Researchers from Korea's Pusan National University have developed an efficient deep-blue phosphorescent OLED emitter. The researcher say that their new materials has an EQE of 24% while the color point is CIE (0.149, 0.085).

According to the Korean press, the main achievement in this research was the adjustment of the doping concentration of a novel dopant (mer ‐Ir1) to optimize the balance of electron and holes in the light emitting layer.

We do not know, however, what is the lifetime of this new blue emitter.

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