The LEO project (Low-cost / energy Efficient OLEDs) was launched in June 2015 with an aim to develop efficient and cost-effective OLED applications for the lighting industry. The three-year project was launched as part of the EU's Horizon 2020 framework with a grant of 4 million Euro.

The project partners are Osram, France's CEA and Italy's CNR, ArcelorMittal, Fundacion Gaiker (as the sustainability experts) and Cynora that will contribute innovative emitter and host materials for OLEDs.

In December 2017 the project consortium announced its almost-final results.