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2014年10月17日
D3 田君の論文が Chemistry Letters に掲載されました!

D3 田君、論文掲載おめでとう!

 

A donor-acceptor type host material for solution-processed phosphorescent organic light emitting devices showing high efficiency

 

Chang-Hwa Jun, Yong-Jin Pu, Masahiro Igarashi, Takayuki Chiba, Hisahiro Sasabe, and Junji Kido, Chemistry Letters, ASAP

 

The solution-processable host material, 3,3’-[bis(9,9’-phenylcarbazol-3-yl)]-benzophenone (PCzBP), containing a donor-type phenylcarbazol unit and an acceptor-type benzophenone unit was synthesized. PCzBP showed high excited triplet energy level and a high photoluminescence quantum efficiency with Ir(mppy)3as a host. Solution-processed green phosphorescent OLEDs using an emitter of Ir(mppy)3 showed high external quantum efficiency (EQE) of 9.8% and long half-lifetime of 365 h at the practical brightness of 1000 cd/m2.

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