Author/Authors :
Stakhira، نويسنده , , P. and Khomyak، نويسنده , , S. and Cherpak، نويسنده , , V. and Volyniuk، نويسنده , , D. and Simokaitiene، نويسنده , , J. and Tomkeviciene، نويسنده , , A. and Kukhta، نويسنده , , N.A. and Grazulevicius، نويسنده , , J.V. and Kukhta، نويسنده , , A.V. and Sun، نويسنده , , X.W. and Demir، نويسنده , , H.V. and Hotra، نويسنده , , Z. and Voznyak، نويسنده , , L.، نويسنده ,
Abstract :
The results of an experimental study of the electroluminescent device made of ITO/CuI/2,6-di-tert.-butyl-4-(2,5-diphenyl-3,4-dihydro-2H-pyrazol-3-yl)-phenol (HPhP)/3,6-Di(9-carbazolyl)-9-(2-ethylhexyl) carbazole (TCz1)/Ca:Al with efficacy up to 10.63 cd/A are presented. HPhP provides blue emission with a peak wavelength at 445 nm. The layer of TCz1 acts as an electron-transporting layer. In the framework of density functional theory (DFT) approach the geometry configuration and energy levels of HPhP are found being in a good agreement with spectral and cyclic voltammogram data.
Keywords :
Pyrazoline derivative , Carbazole derivates , Organic light emitting diode , Blue emitting , Vacuum deposition
