Organic thin film electroluminescent device having a carbon layer between the hole injection layer and the organic thin film layer

An organic thin film EL device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection electrode disposed on one surface of said organic thin film layer;
• and
• a hole injection electrode disposed on another surface of said organic thin film layer, entire of said hole injection electrode being formed of a carbon thin film.

An organic thin film EL (electroluminescent device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection electrode disposed on one surface of said organic thin film layer;
• and
• a hole injection electrode disposed on another surface of said organic thin film layer, said hole injection electrode including a carbon thin film, wherein the thickness of said carbon thin film ranges from 50 to 1,000 angstrom.

An organic thin film EL (electroluminescent) device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection electrode disposed on one surface of said organic thin film layer;
• a carbon thin film disposed on another surface of said organic thin film layer;
• and
• a hole injection electrode formed on the other side of said carbon thin film.

An organic thin film EL (electroluminescent) device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection electrode disposed on one surface of said organic thin film layer;
• a carbon thin film disposed on another surface of said organic thin film layer;
• and
• a hole injection electrode formed on said carbon thin film, wherein said organic thin film layer and said hole injection electrode are joined with said carbon thin film placed therebetween.

An organic thin film EL (electroluminescent) device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection electrode disposed on one surface of said organic thin film layer;
• a carbon thin film disposed on another surface of said organic thin film layer;
• and
• a hole injection electrode formed on said carbon thin film, wherein the thickness of said carbon thin film ranges from 50 to 1,000 angstroms.

An organic thin EL (electroluminescent) device comprising:

• an organic thin film layer that emits light upon an application of an electric field thereto;
• an electron injection layer disposed on one side of said organic thin film layer;
• a hole injection layer disposed on another side of said organic thin film layer;
• and
• a carbon thin film layer disposed between said organic thin film layer and said hole injection layer.