Organic electroluminescent materials and devices
A luminescent materials including donor-acceptor compounds with a nitrogen containing donor connected to the 1-position of a carbazole and triazene acceptor connected at the 9-position is disclosed.
1. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:
an anode;
a cathode; and
an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1:
wherein R f is hydrogen and R a to R e , R g , R 1 and R 2 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein Ar 1 is
wherein Ar 2 and Ar 3 are independently substituted or unsubstituted aryl or heteroaryl, and Ar 1 , Ar 2 , and Ar 3 are not connected to one another to form fused ring(s),
wherein L is a direct bond or a linker;
wherein the first light emitting compound emits a luminescent radiation at room temperature when a voltage is applied across the organic light emitting device; and
wherein the luminescent radiation comprises a delayed fluorescence process.
2. The first device of claim 1 , wherein the first emitting compound is selected from the group consisting of
3. The first device of claim 1 , wherein the emissive layer further comprises a host material.
4. The first device of claim 1 , wherein the first device emits a white light at room temperature when a voltage is applied across the organic light emitting device.
5. The first device of claim 1 , wherein the emissive layer further comprises a first phosphorescent emitting material.
6. The first device of claim 5 , wherein the emissive layer further comprises a second phosphorescent emitting material.
7. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:
an anode;
a cathode; and
an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1:
wherein R f is hydrogen and R a to R e , R g , R 1 and R 2 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein Ar 1 is
wherein Ar 2 and Ar 3 are independently substituted or unsubstituted aryl or heteroaryl, and and Ar 1 , Ar 2 , and Ar 3 are not connected to one another to form fused ring(s),
wherein L is a direct bond or a linker; and
wherein the emissive layer further comprises a first phosphorescent emitting material.
8. The first device of claim 7 , wherein the emissive layer further comprises a second phosphorescent emitting material.
9. The first device of claim 7 , wherein the first device emits a white light at room temperature when a voltage is applied across the organic light emitting device.
10. The first device of claim 7 , wherein the emissive layer further comprises a host material.
11. The first device of claim 7 , wherein the first emitting compound is selected from the group consisting of
12. A consumer product comprising an organic light-emitting device comprising:
an anode;
a cathode; and
an emissive layer, disposed between the anode and the cathode, wherein the emissive layer comprises a first light emitting compound having a structure according to Formula 1:
wherein R f is hydrogen and R a to R e , R g , R 1 and R 2 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein Ar 1 is
wherein Ar 2 and Ar 3 are independently substituted or unsubstituted aryl or heteroaryl, and Ar 1 , Ar 2 , and Ar 3 are not connected to one another to form fused ring(s),
wherein L is a direct bond or a linker; and
wherein at least one of the following is true:
(i) the first light emitting compound emits a luminescent radiation at room temperature when a voltage is applied across the organic light emitting device, and the luminescent radiation comprises a delayed fluorescence process; or
(ii) the emissive layer further comprises a first phosphorescent emitting material.
13. The consumer product of claim 12 , wherein the consumer product is one of a flat panel display, a computer monitor, a medical monitor, a television, a billboard, a light for interior or exterior illumination and/or signaling, a heads-up display, a fully transparent display, a flexible display, a laser printer, a telephone, a mobile phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a 3-D display, a vehicle, a large area wall, theater or stadium screen, and a sign.
14. The consumer product of claim 12 , wherein the first light emitting compound emits a luminescent radiation at room temperature when a voltage is applied across the organic light emitting device, and the luminescent radiation comprises a delayed fluorescence process.
15. The consumer product of claim 12 , wherein the emissive layer further comprises a first phosphorescent emitting material.