Blue organic light-emitting diodes based on pyrazoline phenyl derivative
Kukhta, N. A.
Grazulevicius, J. V.
Kukhta, Alexander V.
Demir, Hilmi Volkan
Date of Issue2011
School of Electrical and Electronic Engineering
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.
DRNTU::Engineering::Electrical and electronic engineering
© 2011 Elsevier B.V.