Patent
US 8,723,024TRANSPARENT ELECTRODE COMPRISING GRAPHENE SHEET, AND DISPLAY AND SOLAR CELL INCLUDING THE ELECTRODE
Jae-Young CHOI
US
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Patent
Atlas literature
Patent
US 8,723,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process of preparing a graphene sheet according to the present invention;
FIG. 2 schematically shows a polymer coated on a catalyst;
FIG. 3 schematically shows a structure of a graphene sheet formed on a catalyst;
FIG. 4 schematically shows a stack of polymers having a hydrophilic part and 5 a hydrophobic part; and
FIG. 5 schematically shows a structure of a dye-sensitized solar cell.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A transparent electrode comprising: a transparent substrate com prising a glass; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed directly on the transparent substrate, wherein the graphene sheet is synthesized by growth-process, and wherein the growth-process comprises: forming a graphitizing catalyst in the form of a sheet; providing an organic material on a surface of the graphitizing catalyst; and heat-treating the organic material on the graphitizing catalyst in an inert or reductive atmosphere.
The transparent electrode of claim 1, wherein the transparent electrode is flexible.
The transparent electrode of claim 1, wherein the thickness of the graphene sheet is in the range of 0.1 to 100 nm.
The transparent electrode of claim 1, wherein the sheet resistance of the transparent electrode is in the range of 1 to 900 Q/sq., and transmittance of the transparent electrode is in the range of 70 to 99.9 %.
A dye-sensitized solar cell comprising a semiconductor electrode, an electrolyte layer, and an opposite electrode, wherein the semiconductor electrode comprises a transparent electrode and a light absorbance layer which includes a nanoparticle oxide and a dye, and the transparent electrode and the opposite electrode are a transparent electrode according to claim 1.
-2007-0093253 Page 2 of 13 SI-31225-US YPL O 549US App l. No. 12/105,73 8 Response to Final Office Action filed: Reply to Final Office Action of 5. A method of forming a graphene sheet, the method comprising: forming a graphitizing catalyst in the form of a sheet; coating an organic material on the graphitizing catalyst; and heat-treating the resultant in an inert or reductive atmosphere to form the graphene sheet.
A display device comprising a transparent electrode including a graphene sheet formed by the method of claim 5.
An organic light emitting display device comprising: an anode; a hole transport layer; an emission layer; an electron transport layer; and a cathode, wherein the anode is a transparent electrode including a graphene sheet formed by the method of claim 5.
A transparent electrode comprising: a transparent substrate; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed d iree tly-on the transparent substrate, and wherein the gr ap hene sheet has an area equal to or greater than 1 mm x 1 mm the tr ans mit tan c e of the t r anspa fe nt ele ctroe de is in the r ange of 70 to 99.9
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
organic light emitting display device
Materials described outside the worked examples.
graphene sheet
transparent substrate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of transparent electrode (claimed range) | 70–99.9 % | graphene sheet |
sheet resistance of transparent electrode (claimed range) | 1–900 Ohm/sq |
Patent
Atlas literature
Patent
US 8,723,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process of preparing a graphene sheet according to the present invention;
FIG. 2 schematically shows a polymer coated on a catalyst;
FIG. 3 schematically shows a structure of a graphene sheet formed on a catalyst;
FIG. 4 schematically shows a stack of polymers having a hydrophilic part and 5 a hydrophobic part; and
FIG. 5 schematically shows a structure of a dye-sensitized solar cell.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A transparent electrode comprising: a transparent substrate com prising a glass; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed directly on the transparent substrate, wherein the graphene sheet is synthesized by growth-process, and wherein the growth-process comprises: forming a graphitizing catalyst in the form of a sheet; providing an organic material on a surface of the graphitizing catalyst; and heat-treating the organic material on the graphitizing catalyst in an inert or reductive atmosphere.
The transparent electrode of claim 1, wherein the transparent electrode is flexible.
The transparent electrode of claim 1, wherein the thickness of the graphene sheet is in the range of 0.1 to 100 nm.
The transparent electrode of claim 1, wherein the sheet resistance of the transparent electrode is in the range of 1 to 900 Q/sq., and transmittance of the transparent electrode is in the range of 70 to 99.9 %.
A dye-sensitized solar cell comprising a semiconductor electrode, an electrolyte layer, and an opposite electrode, wherein the semiconductor electrode comprises a transparent electrode and a light absorbance layer which includes a nanoparticle oxide and a dye, and the transparent electrode and the opposite electrode are a transparent electrode according to claim 1.
-2007-0093253 Page 2 of 13 SI-31225-US YPL O 549US App l. No. 12/105,73 8 Response to Final Office Action filed: Reply to Final Office Action of 5. A method of forming a graphene sheet, the method comprising: forming a graphitizing catalyst in the form of a sheet; coating an organic material on the graphitizing catalyst; and heat-treating the resultant in an inert or reductive atmosphere to form the graphene sheet.
A display device comprising a transparent electrode including a graphene sheet formed by the method of claim 5.
