Utilization of All Hydrothermally Synthesized Red, Green, Blue Nanophosphors for Fabrication of Highly Transparent Monochromatic and Full‐Color Plasma Display Devices

Song, Woo-Seuk; Lee, Ki-Heon; Rag, Young; Yang, Heesun

doi:10.1002/adfm.201102545

Cited by 31 publications

(10 citation statements)

References 36 publications

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“…Phosphors with particle sizes smaller than 100 nm and controlled shapes opened the door to large‐scale and low‐cost fabrication of versatile transparent emitting thin films based on RE‐doped nanocrystals . In particular, techniques such as screen printing, dip coating, and electrophoretic methods combined with high‐temperature annealing or cold isostatic pressing have been reported to achieve transparent nanophosphor films with thicknesses on the order of the micrometer, which enable the development of photonic‐based strategies to mold the photoluminescence process that seek to be herein investigated.…”

Section: Introductionmentioning

confidence: 99%

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Geng

Lozano

Calvo

et al. 2017

Advanced Optical Materials

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Photonics offers new possibilities to tailor the photoluminescence process in phosphor‐converted light emitting diodes. Herein, it is demonstrated that the emission color of thin layers of rare‐earth doped nanocrystals can be strongly modulated in tunable spectral ranges using optical resonators specifically designed to this end. GdVO4:Dy3+ nanoparticles of controlled size and shape are synthesized using a solvothermal method with which highly transparent nanophosphor thin films are prepared. This paper designs and fabricates optical multilayers, which are transparent in the UV and resonant at the frequencies where the Dy3+ ions emit, to prove that the color coordinates of this emitter can be tuned from green to blue or yellow with unprecedented precision. Key to the achievement herein reported is the careful analysis of the structural and optical properties of thin nanophosphor layers with the processing temperature in order to achieve efficient photoluminescence while preserving the transparency of the film. The results open a new path for fundamental and applied research in solid‐state lighting in which photonic nanostructures allow controlling the emission properties of state‐of‐the‐art materials without altering their structure or chemical composition.

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Section: Introductionmentioning

confidence: 99%

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Geng

Lozano

Calvo

et al. 2017

Advanced Optical Materials

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“…[8][9][10] In turn, this makes lanthanoid ions almost irreplaceable components for the generation of visible light in several systems, 11 as well as in devices comprising upconversion 12,13 or downconversion 14 luminescence. Particularly, RE-doped inorganic nanoparticles [15][16][17] display singular luminescent properties that currently find a number of applications, such as the development of excimer lamps for the elimination of Hg in fluorescent tubes, [18][19][20][21] plasma displays with improved resolution, 22,23 light emitting diode (LED) lamps, 24,25 as well as biolabeling materials. 26,27 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Luminescent Properties of REVO₄–REPO₄ (RE = Y, Eu, Gd, Er, Tm, or Yb) Heteronanostructures: A Promising Class of Phosphors for Excitation from NIR to VUV

et al. 2015

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Despite presenting very similar structural properties, rare earth (RE) phosphate and vanadate solids display different spectroscopic behaviors, which makes the elaboration of REVO 4 -REPO 4 mixed structures an interesting prospect for the design of luminescent materials with improved activity. This work describes the application of a two-step colloidal precipitation approach for the formation of REVO 4 -REPO 4 heteronanostructures and an investigation of their luminescent properties. The growth of the phosphate phase over REVO 4 particles was kinetically evaluated through spectroscopic methodologies comprising the observation of the VO 4 3-→Eu 3+ energy transfer and the absorption of vanadium(V) peroxocomplexes in solution. This confirmed an effective coating of the precursor nanoparticles. In order to obtain materials with enhanced properties, a protected annealing methodology in SiO 2 was applied, leading to highly crystalline nanorods with low degree of aggregation. The final materials display efficient emissions in the red, green, and blue (RGB) regions under VUV, UV or NIR excitation, according to their composition. The described structures are promising for light generation in several different systems and can be tuned to provide RGB emissions as VUV-excited phosphors and as NIR-or UV colloidal luminescent biomarkers.

