Chemical Vapor Deposition of Graphene Films and Transfer Methods

Chemical vapor deposition (CVD) has emerged as the principal technique for synthesising high-quality graphene films over large areas. In a typical process, hydrocarbon gases decompose on the surface of metal catalysts—most commonly copper or nickel—under elevated temperatures, promoting the formation of continuous monolayer or few-layer graphene. The choice of catalyst, reactor design and process parameters governs film uniformity, defect density and grain size, which in turn influence electrical, optical and mechanical properties. Following growth, graphene must be detached from its catalyst and relocated onto application-specific substrates. Transfer methods fall broadly into wet, dry and quasi-dry categories. Wet transfer relies on polymer supports and chemical etchants to separate graphene from metal, but may introduce contaminants and wrinkles. Dry transfer employs mechanical stamps, adhesive tapes or thermal release films to pick up and deposit graphene without liquid chemicals, enhancing cleanliness and throughput. Quasi-dry approaches combine solvent-less delamination with controlled adhesion or electrostatic release. Advances in support materials, adhesive force tuning and wafer-bonding strategies have improved transfer yields, reduced polymer residue and enabled deterministic stacking of van der Waals heterostructures. These developments are accelerating the integration of CVD graphene into transparent conductive films, flexible electronics, photonic devices and high-performance sensors, underlining its global significance and application potential.

Research from Nature Portfolio

Functional adhesive tapes with ultraviolet-tunable bonding strength have been introduced to achieve solvent-free transfer of monolayer graphene with over 99 % yield. By modulating adhesion through light exposure, graphene can be peeled from metal catalysts and deposited onto polymers, paper or three-dimensional surfaces with minimal damage and high spatial precision. This method extends to bilayer graphene, transition metal dichalcogenides and stacked heterostructures, enabling site-selective device fabrication without chemical residues.

A flat-to-flat stacking transfer protocol has been developed for wafer-scale graphene and graphene-based superlattices. A two-step spinning-assisted dehydration removes interfacial water, followed by proton-assisted surface cleaning and doping neutralisation. Twist angles between layers are controlled by aligning wafer flats, yielding centimetre-scale films with uniform morphology, low defect density and consistent electrical performance—evidenced by room-temperature quantum Hall effects across large line widths.

A wafer-bonding approach tailored for semiconductor manufacturing lines has demonstrated large-area integration of CVD graphene and other two-dimensional crystals onto 100 mm silicon wafers. Using adhesive bonding processes common in back-end-of-the-line fabrication, graphene can be transferred without manual handling. This technique supports heterostructure assembly with hexagonal boron nitride and molybdenum disulfide and yields field-effect devices with carrier mobilities exceeding 4 500 cm² V⁻¹ s⁻¹.

Chemical Vapor Deposition of Graphene Films and Transfer Methods publication trend

The graph below shows the total number of articles in chemical vapor deposition of graphene films and transfer methods across all publications each year (not limited to Nature Index journals).

Technical terms

Chemical Vapor Deposition: A process in which gaseous precursors react or decompose on a heated substrate to produce a thin film.

Monolayer Graphene: A single atomic layer of carbon atoms arranged in a hexagonal lattice.

Wet Transfer: A technique that uses liquid solvents and polymer supports to detach and transfer graphene films.

Dry Transfer: A method that avoids liquid chemicals, employing mechanical stamps or adhesives to pick up and place graphene.

Van der Waals Heterostructure: A stacked assembly of two-dimensional materials bound by weak intermolecular forces.

Carrier Mobility: A measure of how quickly charge carriers move through a material under an electric field.

Support Layer: A polymer or film applied to graphene during transfer to maintain structural integrity.

References

1. Ready-to-transfer two-dimensional materials using tunable adhesive force tapes. Nature Electronics (2024).
2. Chemical vapor deposition-grown graphene transparent conducting electrode for organic photovoltaics: Advances towards scalable transfer-free synthesis. Renewable and Sustainable Energy Reviews (2024).
3. Stacking transfer of wafer-scale graphene-based van der Waals superlattices. Nature Communications (2023).
4. Transfer of 2D Films: From Imperfection to Perfection. ACS Nano (2024).
5. Ice‐Enabled Transfer of Graphene on Copper Substrates Enhanced by Electric Field and Cu2O. Advanced Science (2024).
6. Large-area integration of two-dimensional materials and their heterostructures by wafer bonding. Nature Communications (2021).