Flexible Transparent Conducting Hybrid Film Using a Surface-Embedded Copper Nanowire Network: A Highly Oxidation-Resistant Copper Nanowire Electrode for Flexible Optoelectronics

Im, Hyeon‐Gyun; Jung, Sunggoo; Jin, Jungho; Lee, Dong Hoon; Lee, Jae Min; Lee, Daewon; Lee, Jung‐Yong; Kim, Il‐Doo; Bae, Byeong‐Soo

doi:10.1021/nn504883m

Cited by 167 publications

(131 citation statements)

References 43 publications

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“…A thin film of helical Cu NWs showed reversible stretchability up to 700% strain [47]. The characteristics of Cu NPs and NWs make them outstanding candidates in different device manufacturing applications that require high electrical conductivity, optical transparency, flexibility, and great oxidation stability [48].…”

Section: Copper Nanoparticles and Nanowires (Cu Nps And Nws)mentioning

confidence: 99%

A Review of Conductive Metal Nanomaterials as Conductive, Transparent, and Flexible Coatings, Thin Films, and Conductive Fillers: Different Deposition Methods and Applications

et al. 2018

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With ever-increasing demand for lightweight, small, and portable devices, the rate of production of electronic and optoelectronic devices is constantly increasing, and alternatives to the current heavy, voluminous, fragile, conductive and transparent materials will inevitably be needed in the future. Conductive metal nanomaterials (such as silver, gold, copper, zinc oxide, aluminum, and tin) and carbon-based conductive materials (carbon nanotubes and graphene) exhibit great promise as alternatives to conventional conductive materials. Successfully incorporating conductive nanomaterials into thin films would combine their excellent electrical and optical properties with versatile mechanical characteristics superior to those of conventional conductive materials. In this review, the different conductive metal nanomaterials are introduced, and the challenges facing methods of thin film deposition and applications of thin films as conductive coatings are investigated.

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Section: Copper Nanoparticles and Nanowires (Cu Nps And Nws)mentioning

confidence: 99%

A Review of Conductive Metal Nanomaterials as Conductive, Transparent, and Flexible Coatings, Thin Films, and Conductive Fillers: Different Deposition Methods and Applications

et al. 2018

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“…2,[14][15][16][17][18] The key merits of metal NW TCE include its excellent and tunable figure of merit (FoM), large-scale processability and, especially, its intrinsic mechanical flexibility, [19][20][21] making this material well suited for flexible optoelectronic devices. However, the typical metal NW (Ag or Cu NW)-based TCEs also present several problematic issues, including surface roughness, weak adhesion to substrates, poor thermal/chemical stability and limited lateral conduction associated with large empty spaces between the metal NWs.…”

Section: Introductionmentioning

confidence: 99%

Hybrid crystalline-ITO/metal nanowire mesh transparent electrodes and their application for highly flexible perovskite solar cells

Jeong

Jin

et al. 2016

NPG Asia Mater

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Here, we propose crystalline indium tin oxide/metal nanowire composite electrode (c-ITO/metal NW-GFRHybrimer) films as a robust platform for flexible optoelectronic devices. A very thin c-ITO overcoating layer was introduced to the surface-embedded metal nanowire (NW) network. The c-ITO/metal NW-GFRHybrimer films exhibited outstanding mechanical flexibility, excellent optoelectrical properties and thermal/chemical robustness. Highly flexible and efficient metal halide perovskite solar cells were fabricated on the films. The devices on the c-ITO/AgNW-and c-ITO/CuNW-GFRHybrimer films exhibited power conversion efficiency values of 14.15% and 12.95%, respectively. A synergetic combination of the thin c-ITO layer and the metal NW mesh transparent conducting electrode will be beneficial for use in flexible optoelectronic applications.

