Study On EL Devices Of Europium Complexes And Terbium Complex

Intense academic and industrial research efforts in organic electroluminescent (EL) devices have yielded remarkable progress due to their potential commercial applications in full-color flat panel display in recent years. This dissertation is focus on optimizing procedures of fabricating devices and performance of the rare earth complexes in organic EL devices, including the following:1.EL study of europium complexesIn this paper, we will primarily discuss the electroluminescent property of some europium coordination complexes which has TTA as the first ligand and a series of neutral ligands. We fabricate EL devices with different structures through selecting several host materials, controlling the thickness of the functional layer and changing the adulteration ratio. And we discuss the difference of the electroluminescent property in the aspect of the structure of the material. We will also discuss how the neutral ligand influence the electroluminescent property.2. EL study of terbium complexes Tb (PMIP)₃The study of the EL device of the complex Tb(PMIP)₃ respectively explained the influence of different thickness of hole-transporting, electron transporting, hole blocking layer and the luminescent layer to the property of the device. At the same time, we studied how the different electron blocking layer influence the property of the device. The result shows that we can control the recombination zone of the charge carriers and get good EL through controlling the thickness of the functional layers. Device ITO/NPB(10 nm)/Tb (PMIP)₃(20 nm)/Tb(PMIP)₃: CTPPO {å…±è'¸1:1 }(30 nm)/BCP(10 nm)/A1Q(20 nm)/Mg_0.9Ag_0.1 can reach the brightness of 2256 cd/m² under 20 V, this spectra is still pure Tb emission.