Vertically stacked monolithic multiband perovskite photodetectors for color-filter-free imaging

Vertically stacked monolithic multiband perovskite photodetectors for color-filter-free imaging | 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 Physical Sciences - Article Vertically stacked monolithic multiband perovskite photodetectors for color-filter-free imaging Maksym Kovalenko, Sergey Tsarev, Daria Proniakova, Erfu Wu, Gebhard Matt, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4927222/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 18 Jun, 2025 Read the published version in Nature → Version 1 posted You are reading this latest preprint version Abstract Modern color image sensors face challenges in further improving sensitivity and image quality because of inherent limitations in light utilization efficiency1. A significant factor contributing to these limitations is the use of passive optical filters, which absorb and dissipate a substantial amount of light, thereby reducing the efficiency of light capture2. On the contrary, active optical filtering in Foveon-type vertically stacked architectures still struggles to deliver optimal performance due to their lack of color selectivity, making them inefficient for precise color imaging3. Here, we introduce an innovative architecture for color sensor arrays that employ multilayer monolithically stacked lead halide perovskite thin-film photodetectors. Perovskite bandgap tunability4 is utilized to selectively absorb the visible light spectrum's red, green, and blue regions, eliminating the need for color filters. External quantum efficiencies of 50%, 47%, and 53% are demonstrated for the red, green, and blue channels, as well as color accuracy of 4.5 in ΔELab, outperforming state-of-the-art color-filter array and Foveon-type photosensors. The novel image sensor design improves light utilization in color sensors and paves the way for a new generation of highly sensitive, artifact-free images with enhanced color fidelity. Physical sciences/Optics and photonics/Optical materials and structures Physical sciences/Energy science and technology/Energy harvesting Full Text Additional Declarations There is NO Competing Interest. Supplementary Files VerticallystackedmonolithicmultilayerperovskitephotodetectorsforcolorfilterfreeimagingSUPPORTINGINFO.pdf Vertically-stacked monolithic multilayer perovskite photodetectors for color-filter-free imagingSUPPORTINGINFO Cite Share Download PDF Status: Published Journal Publication published 18 Jun, 2025 Read the published version in Nature → 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. 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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-4927222","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Physical Sciences - Article","associatedPublications":[],"authors":[{"id":347490771,"identity":"c36341f4-277f-445f-8db5-2bdbfb775bd1","order_by":0,"name":"Maksym 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