Ultrafast proton-assisted tunneling through ZrO 2 in dye-sensitized SnO 2 -core/ZrO 2 -shell films.
| Autor: | Swierk JR; Department of Chemistry and Energy Sciences Institute, Yale University, 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA. jrswierk@gmail.com steven.konezny@yale.edu victor.batista@yale.edu charles.schmuttenmaer@yale.edu., McCool NS, Röhr JA, Hedström S, Konezny SJ, Nemes CT, Xu P, Batista VS, Mallouk TE, Schmuttenmaer CA |
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| Jazyk: | angličtina |
| Zdroj: | Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2018 Jul 12; Vol. 54 (57), pp. 7971-7974. |
| DOI: | 10.1039/c8cc04189j |
| Abstrakt: | Core-shell architectures are used to modulate injection and recombination in dye-sensitized photoelectrochemical cells. Here, we demonstrate that exposing SnO2-core/ZrO2-shell films to acid permits photoinduced electron transfer through ZrO2-shells at least 4 nm thick. A novel mechanism of charge transfer is proposed where protonic defects permit ultrafast trap-assisted tunneling of electrons. |
| Databáze: | MEDLINE |
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