Persistent singlet electronic character in the multiexcitonic triplet-pair state of strongly coupled pentacene singlet fission dimers

Atandrita Bhattacharyya, Namana Venkatareddy, Sanjoy Patra +5

Singlet fission converts an optically excited singlet state into a spin-entangled triplet pair state (TT${}_1$)${}^1$ that can, in principle, yield two free triplets for photovoltaics…