Solar powered hydrogen generation

III-nitride photoelectrodes with Nanostructure: high solar-to-Hydrogen efficiency
Highlighted in “SPIE” in September/October 2014 (http://spie.org/x110173.xml)


This video shows hydrogen gas formation at the counter electrode with oxygen formation at the InGaN semiconductor device under solar illumination.

The chemical stability of nitride materials and the widely tuneable bandgap allows efficient conversion of solar energy to hydrogen as a fuel source.

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IPCE as a function of wavelength for all the GaN based nanoporous structures and the as-grown structure as reference. © 2014 AIP Publishing LLC
Publications:

Utilisation of GaN and InGaN/GaN with nanoporous structures for water splitting
J. Benton, J. Bai and T. Wang
Appl. Phys. Lett. 105, 223902 (2014)

Significantly enhanced performance of an InGaN/GaN nanostructure based photo-electrode for solar power hydrogen generation
J Benton, J Bai and T Wang
Appl. Phys. Lett. 103, 133904 (2013)

Enhancement in Hydrogen Generation Efficiency Using A GaN-based Nanorod Structure
J Benton, J Bai and T Wang
Appl. Phys. Lett. 120, 173905 (2013)