Highly efficient blue emitting materials consisting of dual core derivatives with triphenylamine side groups and symmetric structures were designed and synthesized. Of the synthesized compounds, DPA-AP-DPA was found to exhibit the highest EL device ef...
Highly efficient blue emitting materials consisting of dual core derivatives with triphenylamine side groups and symmetric structures were designed and synthesized. Of the synthesized compounds, DPA-AP-DPA was found to exhibit the highest EL device efficiency of 4.19 cd A-1 and 4.49% EQE. OLED devices were fabricated by the synthesized compounds using vacuum deposit process as an emitting layer. Device structure was ITO/2-TNATA 60nm/ NPB 15nm/ EML 35nm/ TPBi 20nm/ LiF 1nm/Al 200nm. mTPA-AP-mTPA and TPA-AP- TPA exhibit EL maximum values of real blue color in the range 455 nm to 463 nm. The y values of their color coordinates are within the range 0.150 to 0.260, so these compounds exhibit good blue color coordinates for displays.