Title :
Hydrogen generation using nitride photoelectrode
Author :
Ohkawa, Kazuhiro
Author_Institution :
Dept. of Appl. Phys., Tokyo Univ. of Sci., Tokyo, Japan
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.
Keywords :
III-V semiconductors; catalysis; electrodes; gallium compounds; hydrogen production; wide band gap semiconductors; GaN; GaN photoelectrode efficiency; GaN photoelectrode stability; bandgap; hydrogen generation; irradiated photon-to-current conversion efficiency; nitride photoelectrode; photocatalyst; wavelength region; Energy conversion; Etching; Gallium nitride; Hydrogen; Photoconductivity; Surface morphology; System-on-a-chip;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
