Printed Transparent Conductive Films

Transparent conductive films are used in many areas of daily life. They are primarily utilized in displays, OLEDs and photovoltaics. Ever-shorter display lifecycles and the emerging market for flexible electronics are causing manufacturers of transparent conductive films and electrodes to search for alternatives to the conventional material of indium tin oxide (ITO). This material is not only difficult to obtain but also very fragile. Research conducted in recent years has shown that there are no other materials available which could surmount the disadvantages of ITO without displaying weaknesses other areas. Alternative materials either have a poorer optoelectrical efficiency or are more opaque. This does not correspond with today’s standards as far as function and visual appearance are concerned.

Fraunhofer IPA pursues the approach of combining several different materials. The combination of silver nano wires and nanoscale carbon has shown to be particularly promising. Synergy effects enable transparent electrodes to be produced in a quality that meets industrial requirements. Layers have a resistance of less than 80 Ohm/sq and a transparency of over 97 % with a haze of less than 1 %. Additionally, the manufacturing process is also more reliable.

The group “Application of multifunctional layers” at Fraunhofer IPA does more than just develop transparent conductive films. It also concerns itself with the necessary application and printing technologies for applying these layers to a wide range of substrates, such as glass or polymers.

We help you reach your individual targets in the field of transparent conductive layers. Together with you, we devise resource-efficient and cost-effective solutions to manufacture your products.