Nonthermal crystal bridging of ZnO nanoparticles by nonequilibrium excitation reaction of electrons and plasma without cross-linking agent on plastic substrate

Shimoi, Norihiro; Tanaka, Shun Ichiro

doi:10.1016/j.jallcom.2019.05.139

Cited by 6 publications

(11 citation statements)

References 38 publications

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“…In this study, we have evaluated the basic physical properties of this thin film such as carrier density, hole mobility, resistivity and optical transmittance. The results are shown in Figure 4 for carrier density, hole mobility and resistivity, and Figure 5 for transmittance [26]. We have succeeded in finding that each property differs depending on the electron beam irradiation energy.…”

Section: (B) Hr-tem Image Of Hc-swcnts After Crystallization (C) Fe Characteristics Between Cathode and Anode Electrodes And Image Of Ligmentioning

confidence: 81%

“…We have developed a technique to fabricate ZnO thin films on thin PET substrates using FE electron beam irradiation as a non-equilibrium reaction field as shown in Figure 3a. The ZnO thin films were prepared by wet coating and electron beam irradiation methods [26,27]. In this process, the thickness of the ZnO film was controlled from 100 nm to 10 μm.…”

Section: Non-thermal Formation Of Zno Film On Plastic Film Substrate By Fe Electron Beam Irradiationmentioning

confidence: 99%

“…The macrocrystalline structure of ZnO thin film formed by electron beam irradiation was analyzed by X-Ray diffraction (XRD; Rigaku) for its dependence on electron beam irradiation energy (Figure 8 [26]). It was found that the grain size of ZnOderived single crystals increased with increasing electron beam energy, indicating that the electron beam irradiation energy promoted grain cross-linking, i.e., crystal growth.…”

Section: Crystallization Process Of Zno Particlesmentioning

confidence: 99%

“…Figure 9 shows the results of X-ray Photoelectron Spectroscopy (XPS; Bruker) analysis of ZnO particles only. The binding energy of Zn intercalated in the particle surface was evaluated [26]. The ZnO particles with Zn ions adsorbed from Zn(AcAc) from plasma treatment were irradiated with electron beam and it was found that the binding energy of Zn2p3/2 and Zn2p1/2 shifted to higher energy side with the increase of electron beam energy.…”

Section: Crystallization Process Of Zno Particlesmentioning

confidence: 99%

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Nonthermal Crystalline Forming of Ceramic Nanoparticles by Non-Equilibrium Excitation Reaction Field of Electron

Shimoi¹

2021

Nanocrystals [Working Title]

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In this work, we have discovered a method of forming ZnO thin films with high mobility, high carrier density and low resistivity on plastic (PET) films using non-equilibrium reaction fields, even when the films are deposited without heating, and we have also found a thin film formation technique using a wet process that is different from conventional deposition techniques. The field emission electron-beam irradiation treatment energetically activates the surface of ZnO particles and decomposes each ZnO particles. The energy transfer between zinc ions and ZnO surface and the oxygen present in the atmosphere around the ZnO particles induce the oxidation of zinc. In addition, the ZnO thin films obtained in this study successfully possess high functional thin films with high electrical properties, including high hole mobility of 208.6 cm2/Vs, despite being on PET film substrates. These results contribute to the discovery of a mechanism to create highly functional oxide thin films using a simple two-dimensional process without any heat treatment on the substrate or during film deposition. In addition, we have elucidated the interfacial phenomena and crosslinking mechanisms that occur during the bonding of metal oxide particles, and understood the interfacial physical properties and their effects on the electronic structure. and surface/interface control, and control of higher-order functional properties in metal/ceramics/semiconductor composites, and contribute to the provision of next-generation nanodevice components in a broad sense.

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Section: (B) Hr-tem Image Of Hc-swcnts After Crystallization (C) Fe Characteristics Between Cathode and Anode Electrodes And Image Of Ligmentioning

confidence: 81%

Section: Non-thermal Formation Of Zno Film On Plastic Film Substrate By Fe Electron Beam Irradiationmentioning

confidence: 99%

Section: Crystallization Process Of Zno Particlesmentioning

confidence: 99%

Section: Crystallization Process Of Zno Particlesmentioning

confidence: 99%

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Nonthermal Crystalline Forming of Ceramic Nanoparticles by Non-Equilibrium Excitation Reaction Field of Electron

Shimoi¹

2021

Nanocrystals [Working Title]

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“…A nonequilibrium excitation reaction field was found to be a reaction field in which ceramic nanoparticles can be induced and manipulated by a focused electron beam and ions whose acceleration energy was controlled at the keV level. , A beam and ions have conventionally been used in research on lattice defects in materials and surface modification. In the irradiation space, studies of a bottom-up specific reaction for the development of various nano- and microstructures have been carried out. , In this study, we developed a technique for controlling the atomic arrangement by crystal bridging between a ceramic (ZnO) and carbon to fabricate novel composite materials with a low-speed field emission (FE) electron beam − as a nonequilibrium excitation reaction field.…”

Section: Introductionmentioning

confidence: 99%

Nanometer-Thick Crystalline Carbon Films Having a Spinel Structure Grown on ZnO Substrates: Implications for New Ceramic–Carbon Composition

Shimoi

2020

ACS Omega

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I developed a bottom-up process of crystal growth using a field emission (FE) electron beam without transfer of heat energy. In this study, highly crystalline single-walled carbon nanotubes were used as the FE electron source. Acetylene was irradiated with an electron beam of high-resolution energy emitted from the electron source. Then, zinc oxide (ZnO) was irradiated with the carbon-based ions dissociated from the acetylene and electron beam, which formed a nonequilibrium excitation reaction field. As a result, a crystalline carbon thin film with a spinel-like structure different from the structures of graphite and diamond was grown on the ZnO surface. It is considered that the carbon film can be formed on substrates with a periodic crystal structure, not only ZnO. I confirmed that a carbon film with a periodic crystal structure independent of the crystal structure of the underlying substrate was grown, which bridged with the substrate. Thus, I have established a technique of crystal bridging between a ceramic and carbon for the first time to the best of our knowledge.

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A self-powered UV photodetector based on the hydrovoltaic and photoelectric coupling properties of ZnO nanowire arrays

Guan

Mao

Zhong

et al. 2021

Journal of Alloys and Compounds

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Nonthermal crystal bridging of ZnO nanoparticles by nonequilibrium excitation reaction of electrons and plasma without cross-linking agent on plastic substrate

Cited by 6 publications

References 38 publications

Nonthermal Crystalline Forming of Ceramic Nanoparticles by Non-Equilibrium Excitation Reaction Field of Electron

Nonthermal Crystalline Forming of Ceramic Nanoparticles by Non-Equilibrium Excitation Reaction Field of Electron

Nanometer-Thick Crystalline Carbon Films Having a Spinel Structure Grown on ZnO Substrates: Implications for New Ceramic–Carbon Composition

A self-powered UV photodetector based on the hydrovoltaic and photoelectric coupling properties of ZnO nanowire arrays

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