Research Article | Open Access

Soft Schottky diodes for skin-interfaced electronics enabled by entirely soft components

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Soft Sci 2024;4:[Accepted].
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Abstract

Soft electronics has achieved significant development, attracting substantial interest due to their promising potential as a dominant form of future electronics. In this rapidly evolving field, the fully soft Schottky diode plays a critical role as a fundamental building block for electronic circuitry systems. These systems, constructed entirely from soft materials, are capable of tolerating various mechanical deformations when interfaced with human skin, making them ideal for use in health monitoring systems and interactive human-machine interfaces. In this study, we introduce a Schottky diode fabricated entirely from soft materials using a facile solution process, which further enables all-printing fabrication systems. Utilizing the mechanical softness of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate based soft electrode, poly(3-hexylthiophene) nanofibril composite soft semiconductor, and liquid metal, we successfully fabricated a fully soft Schottky diode. This diode exhibits exceptional electrical characteristics even under various mechanical deformations, exhibiting the high durability of the device. We have further developed fully soft rectifiers and logic gates, highlighting the versatility of our study. By incorporating these devices with a piezoelectric nanogenerator in a skin-interfaced energy harvesting system, they exhibit sufficient capability for rectification, ensuring stable power supply as part of a power supply management system. This approach offers substantial potential for future skin-interfaced electronics, paving the way for an advanced wearable technology.

Keywords

Soft Schottky diode, skin-interfaced electronics, fully soft electronics, soft full-wave bridge rectifier

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Shin D, Kim S, Park H, Kim Y, Na M, Kim D, Sim K. Soft Schottky diodes for skin-interfaced electronics enabled by entirely soft components. Soft Sci 2024;4:[Accept]. http://dx.doi.org/10.20517/ss.2024.03

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© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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