Tunable resistivity in ink-jet printed electrical structures on paper by plasma conversion of particle-free, stabilizer-free silver inks

Yongkun Sui, Souvik Ghosh, Christopher Miller, Daphne Pappas, R. Mohan Sankaran, Christian A. Zorman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Printable metal inks are typically composed of premade nanoparticles that require postdeposition thermal sintering to produce crystalline, electrically conductive features. In this paper, it is shown that particle-free Ag inks made from simple, water-soluble metal salts such as silver nitrate can be ink-jet printed and converted into electrical features with tunable resistivity at low temperature (<100 °C) by exposure to a pure argon plasma. X-ray diffraction confirms that the converted inks are crystalline, and four-point probe electrical measurements show that the sheet resistances are a function of the pressure and power in the plasma. From cross-sectional scanning electron microscopy analysis, it is found that the morphology of the converted silver layer becomes increasingly dense with increasing plasma treatment time, which explains the measured changes in sheet resistance, and that the thickness of the layer is ∼1.5 μm, which yields a minimum resistivity of ∼6 × 10−8 Ω m, approximately 3.8 times higher than bulk resistivity of silver. Interestingly, the resistivity can be varied over a span of 6 orders of magnitude which allows resistor-capacitor filter devices to be fabricated exhibiting varying cut-off frequencies from a single material and geometry.

Original languageEnglish (US)
Article number051302
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume36
Issue number5
DOIs
StatePublished - Sep 1 2018

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inks
Silver
Ink
silver
Plasmas
electrical resistivity
Sheet resistance
Metals
Crystalline materials
Silver Nitrate
silver nitrates
Argon
argon plasma
Cutoff frequency
resistors
Resistors
metals
electrical measurement
Nitrates
capacitors

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Tunable resistivity in ink-jet printed electrical structures on paper by plasma conversion of particle-free, stabilizer-free silver inks. / Sui, Yongkun; Ghosh, Souvik; Miller, Christopher; Pappas, Daphne; Mohan Sankaran, R.; Zorman, Christian A.

In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 36, No. 5, 051302, 01.09.2018.

Research output: Contribution to journalArticle

Sui, Yongkun ; Ghosh, Souvik ; Miller, Christopher ; Pappas, Daphne ; Mohan Sankaran, R. ; Zorman, Christian A. / Tunable resistivity in ink-jet printed electrical structures on paper by plasma conversion of particle-free, stabilizer-free silver inks. In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 2018 ; Vol. 36, No. 5.
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