dy³⁺ perovskite nanomaterials: Synthesis, structural, and luminescence characteristics for white light‐emitting diodes

et al. 2022

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A single‐phase perovskite LaAlO3:Dy3+ phosphor was synthesized using a gel‐combustion method at 600°C utilization with hexamethylenetetramine as a fuel. Further calcination of the samples was carried out (800 and 1000°C) to investigate the resultant effect on the crystalline and luminescence behaviour. The crystal structure had a cubic unit cell (space group Pm3̅m) and was examined using the Rietveld refinement and X‐ray diffraction data. Additionally, Debye–Scherrer and Williamson–Hall equations were applied to determine other structural features. The particle size and morphology of phosphors were evaluated using transmission electron microscopy. Diffraction measurements were supported by the various metal–oxygen vibration modes studied with the help of Fourier transform infrared spectroscopy. Energy‐dispersive X‐ray analysis verified the chemical composition of synthesized sample. Luminescence spectra of the LaAlO3:Dy3+ phosphors exhibited intense bands for 4F9/2→6H15/2 (482 nm, bluish region) and 4F9/2→6H13/2 (574 nm, yellowish region) transitions. Commission Internationale de L'Eclairage and correlated colour temperature data confirmed the cool‐white emission of the samples under ultraviolet light excitation. The interesting and advantageous luminescence characteristics of LaAlO3:Dy3+ phosphors make them potential materials for white light‐emitting diodes.

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Optical and structural investigations of MLaAlO4:Eu3+ (M = Mg2 +, Ca2+, Sr2+, and Ba2+) nanophosphors for full-color displays

Cited by 21 publications

References 28 publications

Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Green- and Blue-Emitting Tb3+-Activated Linde Type A Zeolite-Derived Boro-Aluminosilicate Glass for Deep UV Detection/Imaging

Luminous LaAlO₃:Dy³⁺ perovskite nanomaterials: Synthesis, structural, and luminescence characteristics for white light‐emitting diodes

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Optical and structural investigations of MLaAlO4:Eu3+ (M = Mg2 +, Ca2+, Sr2+, and Ba2+) nanophosphors for full-color displays

Cited by 21 publications

References 28 publications

Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Structural, luminescent and in vitro studies of europium‐doped soda lime phosphate glasses

Green- and Blue-Emitting Tb3+-Activated Linde Type A Zeolite-Derived Boro-Aluminosilicate Glass for Deep UV Detection/Imaging

Luminous LaAlO3:Dy3+ perovskite nanomaterials: Synthesis, structural, and luminescence characteristics for white light‐emitting diodes

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Luminous LaAlO₃:Dy³⁺ perovskite nanomaterials: Synthesis, structural, and luminescence characteristics for white light‐emitting diodes