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Ultra low field electron emission of graphene exfoliated from carbon cloth
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images of CC. (a) Pristine CC. (b) Exfoliated CC in low magnification. (c) Pristine CC in high magnification. (d) Exfoliated CC at the same magnification.

Image of FIG. 2.
FIG. 2.

(a) SEM image of exfoliated CC in high magnification, (b) AFM image of GS exfoliated from CC. (c) TEM image of exfoliated GS. (d) High resolution TEM image of GS.

Image of FIG. 3.
FIG. 3.

Schematic of the GS exfoliation on CC. (a) CC was woven by carbon fiber. (b) Carbon fibers were consisted of anisotropic graphite layers and amorphous carbon. (c) After chemical oxidation, the graphite layers outside were terminated by functional groups. (d) After heating, GS were exfoliated from outside graphite layers.

Image of FIG. 4.
FIG. 4.

GS deposited on CC by electrophoresis. (a) Low magnification image. (b), (c), and (d) High magnification images.

Image of FIG. 5.
FIG. 5.

Field emission of CC. (a) Field emission current density of pristine CC, GS deposited CC. and exfoliated CC. (b) Corresponding F-N plot. (c) Field emission stability of pristine CC. (d) Field emission stability of exfoliated CC.

Image of FIG. 6.
FIG. 6.

(a) Schematic for luminance observation, (b) vertical view, (c) side view of luminance.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultra low field electron emission of graphene exfoliated from carbon cloth