Carbon Quantum Dot Sensitized Nanocrystalline ZnO Thin Film for Efficient Photoelectrochemical Water Splitting

Carbon Quantum Dot Sensitized Nanocrystalline ZnO Thin Film for Efficient Photoelectrochemical Water Splitting | 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 Carbon Quantum Dot Sensitized Nanocrystalline ZnO Thin Film for Efficient Photoelectrochemical Water Splitting Ashu Jangra, Sonal Sahai This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4779644/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 Carbon quantum dots (QDs) sensitized ZnO thin films, prepared by a simple route utilizing sol gel spin coating and hydrothermal method have been investigated for photoelectrochemical (PEC) splitting of water. Time of sensitization has been optimized with respect to PEC response. A significant enhancement in photocurrent density and photon to hydrogen conversion efficiency has been witnessed for CQDs sensitized ZnO thin films. PEC results have been analysed with the help of various structural, optical and electrical characterizations, like XRD, TEM, absorption spectra, Photo current density and Mott schottky plot etc. Based on the data a diagram has been proposed for band edge alignment of Carbon QDs with ZnO, which also supports the enhancement in the PEC response. Photoelectrochemical Quantum Dots Carbon Hydrogen generation Full Text Additional Declarations No competing interests reported. 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. 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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-4779644","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":336051105,"identity":"86267e32-e8fd-41e9-a4f7-9dbb029734d4","order_by":0,"name":"Ashu Jangra","email":"","orcid":"","institution":"St. John’s College","correspondingAuthor":false,"prefix":"","firstName":"Ashu","middleName":"","lastName":"Jangra","suffix":""},{"id":336051106,"identity":"3da94ebd-0722-49e6-9b09-2a0ff3459efb","order_by":1,"name":"Sonal Sahai","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/klEQVRIiWNgGAWjYLCCBzBGQgWQYGZuIKwlgYFBAsI4A9LCSIoWxjYwiV+LfHvvwQ8Jf+zq5NvPHn7xcF5tNH87UMuPim04tRicOZcskdiWLGFwJi/NInHb8dwZhxkbGHvO3MatRSLHQCKxgVnCgCHHzCBx27HcBqAWZsY23FrkZ+QY/0j4Uy8h3/8GqGXOsdz5hLQw3Mgxk0hgOywBZBg/SGyoyd1ASIvBmTNmFoltxyU33HhjxpBw7EDuRqCWg/j8It/eY3zjw59qfvn+HOOPP2rqcuedP3zwwY8KPA5DAmzAyDkMZh0gSj0QMH9gYKgjVvEoGAWjYBSMIAAA7pNec73ZtBMAAAAASUVORK5CYII=","orcid":"","institution":"St. John’s College","correspondingAuthor":true,"prefix":"","firstName":"Sonal","middleName":"","lastName":"Sahai","suffix":""}],"badges":[],"createdAt":"2024-07-22 06:38:54","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4779644/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4779644/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":67463006,"identity":"d2bb4dd9-a97a-4064-ad1c-619581787199","added_by":"auto","created_at":"2024-10-25 10:02:50","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":787566,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptSNRevised.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4779644/v1_covered_44e15ad3-d52e-4260-ab10-b28d94f1f8b7.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Carbon Quantum Dot Sensitized Nanocrystalline ZnO Thin Film for Efficient Photoelectrochemical Water Splitting","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Photoelectrochemical, Quantum Dots, Carbon, Hydrogen generation","lastPublishedDoi":"10.21203/rs.3.rs-4779644/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4779644/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eCarbon quantum dots (QDs) sensitized ZnO thin films, prepared by a simple route utilizing sol gel spin coating and hydrothermal method have been investigated for photoelectrochemical (PEC) splitting of water. 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