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US 9,431,621 B2Granted
Metal oxide charge transport material doped with organic molecules
AssigneeThe Regents of the University of Michigan
InventorsStephen R. Forrest, Brian E. Lassiter
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Abstract
Doping metal oxide charge transport material with an organic molecule lowers electrical resistance while maintaining transparency and thus is optimal for use as charge transport materials in various organic optoelectronic devices such as organic photovoltaic devices and organic light emitting devices.
Claims34
A transparent metal oxide charge transport material for use in an optoelectronic device, the charge transport material comprising:
- a metal oxide material doped with an organic dopant material, wherein the organic dopant material is selected from the group consisting of acridine orange base (AOB), and chloroboron subphthalocyanine (SubPc),
- wherein the metal oxide material is doped with 1 to 20 vol. % of the organic dopant material, whereby electrical resistivity of the metal oxide material is reduced while maintaining transparency of the metal oxide charge transport material.
An organic photosensitive device comprising:
- a first electrode;
- a second electrode;
- a photoactive region disposed between the first electrode and the second electrode;
- and
- a transparent charge transport layer disposed between the photoactive region and at least one of the first and second electrodes, wherein the charge transport layer comprises a metal oxide material doped with an organic dopant material,
- wherein the organic dopant material is selected from the group consisting of acridine orange base (AOB), and chloroboron subphthalocyanine (SubPc),
- wherein the metal oxide material is doped with 1 to 20 vol. % of the organic dopant material, whereby electrical resistivity of the metal oxide material is reduced while maintaining transparency of the metal oxide charge transport material.
4 more elements
An organic photosensitive device comprising:
- an anode;
- multiple subcells in series, each subcell comprising:
- an electron donor layer, and an electron acceptor layer in contact with the electron donor layer forming a donor-acceptor heterojunction, an electron-hole recombination zone separating the subcells;
- and
- a cathode,
- wherein the electron-hole recombination zone comprises a transparent metal oxide material doped with an organic dopant material, wherein the organic dopant material is selected from the group consisting of acridine orange base (AOB), and chloroboron subphthalocyanine (SubPc),
- wherein the metal oxide material is doped with 1 to 20 vol. % of the organic dopant material, whereby electrical resistivity of the metal oxide material is reduced while maintaining transparency of the metal oxide material.
4 more elements
An organic light emitting device comprising:
- an anode;
- a cathode;
- and
- at least one emissive layer and at least one transparent charge transport layer disposed between the anode and the cathode, wherein the at least one charge transport layer comprises a metal oxide material doped with an organic dopant material, wherein the organic dopant material is selected from the group consisting of acridine orange base (AOB), and chloroboron subphthalocyanine (SubPc),
- wherein the metal oxide material is doped with 1 to 20 vol. % of the organic dopant material, whereby electrical resistivity of the charge transport layer is reduced while maintaining transparency of the charge transport layer.
2 more elements
A stacked organic light emitting device comprising:
- an anode;
- a cathode;
- a plurality of emissive regions disposed between the anode and the cathode;
- and
- a transparent charge generation layer disposed between successive emissive regions, wherein the charge generation layer comprises a metal oxide material doped with an organic dopant material, wherein the organic dopant material is selected from the group consisting of, acridine orange base (AOB), and chloroboron subphthalocyanine (SubPc),
- wherein the metal oxide material is doped with 1 to 20 vol. % of the organic dopant material, whereby electrical resistivity of the charge generation layer is reduced while maintaining transparency of the charge generation layer.
3 more elements
Dependencies are inferred from the claim text.