Ion exchanged YVO4:Eu3+ nanocrystals and their strong luminescence enhanced by energy transfer of thenoyltrifluoroacetone ligands

Tang, Lu; Gui, Weijun; Ding, Kanjunjie; Chen, Nan; Du, Guoping

doi:10.1016/j.jallcom.2013.12.112

Cited by 25 publications

(19 citation statements)

References 27 publications

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“…7(a) and 7(b) for clearer demonstration. The band gap of pure YVO 4 is found to be 3.69 and 3.73 eV for samples prepared via combustion and solid-state reaction route, respectively and the results are nearly equal to the values obtained by other groups [33]. After Eu 3?…”

Section: Resultssupporting

confidence: 55%

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

2015

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In this work, Eu 3? -doped YVO 4 phosphors were prepared via the solid-state reaction and the combustion method and the role of the synthesis process on the structural and emission properties of YVO 4 :Eu 3? was investigated. Combustion synthesis yielded tetragonal phase with the space group I4 1 /amd at a relatively low temperature and within short duration. The infrared spectra confirmed the characteristic bands of Y-O and V-O at around 450 and 830 cm -1 , while the samples prepared by combustion route exhibited C-O band and O-H-O bending vibrations at 1376 and 1637 cm -1 , respectively. The band gap energy of YVO 4 , prepared by different methods, was found in the range of 3.6-3.73 eV. Upon UV excitation, the Eu 3? -activated samples exhibited characteristic red-orange emission lines generated from 5 D 0 ? 7 F 1,2 transitions of Eu 3? ions, respectively. The red-to-orange emission intensity ratio was found to be around 4.6 for all samples and proved to be competitive with the commercially available red phosphors. However, Y 1-x Eu x VO 4 phosphors, synthesized by solid-state reaction technique, exhibited elevated Eu 3? solubility and higher emission intensity than the samples prepared by combustion route owing to the larger crystallite size and minor C-O and O-H bonds. The critical concentration of Eu 3? ions for the maximum emission was estimated to be 2.0 and 0.5 mol% for the samples obtained by solid-state reaction and combustion method, respectively. The present phosphors were observed to be effectively excitable via the broad range of UV lights and were proved to be compatible with the UV LEDs.

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Section: Resultssupporting

confidence: 55%

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

2015

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“…Figure 7 shows the FTIR spectra of BA, TTA, the LaF 3 :Eu 3+ -BA and LaF 3 :Eu 3+ -TTA hybrid nanostructures, and the LaF 3 :Eu 3+ nanoparticles. As shown in 27 In Figure 7a, the band at 1700 cm −1 is associated with the C O stretching vibration frequency, 32 while the bands at 1596 cm −1 and 1421 cm −1 are assigned to the asymmetric and symmetric stretching vibration of COO-in BA, respectively. 21 The peak at 712 cm −1 (Fig.…”

Section: Characterizationmentioning

confidence: 96%

“…27 Different amounts of Eu(NO 3 3 · 6H 2 O (0.01, 0.05, 0.09, 0.12, 0.15, 0.18 mmol, respectively) were dissolved in 30 ml of anhydrous ethanol. For the ion exchange step of LaF 3 :Eu 3+ nanoparticles, 1 mmol undoped LaF 3 nanocrystals were added to the above Eu(NO 3 3 solutions under ultrasonication for 30 min, they were stirred for 1 h and let stand for 24 h at room temperature to allow for completion of the ion exchange process.…”

Section: Preparation Of Laf 3 :Eu 3+ Nanoparticlesmentioning

confidence: 99%

“…In Figure 7(b), The broad absorption band from 3650 cm −1 to 3200 cm −1 is attributed to the surface O-H stretching vibration. 27 The band at 1517 cm −1 is associated with the C O stretching vibration frequency, while the bands at 1412 cm −1 are assigned to the stretching vibration of COO-in TTA. 21 The absorption bands located at 1307 cm −1 , 1200 cm −1 , and 1142 cm −1 are assigned to the C-F symmetric vibrations.…”

