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Article Dans Une Revue Applied Surface Science Année : 2017

Rheology of cellulose nanofibrils/silver nanowires suspension for the production of transparent and conductive electrodes by screen printing

Résumé

With the aim of processing silver nanowires-based electrodes using screen printing process, this study proposes to evaluate the suitability of cellulose nanofibrils (CNF) as a thickening agent for providing a high viscosity silver nanowires screen printing ink. Rheology of CNF suspension has been specifically investigated according to screen printing process requirements using both rotational and oscillating rheology. It has been found that CNF indeed act as a thickener and stabilizer for the silver nanowires suspension. However, the solid dominant visco-elastic behavior of the CNF suspension was not suitable for screen printing and leads to defects within the printed film. CNF visco-elastic properties were modified by adding hydroxypropylmethyl cellulose (HPMC) to the suspension. Homogeneous transparent conductive layers have been obtained when using CNF-HPMC as a matrix for silver nanowires. The screen printed layers were characterized and performances of Rsh = 12 ± 5 Ω□−1 and T%500nm = 74,8% were achieved without any additional post-treatment to the film.
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Dates et versions

hal-03326849 , version 1 (26-08-2021)

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Fanny Hoeng, Aurore Denneulin, Nadège Reverdy-Bruas, Guillaume Krosnicki, Julien Bras. Rheology of cellulose nanofibrils/silver nanowires suspension for the production of transparent and conductive electrodes by screen printing. Applied Surface Science, 2017, 394, pp.160-168. ⟨10.1016/j.apsusc.2016.10.073⟩. ⟨hal-03326849⟩

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