Effects of Silver Oxide Addition on the Electrical Resistivity and Microstructure of Low-Temperature-Curing Metallo-Organic Decomposition Silver Pastes

Lu, Chun-An; Lin, Pang; Lin, Hong-Ching; Wang, Sea-Fue

doi:10.1143/jjap.46.4179

Cited by 30 publications

(19 citation statements)

References 10 publications

(10 reference statements)

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“…However, flexible substrates with low thermal conductivity can be subject to rupture or delamination of the formed structures. For silver sintering, due to the metal's high oxidation resistance and good electrical conduction even in oxidized states, simple thermal processes can be applied making the required sintering step to form uniform films of merged nanoparticles less demanding.…”

Section: The Printed Transparent Conductive Electrode In Organic Elecsupporting

confidence: 93%

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Hermerschmidt

Choulis

List‐Kratochvil

2019

Adv Materials Technologies

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Through the use of solution‐based materials, the field of printed organic electronics has not only made new devices accessible, but also allows the process of manufacture to move toward a high throughput industrial scale. However, while solution‐based active layer materials in these systems have been studied quite intensely, the printed electrodes and specifically the transparent conductive anode have only relatively recently been investigated. In this progress report, the use of metal nanoparticles within printed organic electronic devices is highlighted, specifically their use as replacement of the commonly used indium tin oxide transparent conductive electrode within organic photovoltaics (OPVs) and organic light emitting diodes (OLEDs). A cross fertilization between the applications is expected since an OPV device is essentially an inversely operated OLED. This report aims to highlight the use of inkjet‐printed nanoparticles as cost‐effective electrodes for printed optoelectronic applications and discusses methods to improve the conductive and interfacial properties. Finally, in an outlook, the use of these types of metal nanoparticle inks to manipulate light management properties, such as outcoupling, in the device is investigated.

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Section: The Printed Transparent Conductive Electrode In Organic Elecsupporting

confidence: 93%

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Hermerschmidt

Choulis

List‐Kratochvil

2019

Adv Materials Technologies

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“…6,7 One technical challenge is that these polymer substrates cannot maintain their function and stabilities above 200℃; 8 however, such high temperatures are required for melting conventional lead-free solders. 9,10 Consequently, new solder materials and packaging protocols enabling low temperature bonding would be advantageous.…”

Section: Introductionmentioning

confidence: 99%

Robust Ag nanoplate ink for flexible electronics packaging

Bridges

et al. 2015

Nanoscale

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Nanoinks are currently a topic of heightened interest with respect to low temperature bonding processes and printable electronics. We have developed an innovative polyvinylpyrrolidone (PVP)-stabilized Ag nanoplate ink amenable to very strong low temperature packaging, and investigated the relationship between bonding strength and electrical conductivity post-bonding. PVP shell plastic deformations observed in failure microcracks with the formation of PVP nanofibers, revealed bonding strength at low temperatures (<250 °C) was primarily due to adhesive bonding. It is found that, utilizing photonic sintering, ∼ 70 °C reduction of transformation temperature from adhesive to metallic bonding was achieved compared to that of thermal sintering. A numerical simulation was developed to better understand the influences of the light-induced heat generation, which demonstrated near-infrared light can facilitate sintering. Bonding strengths of 27 MPa were achieved at room temperatures, and 29.4 MPa at 210 °C with photonic sintering. Moreover, the anisotropic resistivity was observed with different thermal dependences. These results demonstrate Ag nanoplate inks have potential for low temperature 3D interconnections in lead-free microcircuits, flexible electronic packaging, and diverse sensing applications.

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“…This reduction is possibly caused by the reduction of the Q-factor of the LC tank, due to the deterioration of the chip's interconnection (higher contact resistance between the NFC-chip and RF antenna through the silver-based isotropic conductive adhesive -ICA). Saline solution can interact with the ICA creating silver oxide which has a higher resistivity (in the order of 10 −3 Ω cm, compared to 10 −8 Ω cm for pure silver) [68,69] thus preventing a good contact to the chip. This impact can be alleviated and perhaps completely avoided by designing packaging configurations based on organic/in-organic layers (i.e., atomic layer deposited layers), as shown elsewhere in literature.…”

Section: Wwwadvmattechnoldementioning

confidence: 99%

Near‐Field Communication Powered Hydrogel‐Based Smart Contact Lens

Quintero

Arai²,

Yamazaki³

et al. 2020

Adv Materials Technologies

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handling into the eye. The cornea, which is the environment where the CL is worn, is the first layer of the eye to which we have direct access and plays an important role in monitoring the health of the ocular surface. A soft contact lens with graphenebased electrodes has been demonstrated to perform local electroretinogram which can monitor in real time the electrophysiology of the corneal surface. [8] Although, this device was tested in animal models, optical power correction (found in conventional contact lenses) was not included. Additionally, the parylene support layer in direct contact with the eye lid could introduce discomfort while blinking (since parylene is commonly known as hydrophobic). [9,10] Tear fluid, originated at the lacrimal gland and drained by the lacrimal ducts, [11] covers the corneal surface (for protection and moist) allowing the CL to float and at the same time to have a direct interaction with its physiology. [12] This thin fluid layer, divided in lipid (outer), aqueous (middle) and mucin (inner) containing all the physiologically active substances present in blood, [13] is commonly known as colorless and transparent blood. Different studies have been reported on the elucidation of the causal relationship between the presence (quantity/ frequency) of certain biomarkers (e.g., cancer biomarkers) and systemic diseases. [14,15] With this in mind, attempts to monitor the differentiation and abnormalities of systemic diseases have been actively researched in recent years by introducing a system capable of measuring a specific substance from within a contact lens, [16-20] or measuring a physical quantity (i.e., temperature, pressure, etc.). [21,22] Regarding biosensors focused on the tear fluid, different approaches have been demonstrated either embedded inside of a contact lens [4,23] or by means of an external device temporarily in contact with the tears. These techniques aim to develop noninvasive and continuous monitoring solutions. Although not inside a contact lens, a flexible and biocompatible amperometric glucose sensor in contact with the eye and with an external readout system was tested in animal models and compared with glucose levels measured in blood. [24] The results show a delay between 40 to 60 min after the oral administration of glucose, which could present a risk factor for patients in need of reliable and fast glucose measurements. In parallel, a glucose sensor Nowadays, smart contact lenses (SCLs) display interesting features for healthcare monitoring; however, their comfort and practical usability strongly depend on the outermost material in contact with the eye. In this publication, the embedding of a custom-made and thermoformed Near-Field Communication based circuit in a conventional soft CL is presented. The circuit is composed of gold tracks on polyimide between thermoplastic polyurethane layers (insert), while the lens is based on industry standard double-molding process of poly(2-hydroxyethyl methacrylate) with proven compatibility with corneal tissue. The lens ...

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Effects of Silver Oxide Addition on the Electrical Resistivity and Microstructure of Low-Temperature-Curing Metallo-Organic Decomposition Silver Pastes

Cited by 30 publications

References 10 publications

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Implementing Inkjet‐Printed Transparent Conductive Electrodes in Solution‐Processed Organic Electronics

Robust Ag nanoplate ink for flexible electronics packaging

Near‐Field Communication Powered Hydrogel‐Based Smart Contact Lens

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