... 283.16Hole Transport Materials: NPB, TPD, TAPC, Spiro-TAD;Hole Injection Materials: F4TCNQ, TCNQ, PPDN, CuPC, TiOPC;Electron ... Transport Materials/Hole Blocking Materials: BCP, BPhen, TPBi, Alq3, Liq, NBphen, ... containing hundreds of kinds of materials such as hole injection materials, hole transport materials, light-emitting layer materials and ...