Organic light emitting device having cathode including a magnesium-calcium layer and method for fabricating the same
AssigneeSamsung Display Co., Ltd.
InventorsKwan-Hee Lee, Ja-Hyun Im
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Abstract
An organic light emitting device and a method of fabricating the same are disclosed. The organic light emitting device includes an anode and a cathode that comprises a magnesium-calcium layer. An organic layer having at least an organic emission layer is interposed between the anode and the cathode. The organic light emitting device may have reduced driving voltage characteristics, increased luminous efficiency characteristics, and improved lifespan characteristics without forming a separate electron injection layer because of the excellent electron injection characteristics.
Claims17
An organic light emitting device, comprising:
- an anode;
- a magnesium-calcium layer;
- and
- an organic layer interposed between the anode and the magnesium-calcium layer,
- wherein the organic layer comprises at least an organic emission layer, and
- wherein the magnesium-calcium layer comprises magnesium and calcium in an atomic ratio of about 1:1.
An organic light emitting device, comprising:
- an anode;
- a magnesium-calcium layer being about 400 Å or less thick;
- and
- an organic layer interposed between the anode and the magnesium-calcium layer,
- wherein the organic layer comprises at least an organic emission layer, and
- wherein the magnesium-calcium layer comprises magnesium and calcium in an atomic ratio of about 1:1.
Dependencies are inferred from the claim text.