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 | |
| State | Published - Aug 28 2020 |
Bibliographical note
Publisher Copyright:© 2020 American Physical Society.
Funding
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.
| Funders |
|---|
| Clare College, University of Cambridge |
| Labex ANR-10-LABX-0039-PALM |
| French Agence Nationale de la Recherche |
ASJC Scopus subject areas
- General Physics and Astronomy
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