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Cynora, a company that specialises in TADF (thermally activated delayed fluorescence) materials, has developed new material classes that it claims to combine both high efficiency and long lifetime for blue emissions. This means the commercialisation of Cynora’s TADF materials is planned for the end of 2017.
Earlier this year, Cynora had established two blue emitter systems where one of them showed a high efficiency while the other showed a long lifetime. During the past six months Cynora has made further progress by combining high efficiency and long lifetime in a single blue emitter system.
In an OLED device, the new blue material reaches 14 percent EQE (external quantum efficiency) together with a lifetime of 420h (LT80, at 500 cd/m2, λ < 480 nm). With this performance, Cynora has now shown that blue TADF emitters can reach OLED display specifications soon.
“Our constant progress on blue TADF emitters was made possible by our growing team of TADF experts and by the close collaboration with Cynora’s customers” says Thomas Baumann, CSO at Cynora, “We have developed several classes of high performance TADF materials which we are currently optimizing for market readiness at the end of next year.”
Cynora’sdopants are organic and designed for existing vacuum deposition. The company will adapt the blue TADF emitters for solution processing in a second step. With its blue TADF technology Cynora will enable device makers to provide OLED displays with significantly increased energy efficiency and higher display resolution.