Highly efficient organic light-emitting devices based on multifunctional nanoparticles

被引：4
|
作者：
Zhang, Dandan [1 ]
Tian, Yu [1 ]
Zou, Shijie [1 ]
Tang, Jianxin [1 ]
Li, Yanqing [1 ]
机构：
[1] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China
来源：
OPTICS LETTERS | 2019年 / 44卷 / 10期
基金：
中国国家自然科学基金;
关键词：
POLYMER SOLAR-CELLS; EXTRACTION EFFICIENCY; FE3O4; DIODES; LAYER;
D O I：
10.1364/OL.44.002462
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have constructed a new approach to realize the light extraction enhancement in organic light-emitting diodes (OLEDs) by using Fe3O4@Au nanoparticles (FOA NPs). The current efficiency of 97.8 cd/A at a luminance of 500 cd/m(2) can be obtained for the FOA-NP-based device, while it is only 61 cd/A for the control device without FOA NPs, corresponding a 60% enhancement in efficiency. The time-resolved photoluminescence and optical haze characterizations were performed to study the influence of FOA NPs on the lifetime of excitons and the light-scattering effect, respectively. These results reveal that the enhanced radical efficiency of an FOA-NP-based device is mainly ascribed to the localized surface plasmonic effects induced by Au NPs and the strong light-scattering effect related to FOA NPs, thereby achieving a double enhancement in light extraction, which paves a new way in realizing high-efficiency and controllable OLEDs. (C) 2019 Optical Society of America
引用
收藏
页码：2462 / 2465
页数：4
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