Inner Layer Control of Performance in a Dye-Sensitized Photoelectrosynthesis Cell

Wang, Degao; Farnum, Byron H.; Sheridan, Matthew V.; Marquard, Seth L.; Sherman, Benjamin D.; Meyer, Thomas J.

doi:10.1021/acsami.7b00225

Title: Inner Layer Control of Performance in a Dye-Sensitized Photoelectrosynthesis Cell

Journal Article · Tue Feb 28 00:00:00 EST 2017 · ACS Applied Materials and Interfaces

DOI:https://doi.org/10.1021/acsami.7b00225· OSTI ID:1388204

Wang, Degao ^[1]; Farnum, Byron H. ^[1]; Sheridan, Matthew V. ^[1]; Marquard, Seth L. ^[1];

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Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Chemistry

Interfacial charge transfer and core-shell structures play important roles in dye-sensitized photoelectrosynthesis cells (DSPEC) for water splitting into H₂ and O₂. An important element in the design of the photoanode in these devices is a core/shell structure which controls local electron transfer dynamics. Here, we introduce a new element, an internal layer of Al₂O₃ lying between the Sb:SnO₂/TiO₂ layers in a core/shell electrode which can improve photocurrents by up to 300%. In these structures, the results of photocurrent, transient absorption, and linear scan voltammetry measurements point to an important role for the Al₂O₃ layer in controlling internal electron transfer within the core/shell structure.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Solar Fuels (UNC EFRC)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001011

OSTI ID:: 1388204

Journal Information:: ACS Applied Materials and Interfaces, Vol. 9, Issue 39; Related Information: UNC partners with University of North Carolina (lead); Duke University; University of Florida; Georgia Institute of Technology; University; North Carolina Central University; Research Triangle Institute; ISSN 1944-8244

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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Visible photoelectrochemical water splitting into H ₂ and O ₂ in a dye-sensitized photoelectrosynthesis cell Alibabaei, Leila; Sherman, Benjamin D.; Norris, Michael R. Proceedings of the National Academy of Sciences, Vol. 112, Issue 19 https://doi.org/10.1073/pnas.1506111112	journal	April 2015
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Cited By (3)

A stable dye-sensitized photoelectrosynthesis cell mediated by a NiO overlayer for water oxidation Wang, Degao; Niu, Fujun; Mortelliti, Michael J. Proceedings of the National Academy of Sciences, Vol. 117, Issue 23 https://doi.org/10.1073/pnas.1821687116	journal	September 2019
Core–shell structured titanium dioxide nanomaterials for solar energy utilization Li, Wei; Elzatahry, Ahmed; Aldhayan, Dhaifallah Chemical Society Reviews, Vol. 47, Issue 22 https://doi.org/10.1039/c8cs00443a	journal	January 2018
Stabilized photoanodes for water oxidation by integration of organic dyes, water oxidation catalysts, and electron-transfer mediators Wang, Degao; Eberhart, Michael S.; Sheridan, Matthew V. Proceedings of the National Academy of Sciences, Vol. 115, Issue 34 https://doi.org/10.1073/pnas.1802903115	journal	August 2018

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
catalysis (homogeneous)
catalysis (heterogeneous)
solar (photovoltaic)
solar (fuels)
photosynthesis (natural and artificial)
hydrogen and fuel cells
electrodes - solar
charge transport
materials and chemistry by design
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Title: Inner Layer Control of Performance in a Dye-Sensitized Photoelectrosynthesis Cell

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