聚合物MEH-PPV橙红光OLED的研究  

Study of Orange Organic Light-emitting Devices Based on MEH-PPV Polymer

作　　者：锁钒[1] 于军胜[1] 邓静[1] 黎威志[1] 蒋亚东[1] 

机构地区：[1]电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《半导体光电》2007年第3期324-326,353,共4页Semiconductor Optoelectronics

基　　金：部级基金项目;电子科技大学中青年学术带头人基金资助项目

摘　　要：以聚合物聚[2-甲氧基-5-(2′-乙烯基-己氧基)聚对苯乙烯撑](MEH-PPV)为发光层,采用旋涂方法制备了两种不同结构的有机电致发光器件(OLED),分别为:ITO/MEH-PPV/Alq3/Mg∶Ag和ITO/MEH-PPV/bathocuproine(BCP)/Alq3/Mg∶Ag。对两种器件的电致发光谱、J-V曲线和L-V曲线等发光特性进行了分析研究。对比发现,采用BCP为空穴阻挡层的结构具有较大的发光亮度和较高的发光效率。根据能级理论对上述实验结果进行了初步的理论分析,并对器件性能差异的原因进行了解释。Two different organic light-emitting devices （OLED） with the structures of indium-tin-oxide （ ITO ）/poly [- 2-methoxy-5-（ 2-ethylhexoxy ）-1, 4-phenylene-vinylene ] （ MEH- PPV）/Alq3/Mg ： Ag and ITO/MEH-PPV/bathocuproine（BCP）/Alq3/Mg ： Ag were fabricated by using spin-coating method, where the polymer MEH-PPV plays the role of lightemitting layer. The electroluminescence performance of these two devices has been investigated. Results demonstrate that the luminance of the devices with the latter structurer has better performance, which exhibits a higher luminance and light emitting efficiency. Primary theoretical analysis is given to explain the experimental results according to energy theory, and the performance diversity of the devices with different structures is discussed.

关 键 词：聚合物 聚[2-甲氧基-5-(2′-乙烯基-己氧基)聚对苯乙烯撑] 橙红光 

分 类 号：TN383.1[电子电信—物理电子学]