Synthesis and luminescent properties: Mn4+-doped Sr3NaNbO6 phosphor with far-red emission

In this paper, Stöber silica particles were decorated with polyethyleneimine and silver nanoparticles and Eu-polyoxometalates were grafted on the surface of polyethyleneimine/silica spheres. The hybrid SiO2/Eu-polyoxometalates/Ag particles were characterized by IR, UVvis, luminescent spectra, scanning electron microscopy, transmission electron microscope, and cyclic voltammetry (CV), respectively. The hybrid particles show the bright red emission under UV light which can be observed by naked eyes. The luminescent properties of particles have been investigated which show that Ag nanoparticles have an influences on the luminescence of europium ions. The electrochemical activities of SiO2/Eu-polyoxometalates/Ag particles have been demonstrated by CV measurement. The catalytic results indicate that the hybrid particles show the catalytic properties in the oxidation of styrene and benzaldehyde is the main product of the reaction.

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Synthesis and luminescent properties investigation of novel red emission phosphors Ca7Zn2(PO4)6: Re3+ (Re =Eu, Sm and Pr)

Journal of Molecular Structure ◽

10.1016/j.molstruc.2018.12.103 ◽

2019 ◽

Vol 1181 ◽

pp. 203-208 ◽

Cited By ~ 4

Author(s):

Shuangyu Xin ◽

Faguang Zhou ◽

Chuang Wang ◽

Xuejiao Wang ◽

Zhuowei Li ◽

...

Keyword(s):

Luminescent Properties ◽

Red Emission

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Synthesis, Characterization, and Luminescent Properties of a Red-Emitting Europium Complex

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1771 ◽

2012 ◽

Vol 512-515 ◽

pp. 1771-1775

Author(s):

Li Ying Zhang ◽

Bin Li ◽

Gang Lv

Keyword(s):

Photophysical Properties ◽

Luminescent Properties ◽

Europium Complex ◽

Maximum Efficiency ◽

Red Emission ◽

Phenanthroline Ligand ◽

Organic Devices ◽

20 Nm

a fluorine functionalized 1,10-phenanthroline ligand, 3-ethyl-2-(2-fluorophenyl) imidazo[4,5-f]1,10-phenanthroline(EFPIP) and the corresponding red-emitting Eu(ΙΙΙ) complex Eu(DBM)3(EFPIP) (DBM = dibenzoylmethanate) was synthesized and the photophysical properties and electroluminescent(EL) performances were researched. When Eu(DBM)3(EFPIP) was used as emitting material in organic devices, the maximum efficiency and luminance of red emission achieved from the EL device with the configuration of ITO/m-MTDATA (30 nm)/NPB (20 nm)/ x wt% Eu(DBM)3(EFPIP) doped in CBP (30 nm)/Bphen (20 nm)/Alq3 (20 nm)/LiF (0.8 nm)/Al were 3.6 cd/A and 563 cd/m2, respectively. Compared with the previously reported devices based on methyl or chlorine substitute Eu(ΙΙΙ) complexes, the EL performances of the device using Eu(DBM)3(EFPIP) as an emitter was significantly enhanced due to the introduction of fluorine.

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Synthesis of Nano-Sized Oxide Phosphor Particles Using an Ion-Exchange Polymer/Water/Oil Emulsion Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.421-422.494 ◽

2009 ◽

Vol 421-422 ◽

pp. 494-498

Author(s):

Hiroyuki Sano ◽

Seiichiro Harada ◽

Mikio Shimizu ◽

Makoto Kuwabara

Keyword(s):

Ion Exchange ◽

Carboxymethyl Cellulose ◽

Solid Phase ◽

Luminescent Properties ◽

Chemical Solution ◽

Phosphor Powder ◽

Mechanical Grinding ◽

Red Emission ◽

Oil Emulsion ◽

Emulsion Method

We synthesized nano-sized Eu-doped Y2O3 (Y2O3:Eu) phosphor powder by an ion-exchange po-lymer/water/oil (W/O) emulsion method using carboxymethyl cellulose (CMC) as the ion-exchange polymer, in which the CMC-(Y, Eu) gel formed was calcined at 800°C in air to convert into Y2O3:Eu particles. The obtained phosphor powder consists of unagglomerated particles with sizes in the range of 30-80 nm and exhibits strong red emission at 612 nm. This CMC/W/O method for producing nano-sized oxide powder has significant advantages over conventional solid-phase and chemical solution-based methods because this method can provide unagglomerated nanoparticles of oxide phosphor without employing any mechanical pulverizing process for reducing the particles’ size into the nanometer range; mechanical grinding, such as ball milling, of phosphor powders has been well known to cause a significant degradation of their luminescent properties.

