Photoelectrochemical Hydrogen Production on InP Nanowire Arrays with Molybdenum Sulfide Electrocatalysts
Nano Letters2014Vol. 14(7), pp. 3715–3719
Citations Over TimeTop 10% of 2014 papers
Lu Gao, Yingchao Cui, Jia Wang, Alessandro Cavalli, Anthony Standing, T.T. Vu, Marcel A. Verheijen, J. E. M. Haverkort, Erik P. A. M. Bakkers, Peter H. L. Notten
Abstract
Semiconductor nanowire arrays are expected to be advantageous for photoelectrochemical energy conversion due to their reduced materials consumption. In addition, with the nanowire geometry the length scales for light absorption and carrier separation are decoupled, which should suppress bulk recombination. Here, we use vertically aligned p-type InP nanowire arrays, coated with noble-metal-free MoS3 nanoparticles, as the cathode for photoelectrochemical hydrogen production from water. We demonstrate a photocathode efficiency of 6.4% under Air Mass 1.5G illumination with only 3% of the surface area covered by nanowires.
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