External magnetic field-induced circularly polarized luminescence and electroluminescence from optically inactive thermally activated delayed fluorescence material 4CzIPN

[摘要] An achiral optically inactive organic luminophore, 4CzIPN, exhibits circularly polarized thermally activated delayed fluorescence when photoexcited under an external magnetic field. By embedding this luminophore in an active emission layer, an external-magnetic-field-induced circularly polarized electroluminescent device is developed in this study. The Faraday geometry of the applied magnetic field completely controls the direction of rotation of 4CzIPN-derived circularly polarized luminescence and electroluminescence.

[发布日期] 2023-10-20

[关键词] chiral;circularly polarized organic light-emitting diode;4CzIPN;electroluminescence;magnetic circular dichroism;magnetic circularly polarized luminescence;MCP-OLED device;thermally activated delayed fluorescence