Surface Passivation Engineering for Stable Optoelectronic Devices via Hydroxyl-Free ZnMgO Nanoparticles

Surface Passivation Engineering for Stable Optoelectronic Devices via Hydroxyl-Free ZnMgO Nanoparticles | 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 Research Article Surface Passivation Engineering for Stable Optoelectronic Devices via Hydroxyl-Free ZnMgO Nanoparticles Seongkeun Oh, Jaewhi Choi, Junhyeok Park, Young Kyun Choi, Taesung Park, and 4 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6259713/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 09 Jun, 2025 Read the published version in Nano Convergence → Version 1 posted 5 You are reading this latest preprint version Abstract ZnMgO nanoparticles (ZMO NPs) are widely used as electron transport layers in optoelectronic devices such as light-emitting diodes (LEDs) and photodiodes (PDs) owing to their facile synthesis and excellent electron transport properties. However, the surface hydroxyl groups (‒OH) on ZMO NPs introduce charge traps, inhibit electron transport, and reduce device stability, particularly under ambient humidity and oxygen. An alcohol treatment (AT) method was developed in this study to remove surface ‒OH via proton transfer, effectively reducing trap states and dipole moments and enhancing surface passivation. Quantum-dot-based LEDs and PDs fabricated using the AT-based ZMO NPs exhibited remarkably improved current density, luminance, and external quantum efficiency in relation to the untreated devices. Notably, methanol-treated devices achieved an operational lifetime of approximately 28 h under ambient conditions, representing a substantial advancement in device stability and performance. The AT approach offers a simple and effective strategy for optimizing ZMO NPs for next-generation optoelectronic applications. quantum dot surface engineering optoelectronic devices hydroxyl-free alcohol treatment Full Text Supplementary Files SIAlcoholTreatmentOptoelectronicdeviceNC.docx Cite Share Download PDF Status: Published Journal Publication published 09 Jun, 2025 Read the published version in Nano Convergence → Version 1 posted Editorial decision: Minor revision 17 Apr, 2025 Reviewers agreed at journal 31 Mar, 2025 Reviewers invited by journal 31 Mar, 2025 Editor assigned by journal 20 Mar, 2025 First submitted to journal 19 Mar, 2025 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-6259713","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":436145112,"identity":"b385ff12-d7af-4ab1-8725-2311b966b323","order_by":0,"name":"Seongkeun 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