Study on Photoelectric Properties of Novel Rare Earth Complexes in Doped Systems

Study on Photoelectric Properties of Novel Rare Earth Complexes in Doped Systems
　　The luminescence of rare earth complex feathers sharp-band emissions、pure chroma、rich colors and high inner quantum efficiency. However, devices based on rare earth complex have poor stability and short lifetime which restrict the application of rare earth complex. Two methods which improve the performance of devices based on rare earth are to synthesize new materials and to change the device structure by using different transporting materials. This thesis focuses on a novel complex Tb0.5Eu0.5(TTA)3Dipy and its application in electroluminescent devices. In addition, we fabricated white light emitting device based on rare earth complex.
　　The detailed contents are as follows:1 Synthesis and the characteristics of the novel rare earh complexThe novel material Tb0.5Eu0.5(TTA)3Dipy was synthesized. By doping the rare earth complex into polymer PVK, the mechanism of energy transfer was Magnetic lifter also studied. Compared with the material Eu(TTA)3Dipy, it is concluded that the Tb3+ acts as an energy transfer bridge that helps energy transfer from PVK to Eu3+ efficiently.2 Fabrication and properties of EL devicesThe EL device was fabricated with the structure of ITO/PVK:Tb0.5Eu0.5(TTA)3Dipy/PBD/Al by using PVK:Tb0.5Eu0.5(TTA)3Dipy as the emitting layer. http://www.999magnet.com/ Through measurement of EL spectra, the mechanism of EL was studied. The emission intensity with different doping ratios was compared3 The electroplex emission in organic electroluminescent diode based on rare earth materialIn the EL spectra of the device with the structure of ITO/ PVK:Tb0.5Eu0.5(TTA)3Dipy/BCP/ Alq3/Al, a new peak at 490 nm was detected. Through the analysis and compare of the different devices, the mechanism of the new emission was investigated. It was concluded that the new emission is the electroplex originating Magnetic lifter from the interface between the ligand and BCP.4 The investigation of the white light emitting device based on co-doped systemA novel organic electroluminescent device was fabricated with the structure of ITO/ PVK: Eu(aspirin)3phen : Alq3/BCP/Alq3/Al, which use PVK: Eu(aspirin)3phen:Alq3 as the emitting layer. The mechanism of energy transfer and electroluminescence were studied. Kept the quality ratio of PVK and Eu(aspirin)3phen