The effect of silver particle size and organic stabilizers on the conductivity of silver particulate films in thermal sintering processes

Seo, Mihwa; Kim, Jung Soo; Lee, Jung‐Kyu; Kim, Shin Beom; Koo, Sang Man

doi:10.1016/j.tsf.2016.08.060

Cited by 8 publications

(7 citation statements)

References 24 publications

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“…The small dimensions of the nanoparticles ( d ≈50 nm) allow them to penetrate deep into the network up to distances of ≈1.5 µm. This is problematic as low temperature processing is usually achieved using nanoparticles with diameters less than 50 nm [ 54 ] or dissolved silver complexes. [ 24 ] In contrast, when the AgNS are deposited on a nanosheet network (Figure 5A, lower), their 2D‐like geometry prevents them entering the voids which creates a distinct interface with the graphene network and precludes shorting (see also Supporting Information S19).…”

Section: Resultsmentioning

confidence: 99%

Highly Conductive Networks of Silver Nanosheets

Kelly

O'reilly

Gabbett

et al. 2022

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Although printed networks of semiconducting nanosheets have found success in a range of applications, conductive nanosheet networks are limited by low conductivities (<106 S m−1). Here, dispersions of silver nanosheets (AgNS) that can be printed into highly conductive networks are described. Using a commercial thermal inkjet printer, AgNS patterns with unannealed conductivities of up to (6.0 ± 1.1) × 106 S m−1 are printed. These networks can form electromagnetic interference shields with record shielding effectiveness of >60 dB in the microwave region at thicknesses <200 nm. High resolution patterns with line widths down to 10 µm are also printed using an aerosol‐jet printer which, when annealed at 200 °C, display conductivity >107 S m−1. Unlike conventional Ag‐nanoparticle inks, the 2D geometry of AgNS yields smooth, short‐free interfaces between electrode and active layer when used as the top electrode in vertical nanosheet heterostructures. This shows that all‐printed vertical heterostructures of AgNS/WS2/AgNS, where the top electrode is a mesh grid, function as photodetectors demonstrating that such structures can be used in optoelectronic applications that usually require transparent conductors.

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Section: Resultsmentioning

confidence: 99%

Highly Conductive Networks of Silver Nanosheets

Kelly

O'reilly

Gabbett

et al. 2022

Small

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“…The optimal electrical resistivity values of ~6.7 μΩ·cm and ~3.83 μΩ·cm were achieved by Balantrapu et al and Ding et al at 200 °C and 160 °C, respectively. Seo et al [66] focused their research on the effects of both the Ag NPs size and the type of protective agents on the conductivity and morphology of the Ag NPs based film during the sintering process. It was found that the size of the Ag NPs was the main factor influencing the initial decrease in the resistivity because of the neck formation between Ag NPs and the type of protective agents was the most important factor for determining the final resistivity of the conductive films due to interconnections of the Ag NPs via extended neck formation.…”

Section: Strategies Of Achieving Highly Conductive Ag Nps Based Inmentioning

confidence: 99%

Silver Nanoparticles Based Ink with Moderate Sintering in Flexible and Printed Electronics

Guo

et al. 2019

IJMS

100

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Printed electronics on flexible substrates has attracted tremendous research interest research thanks its low cost, large area production capability and environmentally friendly advantages. Optimal characteristics of silver nanoparticles (Ag NPs) based inks are crucial for ink rheology, printing, post-print treatment, and performance of the printed electronics devices. In this review, the methods and mechanisms for obtaining Ag NPs based inks that are highly conductive under moderate sintering conditions are summarized. These characteristics are particularly important when printed on temperature sensitive substrates that cannot withstand sintering of high temperature. Strategies to tailor the protective agents capping on the surface of Ag NPs, in order to optimize the sizes and shapes of Ag NPs as well as to modify the substrate surface, are presented. Different (emerging) sintering technologies are also discussed, including photonic sintering, electrical sintering, plasma sintering, microwave sintering, etc. Finally, applications of the Ag NPs based ink in transparent conductive film (TCF), thin film transistor (TFT), biosensor, radio frequency identification (RFID) antenna, stretchable electronics and their perspectives on flexible and printed electronics are presented.

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“…The electrical and optical characteristics of transparent electrodes are influenced by the dimensional configuration of the synthesized nanomaterials, particularly the diameter, shape, and density of the constituent elements. Seo et al conducted an extensive investigation into the impact of AgNP size and protective agents on the conductivity and morphology of AgNP-based films during the sintering process . Their study revealed that the size of AgNPs and the choice of protective agents played a critical role in the formation of necks during sintering.…”

Section: Methodsmentioning

confidence: 99%

Transparent Electronics for Wearable Electronics Application

Won,

Bang,

Choi

et al. 2023

Chem. Rev.

108

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Recent advancements in wearable electronics offer seamless integration with the human body for extracting various biophysical and biochemical information for real-time health monitoring, clinical diagnostics, and augmented reality. Enormous efforts have been dedicated to imparting stretchability/flexibility and softness to electronic devices through materials science and structural modifications that enable stable and comfortable integration of these devices with the curvilinear and soft human body. However, the optical properties of these devices are still in the early stages of consideration. By incorporating transparency, visual information from interfacing biological systems can be preserved and utilized for comprehensive clinical diagnosis with image analysis techniques. Additionally, transparency provides optical imperceptibility, alleviating reluctance to wear the device on exposed skin. This review discusses the recent advancement of transparent wearable electronics in a comprehensive way that includes materials, processing, devices, and applications. Materials for transparent wearable electronics are discussed regarding their characteristics, synthesis, and engineering strategies for property enhancements. We also examine bridging techniques for stable integration with the soft human body. Building blocks for wearable electronic systems, including sensors, energy devices, actuators, and displays, are discussed with their mechanisms and performances. Lastly, we summarize the potential applications and conclude with the remaining challenges and prospects.

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The effect of silver particle size and organic stabilizers on the conductivity of silver particulate films in thermal sintering processes

Cited by 8 publications

References 24 publications

Highly Conductive Networks of Silver Nanosheets

Highly Conductive Networks of Silver Nanosheets

Silver Nanoparticles Based Ink with Moderate Sintering in Flexible and Printed Electronics

Transparent Electronics for Wearable Electronics Application

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