Title of article :
Synthesis and Properties of 9,9-Diaryl-4,5-diazafluorenes. A New Type of ElectronTransporting and Hole-Blocking Material in EL Device
Author/Authors :
Ono، Katsuhiko نويسنده , , Yanase، Tomoki نويسنده , , Ohkita، Masakazu نويسنده , , Saito، Katsuhiro نويسنده , , Matsushita، Yosuke نويسنده , , Naka، Shigeki نويسنده , , Okada، Hiroyuki نويسنده , , Onnagawa، Hiroyoshi نويسنده ,
Abstract :
The title compounds were prepared and investigated for electron-transporting and hole-blocking materials in organic electroluminescent (EL) devices. EL efficiencies of the phosphorescent devices indicated high performance of hole-blocking ability in the compounds. A maximum external efficiency of 18% was achieved and a maximum power luminous efficiency was over 45 Lm W^-1.
Keywords :
Application-production research , prediction , grinding , Surface finish , Power requirement , Genetic-fuzzy system