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“…RE‐doped vanadates, especially RE‐doped yttrium vanadate, such as YVO 4 :Eu, has been a hot research topic recently due to their excellent optical and electrical properties . YVO 4 :Eu is often used as lighting, display and laser materials . Currently, many groups have tried to use YVO 4 :Eu as fluorescence probe .…”

Section: Figurementioning

confidence: 99%

Facile Synthesis of Water-Soluble YVO₄:Eu Nanoparticles for Cu²⁺Detection in Aqueous Solution

Chen

et al. 2016

ChemistrySelect

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The monodisperse and water-soluble YVO 4 :Eu nanoparticles (NPs) with uniform size and shape were synthesized by a facile and environmentally friendly co-precipitation at room temperature with poly(acrylic acid) (PAA) as surfactant and water as solvent. The morphology of the obtained YVO 4 :Eu NPs is sphere-like with a diameter of about 38 nm. Intense red emission from NPs is achieved under ultraviolet (UV) excitation. The intense red emission could be selectively quenched by Cu 2 + ions with limit of detection (LOD) as low as 0.57 mM in aqueous solution. The emission quenched by Cu 2 + ions would be recovered when adding ethylenediamine tetraacetic acid (EDTA), due to the strong interaction between Cu 2 + ions and EDTA. These results indicate that the NPs would be a potential sensor for detecting Cu 2 + ions in aqueous solution.The detection of heavy transition metal ions such as Zn 2 + , Ag + , Cu 2 + and Hg 2 + is of great necessity due to the fact that these transition metal ions are closely related to our health and life. In particular, Cu 2 + ion, as an essential trace element, plays an important role in the process of human metabolism, and deficiency of Cu 2 + ion hinders human health and development. On the other hand, excessive intake of Cu 2 + ion will lead to poisoning, and some diseases may subsequently occur. Furthermore, copper is one of the main pollutants in water, soil and environment. Given these concerns, many methods have been developed to detect Cu 2 + ions, such as atomic absorption spectroscopy, X-ray photoelectron spectroscopy and inductively coupled plasma emission spectrum. [1] These methods are accurate but complex and expensive. Thus, Cu 2 + ion detection based on fluorescent materials, [2][3][4][5][6] including organic dye, semiconductor NPs and rare earth (RE)-based NPs, is developed, which features low cost and visualization. However, these fluorescent materials have drawbacks, such as photobleaching, poor water-solubility and broad fluorescence band, which would inevitably result in poor selectivity, sensitivity and repeatability for Cu 2 + ion detection. Therefore, it is very necessary to synthesize highly water-soluble NPs with excellent fluorescence properties as selective and sensitive Cu 2 + sensors.RE-doped vanadates, especially RE-doped yttrium vanadate, such as YVO 4 :Eu, has been a hot research topic recently due to their excellent optical and electrical properties. [7][8][9] YVO 4 :Eu is often used as lighting, display and laser materials. [10][11][12] Currently, many groups have tried to use YVO 4 :Eu as fluorescence probe. [13][14][15] Our group obtained RE-doped Y(Gd)VO 4 NPs using microwave-assisted hydrothermal method at 180 8C for potential bioimaging and Sanchez et al. developed efficient and selective sensors based on YVO 4 :Eu NPs for detecting H 2 O 2 . [13,14] As is known, the fluorescence efficiency of NPs is closely related to their synthesis. There are many methods for synthesizing YVO 4 :Eu with various sizes and shapes, [16] such as hydrothermal synthesis,...

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Utilization of All Hydrothermally Synthesized Red, Green, Blue Nanophosphors for Fabrication of Highly Transparent Monochromatic and Full‐Color Plasma Display Devices

Cited by 31 publications

References 36 publications

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Synthesis and Luminescent Properties of REVO₄–REPO₄ (RE = Y, Eu, Gd, Er, Tm, or Yb) Heteronanostructures: A Promising Class of Phosphors for Excitation from NIR to VUV

Facile Synthesis of Water-Soluble YVO₄:Eu Nanoparticles for Cu²⁺Detection in Aqueous Solution

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Utilization of All Hydrothermally Synthesized Red, Green, Blue Nanophosphors for Fabrication of Highly Transparent Monochromatic and Full‐Color Plasma Display Devices

Cited by 31 publications

References 36 publications

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Photonic Tuning of the Emission Color of Nanophosphor Films Processed at High Temperature

Synthesis and Luminescent Properties of REVO4–REPO4 (RE = Y, Eu, Gd, Er, Tm, or Yb) Heteronanostructures: A Promising Class of Phosphors for Excitation from NIR to VUV

Facile Synthesis of Water-Soluble YVO4:Eu Nanoparticles for Cu2+Detection in Aqueous Solution

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Synthesis and Luminescent Properties of REVO₄–REPO₄ (RE = Y, Eu, Gd, Er, Tm, or Yb) Heteronanostructures: A Promising Class of Phosphors for Excitation from NIR to VUV

Facile Synthesis of Water-Soluble YVO₄:Eu Nanoparticles for Cu²⁺Detection in Aqueous Solution