OF THE INVENTION

Soon-Yong Kwon

Patent

Atlas literature

Patent

US 9,385,281

OF THE INVENTION

Soon-Yong Kwon

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

FIG. 1

FIG. 1 is a top plan view showing a graphene sheet according to one 6 embodiment of the present invention.

FIG. 2

FIG. 2 shows the cross-sectional view of the graphene sheet according to one embodiment of the present invention.

FIG. 3

FIG. 3 is the SEM photograph of a 5 nickel thin ﬁlm deposited according to Example 1.

FIG. 4

FIG. 4 is the SEM photograph of the nickel thin ﬁlm after the heat treatment according to Example 1.

FIG. 5

FIG. 5 is the SEM photograph of the graphene sheet according to Example 1. 10

FIG. 6

FIG. 6 is the optical microscope photograph of the graphene sheet according to Example 1.

FIG. 7

FIG. 7 is the SEM photograph of a graphene sheet according to Example 2.

FIG. 8

FIG. 8 is the optical microscope photograph of the 15 graphene sheet according to Example 2.

FIG. 9

FIG. 9 provides sheet resistance measurement results of a graphene sheet according to Example 3.

FIG. 10

performance graph

FIG. 10 provides a graph showing the average grain size change of a nickel thin ﬁlm depending on heat treatment time under a vacuum and hydrogen 20 atmosphere.

FIG. 11

FIG. 11 is the SEM photograph of the cross section of a PMMA layer on a silicon substrate according to Example 4.

FIG. 12

FIG. 12 is the SEM photograph of a graphene sheet according to Example 4.

FIG. 13

FIG. 13 provides thickness measurements of the graphenes according to Examples 4 to 7.

FIG. 14

FIG. 14 provides light transmission degree measurements of a graphene sheet according to Example b. 5

FIG. 15

FIG. 15 is the cross-sectional view of a conventional graphene sheet.

FIG. 16

FIG. 16 is the optical microscope photograph of a graphene sheet according to Example c.

FIG. 17

FIG. 17 is the SEM photograph of the graphene sheet according to Example c. 10

FIG. 18

FIG. 18 provides Raman mapping data of the graphene according to Example c.

FIG. 19

FIG. 19 is the SEM photograph of the surface of the graphene according to Comparative Example c 1.

FIG. 20

FIG. 20 shows the AFM photograph of the surface of the graphene 15 according to Comparative Example c 1.

FIG. 21

FIG. 21 provides Raman mapping data of graphene according to Comparative Example c2.

Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

1 independent · 11 dependent

1
Independentgraphene sheetgraphene sheet on substrate
A graphene sheet comprising 1 to 20 graphene layers on a substrate, 5 wherein the lowest graphene layer contacting the substrate in the graphene sheet is continually formed without any wrinkles.
1. 2
  Dependent← claim 1graphene sheetgraphene sheet on substrate
  The graphene sheet of claim 1, wherein all the graphene layers in the graphene sheet are continually formed without any wrinkles. 10 3. The graphene sheet of claim 1, wherein the graphene sheet has an area of equal to or more than 1 pt m2.
2. 4
  Dependent← claim 1graphene sheetgraphene sheet on substrate
  The graphene sheet of claim 1, wherein the graphene sheet is 15 directly formed on the substrate.
3. 5
  Dependent← claim 1graphene sheetgraphene sheet on substrate
  The graphene sheet of claim 1, which comprises a graphene lower sheet including 1 to layers and a ridge formed on the lower sheet comprising more graphene layers than the lower sheet, wherein and the ridge 20 has a metal grain boundary shape.
4. 9
  Dependent← claim 1, claim 5graphene sheet
  The graphene sheet of claim 5, wherein the metal has a grain size ranging from 50 nm to 10pm. 10 10. The graphene sheet of claim 1, which has a light transmission degree of equal to or more than 60%.
5. 11
  Dependent← claim 1graphene sheet
  The graphene sheet of claim 1, which has transparency of equal to or more than 80%. 15 1 2. The graphene sheet of claim 1, which has sheet resistance of equal to or less than 2000 0/square. 1 3. The graphene sheet of claim 1, which has sheet resistance of 20 equal to or less than 274 0/square.
6. 14
  Dependent← claim 1graphene sheettransparent electrode
  A transparent electrode comprising the graphene sheet according to claim 1. 10 liquid crystal display, an electronic paper display device, or an optoelectronic SVG 14159521.01-21-2014.HQPC₂DDFPXXIFW3.SPEC.2.svg 3.04 5.87 Black and white device.

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

graphene sheet on substrate

graphene sheetgraphene layer

substratesubstrate

transparent electrode

graphene sheetelectrode

optoelectronic device

cathodecathode

electron_transport_l

Materials

Materials described outside the worked examples.

graphene sheet

Claimed Active Material

indium tin oxide (ITO)

Prior Art Reference Material

Process steps

Additional fabrication and treatment steps described in the patent.

Cvd Growth

Step 1

Temperature

1000°C

Process details

note:graphene grown on metal substrate at ~1000°C; wrinkles form upon cooling to room temperature due to thermal expansion mismatch

method:

Characterization

Measurements and analyses referenced in the patent, with their drawing references.

sem

SEM

FIG. 3 is the SEM photograph of a 5 nickel thin ﬁlm deposited according to Example 1.

Figure references

FIG. 3

sem

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
light transmission degree (claimed minimum)	≥ 60 %	graphene sheet
transparency (claimed minimum)

Why these are connected

Related documents with shared materials, methods, properties, or citations.

OF THE INVENTION | Matter42 Literature