Organic monolayers on Si(211) for triboelectricity generation: etching optimization and relationship between the electrochemistry and current output

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dc.contributor.authorHurtado, Cen_AU
dc.contributor.authorLyu, Xen_AU
dc.contributor.authorFerrie, Sen_AU
dc.contributor.authorLe Brun, APen_AU
dc.contributor.authorMacGregor, Men_AU
dc.contributor.authorCiampi, Sen_AU
dc.date.accessioned2024-08-25T23:42:29Zen_AU
dc.date.available2024-08-25T23:42:29Zen_AU
dc.date.issued2022-09-28en_AU
dc.date.statistics2024-08-26en_AU
dc.description.abstractTriboelectric nanogenerators (TENGs) based on sliding silicon-organic monolayer-metal Schottky diodes are an emerging autonomous direct-current (DC) current supply technology. Herein, using conductive atomic force microscopy and electrochemical techniques, we explore the optimal etching conditions toward the preparation of DC TENGs on Si(211), a readily available, highly conductive, and underexplored silicon crystallographic cut. We report optimized conditions for the chemical etching of Si(211) surfaces with subnanometer root-mean-square roughness, explore Si(211) chemical passivation, and unveil a relationship between the electrochemical charge-transfer behavior at the silicon-liquid interface and the zero-applied bias current output from the corresponding dynamic silicon-organic monolayer-platinum system. The overall aim is to optimize the etching and functionalization of the relatively underexplored Si(211) facet, toward its application in out-of-equilibrium Schottky diodes as autonomous power supplies. We also propose the electrochemical behavior of surface-confined redox couples as a diagnostic tool to anticipate whether or not a given surface will perform satisfactorily when used in a TENG design. © 2022 American Chemical Societyen_AU
dc.description.sponsorshipThis work was financially supported by the Australian Research Council (Grants DP190100735, FT190100148, and FT200100301). The authors acknowledge the instruments and expertise of Microscopy Australia at the Future Industries Institute, University of South Australia, enabled by NCRIS, university, and state government support.en_AU
dc.identifier.citationHurtado, C., Lyu, X., Ferrie, S., Le Brun, A. P., MacGregor, M., & Ciampi, S. (2022). Organic monolayers on Si(211) for triboelectricity generation: etching optimization and relationship between the electrochemistry and current output ACS Applied Nano Materials, 5(10), 14263-14274. doi:10.1021/acsanm.2c02006en_AU
dc.identifier.issn2574-0970en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleACS Applied Nano Materialsen_AU
dc.identifier.pagination14263-14274en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/acsanm.2c02006en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15667en_AU
dc.identifier.volume5en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectElectrodesen_AU
dc.subjectEtchingen_AU
dc.subjectSiliconen_AU
dc.subjectAtomic force microscopyen_AU
dc.subjectElectrochemistryen_AU
dc.subjectPassivationen_AU
dc.subjectSchottky barrier diodesen_AU
dc.subjectRedox processen_AU
dc.titleOrganic monolayers on Si(211) for triboelectricity generation: etching optimization and relationship between the electrochemistry and current outputen_AU
dc.typeJournal Articleen_AU
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