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Hydrogen Generation Using Nitride Photoelectrode

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Abstract

We developed nitride photoelectrodes to produce hydrogen from water. GaN can split water into hydrogen and oxygen as a photocatalyst with no extra bias applied. The irradiated photon-to-current conversion efficiency was as high as 60-70% in the wavelength region below its bandgap. We confirmed good stability and high efficiency of a GaN photoelectrode.

© 2012 Optical Society of America

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