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Fabrication of graphene films with high transparent conducting characteristics.

Ma X, Zhang H - Nanoscale Res Lett (2013)

Bottom Line: It was found that the graphene films present excellent electrical conductivity with high transparency.The conductivity is up to 1,240 S/cm, the sheet resistance is lower than 1 kΩ/sq, and the transparency is well over 85% in the visible wavelength range of 400 to 800 nm, showing that the graphene films have very low resistivity and superior transparency and completely satisfy the need for transparent conductors.PACS: 61.48.+c, 78.67.Pt, 68.37.Hk, 68.65.Ac.

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Affiliation: School of Mathematics and Physics, Suzhou University of Science and Technology, 1# Kerui Road, Suzhou, Jiangsu 215009, China. maxy@mail.usts.edu.cn.

ABSTRACT
We present a study on the transparent conducting characteristics of graphene-based films prepared by means of rapid chemical vapor deposition. The graphene films were grown on quartz slides with a CH4/Ar mixed gas under a constant flow at 950°C and then annealed at 1,000°C. It was found that the graphene films present excellent electrical conductivity with high transparency. The conductivity is up to 1,240 S/cm, the sheet resistance is lower than 1 kΩ/sq, and the transparency is well over 85% in the visible wavelength range of 400 to 800 nm, showing that the graphene films have very low resistivity and superior transparency and completely satisfy the need for transparent conductors. These properties can be used in many applications, such as transparent conductor films for touch panels. PACS: 61.48.+c, 78.67.Pt, 68.37.Hk, 68.65.Ac.

No MeSH data available.


AFM image, section analysis profile, and 3D surface morphology of the deposited graphene film. (a) An AFM image of the graphene film deposited on quartz for 3 min. (b) The section analysis profile of the red line in (a). The yellow horizontal line shows the position of measuring the film thickness. (c) 3D surface morphology of the graphene film.
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Figure 2: AFM image, section analysis profile, and 3D surface morphology of the deposited graphene film. (a) An AFM image of the graphene film deposited on quartz for 3 min. (b) The section analysis profile of the red line in (a). The yellow horizontal line shows the position of measuring the film thickness. (c) 3D surface morphology of the graphene film.

Mentions: Pictures of the obtained graphene films on quartz substrates under different times are shown in Figure 1. We can observe that the color of the quartz slides becomes darker with deposition time; this is because the graphene film becomes thicker with time. Figure 2a shows a typical AFM image of the graphene film deposited for 3 min. The graphene film is large scale, flat, and uniform, and only a few tiny carbon particles are scattered on it. Figure 2b shows the section analysis profile of the red line in Figure 2a. The graphene film is about 3 to 5 nm thick, and the average thickness is about 4 nm, equaling tens of layers of graphene. Figure 2c shows the three-dimensional (3D) surface morphology of the graphene film, showing its surface roughness of about 3 nm.


Fabrication of graphene films with high transparent conducting characteristics.

Ma X, Zhang H - Nanoscale Res Lett (2013)

AFM image, section analysis profile, and 3D surface morphology of the deposited graphene film. (a) An AFM image of the graphene film deposited on quartz for 3 min. (b) The section analysis profile of the red line in (a). The yellow horizontal line shows the position of measuring the film thickness. (c) 3D surface morphology of the graphene film.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4016024&req=5

Figure 2: AFM image, section analysis profile, and 3D surface morphology of the deposited graphene film. (a) An AFM image of the graphene film deposited on quartz for 3 min. (b) The section analysis profile of the red line in (a). The yellow horizontal line shows the position of measuring the film thickness. (c) 3D surface morphology of the graphene film.
Mentions: Pictures of the obtained graphene films on quartz substrates under different times are shown in Figure 1. We can observe that the color of the quartz slides becomes darker with deposition time; this is because the graphene film becomes thicker with time. Figure 2a shows a typical AFM image of the graphene film deposited for 3 min. The graphene film is large scale, flat, and uniform, and only a few tiny carbon particles are scattered on it. Figure 2b shows the section analysis profile of the red line in Figure 2a. The graphene film is about 3 to 5 nm thick, and the average thickness is about 4 nm, equaling tens of layers of graphene. Figure 2c shows the three-dimensional (3D) surface morphology of the graphene film, showing its surface roughness of about 3 nm.

Bottom Line: It was found that the graphene films present excellent electrical conductivity with high transparency.The conductivity is up to 1,240 S/cm, the sheet resistance is lower than 1 kΩ/sq, and the transparency is well over 85% in the visible wavelength range of 400 to 800 nm, showing that the graphene films have very low resistivity and superior transparency and completely satisfy the need for transparent conductors.PACS: 61.48.+c, 78.67.Pt, 68.37.Hk, 68.65.Ac.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Mathematics and Physics, Suzhou University of Science and Technology, 1# Kerui Road, Suzhou, Jiangsu 215009, China. maxy@mail.usts.edu.cn.

ABSTRACT
We present a study on the transparent conducting characteristics of graphene-based films prepared by means of rapid chemical vapor deposition. The graphene films were grown on quartz slides with a CH4/Ar mixed gas under a constant flow at 950°C and then annealed at 1,000°C. It was found that the graphene films present excellent electrical conductivity with high transparency. The conductivity is up to 1,240 S/cm, the sheet resistance is lower than 1 kΩ/sq, and the transparency is well over 85% in the visible wavelength range of 400 to 800 nm, showing that the graphene films have very low resistivity and superior transparency and completely satisfy the need for transparent conductors. These properties can be used in many applications, such as transparent conductor films for touch panels. PACS: 61.48.+c, 78.67.Pt, 68.37.Hk, 68.65.Ac.

No MeSH data available.