Direct Detection of Singlet-Triplet Interconversion in OLED Magnetoelectroluminescence with a Metal-Free Fluorescence-Phosphorescence Dual Emitter

URN to cite this document:: urn:nbn:de:bvb:355-epub-417466
DOI to cite this document:: 10.5283/epub.41746

Ratzke, Wolfram ; Bange, Sebastian

; Lupton, John M.

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Date of publication of this fulltext: 09 Mar 2020 10:44

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Abstract

We demonstrate that a simple phenazine derivative can serve as a dual emitter for organic light-emitting diodes, showing simultaneous luminescence from the singlet and triplet excited states at room temperature without the need of heavy-atom substituents. Although devices made with this emitter achieve only low quantum efficiencies of < 0.2%, changes in fluorescence and phosphorescence intensity ...