Flexible silver-mesh electrodes with moth-eye nanostructures for transmittance enhancement by double-sided roll-to-roll nanoimprint lithography

Yi, Peiyun; Zhang, Chengpeng; Peng, Linfa; Lai, Xinmin

doi:10.1039/c7ra09149d

Cited by 37 publications

(25 citation statements)

References 42 publications

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“…In addition, sugar transfer is capable of transfer patterned Ag nanowire films, such as a Ag nanowire mesh, which can be obtained by using a patterned substrate [27]. However, the transfer of such an electrode is challenging due to the concave-convex structure of the patterned substrate.…”

Section: The Properties Of Transferred Nanomaterialsmentioning

confidence: 99%

Sugar transfer of nanomaterials and flexible electrodes

Hong

Shen

Yang

et al. 2020

International Journal of Smart and Nano Materials

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Nanomaterials with various dimensionalities (e.g., nanowires, nanofilms, two-dimensional materials, and three-dimensional nanostructures) have shown great potential in the recent development of flexible electronics. Conventionally, organic solvents are inevitable while integrating nanomaterials onto flexible substrates, where polymer mediator-assisted transfer techniques are involved. This often damages the flexible substrate and thus hamper the large-scale application of nanomaterials. Here we report a method using watersoluble sugar as a mediator to facilely transfer nanomaterials onto rigid or flexible substrates. This method requires no organic solvent during transfer. More importantly, the morphology and properties of transferred nanomaterials, such as shape, microstructure, resistivity, and transmittance are well preserved on the target substrate. We believe that this universal and rapid transfer method can greatly advance the applications of nanomaterials in the field of flexible devices and beyond. ARTICLE HISTORY

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Section: The Properties Of Transferred Nanomaterialsmentioning

confidence: 99%

Sugar transfer of nanomaterials and flexible electrodes

Hong

Shen

Yang

et al. 2020

International Journal of Smart and Nano Materials

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“…The processability of AgNW networks by R2R was showed by many researchers due to their compatibility with large-area production [81][82][83]. The substrate in R2R coating system is required to have mechanical flexibility and in the form of a long sheet.…”

Section: Roll-to-roll Techniquesmentioning

confidence: 99%

“…Aside from the coating machine, some post-treatment may also be added into the process, such as compressing, heating, UV-curing, chemical welding and drying, as shown in Figure 6(a) [83]. Interestingly, Lai's team produced AgNW electrodes combined with moth-eye nanostructures using R2R techniques and greatly enhanced the transmittance [5,81]. The quality of forming can be influenced by tension, speed, cleaning of the substrate and the removal of static electricity.…”

Section: Roll-to-roll Techniquesmentioning

confidence: 99%

Fabrication and Applications of Flexible Transparent Electrodes Based on Silver Nanowires

Yi¹,

Zhu²,

Deng³

2018

Flexible Electronics

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There has been an explosion of interests in using flexible transparent electrodes for nextgeneration flexible electronics, such as touch panels, flexible lighting, flexible solar cells, and wearable sensors. Silver nanowires (AgNWs) are a promising material for flexible transparent electrodes due to high electrical conductivity, optical transparency and mechanical flexibility. Despite many efforts in this field, the optoelectronic performance of AgNW networks is still not sufficient to replace the present material, indium tin oxide (ITO), due to the high junction resistance. Also, the environmental stability and the mechanical properties need enhancement for future commercialization. Many studies have attempted to overcome such problems by tuning the AgNW synthesis and optimizing the film-forming process. In this chapter, we survey recent progresses of AgNWs in flexible electronics by describing both fabrication and applications of flexible transparent AgNW electrodes. The synthesis of AgNWs and the fabrication of AgNW electrodes will be demonstrated, and the performance enhanced by various methods to suit different applications will be also discussed. Finally, technical challenges and future trends are presented for the application of transparent electrodes in flexible electronics.

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“…Due to wide applications of R2R-UV-NIL in several fields, it has been studied broadly by numerous researchers working in the area of electronic devices [2], polarizers [3], transistors [4], and solar cells [5], etc. On the commercial scale, productivity in the development of flat display panels [6], biotechnological applications [7], and optoelectronic devices [8] is yet to meet with standards. High fidelity and productivity in NIL represent the complete filling of resin in nano/microcavities or exact replication of imprint patterns from the imprinting mold on a PET or polydimethylsiloxane (PDMS) substrate.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Optimization of Roll-to-Roll Ultraviolet Imprint Lithography

2019

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Roll-to-roll ultraviolet (R2R-UV) imprinting is a low-cost and high-throughput method that includes the manufacturing of large-area functional films. However, the quality of the final product is obstructed by the bubble entrapment during the imprinting process. In this study, a multi-phase volume of fluid (VOF) numerical model was used to remove bubble entrapment during the R2R imprinting process, which covered all parameters. This new modified numerical model with open-channel boundary conditions was based on the single zone that contains the direct contact of UV resin with the imprinting mold during the filling process. In addition, this model simulated the UV resin filling into microcavities at the preceding and succeeding ends of the imprinting mold. Different patterns of imprinting mold were considered to enhance the fidelity of R2R-UV imprinting for the comprehensive analysis. The experimental results validated through numerical simulations revealed that the bubble entrapment can be controlled by varying various parameters such as speed of the imprinting system, viscosity, contact angles, and pattern shape. The proposed model may be useful for a continuous bubble-free R2R imprinting process in industrial applications that includes flexible displays and micro/nano-optics.

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Flexible silver-mesh electrodes with moth-eye nanostructures for transmittance enhancement by double-sided roll-to-roll nanoimprint lithography

Abstract: A double-sided R2R NIL system is established and the novel Ag-mesh electrodes with moth-eye nanostructures have been fabricated. An increase of 4.5% in transmittance has been achieved while remaining the sheet resistance at 22.8 ± 1.3 Ω sq−1.

Cited by 37 publications

References 42 publications

Sugar transfer of nanomaterials and flexible electrodes

Sugar transfer of nanomaterials and flexible electrodes

Fabrication and Applications of Flexible Transparent Electrodes Based on Silver Nanowires

Numerical Study on the Optimization of Roll-to-Roll Ultraviolet Imprint Lithography

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