liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A nanostructured NiO/cubic SiC p-n heterojunction photoanode for enhanced solar water splitting
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Plasma and Coating Physics. Linköping University, Faculty of Science & Engineering.
Oerlikon Balzers, Liechtenstein.
Show others and affiliations
2019 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 7, no 9, p. 4721-4728Article in journal (Refereed) Published
Abstract [en]

Photoelectrochemical (PEC) water-splitting offers a promising method to convert the intermittent solar energy into renewable and storable chemical energy. However, the most studied semiconductors generally exhibit a poor PEC performance including low photocurrent, small photovoltage, and/or large onset potential. In this work, we demonstrate a significant enhancement of photovoltage and photocurrent together with a substantial decrease of onset potential by introducing electrocatalytic and p-type NiO nanoclusters on an n-type cubic silicon carbide (3C-SiC) photoanode. Under AM1.5G 100 mW cm(-2) illumination, the NiO-coated 3C-SiC photoanode exhibits a photocurrent density of 1.01 mA cm(-2) at 0.55 V versus reversible hydrogen electrode (V-RHE), a very low onset potential of 0.20 V-RHE and a high fill factor of 57% for PEC water splitting. Moreover, the 3C-SiC/NiO photoanode shows a high photovoltage of 1.0 V, which is the highest value among reported photovoltages. The faradaic efficiency measurements demonstrate that NiO also protects the 3C-SiC surface against photo-corrosion. The impedance measurements evidence that the 3C-SiC/NiO photoanode facilitates the charge transfer for water oxidation. The valence-band position measurements confirm the formation of the 3C-SiC/NiO p-n heterojunction, which promotes the separation of the photogenerated carriers and reduces carrier recombination, thus resulting in enhanced solar water-splitting.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2019. Vol. 7, no 9, p. 4721-4728
National Category
Other Chemistry Topics
Identifiers
URN: urn:nbn:se:liu:diva-155901DOI: 10.1039/c9ta00020hISI: 000460687400042OAI: oai:DiVA.org:liu-155901DiVA, id: diva2:1301579
Note

Funding Agencies|Swedish Research Council (Vetenskapsradet) [621-2014-5461, 2018-04670, 621-2014-5825]; Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS) [2016-00559]; Swedish Foundation for International Cooperation in Research and Higher Education (STINT) [CH2016-6722]; AForsk Foundation [16-399]; Stiftelsen Olle Engkvist Byggmastare [189-0243]; EU project CHALLENGE; Knut and Alice Wallenberg Foundation [KAW 2014.0276]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO Mat LiU) [2009 00971]

Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-02

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Shi, YuchenEkeroth, Sebastian

Search in DiVA

By author/editor
Jian, JingxinShi, YuchenEkeroth, SebastianSyväjärvi, MikaelYakimova, RositsaHelmersson, UlfSun, Jianwu
By organisation
Semiconductor MaterialsFaculty of Science & EngineeringPlasma and Coating Physics
In the same journal
Journal of Materials Chemistry A
Other Chemistry Topics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 144 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf