Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N00: Poster Session II (11am-2pm PST)
Wednesday, March 8, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring Unit: APS
Abstract: N00.00123 : The Entangled Triplet Pair in Rubrene: Quantum Beats
We show that the photons created in rubrene on the occasion of geminate annihilation of a triplet pair can serve as a probe for exciton transport in the crystal lattice. By using a sub-picosecond pulse for photoexcitation, we obtain the time-dependence of the probability of photon emission over 6 time-decades using time-correlated single photon counting. Transport in one, two, or three dimensions can be distinguished and identified on different time scales after photoexcitation, from picoseconds to microseconds. Hopping times and hopping anisotropies can be derived, and temperature and magnetic-field dependence can then provide additional information.
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