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Author(s): João Azevedo
S. David Tilley
Marcel Schreier
Morgan Stefik
Célia Sousa
João Pedro Araújo
Adélio Mendes
Michael Grätzel
Matthew T. Mayer
Title: Tin oxide as stable protective layer for composite cuprous oxide water-splitting photocathodes
Issue Date: 2016
Abstract: For a sustainable future, efficient solar energy harvesting and storage is required. Solar hydrogen production from photoelectrochemical water splitting is a promising technology and, in particular, cuprousoxide photocathodes are interesting photoelectrodes due to their high efficiency and low cost. However,chemical instability inhibits practical application of such devices. This work reports a novel strategy forprotecting cuprous oxide from photocorrosion, wherein a thin SnO2 overlayer enables increased stabilityover previous reports utilizing TiO2 protective layers. Performance and stability are influenced by the filmthickness, post-deposition steam treatment, and the nature of the heterojunction interface. Stability over57 h of sustained photoelectrochemical water reduction, maintaining 90% of initial photocurrent, isachieved.
Subject: Ciências Tecnológicas
Technological sciences
Related Information: info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/321315/Building Integrated Dye Sensitized Solar Cells/BI-DSC
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Revista Científica Internacional
FEUP - Artigo em Revista Científica Internacional

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