Tin oxide as stable protective layer for composite cuprous oxide water-splitting photocathodes

Content Provider	Semantic Scholar
Author	Azevedo, João Lúcio De Tilley, S. David Schreier, Marcel Stefik, Morgan Sousa, Célia T. Araújo, João Pedro Mendes, Adélio Graetzel, Michael Mayer, Matthew T.
Copyright Year	2016
Abstract	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, cuprous oxide 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 for protecting cuprous oxide from photocorrosion, wherein a thin SnO2 overlayer enables increased stability over previous reports utilizing TiO2 protective layers. Performance and stability are influenced by the film thickness, post-deposition steam treatment, and the nature of the heterojunction interface. Stability over 57 h of sustained photoelectrochemical water reduction, maintaining 90% of initial photocurrent, is achieved.
Starting Page	10
Ending Page	16
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.nanoen.2016.03.022
Alternate Webpage(s)	https://repositorio-aberto.up.pt/bitstream/10216/109905/2/214241.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.nanoen.2016.03.022
Volume Number	24
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article