罗丹明B掺杂ZnQ_2的电致发光器件及其性能研究  

Fabrication and characterization of OLED with RhB doped in ZnQ_2

作　　者：丁洪流[1] 赵婷[1] 施国跃[1] 金利通[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《华东师范大学学报（自然科学版）》2008年第4期88-95,共8页Journal of East China Normal University(Natural Science)

基　　金：国家自然科学基金(20575021)

摘　　要：将8-羟基喹啉锌(ZnQ_2)和8-羟基喹啉铝(AIQ_3)的发光性能进行比较,筛选出ZnQ_2作为掺杂发光层主体材料,与荧光染料罗丹明B(RhB)共掺杂,采用真空热蒸镀法制备有机电致发光器件(OLEDs).掺杂不同浓度RhB可以获得不同波长的光发射,得到不同的发光色调.通过对溶液态荧光光谱和器件发光光谱等特性的测量与分析.探讨了器件的能量转移及发光机理.By vacuum evaporation deposition, dye-doped OLEDs were fabricated with the structure of ITO/TPD/ZnQ2 ： Rhodamine B（RhB）/Al. The luminescent layer was composed of a dye RhB doped into ZnQ2 （his （8-hydroxyquinolato） zinc） layer which showed much better electrolu- minescent properties than AlQ3 （tri （8-hydroxyquinolato） aluminum）. With different RhB con- centration, OLED electroluminescence emission got different peak wavelength and visual color. The maximal shift of 34 nm was obtained due to dopant concentration. By investigating photolu- minescence as well as electroluminescence behaviors, the energy transfer mode and emission mechanism were discussed in this paper. Both energy transfer and carrier trapping have been suggested to be responsible for dopant excitation and emission.

关 键 词：8-羟基喹啉锌 罗丹明B 有机电致发光器件(OLEDs) 能量转移 载流子陷阱俘获 

分 类 号：TN383.1[电子电信—物理电子学]