title: Triplet dynamics in pentacene crystals: applications to fission-sensitized photovoltaics.
abstract: The decay and transport of triplet excitons photogenerated via singlet exciton fission in polycrystalline and single-crystalline pentacene is reported. Using transient absorption spectroscopy, we find evidence for diffusion-mediated triplet-triplet annihilation. We estimate monomolecular lifetimes, bimolecular annihilation rate constants, and triplet exciton diffusion lengths. We discuss these results in the context of current solar cell device architectures.
authors.affiliation: Cavendish Laboratory, University of Cambridge, J. J. Thompson Ave, Cambridge, CB30HE, UK.
authors.forename: Andrey D
authors.initials: AD
authors.lastname: Poletayev
authors.forename: Jenny
authors.initials: J
authors.lastname: Clark
authors.forename: Mark W B
authors.initials: MW
authors.lastname: Wilson
authors.forename: Akshay
authors.initials: A
authors.lastname: Rao
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Makino
authors.forename: Shu
authors.initials: S
authors.lastname: Hotta
authors.forename: Richard H
authors.initials: RH
authors.lastname: Friend