Eu(<scp>iii</scp>)-Doped tri-calcium Ca3(1−X−Z)MZ(PO4)2AX:X host array: optical investigations of down-conversion red phosphor for boosting display intensity and high color purity

Kadam, Abhijeet R.; Kohale, Ritesh; Mishra, G. C.; Dhoble, S.J.

doi:10.1039/d0nj05930g

Cited by 30 publications

(10 citation statements)

References 68 publications

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“…These peaks were due to 7 F 0 → 5 L 6 , 7 F 0 → 5 D 2 , and 7 F 0 → 5 D 1 transitions and demonstrated that UV, blue, green laser, and light‐emitting diodes were proficient exciting sources that acquired Eu 3+ emission. [ 43,48 ] Detailed analysis for the emission of Eu 3+ was carried out for each of the excitation wavelength to confirm the effect of the pumping wavelength on the emission spectra. Figure 11(a), (b), and (c) shows the PL emission spectra of the YZO phosphor at 395 nm, 466 nm and 534 nm, respectively, with a correspondingly dominant peak at 618 nm.…”

Section: Resultsmentioning

confidence: 99%

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

et al. 2022

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Pyrochlore phosphors have shown their worth in modern day lighting in the last few years. Colour tunability of the phosphor is one of the modern techniques used to obtain white light‐emitting diodes (WLEDs). In the proposed work, Y2Zr2O7:Sm3+,Eu3+ phosphors were investigated for WLED applications as well as display devices. A convectional solid‐state diffusion method was used to synthesize the proposed phosphors. X‐ray diffraction of the proposed phosphors was performed and compared with the standard Inorganic Crystal Structure Database. The crystal structure of the sample was cubic in nature, obtained from Rietveld refinement. Vibrational and morphological studies on the samples were carried out using Fourier transform infrared spectroscopy and scanning electron microscopy analysis. The photoluminescence study of the colour tunable phosphor showed the characteristic peak of Sm3+ together with the two sharp peaks of Eu3+ ions. Greenish yellow to red colour tunability was observed in the proposed phosphor with enhancement of Eu3+ ions. All these results showed the worth of this sample for WLEDs applications as well as in display devices.

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Section: Resultsmentioning

confidence: 99%

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

et al. 2022

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“…The highest intensity was obtained at 1.0 mol% concentration for the Sm 3+ ‐doped Ca 8.25 Na 1.5 Al 6 O 18 phosphor and this then decreased in the yellowish‐red region on excitation at 346 nm, as shown in the chromaticity diagram. The colour purity of the prepared Sm 3+ ‐doped Ca 8.25 Na 1.5 Al 6 O 18 phosphor sample was calculated using the relationship [ 30‐33 ] :…”

Section: Resultsmentioning

confidence: 99%

Combustion‐assisted Ca_8.25Na_1.5Al₆O₁₈:Sm³⁺ phosphors for solid‐state lighting and WLED applications

2022

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Aluminate‐based phosphors have been the most investigated luminescent phosphors over decades due to their outstanding optical properties. In the proposed work, a series of Sm3+‐doped Ca8.25Na1.5Al6O18 (CNAO) phosphor sample was prepared using a simple combustion technique with the help of two fuels i.e., urea–glycine. The purity of phase and structural analysis of the CNAO phosphors were confirmed using X‐ray diffraction analysis. Vibrational features of this phosphors confirmed were via Fourier transform infrared analysis. A photoluminescence study of this phosphor showed a doublet emission at 568 and 576 nm in the yellow region attributable to the 4G5/2→6H5/2 transition of Sm3+ ions, whereas a doublet peak noticed in red region ranged from 600 to 620 nm and was attributable to the 4G5/2→6H7/2 transition of Sm3+ ions. Moreover, Commission Internationale de l'éclairage colour coordinates were also located in the yellowish‐red region and confirmed the potential of this phosphor as a yellowish‐red component for white light‐emitting diodes and display devices applications.

