Improved interconnecting structure for a tandem organic light emitting diode

被引：25

作者：

Liu, Jinsuo ^{[1
]}

Chen, Yuhuan ^{[1
]}

Qin, Dashan ^{[1
]}

Cheng, Cuiran ^{[1
]}

Quan, Wei ^{[1
]}

Chen, Lei ^{[1
]}

Li, Guifang ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Chem Engn, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2011年 / 26卷 / 09期

基金：

美国国家科学基金会;

关键词：

METAL-OXIDES; ARCHITECTURE;

D O I：

10.1088/0268-1242/26/9/095011

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two-unit tandem organic light emitting diodes (OLEDs) employing two kinds of interconnecting structures, i.e. 5 nm lithium carbonate doped PTCDA (1:2 Li2CO3:PTCDA)/5 nmMoO(3) and 5 nm Li2CO3 doped BCP (1:4 Li2CO3: BCP)/5 nm MoO3, have been fabricated, where PTCDA and BCP stand for 3, 4, 9, 10 perylenetetracarboxylic dianhydride and bathocuproine, respectively. Compared to the tandem OLED using the interconnecting structure of 5 nm 1:4 Li2CO3:BCP/5 nmMoO(3), the one utilizing 5 nm 1:2 Li2CO3:PTCDA/5 nmMoO(3) showed nearly same power efficiency and decreased operating voltage, mainly attributed to the higher electron conductivity of 1:2 Li2CO3:PTCDA relative to 1:2 Li2CO3:BCP. The charge generation and electron injection processes based on the interconnecting structure of 5 nm 1:2 Li2CO3:PTCDA/5 nmMoO(3) were also discussed. We provide a simple and effective connecting structure to enhance the current conduction for tandem OLEDs.

引用

页数：5

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