Patent
Atlas literature
Patent
US 9,697,931Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view illustrating an electrospray apparatus used in the present invention. In the 8 SUBSTITUTE SPECIFICATION (CLEAN) present invention, …
FIG. 2 is a schematic view illustrating a method of preparing a three-dimensional graphene transparent electrode according to the present invention, and
FIG. 3 illustrates the orientation of graphene during an electrospray process in which (a) represents a movement in a vertical direction, and (b) represents …
FIG. 4 is images of solutions in which (a) graphene oxide and (b) reduced graphene oxide are respectively dispersed in water and dimethylformamide (DMF); [0033]
FIG. 5 illustrates K a X- ray photoelectron spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0034]
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of preparing a large-area, t hree-dimensional graphene transparent electrode, the method comprising: respectively preparing a substrate, a conductive polymer solution, and a graphene solution; spraying the conductive polymer solution and the graphene solution on the substrate by an electrospray process using an electrospray apparatus including a nozzle; and drying, wherein the electrospray apparatus comprises: syringes each including a nozzle, in which the conductive polymer solution and the graphene solution are stored for electrospraying; syringe pumps for supplying the conductive polymer solution and the graphene solution to the syringes; potential generators for forming electric fields between the substrate and the syringes; and a stage for supporting the substrate on which the conductive polymer solution and the graphene solution are deposited.
The method of claim 1, wherein graphene formed on the substrate is arranged perpendicular to the substrate.
The method of claim 1, wherein the substrate comprises one selected form the group consisting of single silicon, p-Si (silicon), alkaline silicate-based glass, alkali-free glass, quartz glass, a silicon substrate, acrylate, polycarbonate, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyamide, and a combination thereof. Page 3 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the conductive polymer solution comprises one selected form the group consisting of polyaniline, polypyrrole, polyacetylene, polythiophene, poly(3,4-ethylenedioxythiophene) (PEDOT), and a combination thereof.
The method of claim 1, wherein a concentration of the conductive polymer solution is in a range of 0.001 g/mL to 1.0 g/mL, and a concentration of the graphene solution is in a range of 0.001 g/mL to 0.1 g/mL.
The method of claim 1, wherein a weight ratio of graphene:conductive polymer is in a range of 1:0.1 to 1:50 during the electrospray process.
The method of claim 1, wherein the conductive polymer solution or the graphene solution uses one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, butanol, ethyl acetate, butyl acetate, diethylene glycol dimethyl ether, diethylene glycol dimethyl ethyl ether, methyl methoxypropionate, ethyl ethoxypropionate (EEP), ethyl lactate, propylene glycol methyl ether acetate (PGMEA), propylene glycol methyl ether, propylene glycol propyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol methyl acetate, diethylene glycol ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP), y-butyrolactone, diethyl ether, ethylene glycol dimethyl ether, diglyme, tetrahydrofuran (T H F), methyl cellosolve, ethyl cellosolve, diethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, dipropylene glycol methyl ether, toluene, xylene, hexane, heptane, octane, and a mixture thereof, as a solvent.
The method of claim 1, wherein the conductive polymer solution or the graphene solution further comprises one additive selected from the group consisting of a dispersant, a surfactant, a plasticizer, a thickener, a diluent, and a combination thereof. Page 4 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the electrospray process of the conductive polymer solution and the graphene solution in a form of a separate or mixed solution is performed by a simultaneous injection, separate injection, or gradient injection process.
The method of claim 1, wherein the nozzle is composed of one to five nozzles and is disposed to be spaced apart from the substrate at a distance of 1 cm to 15 cm.
The method of claim 1, wherei n an electric field applies the electric fields are a voltage of kV to 50 kV during the electrospray process.
The method o f claim 11 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed perpendicular to the substrate.
The method o f claim 13 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed parallel to a direction of gravity.
The method of claim 1, wherein the electrospraying is performed by a roll-to-roll process.
