Five-minute synthesis of silver nanowires and their roll-to-roll processing for large-area organic light emitting diodesElectronic supplementary information (ESI) available. See DOI: 10.1039/c8nr02242a

Silver (Ag) nanowires (NWs) are promising building blocks for flexible transparent electrodes, which are key components in fabricating soft electronic devices such as flexible organic light emitting diodes (OLEDs). Typically, Ag NWs have been synthesized using a polyol method, but it still remains a...

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Main Authors: Sim, Hwansu, Kim, Chanho, Bok, Shingyu, Kim, Min Ki, Oh, Hwisu, Lim, Guh-Hwan, Cho, Sung Min, Lim, Byungkwon
Format: Article
Language:English
Online Access:Get full text
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Summary:Silver (Ag) nanowires (NWs) are promising building blocks for flexible transparent electrodes, which are key components in fabricating soft electronic devices such as flexible organic light emitting diodes (OLEDs). Typically, Ag NWs have been synthesized using a polyol method, but it still remains a challenge to produce high-aspect-ratio Ag NWs via a simple and rapid process. In this work, we developed a modified polyol method and newly found that the addition of propylene glycol to ethylene glycol-based polyol synthesis facilitated the growth of Ag NWs, allowing the rapid production of long Ag NWs with high aspect ratios of about 2000 in a high yield (∼90%) within 5 min. Transparent electrodes fabricated with our Ag NWs exhibited performance comparable to that of an indium tin oxide-based electrode. With these Ag NWs, we successfully demonstrated the fabrication of a large-area flexible OLED with dimensions of 30 cm × 15 cm using a roll-to-roll process. Silver nanowires can be rapidly synthesized by introducing propylene glycol into ethylene glycol-based polyol synthesis and applied to roll-to-roll process for large-area organic light emitting diodes.
ISSN:2040-3364
2040-3372
DOI:10.1039/c8nr02242a