Simultaneous red-green-blue electroluminescent enhancement directed by surface plasmonic ＂far-field＂ of facile gold nanospheres  

作　　者：Xiaoyan Wu Yiqi Zhuang Zhongtao Feng Xuehong Zhou Yuzhao Yang Linlin Liu Zengqi Xie Xudong Chen Yuguang Ma 

机构地区：[1]Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou S 10640, China [2]Key Laboratory for Polymer Composite and Functional Material of Ministry of China, Sun Yat-sen University, Guangzhou 510275, China [3]Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China

出　　处：《Nano Research》2018年第1期151-162,共12页纳米研究（英文版）

摘　　要：Based on the ＂far-field＂ effect of surface plasma resonance, simultaneous red-green-blue electroluminescence enhancement by facile synthesized gold nanospheres were realized in this work, which would be difficult and complex to attain using wavelength-selected localized surface plasma resonance. The plasmonic ＂far-field＂ effect can simultaneously enhance the whole emission region in the white light range, because the enhancing regions from blue to red emission are largely overlapped. By doping gold nanospheres embedded in a poly（3,4-ethylene dioxythiophene）：polystyrene sulfonic acid （PEDOT：PSS） layer, yield enhancement is achieved in more than 95% devices with the best enhancing ratio of 60% and the commission International de UEclairage （CIE） coordinate is stable at approximately （0.33, 0.36）. The plasmonic ＂far-field＂ effect requires an ultra-low working concentration of Au NPs in picomolar magnitude, and shows little negative effect on the electronic process and light scattering, which has big potential in realizing highly efficient white organic light emitting diodes.Based on the ＂far-field＂ effect of surface plasma resonance, simultaneous red-green-blue electroluminescence enhancement by facile synthesized gold nanospheres were realized in this work, which would be difficult and complex to attain using wavelength-selected localized surface plasma resonance. The plasmonic ＂far-field＂ effect can simultaneously enhance the whole emission region in the white light range, because the enhancing regions from blue to red emission are largely overlapped. By doping gold nanospheres embedded in a poly（3,4-ethylene dioxythiophene）：polystyrene sulfonic acid （PEDOT：PSS） layer, yield enhancement is achieved in more than 95% devices with the best enhancing ratio of 60% and the commission International de UEclairage （CIE） coordinate is stable at approximately （0.33, 0.36）. The plasmonic ＂far-field＂ effect requires an ultra-low working concentration of Au NPs in picomolar magnitude, and shows little negative effect on the electronic process and light scattering, which has big potential in realizing highly efficient white organic light emitting diodes.

关 键 词：gold nanoparticles（Au NPs） ＂far-field＂ effect surface plasma resonance white organic lightemitting diodes 

分 类 号：TP333[自动化与计算机技术—计算机系统结构] O484[自动化与计算机技术—计算机科学与技术]