Light emitting element, light emitting device, and electronic apparatus
An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.
1. A light emitting element comprising:
a first electrode, that functions as a positive electrode;
a light emitting function layer formed on the first electrode;
a second electrode, that functions as a negative electrode, formed on the light emitting function layer, wherein the second electrode comprises Ag with Ag having an atomic ratio of 75% or more; and
a covering layer comprising Mg that is formed on, and in direct contact with, the second electrode, wherein a thickness of the covering layer is thinner than a thickness of the second electrode,
wherein an electron injection layer is formed on, and in direct contact with, the light emitting function layer, and the electron injection layer comprises lithium.
2. The light emitting element according to claim 1 , wherein the first electrode comprises ITO.
3. The light emitting element according to claim 1 , wherein a light reflection layer is formed below the first electrode and comprises Ag.
4. The light emitting element according to claim 3 , wherein the light reflection layer is in direct contact with the first electrode.
5. The light emitting element according to claim 1 , wherein the electron injection layer comprises Liq.
6. The light emitting element according to claim 1 , wherein the electron injection layer comprises LiF.
7. The light emitting element according to claim 1 , wherein the thickness of the second electrode is approximately 15 nm.
8. The light emitting element according to claim 7 , wherein the second electrode further comprises Mg.
9. The light emitting element according to claim 8 , wherein the covering layer is an adsorption layer.
10. The light emitting element according to claim 1 , wherein the second electrode further comprises a reductive material.
11. The light emitting element according to claim 10 , wherein the reductive material comprises Mg.
12. The light emitting element according to claim 11 , wherein the covering layer is an adsorption layer.
13. The light emitting element according to claim 1 , wherein the covering layer is an adsorption layer.
14. The light emitting element according to claim 13 , wherein the thickness of the adsorption layer is 1 nm or more.
15. The light emitting element according to claim 1 , wherein the second electrode further comprises Mg.
16. The light emitting element according to claim 5 , wherein the covering layer is an adsorption layer.
17. The light emitting element according to claim 1 , wherein the second electrode comprises Ag with an atomic ratio of 90% or more and 98% or less and also comprises Mg.
18. The light emitting element according to claim 17 , wherein the covering layer is an adsorption layer.
19. A light emitting element comprising:
a first electrode, that functions as a positive electrode;
a light emitting function layer formed on the first electrode;
a second electrode, that functions as a negative electrode, formed on the light emitting function layer, wherein the second electrode comprises Ag with Ag having an atomic ratio of 90% or more and 98% or less; and
a covering layer comprising Mg that is formed on, and in direct contact with, the second electrode, wherein a thickness of the covering layer is thinner than a thickness of the second electrode.
20. The light emitting element according to claim 19 , wherein an electron injection layer is formed on, and in direct contact with, the light emitting function layer, and the electron injection layer comprises lithium.
21. The light emitting element according to claim 20 , wherein the electron injection layer comprises Liq.
22. The light emitting element according to claim 20 , wherein the second electrode further comprises Mg.
23. The light emitting element according to claim 22 , wherein the covering layer is an adsorption layer.
24. The light emitting element according to claim 23 , wherein the thickness of the adsorption layer is 1 nm or more.