Perovskite-perovskite-silicon triple junction solar cells with improved carrier and photon management

Perovskite-perovskite-silicon triple junction solar cells with improved carrier and photon management | 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 Perovskite-perovskite-silicon triple junction solar cells with improved carrier and photon management Kerem Artuk, Deniz Turkay, Austin G. Kuba, Stefan Riemelmoser, and 32 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7077073/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 17 Mar, 2026 Read the published version in Nature → Version 1 posted You are reading this latest preprint version Abstract Perovskite–silicon triple-junction photovoltaics offer efficiency gains beyond dual-junction devices, but at the expense of added complexity. Here, we address two main challenges in perovskite-silicon-based triple-junction solar cells: reduced open-circuit voltage in the wide-bandgap top-cell and limited current density in the middle-cell. Additive engineering with 4-hydroxybenzylamine modulates the crystallization dynamics of the top-cell absorber and suppresses bulk recombination, enabling open-circuit voltages up to 1.405 V. The three-step-manufactured lead-halide middle-cell absorbers result in an increasing thickness and a reduced bandgap, thereby boosting the current density. Low-refractive-index SiOx nanoparticles accumulated in the front valleys of the textured silicon bottom-cell act as a middle-reflector, enhancing light absorption in the middle-cell. These innovations are then combined in 1-cm2 perovskite-perovskite-silicon devices, reaching a steady-state efficiency of 30.5%. Physical sciences/Energy science and technology/Renewable energy/Solar energy/Photovoltaics/Solar cells Physical sciences/Materials science/Materials for energy and catalysis/Solar cells Physical sciences/Engineering/Electrical and electronic engineering Full Text Additional Declarations There is NO Competing Interest. Supplementary Files 3JArtukWolffSI.pdf Supplementary Information Cite Share Download PDF Status: Published Journal Publication published 17 Mar, 2026 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. 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-7077073","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Physical Sciences - Article","associatedPublications":[],"authors":[{"id":495971383,"identity":"6a5f0d91-ad4e-4636-98e2-e1e5bd04dffc","order_by":0,"name":"Kerem Artuk","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA30lEQVRIiWNgGAWjYBACCQSTjfEBA4OcDAMDD5FaeBjYmA0YGIx5SNLCJkGUFsn23oePbjDY5dtLpKVVfNxhwMPAfvYAXi3SPMeNjXMYki17JNKO3Zx5BqiFJy8BrxY5iTQ26RwGZgMeifS227xtf3gYJHgM8GuRf8b+O4ehHqyl+G+bAWEt0hJsbMw5DIeBWtKOMTMSo0WyJ41ZOsfguAHPmWfJkr1Av7Dx5ODXInH8GOPnnIpqA/b2NMMPP3cYyPGzn8GvBQJgahgbgImACPVIAKRlFIyCUTAKRgE6AAA4rzViTFM/9QAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0001-5925-0766","institution":"EPFL PV-Lab","correspondingAuthor":true,"prefix":"","firstName":"Kerem","middleName":"","lastName":"Artuk","suffix":""},{"id":495971384,"identity":"c64d88c4-536c-4d12-a095-5abf5477273f","order_by":1,"name":"Deniz Turkay","email":"","orcid":"","institution":"EPFL PV-Lab","correspondingAuthor":false,"prefix":"","firstName":"Deniz","middleName":"","lastName":"Turkay","suffix":""},{"id":495971385,"identity":"bfef34e9-d00d-45ad-becf-831a934fa7c1","order_by":2,"name":"Austin G. 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