Silver nanowire-IZO-conducting polymer hybrids for flexible and transparent conductive electrodes for organic light-emitting diodes

Ho Jun Yun, Se Jung Kim, Ju Hyun Hwang, Yong Sub Shim, Sun Gyu Jung, Young Wook Park, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Solution-processed silver nanowire (AgNW) has been considered as a promising material for next-generation flexible transparent conductive electrodes. However, despite the advantages of AgNWs, some of their intrinsic drawbacks, such as large surface roughness and poor interconnection between wires, limit their practical application in organic light-emitting diodes (OLEDs). Herein, we report a high-performance AgNW-based hybrid electrode composed of indium-doped zinc oxide (IZO) and poly (3,4-ethylenediowythiophene):poly(styrenesulfonate) [PEDOT:PSS]. The IZO layer protects the underlying AgNWs from oxidation and corrosion and tightly fuses the wires together and to the substrate. The PEDOT:PSS effectively reduces surface roughness and increases the hybrid films' transmittance. The fabricated electrodes exhibited a low sheet resistance of 5.9 ωsq-1 with high transmittance of 86% at 550 nm. The optical, electrical, and mechanical properties of the AgNW-based hybrid films were investigated in detail to determine the structure-property relations, and whether optical or electrical properties could be controlled with variation in each layer's thickness to satisfy different requirements for different applications. Flexible OLEDs (f-OLEDs) were successfully fabricated on the hybrid electrodes to prove their applicability; their performance was even better than those on commercial indium doped tin oxide (ITO) electrodes.

Original languageEnglish
Article number34150
JournalScientific reports
Volume6
DOIs
Publication statusPublished - 2016 Oct 5

Bibliographical note

Funding Information:
This research was supported by the industry technology RandD program of MOTIE/KEIT (No. 10048317, Development of red and blue OLEDs with external quantum efficiency over 20% using delayed fluorescent materials), Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2012R1A6A3A04039396), the Technology Development of Low Cost Flexible Lighting Surface, which is a part of the RandD program of the Electronics and Telecommunications Research Institute (ETRI) and the Brain Korea 21 Plus Project (BK 21).

Publisher Copyright:
© The Author(s) 2016.

ASJC Scopus subject areas

  • General

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