Electronic properties of transparent nano-composite electrodes for application in flexible electronics

Triambulo, Ross E.; Park, Jin Woo

doi:10.1016/j.cap.2015.03.010

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…The OLEDs functioned well on the PDMS composite electrodes, as shown in Figure (b,c); however, the turn‐on voltage ( V on ) at 1 cd/m 2 was measured as 12.6 V, which is higher than that of devices fabricated on ITO glass . The high V on of the OLEDs on PDMS is attributable to the contact area between the AgNWs and the semiconducting polymer layer being reduced as the AgNWs are embedded in PDMS and to the hole mobility of the composite electrode being low because of the increased interfacial area . We intend to investigate these issues in future works.…”

Section: Resultsmentioning

confidence: 92%

Silver nanowire network embedded in polydimethylsiloxane as stretchable, transparent, and conductive substrates

Kim

Park

Jeong

et al. 2016

J of Applied Polymer Sci

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Highly stretchable transparent conductors where Ag nanowire networks (AgNWs) are reliably embedded into a polydimethylsiloxane (PDMS) substrate are presented. In spite of the weak physical and chemical interaction between Ag nanowires and PDMS, a significantly high transfer efficiency and uniform embedding of AgNW percolation mesh electrodes into PDMS was achieved by simply coating aerogels onto the AgNWs and using water‐assisted transfer. By the failure‐free transfer and reliable bonding with the substrate, the conductive PDMS with embedded AgNWs that exhibits a sheet resistance (Rs) of 15 Ω/sq and 80% optical transmittance (T) are reported here. The PDMS films accommodate tensile strains up to 70% and a cyclic strain of 25% for more than 100 cycles, with subsequent Rs values as low as 90 and 27 Ω/sq, respectively. The T of this conductive PDMS is more than 25% higher than that of networks of CNTs, Cu nanowires, and hybrid composites of CNTs and graphene embedded in elastomer films such as PDMS, polyurethane, and Ecoflex. The simple and reproducible fabrication allows the extensive study and optimization of the stretchability of the meanders in terms of humidity, thickness, and substrate. The results provide new insights for designing stretchable electronics. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43830.

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Section: Resultsmentioning

confidence: 92%

Silver nanowire network embedded in polydimethylsiloxane as stretchable, transparent, and conductive substrates

Kim

Park

Jeong

et al. 2016

J of Applied Polymer Sci

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“…However, the turn-on V (V on ) at 1 cd/m 2 was measured to be as high as 13.8 V. According to Figure 9b, the maximum L is smaller by more than an order of magnitude than those on the ITO glass and the composite electrodes with AgNWs. 18 These differences may be the result of multiple reasons, with the primary causes attributed to the optical loss due to absorption by AgNWs within the visible ranges, low contact area between AgNWs and active polymer layers because of embedded AgNWs, and the low hole mobility of AgNWs; 12,23 these issues should be addressed in our ongoing works. Figure 9c is the image captured from video clips that recorded the performances of the f-OLEDs.…”

Section: Resultsmentioning

confidence: 99%

Foldable Transparent Substrates with Embedded Electrodes for Flexible Electronics

Kim

Park

2015

ACS Appl. Mater. Interfaces

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We present highly flexible transparent electrodes composed of silver nanowire (AgNW) networks and silica aerogels embedded into UV-curable adhesive photopolymers (APPs). Because the aerogels have an extremely high surface-to-volume ratio, the enhanced van der Waals forces of the aerogel surfaces result in more AgNWs being uniformly coated onto a release substrate and embedded into the APP when mixed with an AgNW solution at a fixed concentration. The uniform distribution of the embedded composite electrodes of AgNWs and aerogels was verified by the Joule heating test. The APP with the composite electrodes has a lower sheet resistance (Rs) and a better mechanical stability compared with APP without aerogels. The APP with the embedded electrodes is a freestanding flexible substrate and can be used as an electrode coating on a polymer substrate, such as polydimethylsiloxane and polyethylene terephthalate. On the basis of the bending test results, the APPs with composite electrodes were sufficiently flexible to withstand a 1 mm bending radius (rb) and could be foldable with a slight change in Rs. Organic light emitting diodes were successfully fabricated on the APP with the composite electrodes, indicating the strong potential of the proposed flexible TEs for application as highly flexible transparent conductive substrates.

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“…Indium tin oxide (ITO) is commonly used as a transparent conductive lm (TCF) due to its high electrical conductivity and optical transparency. [1][2][3] However, the brittle ceramic structure, poor compatibility with organic materials, and the growing cost of indium seriously limit the use of ITO in TCFs, especially in emerging exible electronics and large-area applications. [4][5][6][7] Therefore, there are various ITO alternative materials used to prepare exible TCFs, such as new oxide lms, 8 conducting polymers, 9 carbon nanotubes, 10,11 graphene-based lms, 12 silver nanowires (AgNWs), [13][14][15] and hybrids of these.…”

Section: Introductionmentioning

confidence: 99%

Solution-processed multifunctional transparent conductive films based on long silver nanowires/polyimide structure with highly thermostable and antibacterial properties

Shen

et al. 2017

RSC Adv.

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Electronic properties of transparent nano-composite electrodes for application in flexible electronics

Cited by 6 publications

References 14 publications

Silver nanowire network embedded in polydimethylsiloxane as stretchable, transparent, and conductive substrates

Silver nanowire network embedded in polydimethylsiloxane as stretchable, transparent, and conductive substrates

Foldable Transparent Substrates with Embedded Electrodes for Flexible Electronics

Solution-processed multifunctional transparent conductive films based on long silver nanowires/polyimide structure with highly thermostable and antibacterial properties

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