Patent
US 9,908,779Apparatus and Method for Treating Graphene Using Plasma and Application Thereof
I-Chun CHENG
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,908,779Patent drawings and their descriptions. Click a drawing to enlarge it.
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 for manufacturing a reduced g raphene oxide (rGO) film, comprising steps o f: providing a substrate; distributing a reduced g raphene oxide (rGO) slu rr y having a solvent on the substrate; evaporating the solvent in the GO slurry to form a reduced graphene oxide (rGO)- containing recursor film on the substrate; and treating the reduced graphene oxide (rGO)- containing precursor film on the substrate with an atmospheric pressure plasma jet (APPJ) to form the GO film, wherein the treating step is kept up for a period of not more than hirteen seconds once the substrate temperature reaches 450 °C. Currently amended
The method as claimed in Claim 1, wherein the substrate is electrically conductive. Original
The method as claimed in Claim 1, wherein the GO film forms an electrode on the substrate. Currently amended
The method as claimed in Claim 1, wherein the treating step is stopped when the GO)-containing recursor film becomes the GO film, the GO film Page 2 of 16 Currently amended
The method as claimed in Claim 1, wherein the rG O slurry has a solvent, an adhesive dissolved in the solvent and reduced graphene oxides (rGOs) dispersed in the solvent, the solvent is one selected from the group consisting of water, a-terpineol, 3 -terpineol, x- terpineol, 8 -terpineol, methanol, ethanol, isopropanol, acetone, and any combination thereof, and the adhesive is one selected from the group consisting of a cellulose ester derivative, a cellulose ether derivative, polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and any combination thereof. Currently amended
Canceled
A three-dimensional porous reduced g raphene oxide (rG O) film coated on a substrate, comprising plural reduced graphene oxide (rG O) sheets; and flaky structures connected to and protruded from at least one of the plural rG O sheets, wherein: each of the flaky structures has a bottom portion and an upper portion connected thereto; the bottom portion is directly in contact with the at least one of the plural rG O sheets; and plural rG O sheets. Currently amended
The hree-dimensional porous rG O film as claimed in Claim 8, further comprising cracks contained in the upper portio. Currently amended
Canceled
The hree-dimensional porous rG O film as claimed in Claim -98, wherein the flaky structures include surfaces havin g e edges, and a linear distance between two pro j ection points ertically projected from any two different points lying on any one of the edges onto a surface of the substrate is not longer than 1 0_ pm. Currently amended
SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.1223.2799.1243.2833.svg 0.113 0.067 Chemistry Black and white SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.989.2810.1011.2842.svg 0.107 0.073 Chemistry Black and white Claim 12: The hree-dimensional porous rGO film as claimed in Claim 810, further comprising cracks contained in the bottom po rtion, and g aps lyin g between any two ad j acent rG O sheets of the plurality of rG O sheets. Page 4 of 16 Currently amended
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials2 process steps
Reduced graphene oxide (60 mg) is mixed with 2 mL of viscous solution containing alpha-terpineol solvent and ethyl cellulose adhesive (10 wt%) to form rGO slurry. The slurry is screen-printed on a cleaned FTO conductive glass substrate, then soft-baked at 100°C for 5 minutes. The FTO substrate is placed on a movable carrier and slowly moved under an APPJ (N₂ flow rate 30 slm, operating voltage 275 V, duty cycle 7/33 microseconds, substrate-to-nozzle distance 2 cm, quartz tube opening radius 1.7 cm). Once the substrate reaches 450°C, the APPJ treatment is applied for durations of 1, 5, 9, 11, 13, or 17 seconds. The resulting graphene film serves as a counter electrode in DSSCs. Photoelectric performance (Voc, Jsc, FF, efficiency) is measured and compared with untreated and furnace-calcined (450°C, 15 min) control electrodes.
Layer stacks claimed or described, ordered top of device to substrate.
rGO counter electrode
three-dimensional porous rGO film on substrate
Materials described outside the worked examples.
solvent (water, terpineol, methanol, ethanol, isopropanol, acetone, or combination)
cellulose ester/ether derivative, PEG, or PVP adhesive
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
DSSC efficiency without further heating treatment | 0.19 % | reduced graphene oxide (rGO) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,908,779Patent drawings and their descriptions. Click a drawing to enlarge it.
