Organic electroluminescent materials and devices
AssigneeUniversal Display Corporation
InventorsCHUN LIN, TYLER FLEETHAM, MICHAEL S. WEAVER
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Abstract
Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.
Claims20
An organic light emitting device (OLED) comprising, sequentially:
- an anode;
- a hole transporting layer;
- an emissive region;
- an electron transporting layer;
- and
- a cathode;
- wherein the emissive region comprises:
- a first compound;
- a second compound;
- and
- a third compound;
- wherein the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature;
- wherein the first compound is an Ir coordination complex;
- wherein the second compound meets at least one of the following conditions:
- (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature;
- and
- (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature;
- wherein the third compound is a fluorescent compound functioning as an emitter in said OLED at room temperature;
- and
- wherein the said OLED emits a luminescent emission comprising an emission component from the S1 energy of the third compound when a voltage is applied across the said OLED;
- wherein at least 65% of the emission from the said OLED is produced from the third compound with a luminance of at least 10 cd/m2.
An organic light emitting device (OLED) comprising, sequentially:
- an anode;
- a hole transporting layer;
- an emissive region;
- an electron transporting layer;
- and
- a cathode;
- wherein the emissive region comprises:
- a first compound;
- a second compound;
- and
- a third compound;
- wherein the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature;
- wherein the first compound is an Ir coordination complex;
- wherein the second compound is capable of functioning as a TADF emitter in an OLED at room temperature;
- wherein the third compound is a fluorescent compound functioning as an emitter in said OLED at room temperature;
- and
- wherein the said OLED emits a luminescent emission comprising an emission component from the S1 energy of the third compound when a voltage is applied across the said OLED;
- wherein at least 65% of the emission from the said OLED is produced from the third compound with a luminance of at least 10 cd/m2.
A consumer product comprising an organic light emitting device (OLED) comprising, sequentially:
- an anode;
- a hole transporting layer;
- an emissive region;
- an electron transporting layer;
- and
- a cathode;
- wherein the emissive region comprises:
- a first compound;
- a second compound;
- and
- a third compound;
- wherein the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature;
- wherein the first compound is an Ir coordination complex;
- wherein the second compound meets at least one of the following conditions:
- (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature;
- and
- (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature;
- wherein the third compound is a fluorescent compound functioning as an emitter in said OLED at room temperature;
- and
- wherein the said OLED emits a luminescent emission comprising an emission component from the S1 energy of the third compound when a voltage is applied across the said OLED;
- wherein at least 65% of the emission from the said OLED is produced from the third compound with a luminance of at least 10 cd/m2.
Dependencies are inferred from the claim text.