Design and fabrication of sandwich-structured α-Fe2O3/Au/ZnO photoanode for photoelectrochemical water splitting

Design and fabrication of sandwich-structured α-Fe2O3/Au/ZnO photoanode for photoelectrochemical... α-Fe2O3/Au/ZnO hetrostructured thin films were fabricated using chemical spray pyrolysis technique and implemented as photoanode for photoelectrochemical (PEC) water splitting. Photoactivity of α-Fe2O3/Au/ZnO electrodes for PEC water oxidation under solar radiation was efficiently improved as compared to that for α-Fe2O3, α-Fe2O3/Au and α-Fe2O3/ZnO electrodes. The α-Fe2O3/Au/ZnO photoanode displayed a significant increase in photocurrent density of 250µA/cm2, as compared to α-Fe2O3 (photocurrent density~27µA/cm2), at 0.5V vs. SCE in 0.5M NaOH under AM 1.5G illumination indicating enhanced optical absorption and charge transportation. The presence of Au layer favored the charge transfer from α-Fe2O3 to ZnO via high energy coupled surface plasmons. The charge transfer kinetics was further improved by tuning of the surface plasmon resonance (SPR) band of Au nanoparticles (NPs) using electric field assisted spray pyrolysis. The maximum photocurrent density of 500µA/cm2 (at 0.5V vs. SCE) was obtained for α-Fe2O30.5kV/Au/ZnO electrode. The optimized design using Au sandwiched layer between two different band gap semiconductors with creation of different hetrojunctions (α-Fe2O3/ZnO and ZnO/Au) presented a configuration with enhanced optoelectronic properties, which is highly useful for PEC water splitting. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Solar Energy Materials and Solar Cells Elsevier

Design and fabrication of sandwich-structured α-Fe2O3/Au/ZnO photoanode for photoelectrochemical water splitting

Loading next page...
 
/lp/elsevier/design-and-fabrication-of-sandwich-structured-fe2o3-au-zno-photoanode-VysD0IlW3Z
Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier B.V.
ISSN
0927-0248
D.O.I.
10.1016/j.solmat.2018.01.005
Publisher site
See Article on Publisher Site

Abstract

α-Fe2O3/Au/ZnO hetrostructured thin films were fabricated using chemical spray pyrolysis technique and implemented as photoanode for photoelectrochemical (PEC) water splitting. Photoactivity of α-Fe2O3/Au/ZnO electrodes for PEC water oxidation under solar radiation was efficiently improved as compared to that for α-Fe2O3, α-Fe2O3/Au and α-Fe2O3/ZnO electrodes. The α-Fe2O3/Au/ZnO photoanode displayed a significant increase in photocurrent density of 250µA/cm2, as compared to α-Fe2O3 (photocurrent density~27µA/cm2), at 0.5V vs. SCE in 0.5M NaOH under AM 1.5G illumination indicating enhanced optical absorption and charge transportation. The presence of Au layer favored the charge transfer from α-Fe2O3 to ZnO via high energy coupled surface plasmons. The charge transfer kinetics was further improved by tuning of the surface plasmon resonance (SPR) band of Au nanoparticles (NPs) using electric field assisted spray pyrolysis. The maximum photocurrent density of 500µA/cm2 (at 0.5V vs. SCE) was obtained for α-Fe2O30.5kV/Au/ZnO electrode. The optimized design using Au sandwiched layer between two different band gap semiconductors with creation of different hetrojunctions (α-Fe2O3/ZnO and ZnO/Au) presented a configuration with enhanced optoelectronic properties, which is highly useful for PEC water splitting.

Journal

Solar Energy Materials and Solar CellsElsevier

Published: May 1, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off