Author/Authors :
Tsuchiya، نويسنده , , Kousuke and Sakaguchi، نويسنده , , Kota and Kawakami، نويسنده , , Akira and Taka، نويسنده , , Hideo and Kita، نويسنده , , Hiroshi and Shimomura، نويسنده , , Takeshi and Ogino، نويسنده , , Kenji، نويسنده ,
Abstract :
Bipolar charge transporting block copolymer composing of carbazole and oxadiazole monomers as hole and electron transporting units, respectively, was synthesized by nitroxide mediated radical polymerization. It is found that the current efficiency significantly increased with the addition of the block copolymer in the device based on polymer blend system. AFM measurement revealed that a phase-separated structure in the polymer blend layer changed to suitable morphology in the presence of block copolymer.
