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Solar hydrogen generation: Exceeding 100% efficiency

Nature Energy volume 2, Article number: 17072 (2017) | Download Citation

Multiple exciton generation, in which two electron–hole pairs are generated from the absorption of one high-energy photon, has been demonstrated to improve efficiency in quantum-dot-based solar cells. Now, a photoelectrochemical system using PbS quantum dots is shown to drive hydrogen evolution with external quantum efficiency over 100%.

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  1. Mikhail Zamkov at the Center for Photochemical Sciences, Department of Physics, Bowling Green State University, Bowling Green, Ohio 43403, USA.

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Correspondence to Mikhail Zamkov.

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