Fully biodegradable electrochromic display for disposable patch  

作　　者：Se-Hun Kang Ju-Yong Lee Joo-Hyeon Park Sung-Geun Choi Sang-Ho Oh Young-Chang Joo Seung-Kyun Kang 

机构地区：[1]Department of Materials Science and Engineering,Seoul National University,Seoul,08826,Republic of Korea [2]Biomaterials Research Center,Biomedical Research Institute,Korea Institute of Science and Technology(KIST),Seoul,02792,Republic of Korea [3]Research Institute of Advanced Materials(RIAM),Seoul National University,Seoul,08826,Republic of Korea [4]Nano Systems Institute SOFT Foundry,Seoul National University,Seoul,08826,Republic of Korea

出　　处：《npj Flexible Electronics》2024年第1期157-167,共11页npj-柔性电子(英文)

基　　金：supported by National R&D Program through the National Research Foundation of Korea(NRF)funded by Ministry of Science andICT(2022M3H4A1A04096393);with the majority of the funding provided by this source;support is provided by NRF funded by Ministry of Science and ICT(RS-2023-00302145).

摘　　要：Flexible and biodegradable electronics have emerged as a promising solution for escalating electronic waste issue caused by the rapid development of skin patch electronics.Fully biodegradable displays are essential for visualizing biological/physical/chemical/electrochemical signals measured by a wide range of skin patch electronics.Here we propose fully biodegradable electrochromic display providing low operating voltage and low power consumption.The biodegradable transparent conductive electrode was fabricated by transferring free-standing tungsten nanomesh onto poly lactic-coglycolic acid substrate using electrospinning templating,minimizing damage to the substrate.Electrochromic layer was tungsten oxide which is biodegradable,and a ferrocyanide/ferricyanide redox agent was utilized as a counter electrode reaction to enhance operational stability in an aqueous electrolyte by reducing operating voltage and side reactions.This display successfully visualized diverse signals from various biodegradable electronics such as UV sensors and electrochemical transistors,and finally underwent eco-friendly degradation in phosphate-buffered saline or soil under mild conditions.

关 键 词：PATCH ELECTRODE finally 

分 类 号：O64[理学—物理化学]