An organic light emitting display device comprising: an anode; a hole transport layer; an emission layer; an electron transport layer; and a cathode, wherein the anode is a transparent electrode including a graphene sheet formed by the method of claim 5.
A transparent electrode comprising: a transparent substrate; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed d iree tly-on the transparent substrate, and wherein the gr ap hene sheet has an area equal to or greater than 1 mm x 1 mm the tr ans mit tan c e of the t r anspa fe nt ele ctroe de is in the r ange of 70 to 99.9
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
organic light emitting display device
Materials described outside the worked examples.
graphene sheet
transparent substrate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of transparent electrode (claimed range) | 70–99.9 % | graphene sheet |
sheet resistance of transparent electrode (claimed range) | 1–900 Ohm/sq |
Patent
Atlas literature
Patent
US 8,723,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process of preparing a graphene sheet according to the present invention;
FIG. 2 schematically shows a polymer coated on a catalyst;
FIG. 3 schematically shows a structure of a graphene sheet formed on a catalyst;
FIG. 4 schematically shows a stack of polymers having a hydrophilic part and 5 a hydrophobic part; and
FIG. 5 schematically shows a structure of a dye-sensitized solar cell.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A transparent electrode comprising: a transparent substrate com prising a glass; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed directly on the transparent substrate, wherein the graphene sheet is synthesized by growth-process, and wherein the growth-process comprises: forming a graphitizing catalyst in the form of a sheet; providing an organic material on a surface of the graphitizing catalyst; and heat-treating the organic material on the graphitizing catalyst in an inert or reductive atmosphere.
The transparent electrode of claim 1, wherein the transparent electrode is flexible.
The transparent electrode of claim 1, wherein the thickness of the graphene sheet is in the range of 0.1 to 100 nm.
The transparent electrode of claim 1, wherein the sheet resistance of the transparent electrode is in the range of 1 to 900 Q/sq., and transmittance of the transparent electrode is in the range of 70 to 99.9 %.
A dye-sensitized solar cell comprising a semiconductor electrode, an electrolyte layer, and an opposite electrode, wherein the semiconductor electrode comprises a transparent electrode and a light absorbance layer which includes a nanoparticle oxide and a dye, and the transparent electrode and the opposite electrode are a transparent electrode according to claim 1.
-2007-0093253 Page 2 of 13 SI-31225-US YPL O 549US App l. No. 12/105,73 8 Response to Final Office Action filed: Reply to Final Office Action of 5. A method of forming a graphene sheet, the method comprising: forming a graphitizing catalyst in the form of a sheet; coating an organic material on the graphitizing catalyst; and heat-treating the resultant in an inert or reductive atmosphere to form the graphene sheet.
A display device comprising a transparent electrode including a graphene sheet formed by the method of claim 5.
An organic light emitting display device comprising: an anode; a hole transport layer; an emission layer; an electron transport layer; and a cathode, wherein the anode is a transparent electrode including a graphene sheet formed by the method of claim 5.
A transparent electrode comprising: a transparent substrate; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed d iree tly-on the transparent substrate, and wherein the gr ap hene sheet has an area equal to or greater than 1 mm x 1 mm the tr ans mit tan c e of the t r anspa fe nt ele ctroe de is in the r ange of 70 to 99.9
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
organic light emitting display device
Materials described outside the worked examples.
graphene sheet
transparent substrate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of transparent electrode (claimed range) | 70–99.9 % | graphene sheet |
sheet resistance of transparent electrode (claimed range) | 1–900 Ohm/sq |
Patent
Atlas literature
Patent
US 8,723,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 schematically shows a process of preparing a graphene sheet according to the present invention;
FIG. 2 schematically shows a polymer coated on a catalyst;
FIG. 3 schematically shows a structure of a graphene sheet formed on a catalyst;
FIG. 4 schematically shows a stack of polymers having a hydrophilic part and 5 a hydrophobic part; and
FIG. 5 schematically shows a structure of a dye-sensitized solar cell.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A transparent electrode comprising: a transparent substrate com prising a glass; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed directly on the transparent substrate, wherein the graphene sheet is synthesized by growth-process, and wherein the growth-process comprises: forming a graphitizing catalyst in the form of a sheet; providing an organic material on a surface of the graphitizing catalyst; and heat-treating the organic material on the graphitizing catalyst in an inert or reductive atmosphere.
The transparent electrode of claim 1, wherein the transparent electrode is flexible.
The transparent electrode of claim 1, wherein the thickness of the graphene sheet is in the range of 0.1 to 100 nm.
The transparent electrode of claim 1, wherein the sheet resistance of the transparent electrode is in the range of 1 to 900 Q/sq., and transmittance of the transparent electrode is in the range of 70 to 99.9 %.
A dye-sensitized solar cell comprising a semiconductor electrode, an electrolyte layer, and an opposite electrode, wherein the semiconductor electrode comprises a transparent electrode and a light absorbance layer which includes a nanoparticle oxide and a dye, and the transparent electrode and the opposite electrode are a transparent electrode according to claim 1.
