Localization length scales of triplet excitons in singlet fission materials

Sam L. Bayliss; Karl J. Thorley; John E. Anthony; Hélène Bouchiat; Neil C. Greenham; Alexei D. Chepelianskii

doi:10.1103/PhysRevB.92.115432

Localization length scales of triplet excitons in singlet fission materials

Sam L. Bayliss, Karl J. Thorley, John E. Anthony, Hélène Bouchiat, Neil C. Greenham, Alexei D. Chepelianskii

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16 Scopus citations

Abstract

We measure the dielectric confinement length scales 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 length scales with the role of the excitonic environment. By using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization length scales, highlighting the role of local anisotropy on the properties of excitonic triplet states.

Original language	English
Article number	115432
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.92.115432
State	Published - Sep 21 2015

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© 2015 American Physical Society.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We measure the dielectric confinement length scales 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 length scales with the role of the excitonic environment. By using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization length scales, highlighting the role of local anisotropy on the properties of excitonic triplet states.",

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AU - Bayliss, Sam L.

AU - Thorley, Karl J.

AU - Anthony, John E.

AU - Bouchiat, Hélène

AU - Greenham, Neil C.

AU - Chepelianskii, Alexei D.

PY - 2015/9/21

Y1 - 2015/9/21

N2 - We measure the dielectric confinement length scales 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 length scales with the role of the excitonic environment. By using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization length scales, highlighting the role of local anisotropy on the properties of excitonic triplet states.

AB - We measure the dielectric confinement length scales 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 length scales with the role of the excitonic environment. By using the magnetic susceptibility simultaneously determined through our experiments, we compare the independently extracted dielectric and spin-spin localization length scales, highlighting the role of local anisotropy on the properties of excitonic triplet states.

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Localization length scales of triplet excitons in singlet fission materials

Abstract

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