Light-emitting element, light-emitting device, and electronic device
First Claim
1. A light-emitting element comprising:
- an anode;
a first layer over and in contact with the anode, the first layer comprising a first organic compound;
an organic compound layer over and in contact with the first layer;
a second layer over and in contact with the organic compound layer, the second layer comprising the first organic compound; and
a cathode over and in contact with the second layer,wherein;
the organic compound layer comprises a light-emitting region and a first region over and in contact with the light-emitting region;
the first region comprises the first organic compound and an electron-trapping substance; and
the light-emitting region comprises the first organic compound and a light-emitting substance.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a light-emitting element with a good carrier balance and manufacturing method thereof which does not require the formation of the heterostructure. The light-emitting element includes an organic compound film containing a first organic compound as the main component (base material) between an anode and a cathode, wherein the organic compound film is provided in contact with the anode and with the cathode. The first organic compound further includes a light-emitting region to which a light-emitting substance is added and includes a hole-transport region to which a hole-trapping substance is added and/or an electron-transport region to which an electron-trapping substance is added. The hole-transport region is located between the light-emitting region and the anode, and the electron-transport region is located between the light-emitting region and the cathode.
-
Citations
22 Claims
-
1. A light-emitting element comprising:
-
an anode; a first layer over and in contact with the anode, the first layer comprising a first organic compound; an organic compound layer over and in contact with the first layer; a second layer over and in contact with the organic compound layer, the second layer comprising the first organic compound; and a cathode over and in contact with the second layer, wherein; the organic compound layer comprises a light-emitting region and a first region over and in contact with the light-emitting region; the first region comprises the first organic compound and an electron-trapping substance; and the light-emitting region comprises the first organic compound and a light-emitting substance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A light-emitting element comprising:
-
an anode; a first layer over and in contact with the anode, the first layer comprising a first organic compound and an electron-donating substance; a second layer over and in contact with the first layer, the second layer comprising the first organic compound and an electron-accepting substance; an organic compound layer over and in contact with the second layer; a third layer over and in contact with the organic compound layer, the third layer comprising the first organic compound; and a cathode over and in contact with the third layer, wherein; the organic compound layer comprises a light-emitting region and a first region over and in contact with the light-emitting region; the first region comprises the first organic compound and an electron-trapping substance; and the light-emitting region comprises the first organic compound and a light-emitting substance. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A light-emitting element comprising:
-
an anode; a first layer over and in contact with the anode, the first layer comprising a first organic compound; an organic compound layer over and in contact with the first layer; a second layer over and in contact with the organic compound layer, the second layer comprising the first organic compound and an electron-donating substance; a third layer over and in contact with the second layer, the third layer comprising the first organic compound and an electron-accepting substance; and a cathode over and in contact with the third layer, wherein; the organic compound layer comprises a light-emitting region and a first region over and in contact with the light-emitting region; the first region comprises the first organic compound and an electron-trapping substance; and the light-emitting region comprises the first organic compound and a light-emitting substance. - View Dependent Claims (17, 18, 19, 20, 21, 22)
-
Specification