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Energy Transitions Research at the University of Cambridge


WP4: Organic-inorganic interfaces (Lead: Hugo Bronstein)

Splitting of spin-singlet excitons into two spin-triplet excitons each of half the singlet energy (‘singlet fission’) provide a very efficient means to down-convert high energy visible photons to near-IR photon pairs that may be then harvested in a semiconductor with near-IR bandgap.

Shockley-Queisser efficiency limit can potentially be overcome.

Our aim is to boost the efficiency of standard silicon solar cells using an add-on layer to double the current collected from green and blue photons.

Singlet fission PV schematic

Link to detailed presentation