Bending reliability of transparent electrode of printed invisible silver-grid/PEDOT:PSS on flexible epoxy film substrate for powder electroluminescent device

Ohsawa, Masato; Hashimoto, Natsuki; Takeda, Naokazu; Tsuneyasu, Shota; Satoh, Toshifumi

doi:10.1016/j.microrel.2020.113673

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…Compared with the conventional organic flat light-emitting devices with a current-type excitation (which are very sensitive to the surrounding environment (i.e., water and oxygen)), the powder EL device has a high environmental resistance, owing to its characteristic electric field type excitation. Because of this advantage, the powder EL devices, which can be fabricated by 3D printing [ 1 , 2 ], exhibit good mechanical durability, such as bending durability [ 3 ], flexibility [ 4 ], and stretchability [ 5 , 6 ]. They can also be used as sensors for ammonia [ 7 ], carbon dioxide [ 8 ], humidity [ 9 ], and temperature [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Luminance in Powder Electroluminescent Devices by Substrates of Smooth and Transparent Cellulose Nanofiber Films

et al. 2021

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Powder electroluminescent (EL) devices with an electric field type excitation are surface light sources that are expected to have a wide range of practical applications, owing to their high environmental resistance; however, their low luminance has hindered their use. A clarification of the relationship between the properties of the film substrates and the electroluminescence is important to drastically improve light extraction efficiency. In this study, powder EL devices with different substrates of various levels of surface roughness and different optical transmittances were fabricated to quantitatively evaluate the relationships between the substrate properties and the device characteristics. A decrease in the surface roughness of the substrate caused a clear increase in both the current density and the luminance. The luminance was found to have a direct relationship with the optical transmittance of the substrates. The powder EL device, which was based on a cellulose nanofiber film and was the smoothest and most transparent substrate investigated, showed the highest luminance (641 cd/cm2) when 300 V was applied at 1 kHz.

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Section: Introductionmentioning

confidence: 99%

Enhancement of Luminance in Powder Electroluminescent Devices by Substrates of Smooth and Transparent Cellulose Nanofiber Films

et al. 2021

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“…In a recent study, Ohsawa and coworkers studied the bending reliability of transparent electrodes (made from Ag-grid/PEDOT:PSS) that were gravure printed over 50 µm thick epoxy film substrates and PEN film substrates, for performance comparison. [258] The flexible printed electrodes were then subjected to 20 000 outer bending cycles and their performance evaluated. It was observed that while the Ag-grid layer deposited over the PEN substrate suffered evident cracking, the grid deposited on top of the epoxy layer was able to endure the deformation tests without any damage.…”

Section: Polymeric Substratesmentioning

confidence: 99%

A Review on Materials and Technologies for Organic Large‐Area Electronics

Buga

Viana

2021

Adv Materials Technologies

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New and innovative applications in the field of electronics are rapidly emerging. Such applications often require flexible or stretchable substrates, lightweight and transparent materials, and design freedom. This paper offers a complete overview concerning flexible electronics manufacturing, focusing on the materials and technologies that have been recently developed. This combination of materials and technologies aims to fuel a fast, economical, and environmentally sustainable transition from the conventional to the novel and highly customizable electronics. Organic conductors, semiconductors, and dielectrics have recently gathered lots of attention since they are compatible with printing technologies, and can be easily spread over large and flexible substrates. These printing technologies are usually simple and fast procedures, which rely on low‐cost and recycle‐friendly materials, intended for large‐scale fabrication. Overall, even though organic large‐area electronics manufacturing is still in its early stages of development, it is a field with tremendous potential that holds promise to revolutionize the way products are designed, developed, and processed from the factory premises to the consumers’ hands. Besides, this technology is highly versatile and can be applied to a large array of sectors such as automotive, medical, home design, industrial, agricultural, among others.

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“…Recently, gravure offset printing has been introduced to avoid damage to the substrate due to high shear pressure. This technique utilizes an intermediate roller with an elastic blanket to finally print the pattern on the substrate [ 179 ]. Nomura et al (2018) used screen offset printing, which closely resembles gravure offset printing, to fabricate a silver ink-based blood leakage sensor [ 143 ].…”

Section: Flexible Electrode Fabrication By Various Printing Processesmentioning

confidence: 99%

Nanomaterials-patterned flexible electrodes for wearable health monitoring: a review

Hasan

Hossain

2021

J Mater Sci

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Electrodes fabricated on a flexible substrate are a revolutionary development in wearable health monitoring due to their lightweight, breathability, comfort, and flexibility to conform to the curvilinear body shape. Different metallic thin-film and plastic-based substrates lack comfort for long-term monitoring applications. However, the insulating nature of different polymer, fiber, and textile substrates requires the deposition of conductive materials to render interactive functionality to substrates. Besides, the high porosity and flexibility of fiber and textile substrates pose a great challenge for the homogenous deposition of active materials. Printing is an excellent process to produce a flexible conductive textile electrode for wearable health monitoring applications due to its low cost and scalability. This article critically reviews the current state of the art of different textile architectures as a substrate for the deposition of conductive nanomaterials. Furthermore, recent progress in various printing processes of nanomaterials, challenges of printing nanomaterials on textiles, and their health monitoring applications are described systematically. Graphical Abstract

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Bending reliability of transparent electrode of printed invisible silver-grid/PEDOT:PSS on flexible epoxy film substrate for powder electroluminescent device

Cited by 8 publications

References 21 publications

Enhancement of Luminance in Powder Electroluminescent Devices by Substrates of Smooth and Transparent Cellulose Nanofiber Films

Enhancement of Luminance in Powder Electroluminescent Devices by Substrates of Smooth and Transparent Cellulose Nanofiber Films

A Review on Materials and Technologies for Organic Large‐Area Electronics

Nanomaterials-patterned flexible electrodes for wearable health monitoring: a review

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