Towards complete linearly-polarized electroluminescence using isotropic emitters

Towards complete linearly-polarized electroluminescence using isotropic emitters | 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 Towards complete linearly-polarized electroluminescence using isotropic emitters Kai Wang, Yangzhi Tan, Yitong Huang, Yunke Zhu, Fumin Lu, Dadi Tian, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9011750/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 Linearly polarized (LP) light sources are essential components in numerous applications. Solution-processed LP light-emitting diodes (LP-LEDs) based on perovskite and colloidal nanocrystals offer a promising route for low-cost and direct LP light generation. However, the performance of these devices is limited by the conventional method of aligning anisotropic emitters, such as nanorods and nanoplatelets, which faces inherent challenges in achieving high anisotropy and precise alignment necessary for high polarization ratio (PR) emission. Here, we introduce a paradigm shift by decoupling polarization control from the emitter’s intrinsic anisotropy. We demonstrate near-complete LP electroluminescence through the integration of isotropic colloidal quantum dot (QD) emitters into an anisotropic vertical microcavity. This architecture leverages the cavity-induced polarization-splitting effect to create a narrow window for extracting a single polarization mode. The resulting QD-based LP-LEDs achieve a record experimental PR of 351, a fifty-fold improvement over the previous benchmark for solution-processed counterparts (6.8), rivaling the performance of any existing LP-LED system. This work provides a robust and universally applicable platform that circumvents the long-standing limitations associated with aligning anisotropic emitters, enabling the use of arbitrary emitters to achieve advanced LP-LEDs with superior performance. Physical sciences/Optics and photonics/Lasers, LEDs and light sources Physical sciences/Optics and photonics/Applied optics/Optoelectronic devices and components Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryInformation.pdf Supplementary Information 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-9011750","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":599423442,"identity":"9dc8e271-087a-4352-9495-0616ff389972","order_by":0,"name":"Kai 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