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Long-lived spin-polarized intermolecular exciplex states in thermally activated delayed fluorescence-based organic light-emitting diodes.

ABSTRACT: [Figure: see text].

SUBMITTER: Weissenseel S

PROVIDER: S-EPMC8598001 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Long-lived spin-polarized intermolecular exciplex states in thermally activated delayed fluorescence-based organic light-emitting diodes.

Weissenseel Sebastian S Gottscholl Andreas A Bönnighausen Rebecca R Dyakonov Vladimir V Sperlich Andreas A

Science advances 20211117 47

Spin-spin interactions in organic light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) are pivotal because radiative recombination is largely determined by triplet-to-singlet conversion, also called reverse intersystem crossing (RISC). To explore the underlying process, we apply a spin-resonance spectral hole-burning technique to probe electroluminescence. We find that the triplet exciplex states in OLEDs are highly spin-polarized and show that these states can ...[more]

PMID: 34788086

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