Stable Aqueous Based Cu Nanoparticle Ink for Printing Well-Defined Highly Conductive Features on a Plastic Substrate
2011; American Chemical Society; Volume: 27; Issue: 6 Linguagem: Inglês
10.1021/la104136w
ISSN1520-5827
AutoresSunho Jeong, Hae Chun Song, Won‐Woo Lee, Sun Sook Lee, Youngmin Choi, Wonil Son, Eui Duk Kim, Choon Hoon Paik, Seok Heon Oh, Beyong-Hwan Ryu,
Tópico(s)Advanced Sensor and Energy Harvesting Materials
ResumoWith the aim of inkjet printing highly conductive and well-defined Cu features on plastic substrates, aqueous based Cu ink is prepared for the first time using water-soluble Cu nanoparticles with a very thin surface oxide layer. Owing to the specific properties, high surface tension and low boiling point, of water, the aqueous based Cu ink endows a variety of advantages over conventional Cu inks based on organic solvents in printing narrow conductive patterns without irregular morphologies. It is demonstrated how the design of aqueous based ink affects the basic properties of printed conductive features such as surface morphology, microstructure, conductivity, and line width. The long-term stability of aqueous based Cu ink against oxidation is analyzed through an X-ray photoelectron spectroscopy (XPS) based investigation on the evolution of the surface oxide layer in the aqueous based ink.
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