Improved charge separation via Fe-doping of copper tungstate photoanodes

Physical Chemistry Chemical Physics : PCCP
Divya Bohra, Wilson A Smith

Abstract

Photoelectrochemical (PEC) water splitting offers a clean pathway to renewable and sustainable energy in the near future. The key to improving the efficiency of PEC devices is the ability to find materials with suitable optoelectronic properties, and identifying, then overcoming their limitations. In this paper, we explore the photoelectrochemical performance of CuWO4 photoanodes for solar water splitting, and find that charge separation is the dominant limitation for this material. As a result, we attempt to dope the material with Fe, the first such example of doping this semiconductor for PEC water splitting. An improvement in performance is achieved for doped films which show 1.5 times the photocurrent density and a 50% higher charge separation efficiency at 1.23 V vs. RHE.

References

Mar 12, 2008·Inorganic Chemistry·Theodore A BetleyDaniel G Nocera
Nov 11, 2010·Chemical Reviews·Michael G WalterNathan S Lewis
Jan 26, 2013·Physical Chemistry Chemical Physics : PCCP·Satyananda Kishore PilliAndrew M Herring

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Citations

Apr 24, 2016·Biochemical Pharmacology·M HyttiA Kauppinen
Jun 7, 2017·The Journal of Physical Chemistry Letters·Yuan Gao, Thomas W Hamann
Feb 26, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Zheng ChenAdam Slabon
Jan 10, 2017·Chemical Communications : Chem Comm·Yuan Gao, Thomas W Hamann
May 3, 2019·Faraday Discussions·Anirudh Venugopal, Wilson A Smith
May 27, 2016·Accounts of Chemical Research·Charles R Lhermitte, Bart M Bartlett
Oct 30, 2020·ACS Applied Materials & Interfaces·Parisa ShadabipourThomas W Hamann
Mar 20, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Martin DaviAdam Slabon

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