Molecular spin-optical dynamics for optoelectronics

Emrys W. Evans

doi:10.1117/12.2677447

5 October 2023 Molecular spin-optical dynamics for optoelectronics

Emrys W. Evans

Proceedings Volume PC12650, Physical Chemistry of Semiconductor Materials and Interfaces XXII; PC126500B (2023) https://doi.org/10.1117/12.2677447
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

The spin of ground and excited states in organic semiconductors gives the playground for photophysics in optoelectronics: with applications from solar cells to light-emitting diodes (LEDs) using energy and charge transfer processes. Spin controls the functional behaviour: where the longstanding issue in organic LEDs is 1:3 ratio of singlet and triplet excitons from charge recombination. Here magnetic resonance studies can probe the key spin conversion mechanisms between luminescent and dark states. I will present studies of luminescent organic radicals and the doublet-spin energy manifold, which can be interfaced with singlet and triplet excitons to improve performance in near-infrared OLEDs.

Conference Presentation

Citation Download Citation

Emrys W. Evans "Molecular spin-optical dynamics for optoelectronics", Proc. SPIE PC12650, Physical Chemistry of Semiconductor Materials and Interfaces XXII, PC126500B (5 October 2023); https://doi.org/10.1117/12.2677447

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