Intensity modulated photocurrent spectroscopy to investigate hidden kinetics at hybrid perovskite-electrolyte interface

Intensity modulated photocurrent spectroscopy to investigate hidden kinetics at hybrid perovskite-electrolyte interface | 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 Intensity modulated photocurrent spectroscopy to investigate hidden kinetics at hybrid perovskite-electrolyte interface Priya Srivastava, Ramesh Kumar, Hemant Ronchiya, Monojit Bag This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-1554329/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract The numerous assorted accounts to the fundamental questions of ion migration in hybrid perovskites are making the picture further intricate. The review of photo-induced ion migration using small perturbation frequency domain techniques other than impedance spectroscopy is more crucial now. Herein, we probe into this by investigating perovskite-electrolyte (Pe-E) and polymer-aqueous electrolyte (Po-aqE) interface using intensity modulated photocurrent spectroscopy (IMPS) in addition to photoelectrochemical impedance spectroscopy (PEIS). We reported that the electronic-ionic interaction in hybrid perovskites including the low-frequency ion/charge transfer and recombination kinetics at the interface leads to the spiral feature in IMPS Nyquist plot of perovskite-based devices. This spiral trajectory for perovskite-electrolyte interface depicts three distinct ion kinetics going on at the different time scales which can be more easily unveiled by IMPS rather than PEIS. Hence, IMPS is a promising alternative to PEIS. We used Peter’s method of interpretation of IMPS plot in photoelectrochemistry to estimate charge transfer efficiency \(\left({Q}_{ste}\right)\) from the Rate Constant Model. The \({Q}_{ste}\) at low-frequency for Pe-E interface exceeds unity due to ion migration induced modified potential across the perovskite active layer. Hence, ion migration and mixed electronic-ionic conductivity of hybrid perovskites are responsible for the extraordinary properties of this material. Full Text Additional Declarations No competing interests reported. Supplementary Files SupportingInformation.pdf Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Major revision 30 May, 2022 Reviews received at journal 02 May, 2022 Reviewers agreed at journal 27 Apr, 2022 Reviewers agreed at journal 18 Apr, 2022 Reviewers invited by journal 17 Apr, 2022 Editor assigned by journal 16 Apr, 2022 Editor invited by journal 16 Apr, 2022 Submission checks completed at journal 16 Apr, 2022 First submitted to journal 13 Apr, 2022 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. 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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-1554329","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":99041264,"identity":"32738fdf-5591-442a-beb6-51706f003f3b","order_by":0,"name":"Priya Srivastava","email":"","orcid":"","institution":"Advanced Research in Electrochemical Impedance Spectroscopy Laboratory, Indian Institute of Technology Roorkee, Roorkee 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Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-1554329/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-1554329/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe numerous assorted accounts to the fundamental questions of ion migration in hybrid perovskites are making the picture further intricate. The review of photo-induced ion migration using small perturbation frequency domain techniques other than impedance spectroscopy is more crucial now. Herein, we probe into this by investigating perovskite-electrolyte (Pe-E) and polymer-aqueous electrolyte (Po-aqE) interface using intensity modulated photocurrent spectroscopy (IMPS) in addition to photoelectrochemical impedance spectroscopy (PEIS). We reported that the electronic-ionic interaction in hybrid perovskites including the low-frequency ion/charge transfer and recombination kinetics at the interface leads to the spiral feature in IMPS Nyquist plot of perovskite-based devices. This spiral trajectory for perovskite-electrolyte interface depicts three distinct ion kinetics going on at the different time scales which can be more easily unveiled by IMPS rather than PEIS. Hence, IMPS is a promising alternative to PEIS. We used Peter\u0026rsquo;s method of interpretation of IMPS plot in photoelectrochemistry to estimate charge transfer efficiency \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\(\\left({Q}_{ste}\\right)\\)\u003c/span\u003e\u003c/span\u003e from the Rate Constant Model. The \u003cspan class=\"InlineEquation\"\u003e\u003cspan class=\"mathinline\"\u003e\\({Q}_{ste}\\)\u003c/span\u003e\u003c/span\u003e at low-frequency for Pe-E interface exceeds unity due to ion migration induced modified potential across the perovskite active layer. Hence, ion migration and mixed electronic-ionic conductivity of hybrid perovskites are responsible for the extraordinary properties of this material.\u003c/p\u003e","manuscriptTitle":"Intensity modulated photocurrent spectroscopy to investigate hidden kinetics at hybrid perovskite-electrolyte interface","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2022-04-18 20:20:24","doi":"10.21203/rs.3.rs-1554329/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Major revision","date":"2022-05-30T08:25:40+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2022-05-02T22:36:13+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"7f6ea64a-3790-47fa-a080-1c94d7a7337a","date":"2022-04-27T07:02:10+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"13b24fe6-65d5-4e99-a8ad-9d9a72f0d24c","date":"2022-04-18T14:44:18+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2022-04-17T12:09:52+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2022-04-16T06:23:33+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2022-04-16T05:49:19+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2022-04-16T05:42:54+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2022-04-13T12:38:35+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"29ac3c05-761e-4fd5-be76-1c99f7b41f9a","owner":[],"postedDate":"April 18th, 2022","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2022-07-08T07:29:17+00:00","versionOfRecord":[],"versionCreatedAt":"2022-04-18 20:20:24","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-1554329","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-1554329","identity":"rs-1554329","version":["v1"]},"buildId":"7rjqhiLT3MXkJMwkYKINL","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}