Copper oxide nanowires: a review of growth

Filipič, Gregor; Cvelbar, Uroš

doi:10.1088/0957-4484/23/19/194001

Cited by 221 publications

(159 citation statements)

References 92 publications

(159 reference statements)

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“…Interestingly, if the reaction temperature maintained at 60°C, the reaction time was only 10 min but the obtained Cu NWs had an average diameter of 85.14 nm and an average length of 33.39 lm. It has been shown in previous studies that heat is required to accelerate the formation of nanowires [16]. However, excessive heat has been shown to be the cause of formation of relatively short and thick Cu NWs [14].…”

Section: Resultsmentioning

confidence: 99%

A high productivity and speedy synthesis process for copper nanowires via an ethylenediamine-mediated method

Duong

Kim

2017

Int Nano Lett

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Generally, there are two well-known synthetic approaches for copper nanowires (Cu NWs): ethylenediamine (EDA)-mediated synthesis and alkylamine-mediated synthesis. The alkylamine-mediated synthesis produces very high ratio nanowires but requires a special environment and long reaction times, while the EDA-mediated synthesis can be carried out under normal conditions and requires from 30 min to 1 h. However, the Cu NWs produced by this method have an average aspect ratio lower than 500 and are produced in low yield. In this paper, we present a modified EDA-mediated synthesis to improve the yield and reduce the synthesis time. In previous reported EDA-mediated synthesis, sodium hydroxide (NaOH) was used as a pH adjusting element and the reaction was performed at high temperature. By replacing NaOH with potassium hydroxide (KOH) and cooling down the temperature of reaction to room temperature, the synthesis time was reduced to 15 min as well as the productivity of high aspect ratio Cu NWs was increased notably to 80%. Furthermore, the transparent electrodes which were fabricated based on the as-synthesized Cu NWs, exhibited high performance, such as 23.5 X/sq of sheet resistance and 81% of transmittance at k = 550 nm.

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Section: Resultsmentioning

confidence: 99%

A high productivity and speedy synthesis process for copper nanowires via an ethylenediamine-mediated method

Duong

Kim

2017

Int Nano Lett

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“…Quite often, carbon nanotubes, carbon fibers and other more expensive materials have been used as fillers [34] [35]. Cuprous oxide (Cu 2 O) and cupric oxide (CuO) are the two natural oxide of copper [36]. They are both semiconductors with band gaps of 2.0 eV and 1.2 eV respectively.…”

Section: Applicationsmentioning

confidence: 99%

Template-Free Synthesis of Aligned Polyaniline Nanorods/Tubes and Copper/Copper Hydroxide Nanowires for Application as Fillers in Polymer Nanocomposites

Chiguma¹,

Jones²

2018

AMPC

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Aligned polyaniline nanorods were synthesized in the presence of salicylic acid. Nanorods and nanotubes were also formed in the presence of camphorsulfonic acid (CSA) and para-toluenesulfonic acid (pTSA). Electrical conductivity measurements showed that the aligned nanorods had better electrical conductivity than the non-aligned nanostructures. Nanospheres were also observed in some cases. The formation of elongated nanostructures or spheres depended on the aniline monomer to surfactant molar ratio. This method in which nanostructures are formed using soft templates is often referred to as the template-free approach. Our success motivated us to explore the feasibility of obtaining similar metallic nanostructures without the use of a template. We successfully synthesized copper and copper hydroxide nanowires. While the copper nanowires formed as a mesh, the copper hydroxide nanowires formed as winding bundles. Upon switching the order in which the reactants were added, copper hydroxide nanoribbons were formed instead of bundles. Characterization of these nanostructures was done using Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR) and the Four-point probe to measure electrical conductivity. Both metallic and organic nanowires that are fabricated by template-free methods are potential candidates for use as fillers in polymer nanocomposites. Polymer nanocomposites are found to be used in many advanced modern applications such as thermal interface materials in electronic devices which continue to be miniaturized, aerospace engineering where lightweight and robustness are important, sensors, medicine and catalytic activity.

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“…[18][19][20][21][22] It should also be noted that hydrogen can have a similar role in growth of metal oxide nanostructures. [23][24][25][26][27][28][29][30][31][32] The H þ ions are randomly distributed over the simulation plane with the length and width of 44 lm; this plane is located at the sheath edge and is parallel to the substrate. The initial velocities of the ions are equal to the Bohm velocity.…”

Section: Simulationmentioning

confidence: 99%

The effect of microscopic texture on the direct plasma surface passivation of Si solar cells

Mehrabian

Qaemi

et al. 2013

Physics of Plasmas

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The effect of microscopic texture on the direct plasma surface passivation of Si solar cells AbstractTextured silicon surfaces are widely used in manufacturing of solar cells due to increasing the light absorption probability and also the antireflection properties. However, these Si surfaces have a high density of surface defects that need to be passivated. In this study, the effect of the microscopic surface texture on the plasma surface passivation of solar cells is investigated. The movement of 105Hþ ions in the texture-modified plasma sheath is studied by Monte Carlo numerical simulation. The hydrogen ions are driven by the combined electric field of the plasma sheath and the textured surface. The ion dynamics is simulated, and the relative ion distribution over the textured substrate is presented. This distribution can be used to interpret the quality of the Si dangling bonds saturation and consequently, the direct plasma surface passivation. Textured silicon surfaces are widely used in manufacturing of solar cells due to increasing the light absorption probability and also the antireflection properties. However, these Si surfaces have a high density of surface defects that need to be passivated. In this study, the effect of the microscopic surface texture on the plasma surface passivation of solar cells is investigated. The movement of 10 5 H þ ions in the texture-modified plasma sheath is studied by Monte Carlo numerical simulation. The hydrogen ions are driven by the combined electric field of the plasma sheath and the textured surface. The ion dynamics is simulated, and the relative ion distribution over the textured substrate is presented. This distribution can be used to interpret the quality of the Si dangling bonds saturation and consequently, the direct plasma surface passivation. V C 2013 American Institute of Physics. [http://dx

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Copper oxide nanowires: a review of growth

Cited by 221 publications

References 92 publications

A high productivity and speedy synthesis process for copper nanowires via an ethylenediamine-mediated method

A high productivity and speedy synthesis process for copper nanowires via an ethylenediamine-mediated method

Template-Free Synthesis of Aligned Polyaniline Nanorods/Tubes and Copper/Copper Hydroxide Nanowires for Application as Fillers in Polymer Nanocomposites

The effect of microscopic texture on the direct plasma surface passivation of Si solar cells

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