In the emitting layer of an OLED, the positive and negative charge-carriers recombine in the conducting layers and form so-called excitons, which can be converted into light by the emitter material.
The energy of the excitons depends on the stack structure of the OLED and the materials from which it is built. Excitons come in two forms: singlet excitons and triplet excitons occurring with a ratio of 1:3. For highly efficient OLEDs, both types of excitons have to be converted into light. This is less straightforward for triplet excitons.
CYNORA develops blue emitters based on TADF technology
CYNORA focuses on materials that are able to convert triplet excitons into light via Thermally Activated Delayed Fluorescence (TADF). These materials are designed to reduce electrical stress within the OLED and are thus ideally suited for efficient blue emitter technology. TADF combines the advantages of Phosphorescence (high efficiency) and Fluorescence (lifetime). This technology enables us to provide stable and efficient blue emitters, which allow for improved energy efficiency and higher display resolution.