Field emission characteristics of CuO nanowires by hydrogen plasma treatment

Sung, Woo-Yong; Kim, Wal-Jun; Lee, Seungmin; Lee, Ho-Young; Kim, Yong-Hyup; Park, Kyung‐Ho; Lee, Soonil

doi:10.1016/j.vacuum.2006.10.002

Cited by 34 publications

(12 citation statements)

References 13 publications

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“…It might be possible to further improve the emission characteristics for industrial applications. Sung et al [14] found that hydrogen plasma treatment of CuO nanowire could enhance the field emission characteristics of the CuO nanowires showing a decrease in turn-on voltage as well as an increase in field enhancement factor. Juan et al [15] also reported that the field emission ability could be improved by simply illuminating CuO nanowires with ultraviolet light.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles

Zhang

et al. 2015

Appl. Phys. A

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A simple and controllable method was reported for the decoration of CuO nanoplate arrays with Au nanoparticles. It had been achieved through the reaction between Sn 2? and AuCl 4 -in the presence of CuO nanoplate arrays. The structure and electron field emission properties of CuO nanoplate arrays decorated with different amounts of Au nanoparticles were investigated. The results demonstrated a remarkable enhancement of field emission performance of CuO nanoplate arrays decorated with Au nanoparticles. The effect of Au amount on the field emission performance was studied in detail, and excellent field emission properties such as a low turn-on electric field of 6.7 V/lm and a high field enhancement factor of 516 could be realized from the optimized sample. On the basis of experimental results, a possible mechanism for the formation of the CuO nanoplate arrays decorated with Au nanoparticles was speculated.

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Section: Introductionmentioning

confidence: 99%

Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles

Zhang

et al. 2015

Appl. Phys. A

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“…With regard to its commercial value and interesting properties, CuO has also been widely exploited in a versatile range of applications such as catalysts [11], magnetic storage media [12], field emission devices [13], gas sensors [14], lithium batteries [15] and solar cells [16].…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis and characterization of hierarchical CuO nanoarchitectures by a simple solution route

Wang¹,

Meng²,

Liu³

et al. 2009

Cryst. Res. Technol.

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The controlled synthesis of hierarchical CuO nanomaterials in a solution phase has been realized with high yield at low temperature using copper acetate hydrate and NaOH as starting materials with the assistance of surfactant under hydrothermal conditions. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet-visible spectroscopy (UV-Vis) were used to characterize the products. It was shown that the hierarchical CuO nanoarchitectures were formed through aggregation of tiny single-crystal CuO nanorods. Experiments demonstrated that the morphology of CuO products was significantly influenced by hydrothermal temperature and reaction time. A rational growth mechanism based on oriented attachment was proposed for the selective formation of the hierarchical CuO nanoarchitectures. Our work demonstrated the growth of hierarchical CuO nanoarchitectures built from onedimentional nanorods through a one-step solution-phase chemical route under controlled conditions. In addition, The UV-Vis spectrum of the hierarchical CuO nanoarchitectures showed large blue shift because of the quantum size effect.

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“…Field emitters based on 1-D materials, such as ZnO, TiO 2 , Ga 2 O 3 , In 2 O 3 , and CuO NWs have been demonstrated. [3][4][5][6][7] CuO, which has a narrow bandgap of 1.2 eV, is a natural p-type material with a monoclinic structure, which makes it useful in many applications such as hightemperature superconductors, catalysis, and gas sensors. There are various methods for synthesizing CuO nanostructures, such as microwave-assisted hydrothermal methods and catalysis methods.…”

Section: Introductionmentioning

confidence: 99%

Electron field emission enhancement of hybrid Cu/CuO nanowires fabricated by rapid thermal reduction of CuO nanowires

et al. 2015

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CuO nanowires (NWs) were grown via the thermal oxidation of Cu film deposited on a CuO/glass template.The reduction of CuO NWs was conducted at 250, 260, 270, and 280 C in H 2 atmosphere. It was found that the surfaces of CuO NWs partially transformed into Cu via rapid thermal annealing (RTA) under H 2 atmosphere, forming hybrid Cu/CuO NWs. The field-enhancement factors of pure CuO NWs and hybrid Cu/CuO NWs prepared at 250, 260, and 270 C were 2624, 5702, 7897, and 79 580, respectively. The results also show that the hybrid Cu/CuO NWs efficiently reduce the turn-on field from 6.4 to 0.9 V mm À1 .

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Field emission characteristics of CuO nanowires by hydrogen plasma treatment

Cited by 34 publications

References 13 publications

Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles

Enhanced electron field emission from CuO nanoplate arrays decorated with Au nanoparticles

Facile synthesis and characterization of hierarchical CuO nanoarchitectures by a simple solution route

Electron field emission enhancement of hybrid Cu/CuO nanowires fabricated by rapid thermal reduction of CuO nanowires

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