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Surface Stabilities of n-type GaN Dependent on Electrolyte under Photoelectrochemical Reactions
Published online by Cambridge University Press: 13 February 2014
Abstract
The n-type GaN has stability problem of the surface anodic corrosion during the photoelectrochemical reaction for H2 generation. The photoelectrochemical surface stabilities of n-type GaN dependent on the electrolytes were investigated. The flatband potential in HCl obtained from Mott-Schottky plot shifted 0.1 V to positive direction compared with that in H2SO4. The variation of saturated photocurrent of 1 to 3 cycles in H2SO4 was much larger than that of HCl, NaOH and KOH. The surface morphologies also changed by the electrolytes. These results show the absorbed materials on the GaN electrode surface during the photoelectrochemical reactions were changed by the electrolyte and affected the surface reactions.
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- MRS Online Proceedings Library (OPL) , Volume 1647: Symposium GG – Surface/Interface Characterization and Renewable Energy , 2014 , mrsf13-1647-gg03-17
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- Copyright © Materials Research Society 2014