-2007-0093253 Page 2 of 13 SI-31225-US YPL O 549US App l. No. 12/105,73 8 Response to Final Office Action filed: Reply to Final Office Action of 5. A method of forming a graphene sheet, the method comprising: forming a graphitizing catalyst in the form of a sheet; coating an organic material on the graphitizing catalyst; and heat-treating the resultant in an inert or reductive atmosphere to form the graphene sheet.
A display device comprising a transparent electrode including a graphene sheet formed by the method of claim 5.
An organic light emitting display device comprising: an anode; a hole transport layer; an emission layer; an electron transport layer; and a cathode, wherein the anode is a transparent electrode including a graphene sheet formed by the method of claim 5.
A transparent electrode comprising: a transparent substrate; and a transparent conductive film comprising a graphene sheet, wherein the transparent conductive film is disposed d iree tly-on the transparent substrate, and wherein the gr ap hene sheet has an area equal to or greater than 1 mm x 1 mm the tr ans mit tan c e of the t r anspa fe nt ele ctroe de is in the r ange of 70 to 99.9
Layer stacks claimed or described, ordered top of device to substrate.
transparent electrode
organic light emitting display device
Materials described outside the worked examples.
graphene sheet
transparent substrate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of transparent electrode (claimed range) | 70–99.9 % | graphene sheet |
sheet resistance of transparent electrode (claimed range) | 1–900 Ohm/sq |
dye-sensitized solar cell
display device
graphitizing catalyst
organic material
self-assembling organic material
amphiphilic polymer
liquid crystal polymer
conductive polymer
transmittance of transparent electrode (description range) | 60–99.9 % | graphene sheet |
sheet resistance of transparent electrode (description range) | 1–1000 Ohm/sq | graphene sheet |
Thickness | 20000–50000 cm | — |
Thickness | 0.1–20 nm | — |
Thickness | 0.1–10 nm | — |
Duration | 0.1–10 hours | — |
Thickness | 0.1–100 nm | — |
Thickness | 1–15 µm | — |
Thickness | 7–25 nm | — |
Pressure | 0.000001 torr | — |
Thickness | ≤ 0.1 nm | — |
Thickness | ≤ 20 nm | — |
Thickness | ≤ 15 µm | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 10 mm | — |
dye-sensitized solar cell
display device
graphitizing catalyst
organic material
self-assembling organic material
amphiphilic polymer
liquid crystal polymer
conductive polymer
transmittance of transparent electrode (description range) | 60–99.9 % | graphene sheet |
sheet resistance of transparent electrode (description range) | 1–1000 Ohm/sq | graphene sheet |
Thickness | 20000–50000 cm | — |
Thickness | 0.1–20 nm | — |
Thickness | 0.1–10 nm | — |
Duration | 0.1–10 hours | — |
Thickness | 0.1–100 nm | — |
Thickness | 1–15 µm | — |
Thickness | 7–25 nm | — |
Pressure | 0.000001 torr | — |
Thickness | ≤ 0.1 nm | — |
Thickness | ≤ 20 nm | — |
Thickness | ≤ 15 µm | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 10 mm | — |
dye-sensitized solar cell
display device
graphitizing catalyst
organic material
self-assembling organic material
amphiphilic polymer
liquid crystal polymer
conductive polymer
transmittance of transparent electrode (description range) | 60–99.9 % | graphene sheet |
sheet resistance of transparent electrode (description range) | 1–1000 Ohm/sq | graphene sheet |
Thickness | 20000–50000 cm | — |
Thickness | 0.1–20 nm | — |
Thickness | 0.1–10 nm | — |
Duration | 0.1–10 hours | — |
Thickness | 0.1–100 nm | — |
Thickness | 1–15 µm | — |
Thickness | 7–25 nm | — |
Pressure | 0.000001 torr | — |
Thickness | ≤ 0.1 nm | — |
Thickness | ≤ 20 nm | — |
Thickness | ≤ 15 µm | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 10 mm | — |
dye-sensitized solar cell
display device
graphitizing catalyst
organic material
self-assembling organic material
amphiphilic polymer
liquid crystal polymer
conductive polymer
transmittance of transparent electrode (description range) | 60–99.9 % | graphene sheet |
sheet resistance of transparent electrode (description range) | 1–1000 Ohm/sq | graphene sheet |
Thickness | 20000–50000 cm | — |
Thickness | 0.1–20 nm | — |
Thickness | 0.1–10 nm | — |
Duration | 0.1–10 hours | — |
Thickness | 0.1–100 nm | — |
Thickness | 1–15 µm | — |
Thickness | 7–25 nm | — |
Pressure | 0.000001 torr | — |
Thickness | ≤ 0.1 nm | — |
Thickness | ≤ 20 nm | — |
Thickness | ≤ 15 µm | — |
Thickness | ≥ 1 nm | — |
Thickness | ≥ 1 mm | — |
Thickness | ≥ 10 mm | — |