Spin Fine Structure Reveals Biexciton Geometry in an Organic Semiconductor

K. M. Yunusova; S. L. Bayliss; T. Chanelière; V. Derkach; J. E. Anthony; A. D. Chepelianskii; L. R. Weiss

doi:10.1103/PhysRevLett.125.097402

Spin Fine Structure Reveals Biexciton Geometry in an Organic Semiconductor

K. M. Yunusova, S. L. Bayliss, T. Chanelière, V. Derkach, J. E. Anthony, A. D. Chepelianskii, L. R. Weiss

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In organic semiconductors, biexcitons are key intermediates in carrier multiplication and exciton annihilation. Their local geometry governs their electronic properties and yet has been challenging to determine. Here, we access the structure of the recently discovered S=2 quintet biexciton state in an organic semiconductor using broadband optically detected magnetic resonance. We correlate the experimentally extracted spin structure with the molecular crystal geometry to identify the specific molecular pairings on which biexciton states reside.

Original language	English
Article number	097402
Journal	Physical Review Letters
Volume	125
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.125.097402
State	Published - Aug 28 2020

Bibliographical note

Funding Information:
We are thankful for insightful discussions with H. Bouchiat and R. H. Friend and acknowledge support from ANR SPINEX and Labex ANR-10-LABX-0039-PALM. L. R. W. acknowledges support from Clare College, Cambridge. The authors declare no competing financial interests.

Publisher Copyright:
© 2020 American Physical Society.

ASJC Scopus subject areas

Physics and Astronomy (all)

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10.1103/PhysRevLett.125.097402

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title = "Spin Fine Structure Reveals Biexciton Geometry in an Organic Semiconductor",

abstract = "In organic semiconductors, biexcitons are key intermediates in carrier multiplication and exciton annihilation. Their local geometry governs their electronic properties and yet has been challenging to determine. Here, we access the structure of the recently discovered S=2 quintet biexciton state in an organic semiconductor using broadband optically detected magnetic resonance. We correlate the experimentally extracted spin structure with the molecular crystal geometry to identify the specific molecular pairings on which biexciton states reside.",

author = "Yunusova, {K. M.} and Bayliss, {S. L.} and T. Chaneli{\`e}re and V. Derkach and Anthony, {J. E.} and Chepelianskii, {A. D.} and Weiss, {L. R.}",

note = "Funding Information: We are thankful for insightful discussions with H. Bouchiat and R. H. Friend and acknowledge support from ANR SPINEX and Labex ANR-10-LABX-0039-PALM. L. R. W. acknowledges support from Clare College, Cambridge. The authors declare no competing financial interests. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

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AU - Chanelière, T.

AU - Derkach, V.

AU - Anthony, J. E.

AU - Chepelianskii, A. D.

AU - Weiss, L. R.

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N2 - In organic semiconductors, biexcitons are key intermediates in carrier multiplication and exciton annihilation. Their local geometry governs their electronic properties and yet has been challenging to determine. Here, we access the structure of the recently discovered S=2 quintet biexciton state in an organic semiconductor using broadband optically detected magnetic resonance. We correlate the experimentally extracted spin structure with the molecular crystal geometry to identify the specific molecular pairings on which biexciton states reside.

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Spin Fine Structure Reveals Biexciton Geometry in an Organic Semiconductor

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Bibliographical note

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