Red–green–blue–yellow (RGBY) magnetic circularly polarized electroluminescence from iridium(III)-magnetic circularly polarized organic light-emitting diodes

Enhancement of circularly polarized electroluminescence via reflection reversal under a magnetic field

“…That is, the application of an external magnetic field allows us to develop phosphorescent CP-OLEDs without any chiral phosphors, namely, magnetic CP-OLED (MCP-OLEDs). 46 We also reported that OLEDs with varying concentrations of an excimer-emissive heteroleptic cyclometalated Pt( ii ) complex as an emitting dopant exhibit multi-colour magnetically induced CPEL (MCPEL). At lower doping levels of the Pt( ii ) luminophore in the EML, monomer-based emission-enriched bluish CPEL was observed from the devices upon the application of a magnetic field.…”

Magnetically Induced Near-Infrared Circularly Polarized Electroluminescence from an Achiral Perovskite Light-Emitting Diode

“…As a new approach, we have been focusing on the magneto-optical effect on a luminophore in the excited state and previously reported that the application of an external magnetic field to organic light-emitting diodes (OLEDs) leads to the generation of circularly polarized electroluminescence (CPEL) [15][16][17]. As representative examples, we have developed magnetic circularly polarized OLED systems by incorporating optically inactive, racemic phosphorescent bis-and tris-cyclometalated iridium(III) complexes as emitting dopants [15].…”

“…As representative examples, we have developed magnetic circularly polarized OLED systems by incorporating optically inactive, racemic phosphorescent bis-and tris-cyclometalated iridium(III) complexes as emitting dopants [15]. Doping various iridium(III) luminophores into the emitting layer allowed us to obtain red-green-blue-yellow full-color, circularly polarized electroluminescent devices [16]. Furthermore, employing an excimer-emissive heteroleptic cyclometalated platinum(II) complex as a single emitting dopant allowed us to obtain multi-color CPEL under a magnetic field, where the electroluminescence (EL) intensity ratio of the monomer-and excimer-based emissions was tuned by the doping level of the platinum(II) luminophore [17].…”