Quantitative analysis of cyclic voltammetry of redox mono-layers adsorbed on semiconductors: isolating electrode kinetics, lateral interactions and diode currents

Vogel, Yan B.; Molina, Angela; GonzÁlez Sánchez, Joaquín; Ciampi, Simone

Publication:
Quantitative analysis of cyclic voltammetry of redox mono-layers adsorbed on semiconductors: isolating electrode kinetics, lateral interactions and diode currents

dc.contributor.author	Vogel, Yan B.
dc.contributor.author	Molina, Angela
dc.contributor.author	GonzÁlez Sánchez, Joaquín
dc.contributor.author	Ciampi, Simone
dc.contributor.department	Química Física
dc.date.accessioned	2025-01-20T11:13:34Z
dc.date.available	2025-01-20T11:13:34Z
dc.date.issued	2019-05-07
dc.description	© 2019 American Chemical Society. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted Manuscript version of a Published Work that appeared in final form in Analytical Chemistry. To access the final edited and published work see https://doi.org/10.1021/acs.analchem.9b00336
dc.description.abstract	The design of devices whose function span from sensing their environments, to convert light into electricity or to guide chemical reactivity at surfaces, hinges around a correct and complete understanding of the factors at play when charges are transferred across an electrified solid/liquid interface. For semiconductor electrodes in particular, published values for charge transfer kinetic constants are scattered. Furthermore, received wisdom suggests slower charge trans-fer kinetics for semiconductor than for metal electrodes. We have used cyclic voltammetry of ferrocene-modified sili-con photoanodes and photocathodes as the experimental model system, and described a systematic analysis to separate charge transfer kinetics from diode effects and interactions between adsorbed species. Our results suggest that litera-ture values of electron-transfer kinetic constants at semiconductor electrodes are likely to be an underestimate of their actual values. This is revealed by experiments and analytical models, showing that the description of the potential dis-tribution across the semiconductor/monolayer/electrolyte interface has been largely oversimplified.	es
dc.format	application/pdf	es
dc.format.extent	13	es
dc.identifier.citation	Analytical Chemistry, 2019, Vol. 91, Issue 9, pp. 5929–5937
dc.identifier.doi	https://doi.org/10.1021/acs.analchem.9b00336
dc.identifier.issn	Print: 0003-2700
dc.identifier.issn	Electronic: 1520-6882
dc.identifier.uri	http://hdl.handle.net/10201/148810
dc.language	eng	es
dc.publisher	American Chemical Society	es
dc.relation	Fundación Séneca de la Región de Murcia (Projecto 19887/GERM/15) y Ministerio de Economía y Competitividad (Projecto CTQ-2015-65243-P).	es
dc.relation.publisherversion	https://pubs.acs.org/doi/abs/10.1021/acs.analchem.9b00336	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject.other	CDU::5 - Ciencias puras y naturales::54 - Química::544 - Química física	es
dc.title	Quantitative analysis of cyclic voltammetry of redox mono-layers adsorbed on semiconductors: isolating electrode kinetics, lateral interactions and diode currents	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es