生產廠商：Graphene Platform (Japan)

產品信息

Properties of single-layer graphene

§  Graphene quality and thickness are confirmed by Raman spectroscopy.

§  Multi-point Raman data are provided with every sample.

§  Graphene layer is continuous with few small multilayer islands and overall coverage exceeding 95%.

§  Sheet resistance is < 1,000 ohm per square.

§  Optical transmission is > 95%.

§  Copper foil thickness: 35 micron.

§  All samples are manufactured in our lab in Japan.

Typical Raman spectrum of a single layer film on Copper Foil

Optical Microscope Image of Single-layer Graphene on Copper foil

Explanation of Raman spectrum

1.    Raman spectroscopy is used to check the presence of a D peak in graphene samples. If a D peak is present, then this can indicate defects in the sample, such as cracks or flaking.

2.    The ratio of the heights of the 2D peak and the G peak indicate the number of graphene layers.
2D>G : Single-layer
2D=G : Double layer
2D<G : more than triple layer

3.    3 measurements for every sample are taken and presented on the same graph.