Spin fine structure reveals biexciton geometry in an organic semiconductor

Yunusova, K. M., Bayliss, S. L. , Chanelière, T., Derkach, V., Anthony, J. E., Chepelianskii, A. D. and Weiss, L. R. (2020) Spin fine structure reveals biexciton geometry in an organic semiconductor. Physical Review Letters, 125(9), 097402. (doi: 10.1103/PhysRevLett.125.097402) (PMID:32915607)

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Bayliss, Dr Sam
• Authors: Yunusova, K. M., Bayliss, S. L., Chanelière, T., Derkach, V., Anthony, J. E., Chepelianskii, A. D., and Weiss, L. R.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114
• Published Online: 27 August 2020
• Copyright Holders: Copyright © 2020 American Physical Society
• First Published: First published in Physical Review Letters 125(9): 097402
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher

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