Highly transparent organic light emitting device employing a non-metallic cathode
AssigneeThe Trustees of Princeton University
InventorsGautam Parthasarathy, Paul Burrows, Stephen R. Forrest
Life of this patent
Estimating the term…
Abstract
Organic light emitting devices are disclosed which include a heterostructure for producing electroluminescence wherein the heterostructure includes a non-metallic cathode. As a representative embodiment of the present invention, the heterostructure for producing electroluminescence includes in order, a non-metallic cathode layer (1), an electron injecting interface layer (6), an electron transporting layer (2), a hole transporting layer (3), and an anode layer (4); wherein the non-metallic cathode layer (1) includes an indium-tin oxide layer in contact with a copper phthalocyanine layer which functions as the electron injecting interface layer (6).
Claims89
An organic light emitting device comprising a heterostructure for producing electroluminescence wherein the heterostructure includes a non-metallic cathode comprising a transparent semi-conducting inorganic material in direct contact with a conductive organic layer, wherein said conductive organic layer comprises a phthalocyanine.
An organic light emitting device comprising a heterostructure for producing electroluminescence wherein the heterostructure includes a non-metallic cathode comprising a transparent semi-conducting inorganic material in direct contact with a conductive organic layer, wherein the heterostructure for producing electroluminescence is further comprised of, in order,
- an anode layer,
- a hole transporting layer,
- an electron transporting layer,
- an electron injecting interface layer, and
- said non-metallic cathode.
An organic light emitting device comprising a heterostructure for producing electroluminescence wherein the heterostructure includes a non-metallic cathode comprising a transparent semi-conducting inorganic material in direct contact with a conductive organic layer, wherein the heterostructure for producing electroluminescence is further comprised of, in order,
- an anode layer;
- a hole transporting layer;
- an electron transporting layer;
- a second electron transporting layer;
- an electron injecting interface layer;
- and
- said non-metallic cathode.
An organic light emitting device comprising a heterostructure for producing electroluminescence wherein the heterostructure includes a non-metallic cathode comprising a transparent semi-conducting inorganic material in direct contact with a conductive organic layer, wherein the heterostructure for producing electroluminescence is further comprised of, in order,
- an anode layer;
- a hole injection enhancement layer;
- a hole transporting layer;
- an electron transporting layer;
- an electron injecting interface layer;
- and
- said non-metallic cathode.
A stacked organic light emitting device comprising:
- a first heterostructure for producing electroluminescence, wherein said first heterostructure includes a non-metallic cathode layer comprising a transparent semi-conducting inorganic material in direct contact with a conductive organic layer;
- and
- a second heterostructure for producing electroluminescence stacked on top of said first heterostructure,
- wherein said transparent semi-conducting inorganic material functions as the anode layer in said second heterostructure.
An organic light emitting device comprising, in order,
- a substrate;
- an anode layer;
- a hole transporting layer;
- a first electron transporting layer;
- a conductive organic layer;
- and
- a non-metallic cathode layer;
- wherein said non-metallic cathode layer comprises a transparent semi-conducting inorganic material and said non-metallic cathode layer is in direct contact with said conductive organic layer.
An organic light emitting device comprising, in order,
- a substrate;
- an anode layer;
- a hole transporting layer;
- a conductive organic layer in direct contact with said hole transporting layer;
- and
- a non-metallic cathode layer,
- wherein said non-metallic cathode layer comprises a transparent semi-conducting inorganic material, and said non-metallic cathode layer is in direct contact with said conductive organic layer.
An organic light emitting device comprising, in order,
- a substrate;
- a non-metallic cathode layer;
- a conductive organic layer in direct contact with said non-metallic cathode layer;
- a first electron transporting layer;
- a hole transporting layer;
- and
- an anode layer;
- wherein said non-metallic cathode layer comprises a transparent semi-conducting inorganic material.
An organic light emitting device comprised of, in order:
- a substrate;
- a non-metallic cathode layer;
- a conductive organic layer in direct contact with said non-metallic cathode layer;
- a first electron transporting layer;
- an emissive layer;
- a hole transporting layer;
- and
- an anode layer;
- wherein said non-metallic cathode layer comprises a transparent semi-conducting inorganic material.
An organic light emitting device comprising, in order,
- a substrate;
- a non-metallic cathode layer;
- a conductive organic layer in direct contact with said non-metallic cathode layer;
- a hole transporting layer in direct contact with said conductive layer;
- and
- an anode layer;
- wherein said non-metallic cathode layer comprises a transparent semi-conducting inorganic material.
A device comprising an organic light emitting device including a transparent, non-metallic, semi-conductive inorganic material comprising indium tin oxide in direct contact with a conductive organic layer, wherein said semi-conductive inorganic material functions as a cathode in said organic light emitting device wherein said conductive organic layer comprises a phthalocyanine.
A stacked organic light emitting device comprising:
- a first organic light emitting device including a transparent, non-metallic, semi-conductive inorganic material in direct contact with a conductive organic layer, wherein said semi-conductive inorganic material functions as a cathode in said first organic light emitting device;
- a second organic light emitting device stacked on top of said first organic light emitting device, wherein said transparent semi-conducting inorganic material comprises an indium tin oxide layer which functions as an anode in said second organic light emitting device.
Dependencies are inferred from the claim text.