Organic EL element, method of manufacturing organic EL element, organic EL panel, organic EL display device and electronic apparatus
An organic electroluminescence element includes an anode, an organic light emitting layer disposed on an upper side of the anode, a functional layer which is disposed over the organic light emitting layer, in which a rare earth metal and other material are present mixedly, and in which part of the rare earth metal is oxidized, and a cathode disposed on an upper side of the functional layer. A method of manufacturing an organic electroluminescence element includes forming an anode, forming an organic light emitting layer on an upper side of the anode, forming over the organic light emitting layer a functional layer in which a rare earth metal and other material are present mixedly and part of the rare earth metal is oxidized, and forming a cathode on an upper side of the functional layer.
1. An organic electroluminescence element comprising:
an anode;
an organic light emitting layer disposed on an upper side of the anode;
a functional layer which is disposed over the organic light emitting layer, in which a rare earth metal and other material are present mixedly, and in which part of the rare earth metal is oxidized; and
a cathode disposed on an upper side of the functional layer,
wherein content of the rare earth metal based on a total amount of the fluoride of the metal selected from among the alkali metals and the alkaline earth metals and the rare earth metal is more than 73 wt % and less than 100 wt %.
2. The organic electroluminescence element according to claim 1 ,
wherein the other material is a fluoride of a metal selected from among alkali metals and alkaline earth metals.
3. The organic electroluminescence element according to claim 1 ,
wherein the metal selected from among the alkali metals and the alkaline earth metals is Na, and the rare earth metal is Yb.
4. The organic electroluminescence element according to claim 1 ,
wherein the functional layer is formed in contact with the organic light emitting layer.
5. The organic electroluminescence element according to claim 1 ,
wherein a transparent conductive film including an inorganic oxide is formed in contact with the functional layer, between the functional layer and the cathode.
6. The organic electroluminescence element according to claim 5 ,
wherein the transparent conductive film is an indium tin oxide film or an indium zinc oxide film.
7. The organic electroluminescence element according to claim 5 ,
wherein the anode has a light reflecting property, and the cathode has a semi-transparent property.
8. The organic electroluminescence element according to claim 7 ,
wherein light emitted from the organic light emitting layer includes a first light flux going out directly from the cathode and a second light flux going out from the cathode after being reflected between the anode and the cathode, and a film thickness of the transparent conductive film is set according to a wavelength of a color in which the light is emitted in such a manner that the first light flux and the second light flux resonate.
9. The organic electroluminescence element according to claim 1 ,
wherein an electron transport layer is formed between the functional layer and the cathode.
10. The organic electroluminescence element according to claim 1 ,
wherein the other material is an organic material.
11. The organic electroluminescence element according to claim 1 ,
wherein the other material is an oxide.
12. The organic electroluminescence element according to claim 1 ,
wherein two or more organic light emitting layers are formed between the anode and the cathode, a charge generating layer is formed between the organic light emitting layers, the functional layer is formed in contact with the charge generating layer between at least one of the organic light emitting layers and the charge generating layer, and the charge generating layer includes a metallic oxide.
13. The organic electroluminescence element according to claim 12 ,
wherein the metallic oxide is an oxide of Mo.