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  4. Optimization and Stabilization of Electrodeposited Cu2ZnSnS4 Photocathodes for Solar Water Reduction
 
research article

Optimization and Stabilization of Electrodeposited Cu2ZnSnS4 Photocathodes for Solar Water Reduction

Rovelli, Lorenzo
•
Tilley, S. David
•
Sivula, Kevin  
2013
ACS Applied Materials & Interfaces

Cu2ZnSnS4 (CZTS) is a promising p-type semiconductor that has not yet been extensively investigated for solar fuel production via water splitting. Here, we optimize and compare two different electrodeposition routes (simultaneous and sequential) for preparing CZTS electrodes. More consistent results are observed with the simultaneous route. In addition, the effect of etching and the presence of a CdS buffer layer on the photocurrent are investigated. Finally, we demonstrate for the first time the stabilization of these electrodes using protecting overlayers deposited by atomic layer deposition (ALD). Our best performing protected electrodes (Mo/CZTS/CdS/AZO/TiO2/Pt) exhibited a photocurrent of over 1 mA cm(-2) under standard one sun illumination conditions and a significant improvement in stability over unprotected electrodes.

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Type
research article
DOI
10.1021/am402096r
Web of Science ID

WOS:000323875800053

Author(s)
Rovelli, Lorenzo
Tilley, S. David
Sivula, Kevin  
Date Issued

2013

Publisher

Amer Chemical Soc

Published in
ACS Applied Materials & Interfaces
Volume

5

Issue

16

Start page

8018

End page

8024

Subjects

photoelectrochemical

•

CZTS

•

ALD

•

protecting overlayers

•

water splitting

•

hydrogen

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIMNO  
Available on Infoscience
October 1, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/95594
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