Lighting device for motor vehicles having an emitter that emits light by thermally activated delayed fluorescence
AssigneeSamsung Display Co., Ltd.
InventorsDaniel Volz, Harald Fluegge
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Abstract
The present invention relates to a lighting device for a motor vehicle, comprising at least one organic light-emitting diode (OLED) having an emission layer B, wherein the emission layer B comprises at least one emitter E that emits light by means of thermally activated delayed fluorescence (TADF). The present invention further relates to a method of generating light by means of such an OLED at an operating temperature above room temperature.
Claims13
A motor vehicle comprising at least one lighting device, wherein the lighting device comprises at least one organic light-emitting diode (OLED) having an emission layer B, wherein the emission layer B comprises at least one emitter E that emits light by thermally activated delayed fluorescence (TADF) and at least one host material;
- wherein the emission layer B consists of exclusively materials having a glass transition temperature exceeding 120° C., and
- wherein triplet (T1) energy level of the host material is higher than triplet (T1) energy level of the emitter E, and singlet (S1) energy level of the host material is higher than singlet (S1) energy level of the emitter E.
Dependencies are inferred from the claim text.