Graphene Sheet

What Are Graphene Sheets?

Graphene sheets are continuous films of single-layer or few-layer graphene grown over a large area, most commonly by chemical vapor deposition. In this atomically thin form, graphene combines very high electron mobility, optical transparency above 97 percent per layer, and mechanical strength far beyond conventional films. These properties place graphene sheets among the most capable materials for transparent electrodes and flexible electronics, and their behavior follows directly from the fundamental structure and properties of graphene as a two-dimensional carbon lattice.

How Graphene Sheets Are Made

Most large-area graphene sheets are produced by chemical vapor deposition, where carbon atoms nucleate on a metal catalyst such as copper and assemble into a continuous film. The CVD growth process allows precise control over layer number and uniformity, and the film can then be transferred onto target substrates. For device-oriented work, graphene grown or placed on an insulating support, such as monolayer graphene on a SiO₂/Si substrate, provides a ready platform for characterization and fabrication.

Properties of Graphene Sheets

• Single-layer or few-layer coverage over a large continuous area
• High electron mobility for fast, low-resistance conduction
• Optical transparency above 97 percent per graphene layer
• Low sheet resistance, tunable with layer number and doping
• High mechanical strength and flexibility
• Available on metal growth substrates or transferred to target surfaces

Applications

The combination of transparency and conductivity makes graphene sheets a strong candidate for transparent conductive electrodes, touch panels, and flexible displays, applications explored in detail across the range of graphene sheet film applications. Their electronic quality suits field-effect transistors, photodetectors, and high-frequency devices, while their strength and impermeability support barrier layers, sensors, and nanoelectromechanical systems. As a research material, graphene sheets provide a well-defined platform for studying two-dimensional physics and device concepts.

Research and Documentation

Materials supplied by Nanografi appear in peer-reviewed studies across electronics, energy, and 2D materials research, and the record of publications citing Nanografi materials shows how graphene sheets and films have been characterized and applied. Every product ships with documentation covering layer number, substrate, and sheet resistance.

Frequently Asked Questions

Where can I buy graphene sheets?

You can buy graphene sheets directly from Nanografi. We supply CVD-grown graphene sheets and films with defined layer number, substrate, and sheet resistance, for both research and industrial use, with worldwide shipping.

How are graphene sheets produced?

Most graphene sheets are produced by chemical vapor deposition on a metal catalyst such as copper, forming a continuous film that can then be transferred onto target substrates such as glass, polymer, or SiO₂/Si.

What is the difference between monolayer and few-layer graphene sheets?

Monolayer sheets consist of a single graphene layer with the highest transparency, while few-layer sheets stack several layers for lower sheet resistance at the cost of some transparency. The right choice depends on the balance your device needs.

What are graphene sheets used for?

Common applications include transparent conductive electrodes, touch panels, flexible displays, field-effect transistors, photodetectors, sensors, and barrier layers.

Buy Graphene Sheets at Nanografi

Nanografi supplies graphene sheets with documented layer number, substrate, and sheet resistance, so you can specify the film your device requires. Graphene sheets sit within our broader graphene range and our full catalog of advanced materials, with worldwide shipping and technical support. Browse the listings above to find the right graphene sheet for your work.