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“…The predictable fleecy morphology of the particles is usually obtained from simple combustion synthesis and the voids are caused by the vast gaseous matter that runs away due to extraordinary exothermicity. [ 28,29 ] The given morphology revealed that the phosphor might be a potential candidate for WLEDs and display devices. [ 30 ]…”

Section: Resultsmentioning

confidence: 99%

Luminescence investigation of Sm³⁺,Eu²⁺‐activated/co‐activated Ba₂AlB₄O₇Cl phosphors: novel red to blue colour tuning in chloroborates

2022

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Borochlorate phosphors have shown their worth in modern day lighting over the last few years. Colour tunability of the phosphor is a modern techniques used to obtain white-light-emitting diodes (WLEDs). In the proposed work, Sm 3+ ,Eu 2+ -activated/co-activated Ba 2 AlB 4 O 7 Cl phosphors were investigated for WLED applications as well as display devices. A convectional solid-state diffusion method was used to synthesize the proposed phosphors. X-ray diffraction (XRD) of the proposed phosphors confirmed the crystalline nature of the sample. Morphological studies on the samples were carried out using scanning electron microscopy analysis. A photoluminescence study of the colour tunable phosphor showed the characteristic peak of Sm 3+ together with one broad peak for Eu 2+ ions. Red to blue colour tunability was observed in the proposed phosphor with enhancement of Eu 2+ ions. All these results showed the worth of this sample in WLED applications as well as in display devices.

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Eu(iii)-Doped tri-calcium Ca_3(1−X−Z)M_Z(PO₄)₂A_X:X host array: optical investigations of down-conversion red phosphor for boosting display intensity and high color purity

Abstract: Eu3+-activated double and triple phosphates were synthesized by the high temperature solid-state reaction. These phosphors were characterized by X-ray diffraction (XRD), SEM (Scanning electron microscopy), Fourier transform infrared spectroscopy (FT-IR)...

Cited by 30 publications

References 68 publications

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Combustion‐assisted Ca_8.25Na_1.5Al₆O₁₈:Sm³⁺ phosphors for solid‐state lighting and WLED applications

Luminescence investigation of Sm³⁺,Eu²⁺‐activated/co‐activated Ba₂AlB₄O₇Cl phosphors: novel red to blue colour tuning in chloroborates

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Eu(iii)-Doped tri-calcium Ca3(1−X−Z)MZ(PO4)2AX:X host array: optical investigations of down-conversion red phosphor for boosting display intensity and high color purity

Abstract: Eu3+-activated double and triple phosphates were synthesized by the high temperature solid-state reaction. These phosphors were characterized by X-ray diffraction (XRD), SEM (Scanning electron microscopy), Fourier transform infrared spectroscopy (FT-IR)...

Cited by 30 publications

References 68 publications

Luminescence study of Sm3+,Eu3+‐doped Y2Zr2O7 host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Luminescence study of Sm3+,Eu3+‐doped Y2Zr2O7 host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Combustion‐assisted Ca8.25Na1.5Al6O18:Sm3+ phosphors for solid‐state lighting and WLED applications

Luminescence investigation of Sm3+,Eu2+‐activated/co‐activated Ba2AlB4O7Cl phosphors: novel red to blue colour tuning in chloroborates

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Eu(iii)-Doped tri-calcium Ca_3(1−X−Z)M_Z(PO₄)₂A_X:X host array: optical investigations of down-conversion red phosphor for boosting display intensity and high color purity

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Luminescence study of Sm³⁺,Eu³⁺‐doped Y₂Zr₂O₇ host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor

Combustion‐assisted Ca_8.25Na_1.5Al₆O₁₈:Sm³⁺ phosphors for solid‐state lighting and WLED applications

Luminescence investigation of Sm³⁺,Eu²⁺‐activated/co‐activated Ba₂AlB₄O₇Cl phosphors: novel red to blue colour tuning in chloroborates