Low-temperature magnetoelectroluminescence of organic light-emitting diodes: Separating excitonic effects from carrier-pair singlet-triplet mixing

URN to cite this document:: urn:nbn:de:bvb:355-epub-586738
DOI to cite this document:: 10.5283/epub.58673

Braun, Felix

; Scharff, Tobias ; Bange, Sebastian

; Jiang, Wei ; Darwish, Tamim A.

; Burn, Paul L.

; Mkhitaryan, Vagharsh V.

; Lupton, John M.

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Date of publication of this fulltext: 18 Jul 2024 09:03

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Abstract

Low-temperature magnetoelectroluminescence (MEL) of organic light-emitting diodes (OLEDs) reveals a near-complete suppression of electroluminescence at strong magnetic fields due to the high degree of thermal spin polarization (TSP) arising when the Zeeman energy exceeds the thermal energy. In addition to TSP, spin mixing within the Coulombically bound carrier pairs can arise, as can interactions ...