Light harvesting in photosynthesis and photovoltaics may rely on quantum-coherent energy transfer, but experimental verification is hindered by the lossy nature of the molecular systems. Subnanometre-resolved electroluminescence spectroscopy now reveals wavelike intermolecular electronic energy transfer through quantum coherence in artificially constructed donor–acceptor heterodimers at the single-molecule level.
- Fan-Fang Kong
- Xiao-Jun Tian
- J. G. Hou