OLED stability via doped hole transport layer
First Claim
Patent Images
1. An organic light emitting device, comprising:
- (a) an anode(b) a cathode(c) a first organic layer disposed between the anode and the cathode, the first organic layer being an emissive layer comprising a first organic emitting material;
(d) a second organic layer disposed between the anode and the first organic layer and in direct contact with the first organic layer, the second organic layer being a non-emissive layer, the second organic layer comprising;
(i) an organic small molecule hole transport material having a concentration of 50 to 99 wt %;
(ii) an organic small molecule electron transport material having a concentration of 0.1 to 5 wt %;
wherein the concentration of the 0.1 to 5 wt % of the organic small molecule electron transport material occurs at a position in the second organic layer immediately on the anode side of the emissive layer.
1 Assignment
0 Petitions
Accused Products
Abstract
An organic light emitting device is provided. The device includes an anode and a cathode. A first organic layer is disposed between the anode and the cathode. The first organic layer is an emissive layer that includes a first organic emitting material. The device also includes a second organic layer disposed between the anode and the first organic layer. The second organic layer is a non-emissive layer. The second organic layer includes an organic small molecule hole transport material having a concentration of 50 to 99 wt %, and an organic small molecule electron transport material having a concentration of 0.1 to 5 wt %. Other materials may be present.
42 Citations
18 Claims
-
1. An organic light emitting device, comprising:
-
(a) an anode (b) a cathode (c) a first organic layer disposed between the anode and the cathode, the first organic layer being an emissive layer comprising a first organic emitting material; (d) a second organic layer disposed between the anode and the first organic layer and in direct contact with the first organic layer, the second organic layer being a non-emissive layer, the second organic layer comprising; (i) an organic small molecule hole transport material having a concentration of 50 to 99 wt %; (ii) an organic small molecule electron transport material having a concentration of 0.1 to 5 wt %; wherein the concentration of the 0.1 to 5 wt % of the organic small molecule electron transport material occurs at a position in the second organic layer immediately on the anode side of the emissive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification