Organic light-emitting element, organic light-emitting device, and electronic apparatus
View Patent ↗A light-emitting element includes a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode, the light-emitting layer including an inorganic semiconductor material, a first material, and a second material, at least one of the first material and the inorganic semiconductor material having a function emit light.
1. A light-emitting element, comprising:
a first electrode;
a second electrode;
a hole transport layer disposed between the first electrode and the second electrode;
an intermediate layer disposed between the first electrode and the second electrode; and
a light-emitting layer disposed between the hole transport layer and the intermediate layer, the light-emitting layer including an inorganic semiconductor material, a first material, and a second material, at least one of the first material and the inorganic semiconductor material emitting a light.
2. The light-emitting element according to claim 1 , the second material that transports at least one kind of carriers contributing to the light.
3. The light-emitting element according to claim 2 , the first material emitting the light, the inorganic semiconductor material transporting a first carrier, and the second material having a function to transport a second carrier.
4. The light-emitting element according to claim 3 , the first carrier being an electron, and the second carrier being a hole.
5. The light-emitting element according to claim 4 , the inorganic semiconductor material being a metal oxide.
6. The light-emitting element according to claim 5 , the metal oxide including a trivalent element and a pentavalent element.
7. The light-emitting element according to claim 4 , the second material containing at least one acid group as a linking group bonding to the inorganic semiconductor material.
8. The light-emitting element according to claim 7 , the acid group being at least one of —SO 3 H group, —COOH group, and —OP(O)(OH) 2 group.
9. The light-emitting element according to claim 3 , the first material being a metallic complex.
10. The light-emitting element according to claim 1 , the light-emitting layer including a plurality of particles each of which includes the inorganic semiconductor material.
11. The light-emitting element according to claim 10 , an average particle diameter of the plurality of particles being 0.5 to 10 nm.
12. The light-emitting element according to claim 10 , the second material being adsorbed to a surface of each of the plurality of particles, or the second material residing gaps between the plurality of particles.
13. The light-emitting element according to claim 1 , the second material including at least one linking group bonding to the inorganic semiconductor material.
14. The light-emitting element according to claim 1 , a ratio of the inorganic semiconductor material to the second material being 20:80 to 80:20 by weight.
15. The light-emitting element according to claim 1 , a ratio of the inorganic semiconductor material to the first material being 95:5 to 75:25 by weight.
16. The light-emitting element according to claim 1 , the light-emitting layer having an average thickness of 1 to 100 nm.
17. The light-emitting element according to claim 1 , an intermediate layer including a third material being provided between the light-emitting layer and at least one of the first electrode and the second electrode, and the third material being semiconducting or insulating.
18. The light-emitting element according to claim 17 , the intermediate layer having an average thickness of 10 nm or below.
19. A light-emitting device, comprising the light-emitting element according to claim 1 .
20. An electronic apparatus, comprising the light-emitting device according to claim 19 .