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The synthesis and luminescent properties of Eu3+ doped Li5La3Ta2O12 garnet phosphor with enhanced red emission and thermally stable

Journal of Solid State Chemistry ◽

10.1016/j.jssc.2021.122658 ◽

2021 ◽

pp. 122658

Author(s):

Bin Liu ◽

Ke Wang ◽

Jinkai Li ◽

Zongming Liu

Keyword(s):

Luminescent Properties ◽

Thermally Stable ◽

Red Emission

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Synthesis and Luminescent Properties of CaSnO3:Eu Nanopowder Prepared by a Sol–Gel Route

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2016.11805 ◽

2016 ◽

Vol 16 (4) ◽

pp. 3865-3868 ◽

Cited By ~ 3

Author(s):

Xiaoyan Fu ◽

Tuyuan Zhao ◽

Yan Zhang ◽

Yibin Chen ◽

Hongwu Zhang

Keyword(s):

Sol Gel ◽

Luminescent Properties ◽

Luminescent Materials ◽

Potential Candidate ◽

Excitation Band ◽

Transfer Energy ◽

High Quality ◽

Red Emission ◽

Red Phosphors ◽

The Eu

Luminescent properties of nanocrystalline CaSnO3:1%Eu have been investigated in order to develop novel red phosphors. The results indicate that high-quality nanoparticles with controlled stoichiometry and microstructure were prepared by a sol–gel method using citric acid and EDTA as complexes. There are two broad excitation bands located at 240 and 270 nm existing in the excitation spectrum in addition to the characteristic excitation peaks of Eu3+. Further investigations show that the excitation band located at 240 nm can be assigned to the host absorption while the Eu–O charge transfer is responsible for the 270 nm excitation band. These results indicate that the host can efficiently transfer energy to the Eu3+ ions. The more important is that since the symmetry of Eu3+ ions is lower, the pure red emission (5D0 → 7F2 transition located at 618 nm) is predominant over all the emission. This mean CaSnO3:Eu is a potential candidate for red luminescent materials.

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Combustion Synthesis of CaMoO4:Eu3+, Li+ Red Phosphors Using Urea-Thiourea Mixture Fuels

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.652-654.546 ◽

2013 ◽

Vol 652-654 ◽

pp. 546-549

Author(s):

Xia Wang ◽

Yu Zhi Feng ◽

Gui Hua Peng ◽

Zhen Hua Liang ◽

Xiao Bao Han

Keyword(s):

Combustion Synthesis ◽

Crystalline Phase ◽

Tetragonal Phase ◽

Luminescent Properties ◽

Luminescent Intensity ◽

Red Emission ◽

Red Phosphors ◽

Chromaticity Coordinates ◽

Standard Values ◽

Diffraction Peaks

The CaMoO4:Eu3+, Li+ red phosphors were synthesized by combustion synthesis with urea or urea-thiourea as fuels, and their crystalline phase, morphology and luminescent properties were investigated. The XRD results demonstrated that all the diffraction peaks of the products can be well indexed to the pure tetragonal phase of CaMoO4. The SEM photographs showed that the particles of sample using urea as fuel are agglomeration, while the particles of sample using urea-thiourea mixture fuels are non-agglomeration. The powder can be effectively excited by ultraviolet with wavelength of 395 nm, and exhibits a strong red emission with maximum wavelength at 615 nm. The luminescent intensity of the phosphor with mixture fuels had 2.2 times stronger than that of the phosphor with single fuel, and its chromaticity coordinates (0.65, 0.35) was closer to NTSC standard values (0.67, 0.33).

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