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Preparation and Characterization of Organic Silver Precursors for Conductive Ink

Authors: Wendong Yang, Changhai Wang, Valeria Arrighi


Low ink sintering temperature is desired for flexible electronics, as it would widen the application of the ink on temperature-sensitive substrates where the selection of silver precursor is very critical. In this paper, four types of organic silver precursors, silver carbonate, silver oxalate, silver tartrate and silver itaconate, were synthesized using an ion exchange method, firstly. Various characterization methods were employed to investigate their physical phase, chemical composition, morphologies and thermal decomposition behavior. It was found that silver oxalate had the ideal thermal property and showed the lowest decomposition temperature. An ink was then formulated by complexing the as-prepared silver oxalate with ethylenediamine in organic solvents. Results show that a favorable conductive film with a uniform surface structure consisting of silver nanoparticles and few voids could be produced from the ink at a sintering temperature of 150 °C.

Keywords: Conductive ink, electrical property, film, organic silver.

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[1] S. B. Walker, and J. A. Lewis, “Reactive silver inks for patterning high-conductivity features at mild temperatures,” J. Am. Chem. Soc, vol. 134, no. 3, pp. 1419–1421, Jan. 2012.
[2] Y. Chang, D. Y. Wang, Y. L Tai, and Z. G. Yang, “Preparation, characterization and reaction mechanism of a novel silver-organic conductive ink,” J. Mater. Chem, vol. 22, no. 48, pp. 25296–25301, Oct. 2012.
[3] C. N. Chen, T. Y. Dong, T. C. Chang, M. C. Chen, H. L. Tsai, and W. S. Hwang, “Solution-based β-diketonate silver ink for direct printing of highly conductive features on a flexible substrate.” J. Mater. Chem, vol. 1, no. 33, pp. 5161–5168, Jun. 2013.
[4] X. L. Nie, H. Wang, and J. Zou, “Inkjet printing of silver citrate conductive ink on PET substrate” Appl. Sur. Sci, vol.261, pp. 554–560, Aug. 2012.
[5] W. D. Yang, C. Y. Liu, Z. Y. Zhang, Y. Liu, and S. D. Nie, “One step synthesis of uniform organic silver ink drawing directly on paper substrates.” J. Mater. Chem, vol. 22, no. 43, pp. 23012–23016, Sep. 2012.
[6] J. Mei, M. R. Lovell, and M. H. Mickle, “Formulation and processing of novel conductive solution inks in continuous inkjet printing of 3-D electric circuits.” IEEE transactions on electronics packaging manufacturing, vol. 28, no. 3, pp. 265–273, Sep. 2005.
[7] A. L. Dearden, P. J. Smith, D.-Y. Shin, N. Reis, B. Derby, and P. O'Brien, “A low curing temperature silver ink for use in ink-jet printing and subsequent production of conductive tracks,” Macromol. Rapid Commun, vol.26, no.4, pp. 315–318, Feb. 2005.
[8] S. F. Jahn, T. Blaudeck, R. R. Baumann, A. Jakob, P. Ecorchard, T. Ruffer, H. Lang, and P. Schmidt, “Inkjet printing of conductive silver patterns by using the first aqueous particle-free MOD ink without additional stabilizing ligands.” Chem. Mater., vol. 22, no. 10, pp. 3067–3071, Apr. 2010.
[9] Y. Tao, B. Wang, L. Wang, and Y. Tai, “A facile approach to a silver conductive ink with high performance for macroelectronics.” Nanoscale Res Lett, vol. 8, no. 1, pp 2013, 8, pp. 296, Jun. 2013.
[10] Y. Dong, X. Li, S. Liu, Q. Zhu, M. Zhang, J. G. Li, and X. Sun, “Optimizing formulations of silver organic decomposition ink for producing highly-conductive features on flexible substrates: The case study of amines.” Thin Solid Films, vol. 616, pp. 635–642, Sep. 2016.
[11] K. Black, S. Jetinder, M. Danielle, S. Sarah, J. C. Sutcliffe, and R. P. Paul, “Silver ink formulations for sinter-free printing of conductive films.” Scientific reports, vol. 6, pp. 20814, Feb. 2016.