Highly anisotropic magnetoresistance of organic light-emitting diodes at geomagnetic field strengths

DOI to cite this document:: 10.5283/epub.54593

Grünbaum, Tobias

; Mkhitaryan, Vagharsh V. ; Schmid, Eva ; Dallinger, Fabian ; Bange, Sebastian

; Jiang, Wei

; Darwish, Tamim A. ; Burn, Paul L. ; Lupton, John M.

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Date of publication of this fulltext: 22 Aug 2023 14:16

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Abstract

At geomagnetic field strengths, polymer organic light-emitting diodes (OLEDs) exhibit a giant anisotropy in magnetoresistance of up to 35%. Comparison of the effect arising from a protonated and an equivalent perdeuterated conjugated polymer, in combination with semiclassical quantum-stochastic modeling, demonstrates that microscopically anisotropic hyperfine-field distributions, on the level ...