The method of claim 1, wherein the graphene transparent electrode has a transmittance of % or more and a sheet resistance of 1,100 Q/cm 2 or less. Page 5 of 9
canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Preparation of three-dimensional graphene transparent electrode by simultaneous injection. Graphene oxide (GO) was prepared from graphite powder using a modified Hummers and Offeman method. Graphite was oxidized with sulfuric acid, potassium hydroxide, and hydrogen peroxide to yield GO, which was recovered by centrifugation and washed. GO was dispersed in DMF and reduced at 90°C for 24 hours to obtain reduced graphene oxide (RGO) dispersed in DMF. The RGO dispersion remained stable for 4 weeks at room temperature.
Layer stacks claimed or described, ordered top of device to substrate.
large-area three-dimensional graphene transparent electrode
Materials described outside the worked examples.
graphene
conductive polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of graphene transparent electrode | — | — |
sheet resistance of graphene transparent electrode | ≤ 1100 Ω/cm² | — |
Thickness |
Table 1
The results obtained are presented in Table 1 below.
p. 15
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,697,931Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view illustrating an electrospray apparatus used in the present invention. In the 8 SUBSTITUTE SPECIFICATION (CLEAN) present invention, …
FIG. 2 is a schematic view illustrating a method of preparing a three-dimensional graphene transparent electrode according to the present invention, and
FIG. 3 illustrates the orientation of graphene during an electrospray process in which (a) represents a movement in a vertical direction, and (b) represents …
FIG. 4 is images of solutions in which (a) graphene oxide and (b) reduced graphene oxide are respectively dispersed in water and dimethylformamide (DMF); [0033]
FIG. 5 illustrates K a X- ray photoelectron spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0034]
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of preparing a large-area, t hree-dimensional graphene transparent electrode, the method comprising: respectively preparing a substrate, a conductive polymer solution, and a graphene solution; spraying the conductive polymer solution and the graphene solution on the substrate by an electrospray process using an electrospray apparatus including a nozzle; and drying, wherein the electrospray apparatus comprises: syringes each including a nozzle, in which the conductive polymer solution and the graphene solution are stored for electrospraying; syringe pumps for supplying the conductive polymer solution and the graphene solution to the syringes; potential generators for forming electric fields between the substrate and the syringes; and a stage for supporting the substrate on which the conductive polymer solution and the graphene solution are deposited.
The method of claim 1, wherein graphene formed on the substrate is arranged perpendicular to the substrate.
The method of claim 1, wherein the substrate comprises one selected form the group consisting of single silicon, p-Si (silicon), alkaline silicate-based glass, alkali-free glass, quartz glass, a silicon substrate, acrylate, polycarbonate, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyamide, and a combination thereof. Page 3 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the conductive polymer solution comprises one selected form the group consisting of polyaniline, polypyrrole, polyacetylene, polythiophene, poly(3,4-ethylenedioxythiophene) (PEDOT), and a combination thereof.
The method of claim 1, wherein a concentration of the conductive polymer solution is in a range of 0.001 g/mL to 1.0 g/mL, and a concentration of the graphene solution is in a range of 0.001 g/mL to 0.1 g/mL.
The method of claim 1, wherein a weight ratio of graphene:conductive polymer is in a range of 1:0.1 to 1:50 during the electrospray process.
The method of claim 1, wherein the conductive polymer solution or the graphene solution uses one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, butanol, ethyl acetate, butyl acetate, diethylene glycol dimethyl ether, diethylene glycol dimethyl ethyl ether, methyl methoxypropionate, ethyl ethoxypropionate (EEP), ethyl lactate, propylene glycol methyl ether acetate (PGMEA), propylene glycol methyl ether, propylene glycol propyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol methyl acetate, diethylene glycol ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP), y-butyrolactone, diethyl ether, ethylene glycol dimethyl ether, diglyme, tetrahydrofuran (T H F), methyl cellosolve, ethyl cellosolve, diethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, dipropylene glycol methyl ether, toluene, xylene, hexane, heptane, octane, and a mixture thereof, as a solvent.
The method of claim 1, wherein the conductive polymer solution or the graphene solution further comprises one additive selected from the group consisting of a dispersant, a surfactant, a plasticizer, a thickener, a diluent, and a combination thereof. Page 4 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the electrospray process of the conductive polymer solution and the graphene solution in a form of a separate or mixed solution is performed by a simultaneous injection, separate injection, or gradient injection process.
The method of claim 1, wherein the nozzle is composed of one to five nozzles and is disposed to be spaced apart from the substrate at a distance of 1 cm to 15 cm.
