Organometallic complex, and light-emitting element and light-emitting device using the same
View Patent ↗It is an object of the present invention to provide a substance capable of emitting phosphorescence. In addition, it is an object of the present invention to provide a light-emitting element that is excellent in chromaticity. One aspect of the present invention is an organometallic complex having a structure represented by a general formula ( 1 ). In the general formula ( 1 ), R 1 to R 4 are each any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group. In addition, R 5 to R 13 are each any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group. An organometallic complex having such a structure can emit phosphorescence with higher emission intensity.
1. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer formed between the pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex having a structure represented by a general formula (1),
wherein each of R 1 to R 4 is any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; each of R 5 to R 13 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group.
2. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer formed between the pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex having a structure represented by a general formula (2),
wherein each of R 20 and R 21 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group.
3. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer formed between the pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (3):
wherein each of R 31 to R 34 is any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; each of R 35 to R 43 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group, and L represents a monoanionic ligand.
4. A light-emitting device according to claim 3 , wherein the L is a ligand represented by any one of structural formulas (5) to (11),
5. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer formed between the pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (4):
wherein each of R 51 and R 52 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group, and L represents a monoanionic ligand.
6. A light-emitting device according to claim 5 , wherein the L is a ligand represented by any one of structural formulas (5) to (11),
7. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer formed between the pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (13):
8. An electronic device comprising:
a light-emitting device in a display portion,
the light-emitting device comprises a light-emitting layer formed between a pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex having a structure represented by a general formula (1),
wherein each of R 1 to R 4 is any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; each of R 5 to R 13 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group.
9. An electronic device comprising:
a light-emitting device in a display portion,
the light-emitting device comprises a light-emitting layer formed between a pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex having a structure represented by a general formula (2),
wherein each of R 20 and R 21 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group.
10. An electronic device comprising:
a light-emitting device in a display portion,
the light-emitting device comprises a light-emitting layer formed between a pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (3),
wherein each of R 31 to R 34 is any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; each of R 35 to R 43 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group, and L represents a monoanionic ligand.
11. An electronic device according to claim 10 , wherein the L is a ligand represented by any one of structural formulas (5) to (11),
12. An electronic device comprising:
a light-emitting device in a display portion,
the light-emitting device comprises a light-emitting layer formed between a pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (4),
wherein each of R 51 and R 52 is any one of hydrogen, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a heterocyclic group, and an electron-withdrawing group, and L represents a monoanionic ligand.
13. An electronic device according to claim 12 , wherein the L is a ligand represented by any one of structural formulas (5) to (11),
14. An electronic device comprising:
a light-emitting device in a display portion,
the light-emitting device comprises a light-emitting layer formed between a pair of electrodes,
wherein the light-emitting layer comprises an organometallic complex represented by a general formula (13),