Hot Carrier Localization Affected by A Cations in Hybrid Perovskite

Hot Carrier Localization Affected by A Cations in Hybrid Perovskite | 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 Hot Carrier Localization Affected by A Cations in Hybrid Perovskite Zeyu Zhang, Xingyu Yue, Yunfei Ouyang, Yujie Zheng, Kuan Sun, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4591709/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 Although FAPbI 3 -based optoelectronic devices have achieved excellent properties, the role of organic cations FA and MA in the performance of organic-inorganic perovskites remains contentious. These cations typically affect the phase stabilization, cubic crystallization, and surface functionalization process, while were traditionally believed to hardly directly affect the optoelectronic properties of organic-inorganic lead halide perovskites (OLHPs). In this study, transient photo-drag current, arising from momentum transfer during light-matter interaction, is employed to reveal the hot carrier transfer dynamics of the OLHPs. The photo-drag current could be reversed by the substitution of the MA cation, which indicates the hot carriers in OLHPs are strongly localized by the MA cation dipole. Additionally, the correlation between the hot carrier photoconductivity and the electronic structure in different A-cation samples revealed that the bulk photovoltaic current could also affected by the A-cation in HIOPs. Our work not only demonstrates the photon drag current in perovskite with an excess photon energy pump but also provides a method to study light-carrier-phonon interactions of the hot carriers in OLHPs. Physical sciences/Optics and photonics/Optical physics/Terahertz optics Physical sciences/Materials science/Condensed-matter physics/Electronic properties and materials Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SI20240617.docx Supplementary Materials for Hot Carrier Localization Affected by A Cations in Hybrid Perovskite 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-4591709","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":318920730,"identity":"ac676faf-8d84-4453-9cd5-05d2a575f8c3","order_by":0,"name":"Zeyu 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