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 for manufacturing a reduced g raphene oxide (rGO) film, comprising steps o f: providing a substrate; distributing a reduced g raphene oxide (rGO) slu rr y having a solvent on the substrate; evaporating the solvent in the GO slurry to form a reduced graphene oxide (rGO)- containing recursor film on the substrate; and treating the reduced graphene oxide (rGO)- containing precursor film on the substrate with an atmospheric pressure plasma jet (APPJ) to form the GO film, wherein the treating step is kept up for a period of not more than hirteen seconds once the substrate temperature reaches 450 °C. Currently amended
The method as claimed in Claim 1, wherein the substrate is electrically conductive. Original
The method as claimed in Claim 1, wherein the GO film forms an electrode on the substrate. Currently amended
The method as claimed in Claim 1, wherein the treating step is stopped when the GO)-containing recursor film becomes the GO film, the GO film Page 2 of 16 Currently amended
The method as claimed in Claim 1, wherein the rG O slurry has a solvent, an adhesive dissolved in the solvent and reduced graphene oxides (rGOs) dispersed in the solvent, the solvent is one selected from the group consisting of water, a-terpineol, 3 -terpineol, x- terpineol, 8 -terpineol, methanol, ethanol, isopropanol, acetone, and any combination thereof, and the adhesive is one selected from the group consisting of a cellulose ester derivative, a cellulose ether derivative, polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and any combination thereof. Currently amended
Canceled
A three-dimensional porous reduced g raphene oxide (rG O) film coated on a substrate, comprising plural reduced graphene oxide (rG O) sheets; and flaky structures connected to and protruded from at least one of the plural rG O sheets, wherein: each of the flaky structures has a bottom portion and an upper portion connected thereto; the bottom portion is directly in contact with the at least one of the plural rG O sheets; and plural rG O sheets. Currently amended
The hree-dimensional porous rG O film as claimed in Claim 8, further comprising cracks contained in the upper portio. Currently amended
Canceled
The hree-dimensional porous rG O film as claimed in Claim -98, wherein the flaky structures include surfaces havin g e edges, and a linear distance between two pro j ection points ertically projected from any two different points lying on any one of the edges onto a surface of the substrate is not longer than 1 0_ pm. Currently amended
SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.1223.2799.1243.2833.svg 0.113 0.067 Chemistry Black and white SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.989.2810.1011.2842.svg 0.107 0.073 Chemistry Black and white Claim 12: The hree-dimensional porous rGO film as claimed in Claim 810, further comprising cracks contained in the bottom po rtion, and g aps lyin g between any two ad j acent rG O sheets of the plurality of rG O sheets. Page 4 of 16 Currently amended
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials2 process steps
Reduced graphene oxide (60 mg) is mixed with 2 mL of viscous solution containing alpha-terpineol solvent and ethyl cellulose adhesive (10 wt%) to form rGO slurry. The slurry is screen-printed on a cleaned FTO conductive glass substrate, then soft-baked at 100°C for 5 minutes. The FTO substrate is placed on a movable carrier and slowly moved under an APPJ (N₂ flow rate 30 slm, operating voltage 275 V, duty cycle 7/33 microseconds, substrate-to-nozzle distance 2 cm, quartz tube opening radius 1.7 cm). Once the substrate reaches 450°C, the APPJ treatment is applied for durations of 1, 5, 9, 11, 13, or 17 seconds. The resulting graphene film serves as a counter electrode in DSSCs. Photoelectric performance (Voc, Jsc, FF, efficiency) is measured and compared with untreated and furnace-calcined (450°C, 15 min) control electrodes.
Layer stacks claimed or described, ordered top of device to substrate.
rGO counter electrode
three-dimensional porous rGO film on substrate
Materials described outside the worked examples.
solvent (water, terpineol, methanol, ethanol, isopropanol, acetone, or combination)
cellulose ester/ether derivative, PEG, or PVP adhesive
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
DSSC efficiency without further heating treatment | 0.19 % | reduced graphene oxide (rGO) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,908,779Patent drawings and their descriptions. Click a drawing to enlarge it.
