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Articles

Suppression of the Coffee Ring Effect in a Single Solvent-Based Silicon Nanoparticle Ink

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By Joost Duvigneau, G. Julius Vancso, Fabian Langer, Sida Yin
| dx.doi.org
Silicon (Si) is made printable by dispersing Si nanoparticles in a single organic solvent. Viscoelastic properties of the prepared inks as well as the uniformity of inkjet-printed thin films are investigated in dependence on the Si volume fraction. It has been demonstrated that no ink additives are needed to completely suppress the occurrence of the coffee ring effect. This is obtained by increasing the ink’s volume fraction to induce gelation in order to generate elasticity.
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