Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session M06: Ultrafast Phenomena in Solid-State
2:00 PM–3:48 PM,
Wednesday, June 7, 2023
Room: 206 A
Chair: Niranjan Shivaram, Purdue University
Abstract: M06.00005 : Imaging Singlet Fission using Angle-Resolved Photoemission*
2:48 PM–3:00 PM
Presenter:
Zachary H Withers
(Stony Brook University)
Authors:
Zachary H Withers
(Stony Brook University)
Sergii Chernov
(Stony Brook University)
Jin Bakalis
(Stony Brook University (SUNY))
Alice Kunin
(Stony Brook University (SUNY))
Michael G White
(Stony Brook University)
Gerd Schönhense
(Johannes Gutenberg-Universität)
Thomas K Allison
(Stony Brook University (SUNY))
1Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, USA
2Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
3Johannes Gutenberg-Universität, Institut für Physik, D-55099 Mainz, Germany
Many organic semiconductors exhibit a process called singlet fission, where an initially excited singlet exciton splits into two triplet excitons. This process makes these molecular materials attractive candidates for photovoltaic applications due to the additional charge carriers. However, the intermediate states involved in singlet exciton fission remain highly debated. High-performance time- and angle-resolved photoemission (tr-ARPES) using the combination of MHz repetition-rate high-harmonic generation (HHG) and time-of-flight momentum microscopy can be used to image the molecular orbitals involved in singlet fission [1,2,3]. We present results on the optimization of crystalline pentacene thin films for photoemission and initial tr-ARPES results elucidating the correlated triplet-pair intermediate states.
References
1. C. Corder, et al., Struct. Dyn. 5, 054301 (2018).
2. A. Kunin, et al., Phys. Rev. Letts. 130, 046202 (2023).
3. Wallauer, et al., Science, 371, 1056-1059, (2021).
*DOE: DESC0022004, AFOSR: FA9550-20-1-0259, NSF: GRFP
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700