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“…This suggests that EDA acts as a structure directing agent, which is responsible for the formation of nanowires in the solution. [1][2][3][4][5][6][7][8][9][10][11][12][13] As such, anisotropic growth is observed. However, adding any amount of EDA does not ensure complete nanowire formation as seen in Fig.…”

Section: Resultsmentioning

confidence: 96%

“…[1][2][3][4][5][6][7][8][9][10][11] While organic syntheses have produced quality nanowires, they are relatively more expensive than those performed in aqueous media due to high cost of reagents and higher energy requirement to initiate the chemical reaction. [4][5][7][8][9][10][11] The synthesis of Cu nanowires at low temperatures (0-80…”

mentioning

confidence: 99%

Electrochemical Investigation of the Growth of Copper Nanowires in the Presence of Ethylenediamine through Mixed Potential

Tan

Balela

2017

J. Electrochem. Soc.

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Copper (Cu) nanowires about 90 nm in mean diameter and lengths of about 50 μm were successfully synthesized by electroless deposition at 60 • C in the presence of ethylenediamine (EDA). Without addition of EDA, only large Cu particles were formed in the solution. On the other hand, high quality nanowires were formed in the presence of 176 mM EDA. Below this amount, shorter Cu nanowires were observed. The mixed potential shifted to more negative values without EDA, indicating faster reduction rate. It is possible that EDA does not only act as a structure-directing agent, but also slows down Cu deposition. This condition favors formation of long and thin Cu nanowires. Then again, in all EDA concentrations experiment, the mixed potential is below the oxidation-reduction potential of the Cu(II)/Cu redox pair, suggesting Cu depositions occurs instantaneously at 60 • C. Cu nanowire transparent conducting electrode attained a sheet resistance of about 197 sq −1 at a 61% optical transmittance. Copper (Cu) nanowire is gaining a lot of attention due to its viability as a material for transparent conductive film commonly used in various optoelectronic devices, such as flat panel display, organic light emitting diodes (OLED) and touch sensor.1-3 Bulk Cu has high electrical and heat conductivity.4-5 Thus, Cu is traditionally used as wires in mains cables in houses and buildings and as heat exchangers in hot water tanks. Cu is also an abundant element and has excellent recyclability. This makes Cu an attractive alternative for both indium tin oxide (ITO) film and silver (Ag) nanowires for transparent conducting applications in future electronic devices.Solution-phase synthesis of Cu nanowires in both organic and aqueous media are currently being widely used to prepare uniform ultralong nanowire.1-11 While organic syntheses have produced quality nanowires, they are relatively more expensive than those performed in aqueous media due to high cost of reagents and higher energy requirement to initiate the chemical reaction. [4][5][7][8][9][10][11] The synthesis of Cu nanowires at low temperatures (0-80• C), specifically in aqueous solution, has been challenging due to difficulties in promoting nanowire growth and preventing oxidation. [1][2][3]6,12,13 Nevertheless, the use of water and low temperatures would greatly simplify the preparation method for Cu nanowires and make the process commercially feasible.In recent reports, surfactants, such as ethylenediamine (EDA), 1,6,8,12,13 hexadecylamine (HDA) 7 and octadecylamine (ODA), 2,10 have played a significant role in preventing oxidation and controlling the dimension of Cu nanowires prepared in water. Other studies have even utilized two surfactants at the same time to further increase length of the Cu nanowires and improve their surface quality. 3,4,11,14 For example, the diameter of Cu nanowires synthesized with EDA was decreased by about 55% when a small amount of cetyltrimethyl ammonium bromide (CTAB) was added into the solution.14 Additionally, the surface roughness of the Cu ...

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Flexible Transparent Conducting Hybrid Film Using a Surface-Embedded Copper Nanowire Network: A Highly Oxidation-Resistant Copper Nanowire Electrode for Flexible Optoelectronics

Cited by 167 publications

References 43 publications

A Review of Conductive Metal Nanomaterials as Conductive, Transparent, and Flexible Coatings, Thin Films, and Conductive Fillers: Different Deposition Methods and Applications

A Review of Conductive Metal Nanomaterials as Conductive, Transparent, and Flexible Coatings, Thin Films, and Conductive Fillers: Different Deposition Methods and Applications

Hybrid crystalline-ITO/metal nanowire mesh transparent electrodes and their application for highly flexible perovskite solar cells

Electrochemical Investigation of the Growth of Copper Nanowires in the Presence of Ethylenediamine through Mixed Potential

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