초록 |
The starbust amine m-MTDATA or CuPc compound acting the role of the hole injection layer(HIL), was inserted to improve device efficiency and durability. CuPc is one of the most stable HIL compound so it applies many OLEDs devices. But it absorbs slightly blue and red light, it can't use fabrication of full color display. And m-MTDATA have low Tg. We propose new HIL materials by using phenothiazine moiety which is new functional group for organic materials. We synthesized the new conjugated compound, 10’-(4-tert-Butyl-phenyl)-10'H[10,3';7'10"]terphenothiazine (t-BPTP) and 7,7'-Diphenothiazyl-10,10’-bis-(4-tert-butyl-phenyl)-10H,10'H[3,3'] biphenothiazinyl (DP-t-BPBP). We characterized optical and electroluminescent(EL) properties of these materials. |