J. Semicond. > Volume 39 > Issue 1 > Article Number: 015001

Inkjet printed large-area flexible circuits: a simple methodology for optimizing the printing quality

Tao Cheng 1, §, , Youwei Wu 1, §, , Xiaoqin Shen 1, , Wenyong Lai 1, 2, , and Wei Huang 1, 2,

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Abstract: In this work, a simple methodology was developed to enhance the patterning resolution of inkjet printing, involving process optimization as well as substrate modification and treatment. The line width of the inkjet-printed silver lines was successfully reduced to 1/3 of the original value using this methodology. Large-area flexible circuits with delicate patterns and good morphology were thus fabricated. The resultant flexible circuits showed excellent electrical conductivity as low as 4.5 Ω/□ and strong tolerance to mechanical bending. The simple methodology is also applicable to substrates with various wettability, which suggests a general strategy to enhance the printing quality of inkjet printing for manufacturing high-performance large-area flexible electronics.

Key words: inkjet printingflexible circuitspatterning resolutionlarge-area electronicsflexible electronics

Abstract: In this work, a simple methodology was developed to enhance the patterning resolution of inkjet printing, involving process optimization as well as substrate modification and treatment. The line width of the inkjet-printed silver lines was successfully reduced to 1/3 of the original value using this methodology. Large-area flexible circuits with delicate patterns and good morphology were thus fabricated. The resultant flexible circuits showed excellent electrical conductivity as low as 4.5 Ω/□ and strong tolerance to mechanical bending. The simple methodology is also applicable to substrates with various wettability, which suggests a general strategy to enhance the printing quality of inkjet printing for manufacturing high-performance large-area flexible electronics.

Key words: inkjet printingflexible circuitspatterning resolutionlarge-area electronicsflexible electronics



References:

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Tsuchiya A, Sugama H, Sunamoto T, et al. Low-loss and high-speed transmission flexible printed circuits based on liquid crystal polymer films. Electron Lett, 2012, 48(19): 1216

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Kuang M X, Wang L B, Song Y L. Controllable printing droplets for high-resolution patterns. Adv Mater, 2014, 26(40): 6950

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Cheng T, Zhang Y Z, Yi J P, et al. Inkjet-printed flexible, transparent and aesthetic energy storage devices based on PEDOT: PSS/Ag grid electrodes. J Mater Chem A, 2016, 4(36): 13754

[10]

Yang L, Cheng T, Zeng W J, et al. Inkjet-printed conductive polymer films for optoelectronic devices. Prog Chem, 2015, 27(11): 1615

[11]

Xing R B, Ye T L, Ding Y, et al. Thickness uniformity adjustment of inkjet printed light-emitting polymer films by solvent mixture. Chin J Chem, 2013, 31(11): 1449

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Gaspar C, Passoja S, Olkkonen J, et al. IR-sintering efficiency on inkjet-printed conductive structures on paper substrates. Microelectron Eng, 2016, 149: 135

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Xie L, Feng Y, Mäntysalo M, et al. Integration of f-MWCNT sensor and printed circuits on paper substrate. IEEE Sens J, 2013, 13(10): 3948

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Walker S B, Lewis J A. Reactive silver inks for patterning high-conductivity features at mild temperatures. J Am Chem Soc, 2012, 134(3): 1419

[15]

Noh Y Y, Zhao N, Caironi M, et al. Downscaling of self-aligned, all-printed polymer thin-film transistors. Nat Nanotech, 2007, 2(12): 784

[16]

Li Z, Wang J, Zhang Y, et al. Closed-air induced composite wetting on hydrophilic ordered nanoporous anodic alumina. Appl Phys Lett, 2010, 97(23): 233107

[17]

Kim J Y, Pfeiffer K, Voigt A, et al. Directly fabricated multi-scale microlens arrays on a hydrophobic flat surface by a simple ink-jet printing technique. J Mater Chem, 2012, 22(7): 3053

[18]

Galliker P, Schneider J, Eghlidi H, et al. Direct printing of nanostructures by electrostatic autofocussing of ink nanodroplets. Nat Commun, 2012, 3: 890

