Eu3+ and Dy3+-activated LaAlO3 phosphor for solid-state lighting

Ramteke, S.K.; Yerpude, A.N.; Kokode, N. S.; Shinde, V. V.; Dhoble, S.J.

doi:10.1007/s10854-020-03208-x

Cited by 20 publications

(5 citation statements)

References 25 publications

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“…As a result, the CIE chromaticity coordinates for BiPO 4 :Eu 3+ were derived from the photoluminescence (PL) spectra under 395 nm excitation and are depicted in Figure 7. [ 31–33 ] The BiPO 4 :Eu 3+ phosphor had chromaticity coordinates of wavelength 592 of (0.586, 0.412) and for wavelength 616 nm of (0.682, 0.317). As a result, by connecting only two places, such as the BiPO 4 :Eu 3+ phosphor, [ 34 ] white emission with CIE coordinates (x = 0.211, y = 0.238) may be achieved.…”

Section: Resultsmentioning

confidence: 99%

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Nandanwar¹,

Yerpude²,

Kokode³

et al. 2022

Luminescence

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The synthesis of BiPO 4 :Eu 3+ phosphors has been achieved via a wet chemical process. X-ray diffraction patterns show that the phase of the as-prepared samples matches very well with the standard BiPO 4 structure. At 395 nm, the highest excitation intensity was observed. Following 395 nm excitation, two characteristic emission peaks at 592 nm and 616 nm were shown. At 0.5 mol% of Eu 3+ ions, concentration quenching occurred. The particle size is within the micrometre range, according to the scanning electron microscope magnification. The chromaticity coordinates for wavelengths 592 nm and 616 nm are (x = 0.586, y = 0.412) and (x = 0.682, y = 0.317), respectively. The findings imply that the prepared phosphor may be used to create white light-emitting diodes.

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Section: Resultsmentioning

confidence: 99%

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Nandanwar¹,

Yerpude²,

Kokode³

et al. 2022

Luminescence

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“…6. The intra-configurational 4f-4f transitions of Eu 3+ in the matrix were attributed to a sequence of acute excitation bands between 350 and 420 nm with the electronic transitions 7 F 0 → 5 D 4 , 7 F 0 → 5 G 3 , 7 F 0 → 5 G 2 , 7 F0→ 5 L6 and 7 F0→ 5 D3 at wavelengths 361 nm, 377 nm, 383 nm, 394 nm, and 416 nm, respectively [15]. The peak absorbance band of the 7 F0→ 5 L6 transition at 394 nm corresponds to the output wavelength of near-UV chips in phosphor-converted w-LEDs.…”

Section: 22mentioning

confidence: 99%

Synthesis and Photoluminescence Properties of Ca5(PO4)3F: Ln (Ln: Dy3+, Eu3+ and Sm3+) Phosphors for near UV-based solid state lighting

Nandanwar¹,

Kokode²

2022

Phys. Chem. Solid St.

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The wet chemical synthesis of Ca5(PO4)2F host with lanthanide doped Dy3+, Eu3+ and Sm3+ was reported. The X-ray diffraction (XRD), structural and photoluminescence characteristics of phosphors were thoroughly investigated. The hexagonal system with the space group P 63/m (176) was verified by X-ray powder diffraction. Under UV excitation (352 nm), Ca5(PO4)2F:Dy3+ emits 481 nm (blue) and 575 nm (yellow), corresponding to 4F9/2→6H15/2 (magnetic dipole) and 4F9/2→6H13/2 (electric dipole) transitions, respectively. When Ca5(PO4)2F:Eu3+ phosphor was excited at 394 nm, the emission spectra showed strong bands at 591 nm (orange) and 614 nm (red). When excited at 403 nm, the emission spectra of Sm3+ activated Ca5(PO4)2F phosphor displayed emission peaks at 565 nm (yellow) and 599 nm (orange), respectively. The research analyses the photoluminescence characteristics of Ca5(PO4)3F: Ln (Ln: Dy3+, Eu3+ and Sm3+) as a possible material for near UV-based solid-state lighting.

