Flexible, Transparent, Thickness-Controllable SWCNT/PEDOT:PSS Hybrid Films Based on Coffee-Ring Lithography for Functional Noncontact Sensing Device

Tai, Yanlong; Yang, Zhen‐Guo

doi:10.1021/acs.langmuir.5b03449

Cited by 41 publications

(32 citation statements)

References 47 publications

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“…Previous research has developed various methods to fabricate, [14][15][16][17] coat, [18][19][20] and treat [21][22][23][24][25] AgNWs. Previous research has developed various methods to fabricate, [14][15][16][17] coat, [18][19][20] and treat [21][22][23][24][25] AgNWs.…”

mentioning

confidence: 99%

Silver‐Nanowire Mesh‐Structured Transparent Conductive Film with Improved Transparent Conductive Properties and Mechanical Performance

Zhao

et al. 2019

Adv Materials Technologies

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Silver nanowires (AgNWs) are ideal materials for fabricating flexible TCFs on various types of substrates because of the high conductivity and good flexibility of silver. Previous research has developed various methods to fabricate, [14][15][16][17] coat, [18][19][20] and treat [21][22][23][24][25] AgNWs. In most studies, AgNWs are used to form random networks, and the size of the AgNWs mostly determines the properties of the TCF. [26] Because a metal grid can be used as a TCF, this study will determine whether a mesh structure is useful for improving the properties of an AgNW network. The presence of holes can enhance the transmittance of the network, and as the AgNWs are restrained to the mesh region, it is easier for an individual wire to contact other wires. In addition, the mesh structure may improve the flexibility of the network. [27] Findings from previous studies support the methods proposed in this study. Toakuno [28] et al. used a bubble template to fabricate meshstructured Ag nanowires. By adding a surfactant to the dispersion of AgNWs and shaking the solution, numerous bubbles were generated, and this became the template for patterning the AgNW network. The transparent conductive performance of the bubble mesh-structured AgNW film was superior to that of a random AgNW network.Similarly, Kwon et al. [29] used a liquid template to generate a mesh structure. A water insoluble liquid was mixed with water, and an intermediate agent was used to stabilize the dispersion. When the dispersion was coated onto a substrate, the intermediate agent evaporated first, leading to the separation of the water and the water insoluble liquid, thus forming a mesh structure.Ha and Jo [30] obtained AgNW grids using a micromoldingin-capillary technique and combined a random network with a grid-patterned network. The hybrid electrodes exhibited a significantly improved sheet resistance, slightly decreased transmittance, and better mechanical flexibility compared to those of the random network.A mesh structure may enhance the transparent conductive properties and mechanical performance of the AgNW network. Physical models of many different types of TCFs have been studied, [31] but there is still a lack of a quantitative study, especially for mesh-structured nanowire networks.In this study, AgNWs were synthesized by a modified polyol method, [32] and a simple template method was used to fabricate Silver nanowires (AgNWs) are an optimum material for fabricating flexible transparent conductive films (TCFs), which are the primary materials in flexible optoelectronic devices. In most studies, TCFs are produced by coating AgNW onto a substrate to form a random network. However, according to some reports, a mesh-structured network may allow superior performance. The effects of a mesh structure are quantitatively studied, a simple calculation method to derive property curves of mesh-structured networks from those of random networks is presented, and a rule to fabricate mesh-structured TCFs with improved performance is determined. Diff...

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confidence: 99%

Silver‐Nanowire Mesh‐Structured Transparent Conductive Film with Improved Transparent Conductive Properties and Mechanical Performance

Zhao

et al. 2019

Adv Materials Technologies

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“…[40,41] Note that the SWCNTs used here were modified with a 2-4 nm coating of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS). [42,43] Although PEDOT/PSS itself presents some intrinsic piezoresistive 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 behavior, previous work has verified that the majority of the piezoresistivity results from the change in distance between nanoparticles that takes place under a mechanical strain. [44] Moreover, these findings were further exhibited through a closed circuit (voltage = 3 V) containing a light-emitting diode (LED) and a conductive thread (length = 2 cm, total resistance = 1.23 kohm after drying).…”

