Structural, compositional and luminescence studies of Y2O3:Eu3+ nanophosphor synthesized by sol-gel method

Kakade, Prashant M.; Kachere, Avinash R.; Sahare, P.D.; Deshmukh, Alka V.; Dhole, S.D.; Jadkar, Sandesh; Mandlik, Nandkumar T.

doi:10.1016/j.jallcom.2022.167106

Cited by 20 publications

(7 citation statements)

References 43 publications

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“…A strong red emission peak centered at 612 nm attributed to the forced 5 D 0 → 7 F 2 electronic dipole transition is observed. [ 23 ] As can be seen from the insert, the PL signal strength for ODTMS‐Y 2 O 3 :Eu 3+ is only ≈6.9% weaker than that for Y 2 O 3 :Eu 3+ , indicating that hydrophobic modification has little effect on the fluorescence performance of Y 2 O 3 :Eu 3+ . The low peaks centered at 581, 588, 594, 600, and 632 nm correspond to 5 D 0 → 7 F 0 , 5 D 0 → 7 F 1 , 5 D 0 → 7 F 1 , 5 D 0 → 7 F 1 and 5 D 0 → 7 F 3 transitions, respectively.…”

Section: Resultsmentioning

confidence: 99%

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Zhou,

Wen,

et al. 2023

Part & Part Syst Charact

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Europium‐doped yttrium oxide (Y2O3:Eu3+) is one of the main red‐emitting luminescent materials currently used in light‐emitting devices owing to its high luminous efficiency, high color purity, and other excellent optical characteristics. However, Y2O3:Eu3+ is hydrophilic, which is a major obstacle to its long‐term application in high‐humidity outdoor environments. Hydrophobic modification is a viable solution to this problem, and can give Y2O3:Eu3+ many excellent properties and functions, such as self‐cleaning ability, anti‐static performance, oil/water separation functions, and corrosion resistance. This study reports the preparation of hydrophobic Y2O3:Eu3+ particles modified with nonfluorinated alkyl silanes. Several influencing factors, including the length of the carbon chain in the silane coupling agent, the pH value of the reaction system, the reaction temperature, and the ratio of reactants, on the hydrophobicity of the prepared samples are studied in detail, and the optimal conditions are determined. A superhydrophobic Y2O3:Eu3+ material with a water contact angle of 151.6° is finally obtained. Moreover, FTIR, TG, SEM, XPS, XRD, and PL are used to explore the mechanism of the hydrophobic modification and the structural and fluorescence performance changes imparted by this modification.

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Section: Resultsmentioning

confidence: 99%

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Zhou,

Wen,

et al. 2023

Part & Part Syst Charact

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“…Y 1.96 O 3 :Eu 0.04 3+ was synthesized using the wet precipitation method [16]. In this method, 2.95 g of Y 2 O 3 and 0.093 g of Eu 2 O 3 were added to 200 ml of double‐distilled water, resulting in a milky white solution.…”

Section: Methodsmentioning

confidence: 99%

“…1.96 O 3 :Eu 0.04 3+ was synthesized using the wet precipitation method[16]. In this method, 2.95 g of Y 2 O 3 and 0.093 g of Eu 2 O 3…”

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confidence: 99%

Novel low‐temperature synthesis of Y_2–xO₃:Eu_x³⁺ nanophosphor using combustion with thioglycerol as fuel for near‐UV light‐emitting diodes

Patwardhan,

Jumale,

Jumale

et al. 2023

Luminescence

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Luminescent materials used in flat panel displays, compact fluorescent lamps, and light‐emitting diodes require high purity, uniform particle size, clean surfaces, spherical shape, and dense morphology to ensure long‐term stability. Y2O3:Eu3+ is a widely studied red phosphor known for its characteristic photoluminescence (PL) emission at 613 nm with near‐UV excitation at 392 nm. Many methods have been explored to synthesize Y2O3:Eu3+ nanoparticles with exceptional purity, consistent phases, and uniform particle sizes. The aim is to synthesize particles with pristine surfaces, spherical shape, and compact morphology. This study focuses on the low‐temperature synthesis and PL investigation of Y2–xO3:Eux3+ nanophosphors using combustion with thioglycerol as fuel. The results are compared with Y2–xO3:Eux3+ red nanophosphors synthesized using wet chemical and nitrate combustion methods. The PL characteristics of the Y2–xO3:Eux3+ nanophosphors were analyzed using PL emission spectroscopy, X‐ray diffraction, and scanning electron microscopy. These findings highlight the advantageous properties of the synthesized nanophosphors, such as their suitability for solid‐state lighting applications in the lamp industry as highly efficient red phosphors. The combination of high purity, uniform particle size, clean surfaces, spherical shape, and dense morphology contributes to their potential for long‐term stability and reliable performance in lighting devices.

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“…This band could be attributed to the forced electric dipole transition 5 D 0 -7 F 2 of Eu 3+ ions, while a group of emissions peaking at lower (centered around 590 nm) as well as at higher wavelengths (centered around 700 nm) are from 5 D 0 -7 F j (j = 0, 1, 2, 3, 4) and are well-known. [104][105][106][107] It is also known that Eu gets incorporated in strontium aluminum oxide (SAO) matrix in the form of Eu 2+ as well as Eu 3+ . This is very much evident from the excitation/emission spectra given in Fig.…”

Section: Redox Reactions and Their Effect On The Luminescence Charact...mentioning

confidence: 99%

Mechanoluminescence, thermoluminescence, optically stimulated luminescence and photoluminescence in SrAl₂O₄:Eu micro- and nanophosphors: effect of particle size and annealing in different atmospheres

Sharma,

Sahare

2023

RSC Adv.

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Structural, compositional and luminescence studies of Y2O3:Eu3+ nanophosphor synthesized by sol-gel method

Cited by 20 publications

References 43 publications

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Novel low‐temperature synthesis of Y_2–xO₃:Eu_x³⁺ nanophosphor using combustion with thioglycerol as fuel for near‐UV light‐emitting diodes

Mechanoluminescence, thermoluminescence, optically stimulated luminescence and photoluminescence in SrAl₂O₄:Eu micro- and nanophosphors: effect of particle size and annealing in different atmospheres

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Structural, compositional and luminescence studies of Y2O3:Eu3+ nanophosphor synthesized by sol-gel method

Cited by 20 publications

References 43 publications

Hydrophobic Modification of Spherical Y2O3:Eu3+ Powder Using Nonfluorinated Alkyl Silanes

Hydrophobic Modification of Spherical Y2O3:Eu3+ Powder Using Nonfluorinated Alkyl Silanes

Novel low‐temperature synthesis of Y2–xO3:Eux3+ nanophosphor using combustion with thioglycerol as fuel for near‐UV light‐emitting diodes

Mechanoluminescence, thermoluminescence, optically stimulated luminescence and photoluminescence in SrAl2O4:Eu micro- and nanophosphors: effect of particle size and annealing in different atmospheres

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Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Hydrophobic Modification of Spherical Y₂O₃:Eu³⁺ Powder Using Nonfluorinated Alkyl Silanes

Novel low‐temperature synthesis of Y_2–xO₃:Eu_x³⁺ nanophosphor using combustion with thioglycerol as fuel for near‐UV light‐emitting diodes

Mechanoluminescence, thermoluminescence, optically stimulated luminescence and photoluminescence in SrAl₂O₄:Eu micro- and nanophosphors: effect of particle size and annealing in different atmospheres