Update: Kyushu University published an interesting video with more details about this new technology

Researchers from Japan's Kyushu University developed new efficient rare-metal free OLED emitter materials based on dicyanobenzene derivatives. They say that these new materials (which they call hyperfluorescence) are as efficient as phosphorescent OLEDs, but are cheaper (about 1/10th of the cost) because they do not require rare metals.

The researchers say that they are now seeking to collaborate with Japanese makers to commercialize this technology "at an early date". They already created some display prototypes with the new materials (see photo above).

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Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs