Inexpensive, earth-abundant photoabsorbers for solar water splitting have, so far, not demonstrated notable performance. Now, voltage gained from a coaxial heterojunction coupled with nanostructure-enhanced photocurrent results in Cu2O photocathodes demonstrating benchmark water-splitting performance.
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Deutsch, T.G. Coaxial wires coax energy from water. Nat Catal 1, 375–376 (2018). https://doi.org/10.1038/s41929-018-0095-4
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DOI: https://doi.org/10.1038/s41929-018-0095-4