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US 2009/0215223 A1Published application
Electroluminescent device
AssigneeCambridge Display Technology Limited
InventorsBrian Tierney, Ilaria Grizzi, Clare Foden, Nalin Patel, Mark Leadbeater
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Abstract
An optical device comprising an anode, a cathode comprising barium, strontium or calcium, and a layer of organic semiconducting material between the anode and the cathode wherein a layer of hole transporting and electron blocking material is located between the anode and the layer of organic semiconducting material.
Claims7
A method of forming an optical device comprising
- providing a substrate comprising an anode;
- depositing a layer of hole transporting and electron blocking material onto the anode;
- depositing a layer of organic semiconducting material over the layer of hole transporting and electron blocking material;
- and
- depositing a cathode comprising barium, strontium or calcium over the layer of organic semiconducting material.
2 more elements
Dependencies are inferred from the claim text.