基于混合配体Znq(DBM)的单色和白色OLED  

Monochrome and white organic light-emitting diodes based on Znq(DBM)

作　　者：苏斌[1,2] 赵静[1] 李春梅[2] 荣光怡[2] 刘春波[2] 车广波[1,2] 田沛东[1] 王庆伟[2] 

机构地区：[1]吉林师范大学环境科学与工程学院,吉林四平136000 [2]吉林师范大学环境友好材料制备与应用教育部重点实验室,吉林四平136000

出　　处：《光电子．激光》2014年第4期653-657,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61205040);教育部新世纪优秀人才支持计划(NCET-10-0176);吉林省创新团队项目(20130521019JH);四平市科技局项目(2011015)资助项目

摘　　要：以8-羟基喹啉(q)和1,3-二苯基-1,3-丙二酮定向合成了有机小分子配合物Znq(DBM),将其作为发光层制备了单色有机电致发光器件(OLED)。在结构为ITO/m-MTDATA(5nm)/NPB(40nm)/Znq(DBM)(60nm)/LiF(0.5nm)/Al(100nm)的器件中,启亮电压为5V,最大亮度达到4 575cd/m2。同时又在器件中引入间隔层BCP,研究其不同厚度对OLED性能的影响。在结构为ITO/m-MTDATA(5nm)/NPB(40nm)/BCP(x nm)/Znq(DBM)(60nm)/LiF(0.5nm)/Al(100nm)的器件中,当BCP层厚为0nm时,发光颜色为黄绿色;当BCP层厚为1nm时,发光颜色为白色,色坐标为(0.29,0.33),最大亮度为2 231cd/m2;当BCP层厚为5nm时,发光颜色为蓝色。根据器件结构和性能,讨论了其内部机理。Organic light-emitting diode （OLED） is considered to be a new generation of flat panel display due to many advantages, such as high efficiency and luminance, low drive voltage and light weight. Organic metal complexes based on 8-hydroxyquinoline are widely used due to simple synthesis, high luminance and efficiency, as well as superior film morphology. The small molecule organic complex of Znq （DBM） was designed and synthesized with 8-hydroxyquinoline and 1,3-diphenyl-1,3-propanedione. Monochrome OLED was fabricated based on Znq （DBM） as emitting layer. The structure of OLED is ITO/m-MTDATA （5 nm）/NPB（40 nm）/Znq（DBM） （60 nm）/LiF（0.5 nm）/Al（100 nm）,the turn-on voltage is 5 V and the maximum luminance is 4 575 cd/m2. Then an interlayer of BCP was introduced into OLED,and the performance of OLED is studied with the thickness of BCP. The structure of OLED with interlayer is ITO/m-MTDATA （5 nm）/NPB（40 nm）/BCP（x nm）/Znq（DBM） （60 nm）/LiF（0.5 nm）/Al（100 nm）. When the BCP is 0 nm,the EL color is greenish yellow. When the BCP is 1 nm,the EL color is white,the CIE coordinate is （0.29,0.33） and maximum luminance is 2231 cd/m2. But when the BCP is 5 nm, the EL color is blue. The working mechanism of the OLED is also discussed in terms of the performance and device structures.

关 键 词：Znq(DBM) 混合配体 有机电致发光器件(OLED) 间隔层 

分 类 号：TN383.1[电子电信—物理电子学]