Optimizing structure for constructing a highly efficient inverted top-emitting organic light-emitting diode with stable electroluminescent spectra  

作　　者：张小文 许积文 王华 魏斌 曾华荣 蒋雪茵 张志林 

机构地区：[1]Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology [2]Key Laboratory of Advanced Display and System Applications,Ministry of Education,Shanghai University [3]Key Laboratory of Inorganic Functional Materials and Devices,Shanghai Institute of Ceramics,Chinese Academy of Sciences

出　　处：《Journal of Semiconductors》2014年第2期24-27,共4页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.61077013);the Guangxi Natural Science Foundation(No.2012GXNSFBA053168);the China Postdoctoral Science Foundation(No.2012M521550);the Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology(No.1110908-04-K)

摘　　要：We demonstrate a highly efficient inverted top-emitting organic light-emitting diode （TOLED） having stable electroluminescent spectra and color coordination with variation of viewing angles by simply tuning the reso- nance wavelength corresponding to the free emission of the emitter. Using a doped fluorescent emitting system, the inverted TOLED exhibits an enhanced maximum current efficiency of 19 cd/A and a power efficiency of 17 lm/W, which are much higher than those （11 cd/A and 5 lm/W） of the counterpart with normal structure, although both TOLEDs behave with similar stable electroluminescent spectra characteristics. The results indicate that we provide a simple and effective method of constructing an excellent inverted TOLED for potentially practical applications.We demonstrate a highly efficient inverted top-emitting organic light-emitting diode （TOLED） having stable electroluminescent spectra and color coordination with variation of viewing angles by simply tuning the reso- nance wavelength corresponding to the free emission of the emitter. Using a doped fluorescent emitting system, the inverted TOLED exhibits an enhanced maximum current efficiency of 19 cd/A and a power efficiency of 17 lm/W, which are much higher than those （11 cd/A and 5 lm/W） of the counterpart with normal structure, although both TOLEDs behave with similar stable electroluminescent spectra characteristics. The results indicate that we provide a simple and effective method of constructing an excellent inverted TOLED for potentially practical applications.

关 键 词：OLED inverted structure stable electroluminescent spectrum microcavity effect 

分 类 号：TN383.1[电子电信—物理电子学]