发光学报2016，Vol.37Issue(8)：961-966,6.DOI:10.3788/fgxb20163708.0961
非掺杂型高效绿色磷光有机电致发光器件
High Efficiency Green Phosphorescent Organic Light Emitting Diodes Using An Ultrathin Nondoped Emitting Layer
摘要
Abstract
The nondoped emitting layer ( EML) was constructed by introducing a ultrathin layer of pure green phosphorescent dye tris(2-phenylpyridine)iridium[Ir(ppy)3] between a hole transpor-ting layer TCTA and an electron transporting layer TPBi. The device structure is ITO/MoO3 ( 2 nm)/NPB(40 nm)/TCTA(10 nm)/Ir(ppy)3(0. 1-0. 5 nm)/TPBi(40 nm)/LiF(1 nm)/Al(80 nm) . The thickness of EML can affect the performance of green phosphorescent organic light emit-ting diodes ( PhOLEDs ) . By changing the thickness of emitting layers, the best performance of green PhOLEDs can be achieved with a 0. 2 nm pure phosphorescent dye. The device exhibits highly efficient green emission with a maximum luminance of 26 350 cd · m-2 , a maximum current effi-ciency of 42. 9 cd·A-1 and a maximum external quantum efficiency of 12. 9%. These results indi-cate that the high performance PhOLEDs can be realized with only ultrathin nondoped EMLs in a simple way.关键词
超薄非掺杂发光层/有机电致发光二极管/激子Key words
ultrathin nondoped emissive layer/organic light-emitting diodes/excitons分类
信息技术与安全科学引用本文复制引用
由雪萌,张新稳,陈月花,赖文勇,黄维..非掺杂型高效绿色磷光有机电致发光器件[J].发光学报,2016,37(8):961-966,6.基金项目
国家重点基础研究计划(2014CB648300) （2014CB648300）
国家自然科学基金(61204048) （61204048）
南京邮电大学科研基金(NY214178, NY214093,NY215076) （NY214178, NY214093,NY215076）
江苏高校优势学科建设工程(YX03001)资助项目 （YX03001）
