Researchers from Germany in collaboration with Oreltech use printed silver-inks as OLED electrode

Researchers from the Helmholtz Center Berlin for Materials and Energy and the Physics Department of the Humboldt University Berlin, together with Oreltech, developed a new flexible OLED prototype that uses Oreltech's silver-inks to deposit electrodes on PET substrates.

The researchers report that the new device outperforms ITO-based devices in both efficiency and luminance - and they are offer better bending stability.

The Oreltech electrodes are made from a particle-free silver ink, and after the deposition an argon plasma is used to reduce the silver ions in the ink to a metallic silver. The electrodes are deposited using an inkjet-printing process which does not require high temperatures.

In 2017 we posted an interview with the company's Head of R&D, Konstantin Livanov.