Transparent, dip-coated silver nanowire electrodes for small molecule organic solar cells

Sachse, Christoph; Müller‐Meskamp, Lars; Bormann, Ludwig; Kim, Yong Hyun; Lehnert, Fritz; Philipp, André; Beyer, Beatrice; Leo, Karl

doi:10.1016/j.orgel.2012.09.032

Cited by 88 publications

(72 citation statements)

References 23 publications

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“…Among them, random networks of silver nanowires (Ag NWs) are considered to be the most promising candidate for solution processing, because the opto-electric performance of Ag NW films is comparable to ITO films, and Ag NWs can be dispersed in many well-known solvents without difficulty. 2,[7][8][9][10][11] Some are successfully used in various applications, e.g., a solution-processed solar cell, 12 and are commercially available for touch screen applications. 13 Numerous studies have been done to correlate the nanowire properties and the microscopic network structure of the film to their opto-electric properties.…”

Section: Introductionmentioning

confidence: 99%

Analysis of transparent conductive silver nanowire films from dip coating flow

Ahn

Kim

et al. 2015

J Coat Technol Res

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Silver nanowires are a promising nanomaterial for the fabrication of transparent flexible conductive films. Due to their fascinating properties, numerous studies have been done to determine the relationship among nanowire properties, micro-network structure, and opto-electronic properties, such as transparency and conductivity. 1,2 However, most previous studies have used methods that are not suitable for mass production, such as vacuum filtration. To produce the film economically, it is advisable to use a solution process, e.g., a liquid coating method. In this study, we use a simple dip coating method to produce the film using a coating solution, which disperses nanowires in isopropyl alcohol. The amount of nanowires on the film is carefully controlled by the wet film thickness predicted from computational analysis. The important parameters of nanowire networks, such as the diameter, the aspect ratio, and the areal coverage of nanowires are measured directly from image analysis of the electron microscopy images. Finally, the relationship among those parameters and opto-electronic properties is examined in detail.

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Section: Introductionmentioning

confidence: 99%

Analysis of transparent conductive silver nanowire films from dip coating flow

Ahn

Kim

et al. 2015

J Coat Technol Res

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“…Scientists have made much progress to improve the performance of AgNWs networks electrodes and investigated many methods to prepare AgNWs networks such as spin-coating [11], spray-coating [12,13], dip-coating [14], vacuum filtration [15] and meyer rod [16] methods. Sukanta et al [17] have fabricated transparent, flexible and uniform AgNWs networks with excellent optical transmittance (T) and sheet resistance (R S ) of 85 % and 13 X sq -1 , which are steady under folding for 1000 cycles.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive study of transparent conductive silver nanowires films with mixed cellulose ester as matrix

Xie

Jun

et al. 2015

J Mater Sci: Mater Electron

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Silver nanowires (AgNWs) with 200-570 nm in diameter and 20-70 lm in length were successfully synthesized by a polyol process. The transparent conductive and flexible AgNWs films were fabricated with using the mixed cellulose eater (MCE) as matrix by the improved vacuum filtration process. Then, the optical and electrical and mechanical properties of the AgNWs-MCE films were investigated. For the AgNWs-MCE film produced with a deposition density of 152 mg m -2 , the optical transmission at 550 nm is 81.98 % with R s around 312 X sq -1 , whereas at a deposition density of 190 mg m -2 an AgNWs-MCE film with an optical transmission of 79.0 % at 550 nm and R s around 16.6 X sq -1 . There is little overt increase in R s of the AgNWS-MCE film after tape tests for 200 times. The bending test indicated that the change in R s of AgNWs-MCE film is less than 8 % even after 200 cycles of compressive or tensile bending. The excellent mechanical properties of the AgNWs-MCE film can be attributed to the burying of the AgNWs film at the surface of MCEs. Two 0.5 W LED lamps with series fixed on the surface of AgNWs-MCE film with conductive adhesive were lighted, and they were still luminous after bent.

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“…5,6 Therefore, alternatives to ITO films have attracted lots of attention in recent two decades. [7][8][9][10][11][12][13][14][15][16][17] Up to now, the alternatives emerging to replace ITO films can be divided into three categories: firstly, less indium or indium-free doped oxide films, such as FTO, doped ZnO or TiO 2 , and some multi-layer combinations of different oxide films; 7-9 secondly, ultrathin metal films, such as Cu or Ag films; thirdly, 1-dimensional (1D) nanostructures, 10-13 such as carbon nanotubes, 11,12 metal mesh, 13,14 and metal nanowire networks. [15][16][17] It is worth noting that graphene film has a potential to replace ITO if the grain-boundary scattering and doping issues are thoroughly addressed.…”

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confidence: 99%

Ultra-flexible and robust transparent electrodes by embedding silver nanowires into polyimide matrix

Zhao

Wang

et al. 2018

AIP Advances

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Silver nanowires (AgNWs) percolated films have been extensively considered as promising candidates for alternative transparent electrodes. However, due to their high surface roughness, poor adhesion and thermal stability, their practical use in transparent conducting film application is still heavily limited. In this paper, we report ultra-flexible transparent electrodes by imbedding AgNWs into polyimide (PI) thin films to achieve smooth surface, pronounced thermal stability, and high adhesion. Besides the excellent electrical conductivity of about 7-13Ω/□ in sheet resistance, the obtained AgNWs/PI films have excellent transparency and mechanical resilience due to the intrinsic physical and chemical properties of PI organic polymer. By embedding AgNWs into PI, the surface roughness of AgNWs percolated films can be reduced from 39.5 nm to 6 nm (RMS values), and the adhesion of AgNWs to PI is greatly enhanced if compared to the case of only AgNWs onto glass or plastic substrates. Additionally, the AgNWs/PI films show extraordinary stability in terms of electrical conductivity after the arbitrary twisting and thermal heating test, respectively, which are demonstrated by the electrical-thermal measurements via thermal IR imaging.

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Transparent, dip-coated silver nanowire electrodes for small molecule organic solar cells

Cited by 88 publications

References 23 publications

Analysis of transparent conductive silver nanowire films from dip coating flow

Analysis of transparent conductive silver nanowire films from dip coating flow

A comprehensive study of transparent conductive silver nanowires films with mixed cellulose ester as matrix

Ultra-flexible and robust transparent electrodes by embedding silver nanowires into polyimide matrix

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