Polycyclic compound and organic light emitting device using same
The present invention relates to a polycyclic compound which can be employed in various organic layers included in an organic light emitting device and contains R substituted with at least one deuterium (D), and to an organic light emitting device which has a long lifespan by comprising same to significantly improve lifespan characteristics thereof. According to the present invention, an organic light emitting device having a long lifespan can be implemented, and thus can be industrially advantageously used in various lighting and display devices, such as a flat panel display device, a flexible display device, a monochromatic or white flat panel lighting device, a monochromatic or white flexible lighting device, a vehicle display device, and a virtual or augmented reality display device.
1 . A polycyclic compound represented by Formula A-1:
wherein X is selected from B, P═O, and P═S, each Z is independently N or CR, with the proviso that at least one of the moieties Z is CR, Y 1 and Y 2 are each independently selected from NR 1 , CR 2 R 3 , O, S, Se, and Si R 4 R 5 , Y 3 is O or S, A 1 and A 2 are each independently selected from substituted or unsubstituted C 6 -C 50 aromatic hydrocarbon rings and substituted or unsubstituted C 2 -C 50 aromatic heterocyclic rings, R 1 to R 5 are the same as or different from each other and are each independently selected from hydrogen, deuterium (D), substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 3 -C 30 heterocycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 6 -C 30 arylthioxy, substituted or unsubstituted amine, substituted or unsubstituted silyl, nitro, cyano, and halogen, provided that when both Y 1 and Y 2 are NR 1 and at least one of the two groups R 1 is heteroaryl, C 12+ heteroaryl containing O or S as a heteroatom is excluded, with the proviso that each of R 1 to R 5 are optionally bonded to one or more of the rings A 1 and A 2 to form an alicyclic or aromatic monocyclic or polycyclic ring, and the groups R are the same as or different from each other and are each independently selected from hydrogen, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 3 -C 30 heterocycloalkyl, and substituted or unsubstituted C 3 -C 30 mixed aliphatic-aromatic rings, with the proviso that at least one of the groups R is an aryl, heteroaryl or mixed aliphatic-aromatic cyclic group substituted with at least one deuterium (D), the substituents of each of the rings A 1 and A 2 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, R 2 and R 3 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, and R 4 and R 5 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring.
2 . The polycyclic compound according to claim 1 , wherein the degree of deuteration of the compound represented by Formula A-1 is at least 5%.
3 . The polycyclic compound according to claim 1 , wherein R is deuterated C 6 -C 30 aryl.
4 . The polycyclic compound according to claim 1 , wherein the ring A 2 is substituted with substituted or unsubstituted amine.
5 . The polycyclic compound according to claim 4 , wherein the amine is substituted or unsubstituted diarylamine.
6 . The polycyclic compound according to claim 1 , wherein the compound represented by Formula A-1 is selected from the following compounds:
7 . An organic light emitting device comprising a first electrode, a second electrode, and one or more organic layers interposed between the first and second electrodes wherein one of the organic layers comprises the polycyclic compound represented by Formula A-1 according to claim 1 .
8 . The organic light emitting device according to claim 7 , wherein the organic layers comprise an electron injecting layer, an electron transport layer, a hole injecting layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and/or a light emitting layer, at least one of which comprises the polycyclic compound represented by Formula A-1.
9 . The organic light emitting device according to claim 8 , wherein the light emitting layer is composed of a host and the polycyclic compound represented by Formula A-1 as a dopant.
10 . The organic light emitting device according to claim 9 , wherein the host is an anthracene compound represented by Formula B:
wherein R 11 to R 18 are the same as or different from each other and are each independently selected from hydrogen, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 3 -C 30 heterocycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted amine, substituted or unsubstituted silyl, substituted or unsubstituted C 3 -C 30 mixed aliphatic-aromatic cyclic groups, nitro, cyano, and halogen, Ar 1 and Ar 3 are the same as or different from each other and are each independently substituted or unsubstituted C 6 -C 30 arylene, Ar 2 and Ar 4 are the same as or different from each other and are each independently selected from hydrogen, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 3 -C 30 heterocycloalkyl, and substituted or unsubstituted C 3 -C 30 mixed aliphatic-aromatic cyclic groups, D n represents the replacement of hydrogen with deuterium, and n is an integer from 0 to 50.
11 . The organic light emitting device according to claim 10 , wherein the anthracene compound represented by Formula B is selected from the following compounds:
12 . The organic light emitting device according to claim 10 , wherein one or more host compounds other than the anthracene compound represented by Formula B are mixed or stacked.
13 . The organic light emitting device according to claim 9 , wherein one or more dopant compounds other than the polycyclic compound represented by Formula A-1 are mixed or stacked in the light emitting layer.
14 . The organic light emitting device according to claim 8 , wherein one or more of the layers are formed by a deposition or solution process.
15 . The organic light emitting device according to claim 7 , wherein the organic light emitting device is used in a display or lighting system selected from flat panel displays, flexible displays, monochromatic flat panel lighting systems, white flat panel lighting systems, flexible monochromatic lighting systems, flexible white lighting systems, displays for automotive applications, displays for virtual reality, and displays for augmented reality.