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 for manufacturing a reduced g raphene oxide (rGO) film, comprising steps o f: providing a substrate; distributing a reduced g raphene oxide (rGO) slu rr y having a solvent on the substrate; evaporating the solvent in the GO slurry to form a reduced graphene oxide (rGO)- containing recursor film on the substrate; and treating the reduced graphene oxide (rGO)- containing precursor film on the substrate with an atmospheric pressure plasma jet (APPJ) to form the GO film, wherein the treating step is kept up for a period of not more than hirteen seconds once the substrate temperature reaches 450 °C. Currently amended
The method as claimed in Claim 1, wherein the substrate is electrically conductive. Original
The method as claimed in Claim 1, wherein the GO film forms an electrode on the substrate. Currently amended
The method as claimed in Claim 1, wherein the treating step is stopped when the GO)-containing recursor film becomes the GO film, the GO film Page 2 of 16 Currently amended
The method as claimed in Claim 1, wherein the rG O slurry has a solvent, an adhesive dissolved in the solvent and reduced graphene oxides (rGOs) dispersed in the solvent, the solvent is one selected from the group consisting of water, a-terpineol, 3 -terpineol, x- terpineol, 8 -terpineol, methanol, ethanol, isopropanol, acetone, and any combination thereof, and the adhesive is one selected from the group consisting of a cellulose ester derivative, a cellulose ether derivative, polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and any combination thereof. Currently amended
Canceled
A three-dimensional porous reduced g raphene oxide (rG O) film coated on a substrate, comprising plural reduced graphene oxide (rG O) sheets; and flaky structures connected to and protruded from at least one of the plural rG O sheets, wherein: each of the flaky structures has a bottom portion and an upper portion connected thereto; the bottom portion is directly in contact with the at least one of the plural rG O sheets; and plural rG O sheets. Currently amended
The hree-dimensional porous rG O film as claimed in Claim 8, further comprising cracks contained in the upper portio. Currently amended
Canceled
The hree-dimensional porous rG O film as claimed in Claim -98, wherein the flaky structures include surfaces havin g e edges, and a linear distance between two pro j ection points ertically projected from any two different points lying on any one of the edges onto a surface of the substrate is not longer than 1 0_ pm. Currently amended
SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.1223.2799.1243.2833.svg 0.113 0.067 Chemistry Black and white SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.989.2810.1011.2842.svg 0.107 0.073 Chemistry Black and white Claim 12: The hree-dimensional porous rGO film as claimed in Claim 810, further comprising cracks contained in the bottom po rtion, and g aps lyin g between any two ad j acent rG O sheets of the plurality of rG O sheets. Page 4 of 16 Currently amended
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials2 process steps
Reduced graphene oxide (60 mg) is mixed with 2 mL of viscous solution containing alpha-terpineol solvent and ethyl cellulose adhesive (10 wt%) to form rGO slurry. The slurry is screen-printed on a cleaned FTO conductive glass substrate, then soft-baked at 100°C for 5 minutes. The FTO substrate is placed on a movable carrier and slowly moved under an APPJ (N₂ flow rate 30 slm, operating voltage 275 V, duty cycle 7/33 microseconds, substrate-to-nozzle distance 2 cm, quartz tube opening radius 1.7 cm). Once the substrate reaches 450°C, the APPJ treatment is applied for durations of 1, 5, 9, 11, 13, or 17 seconds. The resulting graphene film serves as a counter electrode in DSSCs. Photoelectric performance (Voc, Jsc, FF, efficiency) is measured and compared with untreated and furnace-calcined (450°C, 15 min) control electrodes.
Layer stacks claimed or described, ordered top of device to substrate.
rGO counter electrode
three-dimensional porous rGO film on substrate
Materials described outside the worked examples.
solvent (water, terpineol, methanol, ethanol, isopropanol, acetone, or combination)
cellulose ester/ether derivative, PEG, or PVP adhesive
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
DSSC efficiency without further heating treatment | 0.19 % | reduced graphene oxide (rGO) |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,908,779Patent drawings and their descriptions. Click a drawing to enlarge it.
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 for manufacturing a reduced g raphene oxide (rGO) film, comprising steps o f: providing a substrate; distributing a reduced g raphene oxide (rGO) slu rr y having a solvent on the substrate; evaporating the solvent in the GO slurry to form a reduced graphene oxide (rGO)- containing recursor film on the substrate; and treating the reduced graphene oxide (rGO)- containing precursor film on the substrate with an atmospheric pressure plasma jet (APPJ) to form the GO film, wherein the treating step is kept up for a period of not more than hirteen seconds once the substrate temperature reaches 450 °C. Currently amended
The method as claimed in Claim 1, wherein the substrate is electrically conductive. Original
The method as claimed in Claim 1, wherein the GO film forms an electrode on the substrate. Currently amended
The method as claimed in Claim 1, wherein the treating step is stopped when the GO)-containing recursor film becomes the GO film, the GO film Page 2 of 16 Currently amended