Section: The Sensing Mechanism Of Swcnt-coated Threadsmentioning

confidence: 99%

Double‐Twisted Conductive Smart Threads Comprising a Homogeneously and a Gradient‐Coated Thread for Multidimensional Flexible Pressure‐Sensing Devices

Tai

Lubineau

2016

Adv Funct Materials

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Fiber‐based, flexible pressure‐sensing systems have attracted attention recently due to their promising application as electronic skins. Here, a new kind of flexible pressure‐sensing device based on a polydimethylsiloxane membrane instrumented with double‐twisted smart threads (DTSTs) is reported. DTSTs are made of two conductive threads obtained by coating cotton threads with carbon nanotubes. One thread is coated with a homogeneous thickness of single‐walled carbon nanotubes (SWCNTs) to detect the intensity of an applied load and the other is coated with a graded thickness of SWCNTs to identify the position of the load along the thread. The mechanism and capacity of DTSTs to accurately sense an applied load are systematically analyzed. Results demonstrate that the fabricated 1D, 2D, and 3D sensing devices can be used to predict both the intensity and the position of an applied load. The sensors feature high sensitivity (between ≈0.1% and 1.56% kPa) and tunable resolution, good cycling resilience (>104 cycles), and a short response time (minimum 2.5 Hz). The presented strategy is a viable alternative for the design of simple, low‐cost pressure sensors.

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“…For instance, the conductivity of the film can reach 1500 S/cm . Because of these outstanding properties, PEDOT films are not only used as antistatic films with a high conductivity but also manufactured as conductive fibers and coatings for photographic films . Nevertheless, numerous application possibilities require excellent merits, including a high conductivity, long‐time stability, transmittance, and water resistance.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of a transparent poly(3,4‐ethylene dioxythiophene)–poly(p‐styrene sulfonate‐co‐acrylic acid sodium) film with a high stability and water resistance

Cai

Guo

et al. 2017

J of Applied Polymer Sci

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Poly(p‐styrene sulfonate‐co‐acrylic acid sodium) (PSA) from the copolymerization of acrylic acid sodium and p‐styrene sulfonate monomers were used to dope poly(3,4‐ethylene dioxythiophene) (PEDOT) to generate PEDOT–PSA antistatic dispersions. Compared to those of the PEDOT–poly(p‐styrene sulfonate sodium) (PSS), the physical and electrical properties of the PEDOT–PSA conductive liquids were much better. The PEDOT–PSA films possessed a better water resistance without a decrease in the conductivity. The sheet resistance of the PEDOT–PSA–poly(ethylene terephthalate) (PET) films was about 1.5 × 104 Ω/sq with a 100 nm thickness, the same as the PEDOT–PSS–PET films. The transmittance of the PEDOT–PSA–PET films exceeded 88%. Furthermore, the environmental dispersity of the PEDOT–PSA antistatic dispersion was apparently improved by the dopant PSA so that the stability was extraordinarily promoted. Meanwhile, the water resistances of the PEDOT–PSA–PET and PEDOT–PSA films were also enhanced. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45163.

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Flexible, Transparent, Thickness-Controllable SWCNT/PEDOT:PSS Hybrid Films Based on Coffee-Ring Lithography for Functional Noncontact Sensing Device

Cited by 41 publications

References 47 publications

Silver‐Nanowire Mesh‐Structured Transparent Conductive Film with Improved Transparent Conductive Properties and Mechanical Performance

Silver‐Nanowire Mesh‐Structured Transparent Conductive Film with Improved Transparent Conductive Properties and Mechanical Performance

Double‐Twisted Conductive Smart Threads Comprising a Homogeneously and a Gradient‐Coated Thread for Multidimensional Flexible Pressure‐Sensing Devices

Preparation and performance of a transparent poly(3,4‐ethylene dioxythiophene)–poly(p‐styrene sulfonate‐co‐acrylic acid sodium) film with a high stability and water resistance

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