Researchers from Osaka University developed the best performing heavy-metal-free room-temperature phosphorescence (RTP) OLED emitters.

SiAz TADF / RTP OLED emitter (Osaka University)

The researchers say that the new emitter (called SiAz), made entirely out of carbon, hydrogen, nitrogen, and silicon atoms, combines the mechanisms of TADF and RTP to create an efficient emitter system.

The EQE of this material is still low at 4%, but it is the best reported heavy-atom-free OLED based on RTP.

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