Fabrication of Highly Transparent and Flexible NanoMesh Electrode via Self-assembly of Ultrathin Gold Nanowires

Shu Gong; Yunmeng Zhao; Lim Wei Yap; Qianqian Shi; Yan Wang; Johanis Aryo P.B. Bay; Daniel T.H. Lai; Hemayet Uddin; Wenlong Cheng

doi:10.1002/aelm.201600121

Fabrication of Highly Transparent and Flexible NanoMesh Electrode via Self-assembly of Ultrathin Gold Nanowires

Shu Gong, Yunmeng Zhao, Lim Wei Yap, Qianqian Shi, Yan Wang, Johanis Aryo P.B. Bay, Daniel T.H. Lai, Hemayet Uddin, Wenlong Cheng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

109 Scopus citations

Abstract

Transparent electrodes simultaneously require high electrical conductivity and high optical transparency, which have been achieved with mesh metal structures. However, most currently fabricated micro- and nanoelectronic devices are produced via top-down lithography methods. Here, a bottom-up self-assembly approach to fabricate mesh electrode using ultrathin gold nanowires (AuNWs) at the air/water interface is reported. Slow partial ligand removal during the aging process is the key for the formation of such self-assembled mesh structures. The resulting mesh film has a typical mesh pore size of 8–52 μm, with a sheet resistance of ≈40 times smaller than our previously reported nonmeshed AuNWs electrodes under similar optical transmittance. Our self-assembled mesh electrodes are mechanically flexible, easily transferrable to a variety of substrates, and also patternable by marker pen lithography or cutting machine lithography, and washable, and can be directly used for touch screen and flexible interconnects for light-emitting devices. The entire fabrication process is under ambient conditions without the need for any special equipment. These attributes indicate the potential applications of self-assembled gold mesh electrodes in flexible solar cells, touch screen displays, and wearable electronics.

Original language	English
Article number	1600121
Journal	Advanced Electronic Materials
Volume	2
Issue number	7
DOIs	https://doi.org/10.1002/aelm.201600121
State	Published - 1 Jul 2016
Externally published	Yes

Keywords

flexible electronics
mesh structures
self-assembly
transparent electrodes
ultrathin gold nanowires

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10.1002/aelm.201600121

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title = "Fabrication of Highly Transparent and Flexible NanoMesh Electrode via Self-assembly of Ultrathin Gold Nanowires",

abstract = "Transparent electrodes simultaneously require high electrical conductivity and high optical transparency, which have been achieved with mesh metal structures. However, most currently fabricated micro- and nanoelectronic devices are produced via top-down lithography methods. Here, a bottom-up self-assembly approach to fabricate mesh electrode using ultrathin gold nanowires (AuNWs) at the air/water interface is reported. Slow partial ligand removal during the aging process is the key for the formation of such self-assembled mesh structures. The resulting mesh film has a typical mesh pore size of 8–52 μm, with a sheet resistance of ≈40 times smaller than our previously reported nonmeshed AuNWs electrodes under similar optical transmittance. Our self-assembled mesh electrodes are mechanically flexible, easily transferrable to a variety of substrates, and also patternable by marker pen lithography or cutting machine lithography, and washable, and can be directly used for touch screen and flexible interconnects for light-emitting devices. The entire fabrication process is under ambient conditions without the need for any special equipment. These attributes indicate the potential applications of self-assembled gold mesh electrodes in flexible solar cells, touch screen displays, and wearable electronics.",

keywords = "flexible electronics, mesh structures, self-assembly, transparent electrodes, ultrathin gold nanowires",

author = "Shu Gong and Yunmeng Zhao and Yap, {Lim Wei} and Qianqian Shi and Yan Wang and Bay, {Johanis Aryo P.B.} and Lai, {Daniel T.H.} and Hemayet Uddin and Wenlong Cheng",

note = "Publisher Copyright: {\textcopyright} 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2016",

month = jul,

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doi = "10.1002/aelm.201600121",

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AU - Gong, Shu

AU - Zhao, Yunmeng

AU - Yap, Lim Wei

AU - Shi, Qianqian

AU - Wang, Yan

AU - Bay, Johanis Aryo P.B.

AU - Lai, Daniel T.H.

AU - Uddin, Hemayet

AU - Cheng, Wenlong

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Transparent electrodes simultaneously require high electrical conductivity and high optical transparency, which have been achieved with mesh metal structures. However, most currently fabricated micro- and nanoelectronic devices are produced via top-down lithography methods. Here, a bottom-up self-assembly approach to fabricate mesh electrode using ultrathin gold nanowires (AuNWs) at the air/water interface is reported. Slow partial ligand removal during the aging process is the key for the formation of such self-assembled mesh structures. The resulting mesh film has a typical mesh pore size of 8–52 μm, with a sheet resistance of ≈40 times smaller than our previously reported nonmeshed AuNWs electrodes under similar optical transmittance. Our self-assembled mesh electrodes are mechanically flexible, easily transferrable to a variety of substrates, and also patternable by marker pen lithography or cutting machine lithography, and washable, and can be directly used for touch screen and flexible interconnects for light-emitting devices. The entire fabrication process is under ambient conditions without the need for any special equipment. These attributes indicate the potential applications of self-assembled gold mesh electrodes in flexible solar cells, touch screen displays, and wearable electronics.

AB - Transparent electrodes simultaneously require high electrical conductivity and high optical transparency, which have been achieved with mesh metal structures. However, most currently fabricated micro- and nanoelectronic devices are produced via top-down lithography methods. Here, a bottom-up self-assembly approach to fabricate mesh electrode using ultrathin gold nanowires (AuNWs) at the air/water interface is reported. Slow partial ligand removal during the aging process is the key for the formation of such self-assembled mesh structures. The resulting mesh film has a typical mesh pore size of 8–52 μm, with a sheet resistance of ≈40 times smaller than our previously reported nonmeshed AuNWs electrodes under similar optical transmittance. Our self-assembled mesh electrodes are mechanically flexible, easily transferrable to a variety of substrates, and also patternable by marker pen lithography or cutting machine lithography, and washable, and can be directly used for touch screen and flexible interconnects for light-emitting devices. The entire fabrication process is under ambient conditions without the need for any special equipment. These attributes indicate the potential applications of self-assembled gold mesh electrodes in flexible solar cells, touch screen displays, and wearable electronics.

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Fabrication of Highly Transparent and Flexible NanoMesh Electrode via Self-assembly of Ultrathin Gold Nanowires

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