Down-shifting and down-conversion emission properties of novel CdO–P2O5 invert glasses activated with Pr3+ and Pr3+/Yb3+ for photonic applications

Romero-Romo, W.; Cármona-Téllez, S.; Lozada‐Morales, R.; Soriano-Romero, O.; Caldiño, U.; Álvarez-Ramos, M. E.; Zayas, Ma. E.; Meza-Rocha, A.N.

doi:10.1016/j.optmat.2021.111009

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…The XRD peaks show that the smaller ratios of rare earth materials make no contribution to any significant crystalline phase. Such behavior has already been evidenced in glasses doped with praseodymium, as reported in a similar study [20]. Furthermore, the diffractograms manifest a decrease in intensity of the hump at 21.24 • .…”

Section: Structural Analysissupporting

confidence: 81%

“…The IR emission peaks at 1267 nm and 1369 nm are due to downshifting radiative transitions 1 G4 → 3 H5 [57]. The spectral line recorded at 1422.2 nm and 1476.6 nm corresponds to the radiative transfer of energy due to the transition 1 D2 → 1 G4 [20].…”

Section: Visible Emissionmentioning

confidence: 95%

“…Furthermore, the diffractograms manifest a decrease in intensity of the hump at 21.24 • . This could be due to the enhanced solubility of Pr 3+ in the glass matrix, eventually contributing to an intense amorphous nature [20], with the absence of longrange atomic ordering in the polymeric structure [14].…”

Section: Structural Analysismentioning

confidence: 99%

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Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Gracie

Geetha²,

Battisha³

2023

J. Phys. D: Appl. Phys.

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Silica phosphate glasses strengthened with calcium oxide modifier and doped with different concentrations (0%, 0.5%, 1%, 1.5 mol%) of praseodymium (Pr3+) were synthesized by sol-gel method. The absence of sharp peaks in the x-ray diffraction (XRD) spectra confirms non-crystallinity of the glasses. Higher doping indicates increasing optical band gaps due to Burstein Moss shift, which also reflects on structural disorders at the absorption tails as validated by Urbach’s rule. The density increases with a subsequent decrease in oxygen packing density, proving the mechanical and chemical stability of the glasses. The composite glasses are multifunctional with marked absorption at 280 nm predicting its purpose as UV shielding films. Luminescence corresponding to the intra 4f transition, 〖1_D〗_2→〖1_G〗_4 in the IR region, with high transmission and low reflection losses suggests the use of the synthesized glass material for S-band telecommunications, while the radiative process involving 〖3_P〗_0→〖3_F〗_2 yields a predominant red laser source. Commission International de l’Eclairage (CIE) color coordinates observe warmer red emission corresponding to Correlated Colour Temperature (CCT) of 3200 K. The composite silica phosphate glass systems evidence the effective role of Pr3+ for photonic applications.

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Section: Structural Analysissupporting

confidence: 81%

Section: Visible Emissionmentioning

confidence: 95%

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Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Gracie

Geetha²,

Battisha³

2023

J. Phys. D: Appl. Phys.

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“…The n = 6, 8, and 10 refer to dipole-dipole, dipole-quadrupole, and quadrupole-quadrupole interactions, respectively. 31,32 The water stability of the as-obtained phosphors is also investigated by spraying water, as shown in Fig. 4 and Video S1 (available online at stacks.iop.org/JSS/11/086002/mmedia).…”

Section: Resultsmentioning

confidence: 99%

Stable Multimode Luminescence Performances of SrGa₁₂O₁₉: Sm³⁺, Tb³⁺ Phosphor for Anti-Counterfeiting Application

Gu¹,

Wang²,

Ma³

et al. 2022

ECS J. Solid State Sci. Technol.

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Fluorescence materials have been widely employed for anti-counterfeiting techniques owing to their high-throughput, facile identification, and simplicity of production. However, the stability of the materials is a prerequisite for their subsequent application. Here, a series of SrGa12O19: Sm3+, Tb3+ phosphors with multi-color luminescence are obtained successfully by the traditional solid-state method. These Sm3+/Tb3+ co-doped phosphors emit green, orange, and yellow-green under the excitation of 254, 365, and 254 nm+365 nm ultraviolet (UV) lamps, respectively. After removal of the UV lamp, the green long persistent luminescence (LPL) phenomenon is exhibited and then vanishes 15 s later. The dynamic PL and LPL are associated with the interaction between PL and trapping centers. Notably, as-obtained phosphors show excellent stability against both air, water, and high temperature, which makes the as-obtained phosphors a great application potential in high-level anti-counterfeiting with high stability.

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“…Luminescent down-shifting (LDS) and down conversion (DC) are new approaches to harvesting high-energy incident photons from the sun through the conversion of highenergy photons into multiple photons of low energy to facilitate conversion into electric-ity [16][17][18][19][20]. LDS and DC spectral conversion layers improve the responsivity of C-Si solar cells operating at shorter wavelengths while reducing recombination loss and thermalization loss.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Luminescent Down-Shifting Spectral Conversion Effects on Silicon Solar Cells with Various Combinations of Eu-Doped Phosphors

Liu

2022

Materials

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Luminescent down-shifting (LDS) spectral conversion is a feasible approach to enhancing the short-wavelength response of single junction solar cells. This paper presents the optical and electrical characteristics of LDS spectral conversion layers containing a single species or two species of Eu-doped phosphors applied to the front surface of silicon solar cells via spin-on coating. The chemical composition, surface morphology, and fluorescence emission of the LDS layers were respectively characterized using energy-dispersive X-ray analysis, optical imaging, and photoluminescence measurements. We also examined the LDS effects of various phosphors on silicon solar cells in terms of optical reflectance and external quantum efficiency. Finally, we examined the LDS effects of the phosphors on photovoltaic performance by measuring photovoltaic current density–voltage characteristics using an air-mass 1.5 global solar simulator. Compared to the control cell, the application of a single phosphor enhanced efficiency by 17.39% (from 11.14% to 13.07%), whereas the application of two different phosphors enhanced efficiency by 31.63% (from 11.14% to 14.66%).

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Down-shifting and down-conversion emission properties of novel CdO–P2O5 invert glasses activated with Pr3+ and Pr3+/Yb3+ for photonic applications

Cited by 11 publications

References 36 publications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Stable Multimode Luminescence Performances of SrGa₁₂O₁₉: Sm³⁺, Tb³⁺ Phosphor for Anti-Counterfeiting Application

Characterization of Luminescent Down-Shifting Spectral Conversion Effects on Silicon Solar Cells with Various Combinations of Eu-Doped Phosphors

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Down-shifting and down-conversion emission properties of novel CdO–P2O5 invert glasses activated with Pr3+ and Pr3+/Yb3+ for photonic applications

Cited by 11 publications

References 36 publications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Stable Multimode Luminescence Performances of SrGa12O19: Sm3+, Tb3+ Phosphor for Anti-Counterfeiting Application

Characterization of Luminescent Down-Shifting Spectral Conversion Effects on Silicon Solar Cells with Various Combinations of Eu-Doped Phosphors

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Stable Multimode Luminescence Performances of SrGa₁₂O₁₉: Sm³⁺, Tb³⁺ Phosphor for Anti-Counterfeiting Application