German Researchers Developed Single-layer OLEDs

- Jul 15, 2019-

According to foreign media reports, the Max Planck Institute for Polymer Research has developed a prototype of a single-layer OLED, which indicates that manufacturing costs may be relative to OLEDs that are now stacked together. Greatly reduced.


The R&D team used a decades-old technology called Thermally Activated Delayed Fluorescence (TADF) with a lifespan of 2000 hours and a 50% reduction in brightness.


Team leader Gert-Jan A. H. Wetzelaer said, “Now we want to further improve the concept and achieve a longer service life”, “this allows the concept to be used for industrial purposes.”


A single layer can greatly reduce the cost of an OLED typically 5 to 7 layers.


The team published their findings in the journal Nature Photonics.


OLED is an organic light emitting diode, and its principle of illumination is similar to that of an LED, except that the LED is made of an inorganic semiconductor as a luminescent material, and the luminescent material used is an organic material.


We have long believed that OLEDs will completely change the lighting structure because OLEDs have the characteristics of being bendable and flexible. However, the fact is that production costs are high. Moreover, OLEDs lag behind LEDs in terms of energy efficiency, and LED manufacturers have improved their designs by embedding LEDs in thin sheets to mimic the effects of OLEDs.