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Research Article

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

Xiaoyan Wu1,3, Yiqi Zhuang1, Zhongtao Feng1, Xuehong Zhou1, Yuzhao Yang3, Linlin Liu1( ), Zengqi Xie1, Xudong Chen3, Yuguang Ma1( )
Institute of Polymer Optoelectronic Materials and DevicesState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou510640China
Key Laboratory for Polymer Composite and Functional Material of Ministry of ChinaSun Yat-sen UniversityGuangzhou510275China
Institute of Fluid PhysicsChina Academy of Engineering PhysicsMianyang621900China
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Graphical Abstract

Abstract

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 L'Eclairage (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.

Keywords

gold nanoparticles (Au NPs)"far-field" effectsurface plasma resonancewhite organic light emitting diodes

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Nano Research
Volume 11 Issue 1,
January 2018
Pages 151-162
DOI: 10.1007/s12274-017-1614-3
Cite this article:
Wu X, Zhuang Y, Feng Z, et al. Simultaneous red–green–blue electroluminescent enhancement directed by surface plasmonic "far-field" of facile gold nanospheres. Nano Research, 2018, 11(1): 151-162. https://doi.org/10.1007/s12274-017-1614-3

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Received: 29 December 2016
Revised: 05 April 2017
Accepted: 09 April 2017
Published: 08 June 2017
© Tsinghua University Press and Springer-Verlag GmbH Germany 2017
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