UV-Cured Inkjet-Printed Silver Gate Electrode with Low Electrical Resistivity

Ning, Honglong; Zhou, Yicong; Fang, Zhiqiang; Yao, Rihui; Tao, Ruiqiang; Chen, Jianqiu; Cai, Wei; Zhu, Zhennan; Yang, Caigui; Wei, Jiangxiong; Wang, Lei; Peng, Junbiao

doi:10.1186/s11671-017-2300-9

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…Our previous work [ 25 ] had studied the effects of UV curing on the electrical resistivity of silver films based on NP ink, and the silver film with a low electrical resistivity of ~6.7 × 10 −8 Ω·m was obtained at D = 25 cm for 480 s. The electrical resistivity of the silver film based on NP ink was about 2.5 × 10 −7 Ω·m when it was cured by UV at D = 37 cm for 180 s. By contrast, when D = 37 cm, the silver film based on MOD ink was not conductive until the UV curing time was increased from 270 to 480 s, as shown in Figure 3 a. For the precursor in MOD, the process of decomposing and forming silver particles took a lot of energy (UV irradiation: 600 W, D = 23 cm for 480 s), so it needed plenty of time (~480 s) to form the conductive film when D was large.…”

Section: Resultsmentioning

confidence: 99%

Study of Inkjet-Printed Silver Films Based on Nanoparticles and Metal-Organic Decomposition Inks with Different Curing Methods

Xiao

Zhou

Gan³

et al. 2020

Micromachines

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Currently, inkjet printing conductive films have attracted more and more attention in the field of electronic device. Here, the inkjet-printed silver thin films based on nanoparticles (NP) ink and metal-organic decomposition (MOD) ink were cured by the UV curing method and heat curing method. We not only compared the electrical resistivity and adhesion strength of two types of silver films, but also studied the effect of different curing methods on silver films. The silver films based on NP ink had good adhesion strength with a lowest electrical resistivity of 3.7 × 10−8 Ω·m. However, the silver film based on MOD ink had terrible adhesion strength with a lowest electrical resistivity of 2 × 10−8 Ω·m. Furthermore, we found a simple way to improve the terrible adhesion strength of silver films based on MOD ink and tried to figure out the mechanisms. This work offers a further understanding of the different performances of two types of silver films with different curing methods.

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Section: Resultsmentioning

confidence: 99%

Study of Inkjet-Printed Silver Films Based on Nanoparticles and Metal-Organic Decomposition Inks with Different Curing Methods

Xiao

Zhou

Gan³

et al. 2020

Micromachines

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“…Figure 3 shows the relationship between annealing temperature and the conductivity of silver electrodes. Thermal annealing is an effective post-treatment technology that can be used for curing and sintering as-printed Ag electrodes [23,24]. As can be seen in Figure 3, the conductivity initially increased and then sharply decreased with increasing annealing temperature.…”

Section: Thermal Annealingmentioning

confidence: 99%

A Strategy toward Realizing Narrow Line with High Electrical Conductivity by Electrohydrodynamic Printing

et al. 2022

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Over the past few decades, electrohydrodynamic (EHD) printing has proved to be an environmentally friendly, cost-effective and powerful tool in manufacturing electronic devices with a wire width of less than 50 μm. In particular, EHD printing is highly valued for the printing of ultrafine wire-width silver electrodes, which is important in manufacturing large-area, high-resolution micron-scale or even nanoscale structures. In this paper, we compare two methods of surface modification of glass substrate: UV treatment and oxygen plasma treatment. We found that oxygen plasma was better than UV treatment in terms of wettability and uniformity. Secondly, we optimized the annealing temperature parameter, and found that the conductivity of the electrode was the highest at 200 °C due to the smoothing silver electrode and the oxidation-free internal microstructure. Thirdly, we used EHD printing to fabricate silver electrodes on the glass substrate. Due to the decrease of conductivity as a result of the skin effect and the decrease of silver content, we found that driving voltage dropped, line width decreased, and the conductivity of silver line decreased. After the optimization of the EHD printing process, Ag electrode line width and conductivity reached 19.42 ± 0.24 μm and 6.01 × 106 S/m, demonstrating the potential of electro-hydraulic printing in the manufacturing of flexible, wearable, high-density, low-power-consumption electronics.

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“…As suggested by a previous report, to achieve low electrical resistivity of Ag ink [20], the printed samples were ultraviolet (UV) cured for 480 s. Figure 2 shows the printed circuit on the PET substrate; the design consists of one larger electrode for droplet introduction and five smaller electrodes, 1.5 mm × 1.5 mm, for droplet transport. The electrodes are separated by a 100-µm gap.…”

Section: Device Fabricationmentioning

confidence: 99%

Characterization of Inkjet-Printed Digital Microfluidics Devices

Chen

Choi

et al. 2021

Sensors

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Digital microfluidics (DMF) devices enable precise manipulation of small liquid volumes in point-of-care testing. A printed circuit board (PCB) substrate is commonly utilized to build DMF devices. However, inkjet printing can be used to fabricate DMF circuits, providing a less expensive alternative to PCB-based DMF designs while enabling more rapid design iteration cycles. We demonstrate the cleanroom-free fabrication process of a low-cost inkjet-printed DMF circuit. We compare Kapton and polymethyl methacrylate (PMMA) as dielectric coatings by measuring the minimal droplet actuation voltage for a range of actuation frequencies. A minimum actuation voltage of 5.6 V was required for droplet movement with the PMMA layer thickness of 0.2 μm and a hydrophobic layer of 0.17 μm. Significant issues with PMMA dielectric breakdown were observed at actuation voltages above 10 V. In comparison, devices that utilized Kapton were found to be more robust, even at an actuation voltage up to 100 V.

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UV-Cured Inkjet-Printed Silver Gate Electrode with Low Electrical Resistivity

Cited by 8 publications

References 21 publications

Study of Inkjet-Printed Silver Films Based on Nanoparticles and Metal-Organic Decomposition Inks with Different Curing Methods

Study of Inkjet-Printed Silver Films Based on Nanoparticles and Metal-Organic Decomposition Inks with Different Curing Methods

A Strategy toward Realizing Narrow Line with High Electrical Conductivity by Electrohydrodynamic Printing

Characterization of Inkjet-Printed Digital Microfluidics Devices

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