Making color display cool: An electrochemical self-cooled dynamic structural color device

Making color display cool: An electrochemical self-cooled dynamic structural color device | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Making color display cool: An electrochemical self-cooled dynamic structural color device Boxiang Wang, Shenghao Jin, Fan Yi, Dong Yang, Yujie Peng, Mengqi Liu, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4426570/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Electrochromic (EC) materials can dynamically manipulate transport of light and thermal radiation under the electric field, which are promising for applications such as smart windows and energy-saving display devices. The color switching mechanism in EC materials is mainly based on optical absorption, resulting in excessive solar thermal load when used outdoors. Although daytime radiative cooling (DRC) provides a possible solution for energy-efficient heat dissipation for these outdoor devices, it often leads to a white appearance incompatible with EC color displays. To address this challenge, we develop novel display devices that can simultaneously realize color switching and DRC, enabled by reconfigurable, high-quality optical nanocavities based on reversible metal electrodeposition. These devices can not only achieve sub-ambient cooling of 2.6 ~ 5.3 ℃ under direct sunlight but also exhibit multiplexed adaptive displays with diverse colors, high stability, and long cycle life. Based on worldwide building-level energy simulations, we show this novel display can potentially save electrical energy consumption of 0.8–23.1 kWh/m 2 compared to conventional LED displays, providing a new paradigm of passively cooled dynamic color display. Physical sciences/Materials science/Materials for optics/Nanophotonics and plasmonics Physical sciences/Energy science and technology Physical sciences/Chemistry/Electrochemistry Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryInformation.docx SupplementaryMovie.zip Supplementary Movie Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4426570","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":308744698,"identity":"3f55b092-e367-498a-96a6-a2271f672605","order_by":0,"name":"Boxiang Wang","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABFUlEQVRIiWNgGAWjYJACZiDmAWLGBwwMEjJAuoFoLcwGQC08RGsBATYJqF78wOD42cOvCyoOy/DPbr9WdaPGgoeB/3DrBoYaOwb+2dhtMziTl2Y940waj8SdM2W3c44BHSaR2HaD4Vgyg8SdA1i1mB3IMTPmbbPhYbiRk3Y7hw2khRGohe0Ag4FEAnYt59+AtEjwyAO1FOf8A2rhPwjU8g+Plhs5xo9BthjcSD/GnNsGCjGgwxjbcGuxv/HGjBnkF8MbOczSuX0SPGwgvyT2JfNI3MCuRbI/x/gzMMTs5W6kP/yc861Ojp//+LMbH77ZyfHPwK6FARodQMBjAOGCiAT8EcT8AUKzP8CjaBSMglEwCkYyAADBolikpmrehQAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-8034-1504","institution":"Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences","correspondingAuthor":true,"prefix":"","firstName":"Boxiang","middleName":"","lastName":"Wang","suffix":""},{"id":308744699,"identity":"f6790472-48ad-4f9b-a4a7-d918fd823343","order_by":1,"name":"Shenghao Jin","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Shenghao","middleName":"","lastName":"Jin","suffix":""},{"id":308744700,"identity":"778b6357-7422-40f2-9198-ec79299b038b","order_by":2,"name":"Fan Yi","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Fan","middleName":"","lastName":"Yi","suffix":""},{"id":308744701,"identity":"8412ebe5-916b-46d4-b488-7af6ad02c42d","order_by":3,"name":"Dong Yang","email":"","orcid":"","institution":"Sichuan University","correspondingAuthor":false,"prefix":"","firstName":"Dong","middleName":"","lastName":"Yang","suffix":""},{"id":308744702,"identity":"bc1e5067-ee71-4b2a-acad-e4967e936a6e","order_by":4,"name":"Yujie Peng","email":"","orcid":"","institution":"Sichuan University","correspondingAuthor":false,"prefix":"","firstName":"Yujie","middleName":"","lastName":"Peng","suffix":""},{"id":308744703,"identity":"6b3b9f45-8e21-4838-976c-fbcc68e216b1","order_by":5,"name":"Mengqi Liu","email":"","orcid":"https://orcid.org/0000-0001-5958-6702","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"prefix":"","firstName":"Mengqi","middleName":"","lastName":"Liu","suffix":""},{"id":308744704,"identity":"1ab5ec1f-2639-4d53-8000-6d91562fc18c","order_by":6,"name":"C. 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