Photovoltaics

Separating multiple excitons

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Scientists have demonstrated an efficient process for generating multiple excitons in adjacent silicon nanocrystals from a single high-energy photon. Their findings could prove useful for a wide range of photovoltaic applications.

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Figure 1: Two proposed mechanisms of multiple exciton generation in QD solids, represented by two electronically coupled QDs.

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Correspondence to Arthur J. Nozik.

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Nozik, A. Separating multiple excitons. Nature Photon 6, 272–273 (2012) doi:10.1038/nphoton.2012.78

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