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Transparent Conductive Films (TCFs) are used in most high-tech displays and touchscreens. Currently, the electronics industry relies primarily on Indium Tin Oxide (ITO) to make electro-conductive films for displays.
However, ITO presents a number of challenges:
It is brittle, making it unsuitable for touchscreens and flexible displays
The cost of processing ITO is very high.
Single-walled carbon nanotubes (SWNT) are an ideal alternative, resolving the above challenges while offering exceptional electrical and mechanical properties. Up until now, however, their use was limited as a result of technical barriers.
Linde Nanomaterials has developed an innovative SWNT technology that overcome these barriers. This technology enables best-in-class transparent conductive thin films suited to a wide application spectrum including solar cells, touchscreens, displays, electrochromic windows and thin-film transistors.
A Closer Look
SWNTs must be solubilised before they can be turned into TCFs. The sonication methods typically used to achieve this have the downside of limited scalability and damage to the SWNT structure. Linde Nanomaterials has overcome these issues by eliminating the need for sonication, ultracentrifugation and functionalisation.
Linde’s innovative, scalable reductive dissolution technology uses liquid ammonia to produce solubilised carbon nanotubes in the form of inks, which can then be deposited as films. The negative charge on the SWNTs within the ink allows for further functionalisation, extending the field of potential applications to composites, sensors and biology.
Pursuit of Excellence
Our extensive process know-how ensures that our carbon nanotubes exceed the most stringent purity and consistency requirements. Many of the world's largest display and semiconductor manufacturers are already interested in our nanotube inks. They know they can count on the highest quality SWNTs, backed by our in-depth knowledge of critical gas technologies. Our innovative lead in this area is driven by our various Centres of Excellence – such as the one for carbon nanotubes.
How Reductive Dissolution Technology Works