Organic electroluminescence element and manufacturing method thereof
View Patent ↗To provide an organic electroluminescence element including a structure that facilitates manufacturing of a large scale organic EL panel and a manufacturing method thereof, the organic electroluminescence element includes: an anode; a cathode; an organic luminescent layer located between the anode and the cathode; and a hole injection layer located between the anode and the organic luminescent layer. The hole injection layer comprises a mixture of molybdenum oxide and tungsten oxide that contains a molybdenum element in a range of 9 atomic percent to 35 atomic percent.
1. An organic electroluminescence element, comprising:
an anode;
a cathode;
an organic luminescent layer located between the anode and the cathode; and
a hole injection layer located between the anode and the organic luminescent layer, the hole injection layer including a mixture of molybdenum oxide and tungsten oxide that contains a molybdenum element in a range of approximately 9 atomic percent to approximately 35 atomic percent.
2. The organic electroluminescence element according to claim 1 ,
wherein the mixture contains the molybdenum element in a range of approximately 9 atomic percent to approximately 12 atomic percent.
3. The organic electroluminescence element according to claim 1 ,
wherein a surface roughness Rmax of the hole injection layer is in a range of approximately 10 nm to approximately 20 nm.
4. The organic electroluminescence element according to claim 1 ,
wherein the organic luminescent layer comprises a polymer organic material.
5. The organic electroluminescence element according to claim 1 ,
wherein the hole injection layer is formed by a sputtering film forming method.
6. The organic electroluminescence element according to claim 5 ,
wherein the hole injection layer is formed by the sputtering film forming method using a sputtering target containing molybdenum and tungsten in an atomic ratio in a range of approximately 65:35 to approximately 20:80.
7. The organic electroluminescence element according to claim 5 ,
wherein the anode is formed by the sputtering film forming method.
8. The organic electroluminescence element according to claim 1 ,
wherein the anode, the organic luminescent layer, and the cathode are stacked on a substrate in order,
the anode contains at least one of Ag and Al, and
the cathode is transparent.
9. A display panel apparatus, comprising the organic electroluminescence element according to claim 1 .
10. A display apparatus, comprising the display panel apparatus according to claim 9 .
11. An electroluminescence illumination source, comprising the organic electroluminescence element according to claim 1 .