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Magnetic nanoparticles/PEDOT:PSS composite hole-injection layer for efficient organic light-emitting diodes

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Abstract

A multifunctional solution-processed composite hole-injection layer (HIL), based on the blends of magnetic nanoparticles (NPs) Fe3O4@G–poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), Fe3O4@SiO2–PEDOT:PSS and Fe3O4@Au–PEDOT:PSS, was used for application in high performance tris-(8-hydroxyquinoline) aluminum-based organic light emitting diodes (OLEDs). Compared to the control devices, a significant increase in the current efficiency of OLEDs with a composite HIL was realized, achieving maximum luminous efficiencies of 5.13 cd A−1 (Fe3O4@G–PEDOT:PSS and Fe3O4@Au–PEDOT:PSS HIL), and of 4.83 cd A−1 (Fe3O4@SiO2–PEDOT:PSS HIL), corresponding to a 35% and 38.2% increase in current efficiency, respectively. The increase in the performance of the OLEDs is attributed to the collective effects of light-scattering, localized surface plasmon resonance (LSPR) and the magnetic effect induced by the magnetic NPs in the HIL.

Graphical abstract: Magnetic nanoparticles/PEDOT:PSS composite hole-injection layer for efficient organic light-emitting diodes

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Publication details

The article was received on 04 Dec 2017, accepted on 25 Feb 2018 and first published on 27 Feb 2018


Article type: Paper
DOI: 10.1039/C7TC05554D
Citation: J. Mater. Chem. C, 2018, Advance Article
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    Magnetic nanoparticles/PEDOT:PSS composite hole-injection layer for efficient organic light-emitting diodes

    H. Lian, Z. Tang, H. Guo, Z. Zhong, J. Wu, Q. Dong, F. Zhu, B. Wei and W. Wong, J. Mater. Chem. C, 2018, Advance Article , DOI: 10.1039/C7TC05554D

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