| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1644312 | Materials Letters | 2014 | 4 Pages |
•Silver nanoparticle-based ink has been synthesised for directly printing silver films on paper substrates with inkjet printer.•Silver films can be sintered at room temperature by printing poly(diallyldimethylammonium chloride) solution.•The mechanism of room temperature sintering was proposed based on the electrical and the morphological properties of silver films.
Water-dispersible Ag nanoparticles (NPs) were synthesised with polyacrylic acid as capping agents and prepared as an Ag NP-based ink. An approach to achieve coalescence and sintering of Ag NPs at room temperature was presented. After inkjet printing Ag NP-based ink on paper substrates, the Ag NPs underwent spontaneous coalescence when they came into contact with a poly(diallyldimethylammonium chloride) (PDAC) solution even without a traditional sintering process. This phenomenon rapidly decreased the sheet resistance of the films. The room-temperature sintering mechanism was then proposed based on the electrical and the morphological properties of Ag films with and without PDAC solutions.
