NDLI: Al-doped ZnO inverse opal networks as efficient electron collectors in BiVO<sub>4</sub> photoanodes for solar water oxidation

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Liwu Baumberg, Jeremy J. Reisner, Erwin
Copyright Year	2014
Abstract	The short diffusion length of photogenerated charge carriers limits the performance of photoelectrodes for solar water splitting. To reduce the distance between where the charges are generated and the location they are scavenged, a conductive Al-doped ZnO inverse opal network is introduced into a BiVO4 photoanode. The conductive inverse opal network serves as an electron collector for the BiVO4 film, which suffers from poor electron transport. The combined heterostructure provides a photocurrent of 1.5 mA cm−2 at 1.23 V vs. RHE, which is threefold higher than a BiVO4 photoanode without any conducting inverse opal network. The significantly enhanced photocurrent produced without intentional doping or oxygen-evolving catalysts, indicates the importance of charge transport and collection in photoelectrodes. Our design has the potential to be applied to other photoelectrochemical systems to improve charge collection and solar energy conversion efficiency.
Starting Page	1402
Ending Page	1408
Page Count	7
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	7
Issue Number	4
Journal	Energy & Environmental Science
DOI	10.1039/c3ee44031a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	RHE Diffusion Water splitting Heterojunction Photocurrent Dopant Photoelectrochemical cell Solar energy
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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