Section: Characterizationmentioning

confidence: 99%

“…We employed a two-step process to prepare LaF 3 :Eu 3+ nanoparticles. The solvothermal method 19 20 25 was used to synthesize undoped LaF 3 nanoparticles at the first step, and they were then ion exchanged 27 for Eu 3+ ions at the second step. The ionexchanged LaF 3 :Eu 3+ nanoparticles were decorated with organic ligands to form the inorganic-organic hybrid nanostructures exhibiting strong luminescence sensitization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation of LaF₃:Eu³⁺ Based Inorganic–Organic Hybrid Nanostructures via an Ion Exchange Method and Their Strong Luminescence

Wang¹,

Yang²,

Chen³

et al. 2016

j nanosci nanotechnol

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Lanthanide doped inorganic-organic hybrid nanostructures have received much attention in recent years due to their strong luminescence sensitized by organic ligands via an energy transfer route. In this work, an ion exchange method was used to prepare Eu3+ doped LaF3 based inorganic-organic hybrid nanostructures with organic ligands. The undoped LaF3 nanoparticles were first synthesized by a hydrothermal method, and Eu3+ ions were then ion exchanged into these LaF. nanoparticles to form the Eu3+ doped LaF3 nanoparticles, which were then used to prepare the inorganic-organic hybrid nanostructures with benzoic acid and 2-thenoyltrifluoroacetone. As a result of the luminescence sensitization, strong luminescence was observed in these inorganic-organic hybrid nanostructures, and the luminescence enhancement was over 40 times. Dependence of the luminescence of the hybrid nanostructures on the doping concentration and amount of organic ligands was studied in detail, and optimization was conducted to obtain the maximum luminescence for the hybrid nanostructures.

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Eu³⁺‐doped LaF₃‐based inorganic–organic hybrid nanostructured materials for broad‐spectrum excitation and strong photoluminescence

et al. 2022

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Inorganic-organic hybrid nanoparticles formed by lanthanide-doped nanostructures and organic ligands have been intensively studied, which could greatly increase their photoluminescence performance as a result of the energy transfer process from organic ligands to Ln 3+ ions. However, the photoluminescence intensity and excitation spectral width are still quite limited on coordinating with a single type of organic ligand. In this work, Eu 3+ -doped LaF 3 (LaF 3 :Eu 3+ ) nanoparticles were prepared using a hydrothermal method, and were then hybridized with benzoic acid and thenoyltrifluoroacetone to form the hybrid nanostructures. After that, the hybrid nanostructures were mixed with 2,2 0 -azobisisobutyronitrile and methyl methacrylate to prepare the composites. The sample obtained by hybridization and composite doping with 5% Eu 3+ exhibited the best photoluminescence performance. The excitation peak width and luminescence intensity of the hybrid nanostructures were significantly increased. The excitation spectral width of the inorganic-organic mixed hybrid nanostructures was particularly enhanced, and covered the whole ultraviolet band region of solar light on Earth. The prepared composites exhibited good optical properties.

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Ion exchanged YVO4:Eu3+ nanocrystals and their strong luminescence enhanced by energy transfer of thenoyltrifluoroacetone ligands

Cited by 25 publications

References 27 publications

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

Preparation of LaF₃:Eu³⁺ Based Inorganic–Organic Hybrid Nanostructures via an Ion Exchange Method and Their Strong Luminescence

Eu³⁺‐doped LaF₃‐based inorganic–organic hybrid nanostructured materials for broad‐spectrum excitation and strong photoluminescence

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Ion exchanged YVO4:Eu3+ nanocrystals and their strong luminescence enhanced by energy transfer of thenoyltrifluoroacetone ligands

Cited by 25 publications

References 27 publications

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

Structural and photoluminescence properties of red-light emitting YVO4:Eu3+ phosphor synthesized by combustion and solid-state reaction techniques: a comparative study

Preparation of LaF3:Eu3+ Based Inorganic–Organic Hybrid Nanostructures via an Ion Exchange Method and Their Strong Luminescence

Eu3+‐doped LaF3‐based inorganic–organic hybrid nanostructured materials for broad‐spectrum excitation and strong photoluminescence

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Product

Resources

About

Preparation of LaF₃:Eu³⁺ Based Inorganic–Organic Hybrid Nanostructures via an Ion Exchange Method and Their Strong Luminescence

Eu³⁺‐doped LaF₃‐based inorganic–organic hybrid nanostructured materials for broad‐spectrum excitation and strong photoluminescence