Stakhira, P.Khomyak, S.Cherpak, V.Volyniuk, D.Simokaitiene, J.Tomkeviciene, A.Kukhta, N.A.Grazulevicius, J.V.Kukhta, A.V.Sun, X.W.Demir, Hilmi VolkanHotra, Z.Voznyak, L.2016-02-082016-02-082012-01-210379-6779http://hdl.handle.net/11693/21553The 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.EnglishBlue emittingCarbazole derivatesOrganic light emitting diodePyrazoline derivativeVacuum depositionBlue emissionBlue organic light emitting diodesBlue-emittingCarbazole derivatesCyclic voltammogramsElectron-transporting layersExperimental studiesOrganic light-emittingPeak wavelengthPyrazoline derivativePyrazolinesElectroluminescenceLuminescent devicesOptoelectronic devicesPhenolsPolycyclic aromatic hydrocarbonsVacuum depositionOrganic light emitting diodes (OLED)Article10.1016/j.synthmet.2011.12.017