Anode for an organic electronic device
View Patent ↗There is provided an anode for an organic electronic device. The anode is a conducting inorganic material having an oxidized surface layer. The surface layer is non-conductive and hole-transporting.
1. A process for forming an organic electronic device, comprising:
providing a TFT substrate having an inorganic surface layer;
forming a patterned anode on the TFT surface;
treating the anode with an oxygen plasma with a sufficient power density and for a sufficient time to form a non-conductive, hole-transport surface layer on the anode;
forming at least one organic active layer on the non-conductive, hole-transport surface layer by a liquid deposition technique;
applying a cathode to the at least one organic active layer.
2. The process of claim 1 , wherein the plasma consists essentially of argon and oxygen with a volume ratio in the range of 9:1 to 0:10.
3. The process of claim 1 , wherein the power density is in the range of 0.25 to 1.0 W/cm 2 , and the treating time is at least 10 minutes.
4. The process of claim 1 , wherein the power density is greater than 10 W/cm 2 .