[1]

Cheng T, Zhang Y Z, Lai W Y, et al. Stretchable thin-film electrodes for flexible electronics with high deformability and stretchability. Adv Mater, 2015, 27(22): 3349

[2]

Chen J Y, Lau Y C, Coey J M, et al. High performance MgO-barrier magnetic tunnel junctions for fleixble and wearable spintronic applications. Sci Rep, 2017, 7: 42001

[3]

Li Q, Zhang L N, Tao X M, et al. Review of flexible temperature sensing networks for wearable physiological monitoring. Adv Healthcare Mater, 2017, 6(12): 1601371

[4]

Gao W, Emaminejad S, Nyein H Y Y, et al. Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature, 2016, 529(7587): 509

[5]

Yang J, Zhu K, Ran Y, et al. Joint Admission control and routing via approximate dynamic programming for streaming video over software-defined networking. IEEE Trans Multimed, 2017, 19(3): 619

[6]

He J W, Nuzzo R G, Rogers J A. Inorganic materials and assembly techniques for flexible and stretchable electronics. Proce IEEE, 2015, 103(4): 619

[7]

Tsuchiya A, Sugama H, Sunamoto T, et al. Low-loss and high-speed transmission flexible printed circuits based on liquid crystal polymer films. Electron Lett, 2012, 48(19): 1216

[8]

Kuang M X, Wang L B, Song Y L. Controllable printing droplets for high-resolution patterns. Adv Mater, 2014, 26(40): 6950

[9]

Cheng T, Zhang Y Z, Yi J P, et al. Inkjet-printed flexible, transparent and aesthetic energy storage devices based on PEDOT: PSS/Ag grid electrodes. J Mater Chem A, 2016, 4(36): 13754

[10]

Yang L, Cheng T, Zeng W J, et al. Inkjet-printed conductive polymer films for optoelectronic devices. Prog Chem, 2015, 27(11): 1615

[11]

Xing R B, Ye T L, Ding Y, et al. Thickness uniformity adjustment of inkjet printed light-emitting polymer films by solvent mixture. Chin J Chem, 2013, 31(11): 1449

[12]

Gaspar C, Passoja S, Olkkonen J, et al. IR-sintering efficiency on inkjet-printed conductive structures on paper substrates. Microelectron Eng, 2016, 149: 135

[13]

Xie L, Feng Y, Mäntysalo M, et al. Integration of f-MWCNT sensor and printed circuits on paper substrate. IEEE Sens J, 2013, 13(10): 3948

[14]

Walker S B, Lewis J A. Reactive silver inks for patterning high-conductivity features at mild temperatures. J Am Chem Soc, 2012, 134(3): 1419

[15]

Noh Y Y, Zhao N, Caironi M, et al. Downscaling of self-aligned, all-printed polymer thin-film transistors. Nat Nanotech, 2007, 2(12): 784

[16]

Li Z, Wang J, Zhang Y, et al. Closed-air induced composite wetting on hydrophilic ordered nanoporous anodic alumina. Appl Phys Lett, 2010, 97(23): 233107

[17]

Kim J Y, Pfeiffer K, Voigt A, et al. Directly fabricated multi-scale microlens arrays on a hydrophobic flat surface by a simple ink-jet printing technique. J Mater Chem, 2012, 22(7): 3053

[18]

Galliker P, Schneider J, Eghlidi H, et al. Direct printing of nanostructures by electrostatic autofocussing of ink nanodroplets. Nat Commun, 2012, 3: 890

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T Cheng, Y W Wu, X Q Shen, W Y Lai, W Huang, Inkjet printed large-area flexible circuits: a simple methodology for optimizing the printing quality[J]. J. Semicond., 2018, 39(1): 015001. doi: 10.1088/1674-4926/39/1/015001.

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History

Manuscript received: 29 July 2017 Manuscript revised: 02 October 2017 Online: Accepted Manuscript: 27 December 2017 Published: 01 January 2018

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