The method of claim 1, wherei n an electric field applies the electric fields are a voltage of kV to 50 kV during the electrospray process.
The method o f claim 11 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed perpendicular to the substrate.
The method o f claim 13 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed parallel to a direction of gravity.
The method of claim 1, wherein the electrospraying is performed by a roll-to-roll process.
The method of claim 1, wherein the graphene transparent electrode has a transmittance of % or more and a sheet resistance of 1,100 Q/cm 2 or less. Page 5 of 9
canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Preparation of three-dimensional graphene transparent electrode by simultaneous injection. Graphene oxide (GO) was prepared from graphite powder using a modified Hummers and Offeman method. Graphite was oxidized with sulfuric acid, potassium hydroxide, and hydrogen peroxide to yield GO, which was recovered by centrifugation and washed. GO was dispersed in DMF and reduced at 90°C for 24 hours to obtain reduced graphene oxide (RGO) dispersed in DMF. The RGO dispersion remained stable for 4 weeks at room temperature.
Layer stacks claimed or described, ordered top of device to substrate.
large-area three-dimensional graphene transparent electrode
Materials described outside the worked examples.
graphene
conductive polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of graphene transparent electrode | — | — |
sheet resistance of graphene transparent electrode | ≤ 1100 Ω/cm² | — |
Thickness |
Table 1
The results obtained are presented in Table 1 below.
p. 15
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,697,931Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view illustrating an electrospray apparatus used in the present invention. In the 8 SUBSTITUTE SPECIFICATION (CLEAN) present invention, …
FIG. 2 is a schematic view illustrating a method of preparing a three-dimensional graphene transparent electrode according to the present invention, and
FIG. 3 illustrates the orientation of graphene during an electrospray process in which (a) represents a movement in a vertical direction, and (b) represents …
FIG. 4 is images of solutions in which (a) graphene oxide and (b) reduced graphene oxide are respectively dispersed in water and dimethylformamide (DMF); [0033]
FIG. 5 illustrates K a X- ray photoelectron spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0034]
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of preparing a large-area, t hree-dimensional graphene transparent electrode, the method comprising: respectively preparing a substrate, a conductive polymer solution, and a graphene solution; spraying the conductive polymer solution and the graphene solution on the substrate by an electrospray process using an electrospray apparatus including a nozzle; and drying, wherein the electrospray apparatus comprises: syringes each including a nozzle, in which the conductive polymer solution and the graphene solution are stored for electrospraying; syringe pumps for supplying the conductive polymer solution and the graphene solution to the syringes; potential generators for forming electric fields between the substrate and the syringes; and a stage for supporting the substrate on which the conductive polymer solution and the graphene solution are deposited.
The method of claim 1, wherein graphene formed on the substrate is arranged perpendicular to the substrate.
The method of claim 1, wherein the substrate comprises one selected form the group consisting of single silicon, p-Si (silicon), alkaline silicate-based glass, alkali-free glass, quartz glass, a silicon substrate, acrylate, polycarbonate, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyamide, and a combination thereof. Page 3 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the conductive polymer solution comprises one selected form the group consisting of polyaniline, polypyrrole, polyacetylene, polythiophene, poly(3,4-ethylenedioxythiophene) (PEDOT), and a combination thereof.
The method of claim 1, wherein a concentration of the conductive polymer solution is in a range of 0.001 g/mL to 1.0 g/mL, and a concentration of the graphene solution is in a range of 0.001 g/mL to 0.1 g/mL.
The method of claim 1, wherein a weight ratio of graphene:conductive polymer is in a range of 1:0.1 to 1:50 during the electrospray process.
The method of claim 1, wherein the conductive polymer solution or the graphene solution uses one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, butanol, ethyl acetate, butyl acetate, diethylene glycol dimethyl ether, diethylene glycol dimethyl ethyl ether, methyl methoxypropionate, ethyl ethoxypropionate (EEP), ethyl lactate, propylene glycol methyl ether acetate (PGMEA), propylene glycol methyl ether, propylene glycol propyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol methyl acetate, diethylene glycol ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP), y-butyrolactone, diethyl ether, ethylene glycol dimethyl ether, diglyme, tetrahydrofuran (T H F), methyl cellosolve, ethyl cellosolve, diethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, dipropylene glycol methyl ether, toluene, xylene, hexane, heptane, octane, and a mixture thereof, as a solvent.
