Robust Laminated Anode with an Ultrathin Titanium Nitride Layer for High-Efficiency Top-Emitting Organic Light-Emitting Diodes

被引:3
作者
Cai, Jia-Heng [1 ]
Tian, Qi-Sheng [1 ]
Zhu, Xiao-Zhao [1 ]
Qu, Zhi-Hao [1 ]
He, Wei [1 ]
Zhou, Dong-Ying [1 ]
Liao, Liang-Sheng [1 ,2 ]
机构
[1] Soochow Univ, Inst Funct Nano & Soft Mat, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
[2] Macau Univ Sci & Technol, Macao Inst Mat Sci & Engn, Taipa 999078, Macao, Peoples R China
来源
MOLECULES | 2022年 / 27卷 / 17期
基金
中国国家自然科学基金;
关键词
organic light-emitting diodes; bottom reflective anode; titanium nitride; complementary metal-oxide-semiconductor; microdisplays; WORK FUNCTION; LIQUID-CRYSTAL; TIN; EMISSION; DEVICES; ENHANCEMENT; GOLD;
D O I
10.3390/molecules27175723
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The effective reflective anode remains a highly desirable component for the fabrication of reliable top-emitting organic light-emitting diodes (TE-OLEDs) which have the potential to be integrated with complementary metal-oxide-semiconductor (CMOS) circuits for microdisplays. This work demonstrates a novel laminated anode consisting of a Cr/Al/Cr multilayer stack. Furthermore, we implement an ultra-thin titanium nitride (TiN) layer as a protective layer on the top of the Cr/Al/Cr composite anode, which creates a considerably reflective surface in the visible range, and meanwhile improves the chemical stability of the electrode against the atmosphere or alkali environment. Based on [2-(2-pyridinyl-N)phenyl-C](acetylacetonate)iridium(III) as green emitter and Mg/Ag as transparent cathode, our TE-OLED using the TiN-coated anode achieves the maximum current efficiency of 71.2 cd/A and the maximum power efficiency of 66.7 lm/W, which are 81% and 90% higher than those of the reference device without TiN, respectively. The good device performance shows that the Cr/Al/Cr/TiN could function as a promising reflective anode for the high-resolution microdisplays on CMOS circuits.
引用
收藏
页数:10
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