Transparent electrode for organic electronic devices
First Claim
1. A transparent electrode comprising:
- (a) at least one optically transparent electrically conductive layer; and
(b) at least one optically transparent intermediate layer having a thickness of from about 1 and about 100 angstroms;
wherein said optically transparent electrically conductive layer is in contact with said optically transparent intermediate layer, said optically transparent conductive layer having a conductivity at least 100 Siemens per centimeter (S/cm), said optically transparent intermediate layer being comprised of a material having a bulk electrical conductivity at room temperature of less than about 10−
12 Siemens per centimeter (S/cm), and a band gap of at least 3.5 eV.
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Abstract
Described herein is a transparent electrode comprising at least one optically transparent electrically conductive layer; and at least one optically transparent intermediate layer, wherein said optically transparent conductive layer is in contact with said optically intermediate layer, and wherein said optically transparent conductive layer and said optically transparent intermediate layer together transmit at least 50 percent of incident light having a wavelength in a range between about 200 and about 1200 nanometers, said optically transparent conductive layer having a bulk conductivity at least 100 Siemens per centimeter (S/cm), said optically transparent intermediate layer being comprised of a material having a bulk electrical conductivity at room temperature less than 10−12 Siemens per centimeter and a band gap of 3.5 eV. Described herein are also methods for forming a transparent electrode, and transparent electronic devices comprising at least one transparent electrode.
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Citations
26 Claims
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1. A transparent electrode comprising:
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(a) at least one optically transparent electrically conductive layer; and
(b) at least one optically transparent intermediate layer having a thickness of from about 1 and about 100 angstroms;
wherein said optically transparent electrically conductive layer is in contact with said optically transparent intermediate layer, said optically transparent conductive layer having a conductivity at least 100 Siemens per centimeter (S/cm), said optically transparent intermediate layer being comprised of a material having a bulk electrical conductivity at room temperature of less than about 10−
12 Siemens per centimeter (S/cm), and a band gap of at least 3.5 eV. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A light emitting device comprising:
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(a) at least one optically transparent electrically conductive layer (b) at least one optically transparent intermediate layer having a thickness of from about 1 and about 100 angstroms; and
(c) at least one electro-active organic layer wherein said optically transparent electrically conductive layer is in contact with said optically transparent intermediate layer, said optically transparent conductive layer having a conductivity at least 100 Siemens per centimeter (S/cm), said optically transparent intermediate layer being comprised of a material having a bulk electrical conductivity at room temperature of less than about 10−
12 Siemens per centimeter (S/cm), and a band gap of at least 3.5 eV. - View Dependent Claims (21, 22, 23)
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24. A method for fabricating a transparent electronic device, the method comprising:
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providing a substrate;
disposing a transparent electrically conducting layer having a conductivity at least 100 Siemens per centimeter (S/cm); and
disposing a transparent intermediate layer having a thickness of from about 1 and about 100 angstroms, a bulk electrical conductivity at room temperature of less than about 10−
12 Siemens per centimeter (S/cm), and a band gap of at least 3.5 eV;
wherein the transparent intermediate layer comprises sodium fluoride, calcium oxide, or an amine-substituted polymeric material having a repeat unit as shown in structure (I);
wherein A comprises an aromatic radical, R1 and R2 comprise independently of each other hydrogen atom, C1-C30 aliphatic radicals, C3-C30 cycloaliphatic groups, C3-C30 aromatic radicals, or any combination thereof; and
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p”
comprises an integer from 1 to the maximum number of positions available for substitution on A;
or combinations thereof. - View Dependent Claims (25, 26)
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Specification