The method of claim 1, wherein the conductive polymer solution or the graphene solution further comprises one additive selected from the group consisting of a dispersant, a surfactant, a plasticizer, a thickener, a diluent, and a combination thereof. Page 4 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the electrospray process of the conductive polymer solution and the graphene solution in a form of a separate or mixed solution is performed by a simultaneous injection, separate injection, or gradient injection process.
The method of claim 1, wherein the nozzle is composed of one to five nozzles and is disposed to be spaced apart from the substrate at a distance of 1 cm to 15 cm.
The method of claim 1, wherei n an electric field applies the electric fields are a voltage of kV to 50 kV during the electrospray process.
The method o f claim 11 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed perpendicular to the substrate.
The method o f claim 13 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed parallel to a direction of gravity.
The method of claim 1, wherein the electrospraying is performed by a roll-to-roll process.
The method of claim 1, wherein the graphene transparent electrode has a transmittance of % or more and a sheet resistance of 1,100 Q/cm 2 or less. Page 5 of 9
canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Preparation of three-dimensional graphene transparent electrode by simultaneous injection. Graphene oxide (GO) was prepared from graphite powder using a modified Hummers and Offeman method. Graphite was oxidized with sulfuric acid, potassium hydroxide, and hydrogen peroxide to yield GO, which was recovered by centrifugation and washed. GO was dispersed in DMF and reduced at 90°C for 24 hours to obtain reduced graphene oxide (RGO) dispersed in DMF. The RGO dispersion remained stable for 4 weeks at room temperature.
Layer stacks claimed or described, ordered top of device to substrate.
large-area three-dimensional graphene transparent electrode
Materials described outside the worked examples.
graphene
conductive polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of graphene transparent electrode | — | — |
sheet resistance of graphene transparent electrode | ≤ 1100 Ω/cm² | — |
Thickness |
Table 1
The results obtained are presented in Table 1 below.
p. 15
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,697,931Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic view illustrating an electrospray apparatus used in the present invention. In the 8 SUBSTITUTE SPECIFICATION (CLEAN) present invention, …
FIG. 2 is a schematic view illustrating a method of preparing a three-dimensional graphene transparent electrode according to the present invention, and
FIG. 3 illustrates the orientation of graphene during an electrospray process in which (a) represents a movement in a vertical direction, and (b) represents …
FIG. 4 is images of solutions in which (a) graphene oxide and (b) reduced graphene oxide are respectively dispersed in water and dimethylformamide (DMF); [0033]
FIG. 5 illustrates K a X- ray photoelectron spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0034]
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method of preparing a large-area, t hree-dimensional graphene transparent electrode, the method comprising: respectively preparing a substrate, a conductive polymer solution, and a graphene solution; spraying the conductive polymer solution and the graphene solution on the substrate by an electrospray process using an electrospray apparatus including a nozzle; and drying, wherein the electrospray apparatus comprises: syringes each including a nozzle, in which the conductive polymer solution and the graphene solution are stored for electrospraying; syringe pumps for supplying the conductive polymer solution and the graphene solution to the syringes; potential generators for forming electric fields between the substrate and the syringes; and a stage for supporting the substrate on which the conductive polymer solution and the graphene solution are deposited.
The method of claim 1, wherein graphene formed on the substrate is arranged perpendicular to the substrate.
The method of claim 1, wherein the substrate comprises one selected form the group consisting of single silicon, p-Si (silicon), alkaline silicate-based glass, alkali-free glass, quartz glass, a silicon substrate, acrylate, polycarbonate, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyamide, and a combination thereof. Page 3 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the conductive polymer solution comprises one selected form the group consisting of polyaniline, polypyrrole, polyacetylene, polythiophene, poly(3,4-ethylenedioxythiophene) (PEDOT), and a combination thereof.
The method of claim 1, wherein a concentration of the conductive polymer solution is in a range of 0.001 g/mL to 1.0 g/mL, and a concentration of the graphene solution is in a range of 0.001 g/mL to 0.1 g/mL.
