Triplet Dynamics in Pentacene Crystals: Applications to Fission‐Sensitized Photovoltaics
- 27 December 2013
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 26 (6), 919-924
- https://doi.org/10.1002/adma.201302427
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.Keywords
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