Intro of Roll-to-Roll vacuum sputtering conductive materials (Cu/Al /ITO/ Graphite)

Roll-to-Roll Sputtering is a metallized film process that deposits specific materials such as metal, alloy and graphite on flexible substrates.

It is an efficient, reliable and mass-produced process, which can be used to make various electrode materials and their applications.

Topnano's sputtering conductive materials are based on flexible substrates (such as PET/PI Film) or flexible metal substrates (such as copper foil/aluminum foil) to sputter conductive materials.

























Here are some materials with conductive properties and their characteristics for reference:

1.Copper plating material properties and applications 

Material characteristics	Description
Conductivity	Copper is an excellent conductive material with good electrical conductivity and can provide excellent electrical properties.
Thermal Conductivity	Copper has excellent thermal conductivity, good uniform temperature and vertical thermal conductivity, and can quickly transfer heat energy to the substrate.
Easy adhesion	The copper surface easily adheres to other materials and can be well combined with other materials.
Corrosion resistance	Copper has good corrosion resistance and can work stably in various environments.

*Topnano's sputtered copper layer is smaller than ED electrolytic copper and RA rolled copper in terms of copper crystal particles, capillary pores and surface roughness (Rq). It has a finer grain distribution range and the material surface is smoother, which is conducive to high speed transmission.

 Application of sputtered copper: 
Copper metal film can be made into a conductive material by plating it on a flexible substrate, and can be used as an electrode material after making circuit lines on the copper film.

Other applications include: EMI Shielding Film, Flexible Copper Clad Laminate(FCCL), FPC Antennas and other electronic component fields.

2.Aluminized material properties and applications 

Material characteristics	Description
Lightweight and high strength	Aluminum is a lightweight and high-strength metal material. Its specific gravity is only about one-third that of iron, but it is very strong and can withstand high-speed sputtering and high-energy ion bombardment.
Corrosion resistance	Aluminum has good corrosion resistance, can resist a variety of chemical corrosion, and is not easily oxidized.
Electrical Conductivity	Aluminum is a good conductor of electricity and exhibits excellent properties in terms of electrical conductivity.
Uniformity	The composition of the aluminum target is uniform, which can ensure the uniformity of the sputtered material.

Aluminized materials are widely used in metal film deposition, surface modification, electronic components and other fields.

3.Characteristics and applications of ITO plated materials 

Material characteristics	Description
Transparency	ITO has high transmittance in the visible light range and can be used to make transparent conductive films.
Conductivity	ITO has excellent electrical conductivity and can be used to make conductive films. It is a commonly used transparent electrode material.
Optical properties	ITO has a high refractive index and low reflectivity and can be used to make anti-reflective films.
Chemical stability	ITO has good chemical stability, can resist corrosion and oxidation, and can operate stably in high temperature environments.

ITO film applications: transparent electrodes, touch panels, Electronic Shelf Label, Electro Luminescent, privacy films for mobile phones/computers, KIOSK multimedia self-service machines, POS machines, etc.

4.Graphite plated material properties and applications 

Material characteristics	Description
Electrical conductivity	Graphite has good electrical conductivity, so it can be used in various electronic devices, such as protective layers of metal substrates, film resistors, thermistors, etc.
High-temperature stability	Graphite has good high-temperature stability and can be used in high-temperature environments, such as high-temperature vacuum furnaces, high-temperature heat treatments, etc.
Low expansion coefficient	Graphite has an extremely low expansion coefficient, so it can be used in high-precision measuring instruments, manufacturing precision machinery, etc.
Chemical stability	Graphite has good stability to most chemicals and can be used in a variety of chemical environments.
Thermal Conductivity	Graphite has good thermal conductivity properties, so it can be used in various high thermal conductivity applications, such as: thermal conductive heat sinks.

Graphite application:
It is widely used in semiconductors, electronic devices, battery materials for electric vehicles, aerospace, nuclear engineering and other fields.

Compared with artificial graphite sheets, sputtered graphite does not shed powder. In addition to the above characteristics, it can also improve wear resistance, increase surface hardness and other functions.

Topnano can sputter graphite on plastic substrates such as PET/PI Film, or on metal substrates such as copper foil, to produce high-quality graphite composite films.

*Topnano provides roll-to-roll sputtering OEM services, and stocks the above four types of target materials with conductive properties.

If you have any needs, please see "Roll-to-Roll Sputtering OEM Service" and write email to us for enquiry.

*For more Q&A about roll-to-roll sputtering, please see the FAQ at the top of the official website