The method of claim 1, wherein a weight ratio of graphene:conductive polymer is in a range of 1:0.1 to 1:50 during the electrospray process.
The method of claim 1, wherein the conductive polymer solution or the graphene solution uses one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, butanol, ethyl acetate, butyl acetate, diethylene glycol dimethyl ether, diethylene glycol dimethyl ethyl ether, methyl methoxypropionate, ethyl ethoxypropionate (EEP), ethyl lactate, propylene glycol methyl ether acetate (PGMEA), propylene glycol methyl ether, propylene glycol propyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol methyl acetate, diethylene glycol ethyl acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP), y-butyrolactone, diethyl ether, ethylene glycol dimethyl ether, diglyme, tetrahydrofuran (T H F), methyl cellosolve, ethyl cellosolve, diethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, dipropylene glycol methyl ether, toluene, xylene, hexane, heptane, octane, and a mixture thereof, as a solvent.
The method of claim 1, wherein the conductive polymer solution or the graphene solution further comprises one additive selected from the group consisting of a dispersant, a surfactant, a plasticizer, a thickener, a diluent, and a combination thereof. Page 4 of 9 Application No. 14/367,486 Attorney Docket No.: WPL0027US Response dated: Reply to Non-Final Office Action of:
The method of claim 1, wherein the electrospray process of the conductive polymer solution and the graphene solution in a form of a separate or mixed solution is performed by a simultaneous injection, separate injection, or gradient injection process.
The method of claim 1, wherein the nozzle is composed of one to five nozzles and is disposed to be spaced apart from the substrate at a distance of 1 cm to 15 cm.
The method of claim 1, wherei n an electric field applies the electric fields are a voltage of kV to 50 kV during the electrospray process.
The method o f claim 11 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed perpendicular to the substrate.
The method o f claim 13 claim 1, wherein the syringe nozzle of the electrospray apparatus is disposed parallel to a direction of gravity.
The method of claim 1, wherein the electrospraying is performed by a roll-to-roll process.
The method of claim 1, wherein the graphene transparent electrode has a transmittance of % or more and a sheet resistance of 1,100 Q/cm 2 or less. Page 5 of 9
canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Preparation of three-dimensional graphene transparent electrode by simultaneous injection. Graphene oxide (GO) was prepared from graphite powder using a modified Hummers and Offeman method. Graphite was oxidized with sulfuric acid, potassium hydroxide, and hydrogen peroxide to yield GO, which was recovered by centrifugation and washed. GO was dispersed in DMF and reduced at 90°C for 24 hours to obtain reduced graphene oxide (RGO) dispersed in DMF. The RGO dispersion remained stable for 4 weeks at room temperature.
Layer stacks claimed or described, ordered top of device to substrate.
large-area three-dimensional graphene transparent electrode
Materials described outside the worked examples.
graphene
conductive polymer
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 6 illustrates Raman spectrums of graphite, graphene oxide, and reduced graphene oxide which are used as raw materials; [0035]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
transmittance of graphene transparent electrode | — | — |
sheet resistance of graphene transparent electrode | ≤ 1100 Ω/cm² | — |
Thickness |
Table 1
The results obtained are presented in Table 1 below.
p. 15
Related documents with shared materials, methods, properties, or citations.
substrate
solvent
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
| 2–3 µm |
| — |
Thickness | 1–15 cm | — |
substrate
solvent
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
| 2–3 µm |
| — |
Thickness | 1–15 cm | — |
substrate
solvent
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
| 2–3 µm |
| — |
Thickness | 1–15 cm | — |
substrate
solvent
FIG. 7 is high-resolution transmission electron microscope (HRTEM) images of reduced graphene oxide prepared; [0036]
FIG. 8 illustrates (a) an image of a substrate, and transmission electron microscope images of (b) a graphene transparent electrode prepared in Example 1, (c) …
FIG. 9 illustrates scanning electron microscope images of a three-dimensional graphene transparent electrode prepared in Example 3, in which (a) represents a …
FIG. 10 illustrates scanning electron microscope images of (a) graphene prepared by spray deposition in Comparative Example 3, and (b) graphene prepared by CVD …
| 2–3 µm |
| — |
Thickness | 1–15 cm | — |
