They have been around for some years now and are still a fascinating product of the modern semiconductor industry. Organic light emitting diodes, in short OLEDs, function almost the same way as their non-organic siblings, the LED, however, one part of the light emitting junction is completely made of carbon compounds without any metals.
They have reached long lifetimes, a very good standard of brightness and can be operated at a low energy consumption. Used in displays for screens or cell phones already, even more applications are thinkable because OLEDs can also be produced as a flexible film with light emitting properties.
When it comes to semiconductors, the future is organic.