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“…Ramteke et al utilized a simultaneous ion cosubstitution design strategy for synthesizing different color-emitting LaAlO 3 :Eu 3+ ,Dy 3+ phosphors and found that LaAlO 3 :Eu 3+ ,Dy 3+ showed excellent luminescent properties, and no concentration quenching occurred . The Eu 3+ ions in LaAlO 3 show strong emission (Figure a) at 593 and 614 nm, corresponding to the 5 D 0 - 7 F 1 and 5 D 0 - 7 F 2 transitions, respectively. , Dy 3+ in LaAlO 3 shows emission in the blue region (484 nm) and yellow region (575 nm), ascribed to magnetic dipole transitions at excitation wavelengths 351, 388, and 428 nm (Figure b).…”

Section: Downconversion Materials For Photovoltaic Applicationsmentioning

confidence: 99%

“…(a) Emission spectra of LaAlO 3 :Eu 3+ , (b) emission spectrum of LaAlO 3 :Dy 3+ (λ ex = 351 nm); (c) CIE chromatic diagram of LaAlO 3 :Eu 3+ and LaAlO 3 :Dy 3+ phosphors. Reproduced with permission from ref . Copyright 2020, Springer.…”

Section: Downconversion Materials For Photovoltaic Applicationsmentioning

confidence: 99%

Synthesis and Luminescence Characterization of Downconversion and Downshifting Phosphor for Efficiency Enhancement of Solar Cells: Perspectives and Challenges

Satpute

Mehare

Tiwari

et al. 2022

ACS Appl. Electron. Mater.

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Currently, the world is facing an energy crisis. One of the techniques to fulfill the energy demand is to increase the utilization of solar energy. For harvesting solar energy in large amounts, it is essential to develop efficient solar cells. Notably, solar cells (photovoltaic cells) produce electricity from solar energy. The biggest hurdles, however, are the capability and reliability of solar cells. Poor energy density and the spectrum in the bandgap of semiconductor phosphors do not match the energy allocation of the photons in solar spectra lines. These issues and cell efficacy must be addressed before photovoltaic cells can be developed as a viable source of electrical power. The amount of energy generated per unit area depends linearly on cell efficiency. Hence, it makes sense to increase the efficiency rather than enhancing the space for solar cell installation. One well-known method for converting a high-energy photon into two or more lower-energy photons is “downconversion”, which makes use of the wide solar spectrum required for solar cells. The design maximizes the use of the entire sunlight spectrum, improving the efficiency of various solar cell types. This review article surveys how spectrum converters, especially lanthanide-based downconverters and downshifters will be developed. This review focuses on the current materials and methods used to enable the downconversion and downshifting processes in solar cells and some of the challenges in developing solar cells.

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Eu3+ and Dy3+-activated LaAlO3 phosphor for solid-state lighting

Cited by 20 publications

References 25 publications

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Synthesis and Photoluminescence Properties of Ca5(PO4)3F: Ln (Ln: Dy3+, Eu3+ and Sm3+) Phosphors for near UV-based solid state lighting

Synthesis and Luminescence Characterization of Downconversion and Downshifting Phosphor for Efficiency Enhancement of Solar Cells: Perspectives and Challenges

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Eu3+ and Dy3+-activated LaAlO3 phosphor for solid-state lighting

Cited by 20 publications

References 25 publications

Wet chemical synthesis of BiPO4:Eu3+ phosphor for w‐LED application

Wet chemical synthesis of BiPO4:Eu3+ phosphor for w‐LED application

Synthesis and Photoluminescence Properties of Ca5(PO4)3F: Ln (Ln: Dy3+, Eu3+ and Sm3+) Phosphors for near UV-based solid state lighting

Synthesis and Luminescence Characterization of Downconversion and Downshifting Phosphor for Efficiency Enhancement of Solar Cells: Perspectives and Challenges

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Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application

Wet chemical synthesis of BiPO₄:Eu³⁺ phosphor for w‐LED application