Technology is APEVA's heart and soul. Our engineers are working hard everyday to optimize each aspect of our systems.
The organic luminescent layer - the core of a new type of lighting principle
Organic light-emitting diodes (OLEDs) are extremely light, use little energy and deliver brilliant colors and contrasts. They are built into many products: tablets, laptops, mobile phones, smartwatches even the first flexible OLED televisions with a screen depth of only 2 mm are commercially available. The superior quality has been wide demonstrated by OLED TVs in the market. Research is currently being carried out on electronic paper, transparent displays and luminous wallpaper, which can change its color on request and also serve as a screen.
An organic layer is 500 millionths of a millimeter "thick"
How is that possible? It's down to the materials they're made from. The thickness of an organic layer is only 500 nanometers, that is 500 billionths of a meter or 500 millionths of a millimeter. That is one hundredth of a human hair - and that with extreme accuracy over the entire surface. When an electrical voltage is applied, these layers develop a very high luminosity.
Small Molecules: We know how to vaporize molecules
With the development of materials for the production of organic light-emitting diodes, APEVA is starting a technology that lights up large areas. We rely on the evaporation of so-called small molecules (small molecule materials).
What is important in production
The requirements for the production of organic layers are extremely high. We are able to vaporize difficult materials very efficiently.
Organic materials are expensive. And they are very sensitive to thermal stress. Therefore, one of the challenges is to evaporate as much material as possible at the lowest possible temperatures. The more even the coating, the more efficient and cost-effective the production.
The vapor deposition process - an extremely sensitive process step in OLED production
APEVA relies on the evaporation of small molecules in a fine vacuum. The organic molecules are transported according to the principle of gas phase transport to very large areas where they condense. This step is also called the vapor deposition process. The technology we use for this is called Organic Vapor Phase Deposition (OVPD). Our technology has clear advantages over thermal vacuum evaporation, especially when it comes to transferring the processes from the laboratory to mass production.
We give customers complete freedom in manufacturing
By combining the Organic Vapor Phase Deposition (OVPD) with our proven, patented Showerhead® technology, we obtain a process that is freely scalable - that is, it can be used extremely flexibly for any substrate size. With this production approach, customers achieve high material growth rates at low temperatures.