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%.
This is a preview of subscription content, access via your institution
Access options
Access Nature and 54 other Nature Portfolio journals
Get Nature+, our best-value online-access subscription
$29.99 /Â 30Â days
cancel any time
Subscribe to this journal
Receive 12 digital issues and online access to articles
$119.00 per year
only $9.92 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
References
Lewis, N. S. Science 351, aad1920 (2016).
Olah, G. A. Angew. Chem. Int. Edn 52, 104–107 (2013).
Sambur, J. B., Novet, T. & Parkinson, B. A. Science 330, 63–66 (2010).
Yan, Y. et al. Nat. Energy 2, 17052 (2017).
Van Noorden, R. Nature http://doi.org/b5rc (2012).
Padilha, L. A. et al. Nano Lett. 13, 1092–1099 (2013).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zamkov, M. Solar hydrogen generation: Exceeding 100% efficiency. Nat Energy 2, 17072 (2017). https://doi.org/10.1038/nenergy.2017.72
Published:
DOI: https://doi.org/10.1038/nenergy.2017.72