Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 5, 2012
Previous Article Next Article

3D branched nanowire heterojunction photoelectrodes for high-efficiency solar water splitting and H2 generation

Author affiliations

Abstract

We report the fabrication of a three dimensional branched ZnO/Si heterojunction nanowire array by a two-step, wafer-scale, low-cost, solution etching/growth method and its use as photoelectrode in a photoelectrochemical cell for high efficiency solar powered water splitting. Specifically, we demonstrate that the branched nanowire heterojunction photoelectrode offers improved light absorption, increased photocurrent generation due to the effective charge separation in Si nanowire backbones and ZnO nanowire branching, and enhanced gas evolution kinetics because of the dramatically increased surface area and decreased radius of curvature. The branching nanowire heterostructures offer direct functional integration of different materials for high efficiency water photoelectrolysis and scalable photoelectrodes for clean hydrogen fuel generation.

Graphical abstract: 3D branched nanowire heterojunction photoelectrodes for high-efficiency solar water splitting and H2 generation

Back to tab navigation

Article information


Submitted
09 Dec 2011
Accepted
18 Jan 2012
First published
24 Jan 2012

Nanoscale, 2012,4, 1515-1521
Article type
Paper

3D branched nanowire heterojunction photoelectrodes for high-efficiency solar water splitting and H2 generation

K. Sun, Y. Jing, C. Li, X. Zhang, R. Aguinaldo, A. Kargar, K. Madsen, K. Banu, Y. Zhou, Y. Bando, Z. Liu and D. Wang, Nanoscale, 2012, 4, 1515
DOI: 10.1039/C2NR11952H

Social activity

Search articles by author

Spotlight

Advertisements