Localization lengthscales of triplet excitons in singlet fission materials
Bayliss, Sam L
Thorley, Karl J
Anthony, John E
Chepelianskii, Alexei D
Physical Review B
MetadataShow full item record
Bayliss, S. L., Thorley, K. J., Anthony, J. E., Bouchiat, H., Greenham, N., & Chepelianskii, A. D. (2015). Localization lengthscales of triplet excitons in singlet fission materials. Physical Review B, 92 https://doi.org/10.1103/PhysRevB.92.115432
We measure the dielectric confinement lengthscales of triplet excitons in organic semiconductors by jointly measuring their microwave-domain electric and magnetic susceptibilities. We apply this technique to characterize triplet excitons in two singlet fission materials with distinct solid-state packing, and correlate the extracted localization lengthscales with the role of the excitonic environment. Using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization lengthscales, highlighting the role of local anisotropy on the properties of excitonic triplet states.
Host Item: https://www.repository.cam.ac.uk/handle/1810/250509
We acknowledge support from the Engineering and Physical Sciences Research Council [Grants No. EP/G060738/1], the Royal Society International Exchange Scheme and Investissements d’Avenir du LabEx PALM (ANR-10-LABX-0039-PALM). A. D. C. acknowledges support from and St Catharine’s College, Cambridge. S. L. B. is grateful for support from the EPSRC Supergen SuperSolar Project, and Magdalene College, Cambridge. J. E. A. and K. J. T. thank the National Science Foundation (CMMI-1255494) for support of organic semiconductor synthesis.
External DOI: https://doi.org/10.1103/PhysRevB.92.115432
This record's URL: https://www.repository.cam.ac.uk/handle/1810/250500