Alignment of Silver Nanowires for Stretchable Electrodes (doi:10.21979/N9/MKUVTG)

View:

Part 1: Document Description
Part 2: Study Description
Part 5: Other Study-Related Materials
Entire Codebook

Alignment of Silver Nanowires for Stretchable Electrodes

doi:10.21979/N9/MKUVTG

DR-NTU (Data)

2020-04-24

1

Hu, Hebing, 2020, "Alignment of Silver Nanowires for Stretchable Electrodes", https://doi.org/10.21979/N9/MKUVTG, DR-NTU (Data), V1

Alignment of Silver Nanowires for Stretchable Electrodes

doi:10.21979/N9/MKUVTG

Hu, Hebing (Nanyang Technological University)

JPEG

Academic Research Fund Tier one RG200/17

Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme

DR-NTU (Data)

Hu, Hebing

Hu, Hebing

2020-04-24

https://doi.org/10.21979/N9/MKUVTG

Chemistry, Chemistry, transparent electrode, stretchability

Transparent conductors (TCs) for the next generation of soft electronic devices need to be highly stretchable, conductive and transparent; while inevitable challenge lies in enhancing them simultaneously. Cost effective silver nanowires (AgNWs) were widely used but the conventional random network gives high junction resistance as well as the degraded conductivity at stretched state. Here a novel, facile and versatile agitation-assisted assembly approach is reported to control the orientation direction and density of AgNWs and to Layer-by-Layer deposit the AgNWs monolayer or multilayers onto the pre-strained soft substrate. Such electrode gives the unprecedented low sheet resistance of 2.8 Ω sq-1 as well as high transparency of 85% and high stretchability of 40%. It is interesting to note that contrary to most other reports, such device shows higher conductivity at the stretched state compared to the released state.

JPEG IMAGES,

10.1039/C9CS00382G

Hu, H., Wang, S., Feng, X., Pauly, M., Decher, G., & Long, Y. (2020). In-plane aligned assemblies of 1D-nanoobjects: recent approaches and applications. Chemical Society Reviews, 49(2), 509-553.

10356/138414

Hu, H., Wang, S., Feng, X., Pauly, M., Decher, G., & Long, Y. (2020). In-plane aligned assemblies of 1D-nanoobjects: recent approaches and applications. Chemical Society Reviews, 49(2), 509-553.

Label:

Figure 1.jpg

Text:

a) Schematic illustration of the Layer-by-Layer agitation-assisted alignment. The silver nanowire thin films show a crossed aligned nanostructure at the stretched state and a tangled oriented structure at the released state. b) SEM image of the monolayer assembled AgNWs. (Insert: sheet resistance measured from the orientation direction and the orthogonal direction). c) SEM image of the 10 mins sample after second layer of assembly at the stretched state. d) SEM image of the 10 mins sample at the released state.

image/jpeg

Label:

Figure 2.jpg

Text:

SEM images (a, b, c) and orientation-color-coded pictures (d, e, f) and angular distribution (g, h, i) of AgNWs thin films oriented at the speeds of 200 rpm (a, d, g), 500 rpm (b, e, h) and 800 rpm (c, f, i). The inset in picture d) corresponds to the color code for orientation. j) Influence of the agitation speed on the order parameter. k) Influence of the percentage of ethylene glycol in water on the order parameter.

image/jpeg

Label:

Figure 3.jpg

Text:

a) Transmittances of the 10 mins sample applied with different strain. b) Photographs of the 10 mins sample at different strains (These electrodes were imaged using red flowers as the background). c) Transmittances at 550 nm as function of different coating times. d) Sheet resistance of the samples as function of different strain (dot line: stretching samples; solid line: releasing samples). e) Conductive properties of sample in comparison with the reported result from the literature. f) Simulation and experimental results of the transmittance of the stretchable electrode at different strain. (Insert: Simulation models of the random AgNWs network and mesh-like AgNWs network). g) Sheet resistance of the 30 mins sample at the released state and stretched state as a function of the number of cycles of stretching for 40%.

image/jpeg

Label:

Figure 4.jpg

Text:

a) Transient temperature evolution of the electrode under zero strain at stepwise voltage rise from 1 to 10 V. b) Temperature rise profile at different voltage for electrode coated with AgNWs for 30 mins in each layer. c) Transient temperature evolution of the electrode stepwise rise from 2 to 6 V at a constant strain. d) Time dependent temperatures at the surfaces of the AgNWs based electrode.

image/jpeg

Label:

Figure 5.jpg

Text:

a) Sheet resistance, stretchability and optical transmittance at 550 nm for oriented AgNWs electrodes with previously reported electrodes including AgNWs,[9, 11-14, 58-61] AgNWs@Graphene,[62] Ag mesh,[63] Ag nanofiber,[64] Au-Ag core-shell nanowires,[15] CuNWs,[65, 66] Cu@Cu4Ni,[52] CNT,[16, 17] CNT mesh,[18] CNT embroidered graphene,[67] graphene,[19, 20, 68] Au nanotrough,[69] Au nanomesh[70] and CuZr nanotrough.[71] for comparison. The designed oriented AgNWs films exhibit relatively lower sheet resistance, higher or comparable transparency and stretchability simultaneously. b) Photograph of the illuminated LED biased at 3 V with our AgNWs based electrode at the released state (left); photograph of the illuminated LED biased at 3 V using our AgNWs based electrode when it was stretched for 40% (right). c) Photograph of the illuminated LED biased at 3 V using our AgNWs based electrode when it was bended for about 180º.

image/jpeg