Multi wall carbon nanotubes assisted synthesis of YVO4:Eu3+ nanocomposites for display device applications

Grandhe, Bhaskar Kumar; Bandi, Vengala Rao; Jang, Kiwan; Ramaprabhu, S.; Lee, Ho-Sueb; Shin, Dong‐Soo; Yi, Soung Soo; Jeong, Jung-Hyun

doi:10.1016/j.compositesb.2011.08.011

Cited by 16 publications

(7 citation statements)

References 22 publications

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“…Because of the high photoluminescence (PL) quantum yield of about 70%, bulk YVO 4 :Eu 3 þ materials had been extensively used as red phosphors in cathode ray tubes [3,4]. For improving the PL intensity Bi 3 þ ion was added as a sensitizer of Eu 3 þ ion through the charge transfer (CT) transition from Bi 3 þ 6s to V 5 þ 3d, followed by energy transfer to Eu 3 þ .…”

Section: Introductionmentioning

confidence: 99%

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

Wang

Tie

Wan

2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

Wang

Tie

Wan

2015

Ceramics International

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“…Several synthesis routes have been described for the preparation of Eu 3? -doped YVO 4 such as co-precipitation, hydrothermal, solid-state reaction [14,15]. But there are a few reports on preparation of vanadate phosphor by combustion method [16,17].…”

Section: Introductionmentioning

confidence: 99%

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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“…All the measurements were done at room temperature. ions have the same valence and similar atomic radius, the doped Eu 3+ has little effect on the structure of YVO 4 . Compared with Fig.…”

Section: Characterizationmentioning

confidence: 99%

“…Yttrium vanadate (YVO 4 ) has been proved one of the best candidates for doping into rare earth ions [8] since it provides a suitable Y 3+ site where trivalent rare-earth ions can be replaced without additional charge compensation. In particular, as a typical red-emitting phosphor, europium doped YVO 4 has been explored in many fields [8][9][10][11]. Recent years, much attention has been focused on the nanoscale phosphors.…”

Section: Introductionmentioning

confidence: 99%

“…Over past decades, many efforts have been made to study the rare-earth doped luminescence materials, which have been largely applied in fields of illuminations and displays, such as fluorescent lamps, cathode-ray tubes, field emission displays, plasma display panels, electro-optical polarizers and white lightemitting diodes [1][2][3][4][5][6][7]. Yttrium vanadate (YVO 4 ) has been proved one of the best candidates for doping into rare earth ions [8] since it provides a suitable Y 3+ site where trivalent rare-earth ions can be replaced without additional charge compensation.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Luminescence Properties of (Y, Gd) (P, V)O4:Eu3+, Bi3+Red Nano-phosphors with Enhanced Photoluminescence by Bi3+, Gd3+ Doping

Tang

Zhu

et al. 2013

Nano-Micro Lett.

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Abstract:A series of (Y1−y, Gdy)0.95−x(Py, V1−y)O4:0.05Eu 3+ , xBi 3+ phosphors have been successfully prepared by a subsection method. The crystal structure, surface morphology and luminescence properties were investigated. It was found that the sintered samples crystallized in a tetragonal crystal system with space group I41/amd(a = b = 0.7119 nm, c = 0.6290 nm). The products presented rod-like morphology with length of 100-150 nm and width of 50-100 nm. A maximum peak at 619 nm ( 5 D0 → 7 F2) was observed in emission spectrum of the phosphors. It was also found that co-doping of Bi 3+ , P 5+ and Gd 3+ ions into YVO4:Eu 3+ can not only made the right edge of the excitation band shift to the long-wavelength region, but also increased the emission intensity at 619 nm sharply and decreased the lifetime of fluorescence decay. These results may expand the application scope of the phosphors.

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Multi wall carbon nanotubes assisted synthesis of YVO4:Eu3+ nanocomposites for display device applications

Cited by 16 publications

References 22 publications

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

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

Synthesis and Luminescence Properties of (Y, Gd) (P, V)O4:Eu3+, Bi3+Red Nano-phosphors with Enhanced Photoluminescence by Bi3+, Gd3+ Doping

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