The method as claimed in Claim 1, wherein the rG O slurry has a solvent, an adhesive dissolved in the solvent and reduced graphene oxides (rGOs) dispersed in the solvent, the solvent is one selected from the group consisting of water, a-terpineol, 3 -terpineol, x- terpineol, 8 -terpineol, methanol, ethanol, isopropanol, acetone, and any combination thereof, and the adhesive is one selected from the group consisting of a cellulose ester derivative, a cellulose ether derivative, polyethylene glycol (PEG), polyvinylpyrrolidone (PVP) and any combination thereof. Currently amended
Canceled
A three-dimensional porous reduced g raphene oxide (rG O) film coated on a substrate, comprising plural reduced graphene oxide (rG O) sheets; and flaky structures connected to and protruded from at least one of the plural rG O sheets, wherein: each of the flaky structures has a bottom portion and an upper portion connected thereto; the bottom portion is directly in contact with the at least one of the plural rG O sheets; and plural rG O sheets. Currently amended
The hree-dimensional porous rG O film as claimed in Claim 8, further comprising cracks contained in the upper portio. Currently amended
Canceled
The hree-dimensional porous rG O film as claimed in Claim -98, wherein the flaky structures include surfaces havin g e edges, and a linear distance between two pro j ection points ertically projected from any two different points lying on any one of the edges onto a surface of the substrate is not longer than 1 0_ pm. Currently amended
SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.1223.2799.1243.2833.svg 0.113 0.067 Chemistry Black and white SVG 14701471.10-02-2017.J₈AA₀N₉₇RXEAPX2.CLM.3.29.989.2810.1011.2842.svg 0.107 0.073 Chemistry Black and white Claim 12: The hree-dimensional porous rGO film as claimed in Claim 810, further comprising cracks contained in the bottom po rtion, and g aps lyin g between any two ad j acent rG O sheets of the plurality of rG O sheets. Page 4 of 16 Currently amended
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
4 materials2 process steps
Reduced graphene oxide (60 mg) is mixed with 2 mL of viscous solution containing alpha-terpineol solvent and ethyl cellulose adhesive (10 wt%) to form rGO slurry. The slurry is screen-printed on a cleaned FTO conductive glass substrate, then soft-baked at 100°C for 5 minutes. The FTO substrate is placed on a movable carrier and slowly moved under an APPJ (N₂ flow rate 30 slm, operating voltage 275 V, duty cycle 7/33 microseconds, substrate-to-nozzle distance 2 cm, quartz tube opening radius 1.7 cm). Once the substrate reaches 450°C, the APPJ treatment is applied for durations of 1, 5, 9, 11, 13, or 17 seconds. The resulting graphene film serves as a counter electrode in DSSCs. Photoelectric performance (Voc, Jsc, FF, efficiency) is measured and compared with untreated and furnace-calcined (450°C, 15 min) control electrodes.
Layer stacks claimed or described, ordered top of device to substrate.
rGO counter electrode
three-dimensional porous rGO film on substrate
Materials described outside the worked examples.
solvent (water, terpineol, methanol, ethanol, isopropanol, acetone, or combination)
cellulose ester/ether derivative, PEG, or PVP adhesive
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
DSSC efficiency without further heating treatment | 0.19 % | reduced graphene oxide (rGO) |
Related documents with shared materials, methods, properties, or citations.
ethyl cellulose
three-dimensional porous rGO film
DSSC efficiency with furnace calcination at 450°C for 15 min |
| 5.19 % |
reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 1 sec | 1.14 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 5 sec | 4.28 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 9 sec | 4.6 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 11 sec | 5.19 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 13 sec | 4.48 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 17 sec | 3.01 % | reduced graphene oxide (rGO) |
Pressure | 0.05–3800 Torr | — |
GRAPHENE DISPLAY DEVICES AND THE DISPLAY DRIVING METHODS THEREOF
ethyl cellulose
three-dimensional porous rGO film
DSSC efficiency with furnace calcination at 450°C for 15 min |
| 5.19 % |
reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 1 sec | 1.14 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 5 sec | 4.28 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 9 sec | 4.6 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 11 sec | 5.19 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 13 sec | 4.48 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 17 sec | 3.01 % | reduced graphene oxide (rGO) |
Pressure | 0.05–3800 Torr | — |
GRAPHENE DISPLAY DEVICES AND THE DISPLAY DRIVING METHODS THEREOF
ethyl cellulose
three-dimensional porous rGO film
DSSC efficiency with furnace calcination at 450°C for 15 min |
| 5.19 % |
reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 1 sec | 1.14 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 5 sec | 4.28 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 9 sec | 4.6 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 11 sec | 5.19 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 13 sec | 4.48 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 17 sec | 3.01 % | reduced graphene oxide (rGO) |
Pressure | 0.05–3800 Torr | — |
GRAPHENE DISPLAY DEVICES AND THE DISPLAY DRIVING METHODS THEREOF
ethyl cellulose
three-dimensional porous rGO film
DSSC efficiency with furnace calcination at 450°C for 15 min |
| 5.19 % |
reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 1 sec | 1.14 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 5 sec | 4.28 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 9 sec | 4.6 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 11 sec | 5.19 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 13 sec | 4.48 % | reduced graphene oxide (rGO) |
DSSC efficiency with APPJ-treated rGO electrode for 17 sec | 3.01 % | reduced graphene oxide (rGO) |
Pressure | 0.05–3800 Torr | — |