The photons that make up visible light are indivisible. But certain organic materials can use singlet fission to divide the energy from one photon equally between two molecules. Experiments now reveal the molecular dynamics behind this phenomenon.
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Van Voorhis, T. The birth of an exciton. Nature Phys 11, 300–301 (2015). https://doi.org/10.1038/nphys3290
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DOI: https://doi.org/10.1038/nphys3290
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