Electron field emitters made of 3-D CuO nanowires on flexible silicon substrate fabricated by heating Cu rods with through silicon via process

Juan, Yen-Ming; Chang, Shoou‐Jinn; Hsueh, Hsin Ta; Wang, S. H.; Cheng, Teng; Huang, Shih-Wei; Hsueh, Ting-Jen; Yeh, Yu-Ming; Hsu, Cheng-Liang

doi:10.1039/c6ra07781a

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…Among various oxide semiconductor materials, CuO is a common metal oxide, which is an intrinsic p-type semiconductor and shows a small band gap (1.2 eV) [17]. So far, CuO has been substantially explored for various fields of applications, such as field emitters, photocatalysis, and gas sensing [18,19,20,21,22,23]. Moreover, CuO has the advantage of its large abundance in nature, its low cost, its inability to pollute, and its simple synthesis like ZnO [24].…”

Section: Introductionmentioning

confidence: 99%

CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance

Zhao

Shirolkar

et al. 2019

Nanomaterials

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CuO/ZnO heterojunction nanorod arrays were synthesized using a facile photochemical deposition strategy. The morphology of CuO was related to the concentration of Cu2+ in the Cu(NO3)2 solution, UV illumination time, and the air annealing temperature. A possible reaction mechanism was proposed. In the photochemical deposition process, the OH− was generated in the vicinity of the ZnO nanorod arrays and reacted with Cu2+ and NO3− in the solution to form Cu2(NO3)(OH)3/ZnO heterojunction nanorod arrays firstly, which were converted into CuO/ZnO heterojunction nanorod arrays completely after air annealing at a low temperature. The fabricated CuO/ZnO heterojunction nanorod arrays exhibits a well-defined rectifying characteristic and an improved photo-response performance compared with pure ZnO nanorod arrays.

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Section: Introductionmentioning

confidence: 99%

CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance

Zhao

Shirolkar

et al. 2019

Nanomaterials

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“…Copper oxide nanowires [124] 3.5 --Carbon nanocups [125] 2.30 1.8 mA cm −2 @ 4.2 V µm −1 500 Nitrogenated amorphous carbon films [126] 4.9 --W 18 O 49 nanowires [127] 5.3 11.0 60 MoS 2 bilayers [128] 230 --CuInTe 2 nanorods [129] 0.92 1.74 210 CuO/Cu 2 O composite nanowires [130] 15 -Al-doped SiC nanowires [131] 0.45 10 60 Polypyrrole/Tin oxide hybrids [132] 1.5 --MEII-Au HDG/Au(Si) [99] 1.6 5.4 @ 2.6 V µm −1 1825 groups has highlighted the function of gold nanoparticles in catalytically inducing the emergence of nanocarbon materials [151][152][153]. Carbon being highly soluble in Au nanoparticles may be the reason behind the catalytic activity.…”

Section: Catalytic Activity Of Goldmentioning

confidence: 99%

Diamond-gold nanohybrids – an enhanced cathode material for field electron emitter applications

Sankaran

Kurian

Sundaravel

et al. 2020

J. Phys. D: Appl. Phys.

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This work aims to review the enhancement of electrical conductivity and field electron emission (FEE) properties of ultrananocrystalline diamond (UNCD) films as a function of gold ion implantation content. Au has been employed in UNCD films as an implanted species as well as an interlayer between diamond film and substrate. In the initial part of the review UNCD films are briefly introduced. The focus is on their FEE properties and multiple strategies employed for enhancing these properties using ion-implantation with the goal to obtain a better cathode material. A comparison of the characteristics of the UNCD films implanted with Au and other species after studying the modification of the microstructure and emission properties of the Au-implanted UNCD films is then provided. Subsequently, the use of a thin Au coating on silicon substrates covered by UNCD or hybrid granular structured diamond films is discussed. The Si diffusion through the Au-Si eutectic interface results in a SiC layer. This facilitates the nucleation of diamond clusters, thereby suppressing the development of the carbon layer which is amorphous and electrically resistive, resulting in improved FEE characteristics. Finally, in the third and final part, the combined effects of Au-ion implantation (including multi-energy Au ion implantation) and Au-interlayer is discussed. Based on the obtained results, the catalytic activity of gold for improving the electrical conductivity and the FEE properties of diamond films is highlighted.

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Fabrication of polyhedral Cu–Zn oxide nanoparticles by dealloying and anodic oxidation of German silver alloy for photoelectrochemical water splitting

Bahnasawy

Elbanna

Ramadan

et al. 2022

Sci Rep

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A significant effort has been dedicated to the synthesis of Cu–Zn oxide nanoparticles as a robust photocathode material for photoelectrochemical water splitting. Cu–Zn oxide nanoparticles were formed by controlled anodization of German silver (Cu–Zn–Ni) alloy in an aqueous electrolyte. Scanning electron microscopy (SEM) demonstrates the dependence of the obtained nanostructures on the anodization time. The X-ray diffraction (XRD) patterns showed the formation of copper oxide (CuO) and zinc oxide (ZnO) nanoparticles with good stability. This was also confirmed by the compositional X-ray photoelectron spectroscopy (XPS) analysis. The obtained polyhedral nanoparticles showed high optical activity with adequate bandgap energy. These optimized nanoparticles achieved boosted photocurrent of − 0.55 mA/cm2 at − 0.6 V vs. SCE under AM 1.5 illumination, confirming the role of the optimized dealloying and thermal treatment in tuning the photoelectrochemical performance of the material.

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Electron field emitters made of 3-D CuO nanowires on flexible silicon substrate fabricated by heating Cu rods with through silicon via process

Abstract: Cu rods with a diameter of 10 μm on a flexible silicon substrate were fabricated using the through silicon via (TSV) process and chemical mechanical polishing (CMP).

Cited by 4 publications

References 28 publications

CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance

CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance

Diamond-gold nanohybrids – an enhanced cathode material for field electron emitter applications

Fabrication of polyhedral Cu–Zn oxide nanoparticles by dealloying and anodic oxidation of German silver alloy for photoelectrochemical water splitting

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