Transparent conductive grids via direct writing of silver nanoparticle inks

Ahn, Byung Yoon; Lorang, D.; Lewis, Jennifer A.

doi:10.1039/c1nr10048c

Cited by 145 publications

(128 citation statements)

References 25 publications

Supporting

Mentioning

119

Contrasting

Unclassified

Order By: Relevance

“…We note that microscale metal wire array transparent electrodes have been reported previously 36,37 . However, the R s -T enhancement was not as prominent as our work.…”

Section: Resultsmentioning

confidence: 99%

Performance enhancement of metal nanowire transparent conducting electrodes by mesoscale metal wires

et al. 2013

View full text Add to dashboard Cite

For transparent conducting electrodes in optoelectronic devices, electrical sheet resistance and optical transmittance are two of the main criteria. Recently, metal nanowires have been demonstrated to be a promising type of transparent conducting electrode because of low sheet resistance and high transmittance. Here we incorporate a mesoscale metal wire (1-5 mm in diameter) into metal nanowire transparent conducting electrodes and demonstrate at least a one order of magnitude reduction in sheet resistance at a given transmittance. We realize experimentally a hybrid of mesoscale and nanoscale metal nanowires with high performance, including a sheet resistance of 0.36 O sq À 1 and transmittance of 92%. In addition, the mesoscale metal wires are applied to a wide range of transparent conducting electrodes including conducting polymers and oxides with improvement up to several orders of magnitude. The metal mesowires can be synthesized by electrospinning methods and their general applicability opens up opportunities for many transparent conducting electrode applications.

show abstract

“…We note that microscale metal wire array transparent electrodes have been reported previously 36,37 . However, the R s -T enhancement was not as prominent as our work.…”

Section: Resultsmentioning

confidence: 99%

Performance enhancement of metal nanowire transparent conducting electrodes by mesoscale metal wires

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Printed features with minimum electrode width of ~ 2 μm (1.4 μm thick) are obtained in a single pass using a 1-μm nozzle 11 . Figure 9 shows transparent conductive silver grids, patterned by a 5 μm nozzle on a flexible polyimide film 12 . The texts underneath the printed grids are clearly visible.…”

Section: Representative Resultsmentioning

confidence: 99%

Planar and Three-Dimensional Printing of Conductive Inks

Ahn¹,

Walker²,

Slimmer³

et al. 2011

JoVE

Self Cite

View full text Add to dashboard Cite

Printed electronics rely on low-cost, large-area fabrication routes to create flexible or multidimensional electronic, optoelectronic, and biomedical devices [1][2][3] . In this paper, we focus on one-(1D), two-(2D), and three-dimensional (3D) printing of conductive metallic inks in the form of flexible, stretchable, and spanning microelectrodes. Direct-write assembly4,5 is a 1-to-3D printing technique that enables the fabrication of features ranging from simple lines to complex structures by the deposition of concentrated inks through fine nozzles (~0.1 -250 μm). This printing method consists of a computer-controlled 3-axis translation stage, an ink reservoir and nozzle, and 10x telescopic lens for visualization. Unlike inkjet printing, a droplet-based process, directwrite assembly involves the extrusion of ink filaments either in-or out-of-plane. The printed filaments typically conform to the nozzle size. Hence, microscale features (< 1 μm) can be patterned and assembled into larger arrays and multidimensional architectures.In this paper, we first synthesize a highly concentrated silver nanoparticle ink for planar and 3D printing via direct-write assembly. Next, a standard protocol for printing microelectrodes in multidimensional motifs is demonstrated. Finally, applications of printed microelectrodes for electrically small antennas, solar cells, and light-emitting diodes are highlighted.

show abstract

“…A direct ink writing approach of concentrated silver inks has been shown by Ahn et al, demonstrating linewidths around 5 µm. [ 19 ] TCE of very high performance have been demonstrated by electrospinning of polymer nanowires followed by the metal evaporation resulting in nanotrough networks of various metals. [ 9 ] A similar procedure was used to fabricate a network of copper wires about 1 µm in diameter that can be transferred onto a fi ner mesh of solution-deposited nanowires.…”

mentioning

confidence: 99%

Electrohydrodynamic NanoDrip Printing of High Aspect Ratio Metal Grid Transparent Electrodes

Schneider

Rohner

Thureja

et al. 2015

Adv Funct Materials

240

255

View full text Add to dashboard Cite

833wileyonlinelibrary.com fi lm solar cells, and smart windows. [ 4 ] The main disadvantage of ITO is its limited optical performance at very low sheet resistances. Moreover, the brittleness of the ceramic ITO fi lms can present a bottleneck in the fabrication of highly fl exible devices. [ 5 ] These disadvantages have motivated recent research efforts toward alternative material systems such as carbon nanotube [ 6 ] or silver nanowire (AgNW) networks, [ 7,8 ] metallized electrospun nanowires, [ 9,10 ] graphene layers, [ 11 ] ultrathin metal fi lms, [ 12 ] self-forming [ 13 ] or patterned metal grids. [14][15][16][17][18][19][20] Ideally, besides having very good electrical and optical performance, the new system should be low cost, fl exible and include direct patterning. The former two can be achieved by the additive solution-processing of silver nanowire networks that show remarkable fl exibility. [ 8 ] Depending on the application, this method however requires a post deposition structuring step. Direct patterning can be implemented with metal-wire grid electrodes when considering suitable printing technologies. While grids have been realized with nanoscale lines in several studies, the fabrication relied on subtractive multistep patterning methods such as imprinting, [ 14,15,20 ] lithography, [ 15 ] or evaporative self-assembly. [ 16 ] For microscale line widths, although not completely additive, an elegant method using selective laser sintering of a silver or nickel nanoparticle fi lm has been presented by Hong et al. [ 17 ] and Lee et al., [ 18 ] respectively. A direct ink writing approach of concentrated silver inks has been shown by Ahn et al., demonstrating linewidths around 5 µm. [ 19 ] TCE of very high performance have been demonstrated by electrospinning of polymer nanowires followed by the metal evaporation resulting in nanotrough networks of various metals. [ 9 ] A similar procedure was used to fabricate a network of copper wires about 1 µm in diameter that can be transferred onto a fi ner mesh of solution-deposited nanowires. [ 10 ] However, this interesting method is neither additive nor does it have the ability for direct patterning.Electrohydrodynamic (EHD) printing, the technique used in this work, has been applied as a viable additive and noncontact printing technique. Conventional additive printing methods such as screen printing or inkjet printing simply lack the resolution needed for invisible metal grid TCE applications. Electrohydrodynamic NanoDrip Printing of High Aspect Ratio Metal Grid Transparent Electrodes

show abstract

Transparent conductive grids via direct writing of silver nanoparticle inks

Cited by 145 publications

References 25 publications

Performance enhancement of metal nanowire transparent conducting electrodes by mesoscale metal wires

Performance enhancement of metal nanowire transparent conducting electrodes by mesoscale metal wires

Planar and Three-Dimensional Printing of Conductive Inks

Electrohydrodynamic NanoDrip Printing of High Aspect Ratio Metal Grid Transparent Electrodes

Contact Info

Product

Resources

About