Devices with double layer structure ITO/BCMVBi/PBD/LiF/Al and ITO/BCPVBi/PBD also show good blue light-emitting characters, which confirms these materials have good hole transfer ability.

• 双层结构器件Ito/BCMVBi/PBD/LiF/Al和Ito/BCPVBi/PBD/LiF/Al也表现出较好的蓝色发光性能,表明这类新材料具有较好的空穴传输特性。