一种基于液晶性质的Pt配合物磷光材料电致发光器件  

A new EL device based on Pt complex phosphorescent materials with liquid crystal

作　　者：朱凤稚[1] 杨刚[1] 李璐[1] 于军胜[1] 蒋泉[1] 钟建[1] 骆开均[2] 

机构地区：[1]电子科技大学光电信息学院,四川省显示科学与技术重点实验室,四川成都610054 [2]四川师范大学化学与材料学院,四川成都610081

出　　处：《光电子．激光》2010年第6期829-832,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(20472060)

摘　　要：采用聚合物掺杂的方式,利用旋涂工艺制备了ITO/PVK:TOPPt/BCP(20 nm)/Mg:Ag(200 nm)结构的有机电致发光器件(OLED)。对掺杂浓度为2%(器件A)和4%(器件B)的磷光聚合物掺杂体系的光致发光(PL)和电致发光(EL)性质进行了分析研究,并对主体材料PVK到磷光客体材料TOPPPt的能量传递机制进行了讨论。实验表明,器件的EL谱谱峰位于625 nm,器件A在25 V时最大亮度为3037 cd/m2,最大电流效率为3.15cd/A。器件的EL谱不会随着偏置电压和掺杂浓度而改变,器件具有较好的稳定性。A new phosphorescent material with the structure of ITO/PVK：TOPPPt/BCP（20 nm）/Mg：Ag（200 nm） is fabricated based on Pt complex.The polymer doped organic light-emitting diodes with the concentrations of 2% and 4% are studied respectively.The relative characteristics of the devices are studied.The results show that the peak at 625 nm is the emission spectrum of TOPPPt,and the emission spectrum of TOPPPt almost have no change at different driving voltages and the electro-phosphorescent characteristics of TOPPPt is very stable.The highest brightness of phosphorescent device with the doped concentration of 2%,is 3 037 cd/m2 under the driving voltage of 25 V,the highest current efficiency is 3.15 cd/A.

关 键 词：有机电致发光器件(OLED) 磷光 Pt配合物 聚合物掺杂 

分 类 号：O644[理学—物理化学] TN383[理学—化学]