Inkjet printing wearable electronic devices

Gao, Meng; Li, Lihong; Song, Yanlin

doi:10.1039/c7tc00038c

Cited by 475 publications

(373 citation statements)

References 258 publications

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“…In addition, more and more of the electronics of the future must be free of rigid substrates as well as subtractive processes (traditional physical/chemical vapor depositions [PVD/CVD] and photolithography) which are expensive, cannot be freely scaled to large area and are not sustainable 5,6. Printing technologies are a promising alternative for the manufacturing of novel flexible and large area electronics 7,8. However, breakthroughs in printing technologies are crucially needed to reach scalable manufacturing of electronic devices, such as resistors, antennas, capacitors, diodes, batteries, and thin film transistors (TFTs) 9–14…”

Section: Introductionmentioning

confidence: 99%

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Carlos

Leppäniemi

Sneck

et al. 2020

Adv Elect Materials

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Lately, printed oxide electronics have advanced in the performance and low‐temperature solution processability that are required for the dawn of low‐cost flexible applications. However, some of the remaining limitations need to be surpassed without compromising the device electronic performance and operational stability. The printing of a highly stable ultra‐thin high‐κ aluminum‐oxide dielectric with a high‐throughput (50 m min−1) flexographic printing is accomplished while simultaneously demonstrating low‐temperature processing (≤200 °C). Thermal annealing is combined with low‐wavelength far‐ultraviolet exposure and the electrical, chemical, and morphological properties of the printed dielectric films are studied. The high‐κ dielectric exhibits a very low leakage‐current density (10−10 A cm−2) at 1 MV cm−1, a breakdown field higher than 1.75 MV cm−1, and a dielectric constant of 8.2 (at 1 Hz frequency). Printed indium oxide transistors are fabricated using the optimized dielectric and they achieve a mobility up to 2.83 ± 0.59 cm2 V−1 s−1, a subthreshold slope <80 mV dec−1, and a current ON/OFF ratio >106. The flexible devices reveal enhanced operational stability with a negligible shift in the electrical parameters after ageing, bias, and bending stresses. The present work lifts printed oxide thin film transistors a step closer to the flexible applications of future electronics.

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Section: Introductionmentioning

confidence: 99%

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Carlos

Leppäniemi

Sneck

et al. 2020

Adv Elect Materials

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“…It is evident that conventional electronics are rigid, bulky, and not directly suitable for wearing. Hence, to enhance their wearability, rigid electronic circuits are either transformed into flexible and stretchable circuits or are embedded in a stretchable platform [22,31]. We have identified this as our primary objective as it can potentially create the first fully functional inkjet-printed stretchable circuit containing embedded optoelectronic components.…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization of Inkjet-Printed Stretchable Circuits for Wearable Sensor Applications

Abu-Khalaf

Saraireh

Eisa

et al. 2018

Sensors

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This paper introduces a cost-effective method for the fabrication of stretchable circuits on polydimethylsiloxane (PDMS) using inkjet printing of silver nanoparticle ink. The fabrication method, presented here, allows for the development of fully stretchable and wearable sensors. Inkjet-printed sinusoidal and horseshoe patterns are experimentally characterized in terms of the effect of their geometry on stretchability, while maintaining adequate electrical conductivity. The optimal fabricated circuit, with a horseshoe pattern at an angle of 45°, is capable of undergoing an axial stretch up to a strain of 25% with a resistance under 800 Ω. The conductivity of the circuit is fully reversible once it is returned to its pre-stretching state. The circuit could also undergo up to 3000 stretching cycles without exhibiting a significant change in its conductivity. In addition, the successful development of a novel inkjet-printed fully stretchable and wearable version of the conventional pulse oximeter is demonstrated. Finally, the resulting sensor is evaluated in comparison to its commercially available counterpart.

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“…As a technique, IJP has been under constant development for decades, with the printing of CPs having been first reported in the late 1990s . Since the initial reports, IJP of conjugated materials has seen a wealth of publications and been the subjects of recent reviews . In general, IJP has proven to be a reliable and robust technique for the formation of complex 2D patterns with low‐viscosity inks (typically <100 cP).…”

Section: Additive Manufacturing Of Conjugated Polymersmentioning

confidence: 99%

“…27 Since the initial reports, IJP of conjugated materials has seen a wealth of publications and been the subjects of recent reviews. 28,29 In general, IJP has proven to be a reliable and robust technique for the formation of complex 2D patterns with low-viscosity inks (typically <100 cP). Its additive nature, where patterning is completed during the processing step, renders this method more environmentally friendly and cost-effective than the other commonly used methods, such as spin coating or drop casting.…”

Section: D Additive Manufacturing Of Cpsmentioning

confidence: 99%

3D printing of conjugated polymers

Jordan

Wang

2019

J Polym Sci B Polym Phys

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Three‐dimensional (3D) printing brings exciting prospects to the realm of conjugated polymers (CPs) and organic electronics through vastly enhanced design flexibility, structural complexity, and environmental sustainability. However, the use of 3D printing for CPs is still in its infancy and remains full of challenges. In this review, we highlight recent studies that demonstrate proof‐of‐concept strategies to mitigate some of these problems. Two general additive manufacturing approaches are featured: direct ink writing and vat photopolymerization. We conclude with an outlook for this thriving field of research and draw attention to the new possibilities that 3D printing can bring to CPs. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 1592–1605

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Inkjet printing wearable electronic devices

Abstract: In this review, the recent advances in inks, strategies, and the applications of inkjet-printed wearable electronics have been summarized.

Cited by 475 publications

References 258 publications

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Printed, Highly Stable Metal Oxide Thin‐Film Transistors with Ultra‐Thin High‐κ Oxide Dielectric

Experimental Characterization of Inkjet-Printed Stretchable Circuits for Wearable Sensor Applications

3D printing of conjugated polymers

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