Transparent yet conductive

GNext holds a unique technology (Carbon Ligi) that allows to apply a thin multilayer coating of graphene over a wide range of plastic films, achieving different degrees of transparency. Our versatile and simple system allows to work in mild conditions, and is compatible with continuous production using industry-level techniques. Its versatility allows us to print conductive layers on all main polymeric substrates, including biopolymers.

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The thickness of our graphene multilayers ranges from 10 nm to tens of microns and it is laterally uniform on large (meters) scale.

Non-transparent conductive films can be produced with a sheet resistance as low as 200 Ohm/sq, while a sheet resistance around 5 kΩ/square and 65% transmittance of visible light characterizes semitransparent thin graphene film.

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GNext films are very stable and not subject to degradation processes.

The electrical performance we achieve are surprisingly durable, even after 50.000 cycles of fatigue bending test. Our films are scratchproof as well, and standard tests of coating hardness (ASTM D 3363/00) show a sheet hardness value of 2H-3H .

Some examples of polymer films coated with Gnext graphene.

Indicative, typical values for general guidance. Values can vary depending on the commercial polymer quality and coating process used.

Polymer film substrate

Sheet resistance
kΩ/sq

Transparency at 550 nm
T%

PET

5-200

65-85

Nylon

30-200

65-85

PP

30-200

60-80

PVC

50-200

60-80

PLA

20-200

65-85

Various polymers coated with GNext technology.

GNext can provide (12 or 100 μm) graphene-coated PET films with various sheet resistance vs. light transmission values:

XT-PET 1      200 kΩ/sq at T=85% (at 550 nm)

XT-PET 2      5 kΩ/sq at T=65% (at 550 nm).

XT PET 2 5-20 kΩ/sq at T=65%

A5 148×210 mm (5,8×8,3 in)

n. sheets price per sheet, €
1 12
3 11
10 8
100 6

B5 176×256 mm (6,9×9,8 in)

n. sheets price per sheet, €
1 17
3 15
10 10
100 8

XT PET 1 100-200 kΩ/sq at T=85%

A5 148×210 mm (5,8×8,3 in)

n. sheets price per sheet, €
1 10
3 9
10 6
100 5

B5 176×256 mm (6,9×9,8 in)

n. sheets price per sheet, €
1 15
3 13
10 8
100 6

Conductive films – technical data

Download our technical data sheet in pdf

We can provide also industrial-scale quantities in the form of meters-long coated film reels. Prices are available under request.