有机/聚合物电致发光材料的能带结构及其在发光器件中的应用  

Energy Band Structure of Organic/Polymer Materials and its Applications in Electroluminescent Devices

作　　者：田文晶[1] 吴芳[1] 樊玉国[1] 沈家骢[1] 

机构地区：[1]吉林大学超分子结构与谱学开放实验室,吉林长春130023

出　　处：《发光学报》2000年第3期230-237,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金资助课题!( 5 95 70 5 0 0 1)

摘　　要：测定了苯撑乙烯齐聚物、吡唑啉衍生物、钌配合物、铼配合物以及常用的有机染料与载流子传输材料等一百余种有机 (包括有机小分子 ,配合物和聚合物 )材料的能带结构参数 ,探讨了不同取代基对材料“能带”结构的影响。基于能带匹配的原则 ,同时考虑载流子迁移率匹配及各有机层间的厚度匹配 ,设计了不同结构的电致发光器件。研究表明 ,能带匹配、迁移率匹配以及厚度匹配是提高有机电致发光器件性能的重要依据。Organic/polymeric electroluminescence (EL) has attracted much attention due to its potential applications in large area full color flat panel displays. Since the first report of high performance double layer organic light emitting device by C.W. Tang in 1987, much progress has been made in this field. A lot of novel materials have been synthesized. So it becomes very important to characterize and evaluate the properties of these materials. Study on the energy band structure of organic/polymer materials is very significant. It can give directions in materials design and synthesis, devices design and fabrication, and device properties improvement. In this work, we focus on the characterization and analysis of the energy band structure of more than one hundred kinds of organic/polymer EL materials by cyclic voltammetry and UV Vis spectra method. The materials include a series of π conjugated rigid rod phenylene vinylene (PPV) oligomers, pyrazoline derivatives system, bipyridine ruthenium complexes system, rhenium complexes system and some other materials(including EL materials and carrier transporting materials) in common use. Based on the principle of energy level matching, a series of organic EL device were designed and fabricated. The result shows that a good performance device can be obtained by considering the energy band matching, the thickness matching, as well as the carrier mobility matching.

关 键 词：能带结构 有机/聚合物 电致光材料 发光器件 

分 类 号：TN873.3[电子电信—信息与通信工程]