| 초록 |
Light-emitting electrochemical cells (LECs) are the emerging class of ultra-low cost electroluminescent devices. In contrast to expensive organic light-emitting diodes (OLEDs), the performance of LEC devices are still lagging behind. However, recent reports on LEC devices with small organic molecules presents a new lease of life for this potential lighting technology.Fascinated by the previous performances of phenanthroimidazole derivative endorsed LECs, here we are introducing two LEC devices having two new ionic blue emitting phenanthroimidazole derivatives as an active materials. The synthesis, electrochemical and photophysical properties of those target emitters were investigated. Bilayer LEC devices were fabricated with both the emitters and their electroluminescent characteristics were investigated with a constant voltage scanning. It is noteworthy that our device 1 exhibited blue electroluminescence at 488 nm with a reasonable brightness of 277 cd/m2. |
