Dip-pen-based direct writing of conducting silver dots

作者：Gilles Sandra; Tuchscherer Andre; Lang Heinrich; Simon Ulrich^*

来源：Journal of Colloid and Interface Science, 2013, 406: 256-262.

DOI：10.1016/j.jcis.2013.05.047

• Dip-pen nanolithography
• Metal carboxylate
• Ink matrix
• Metal structures
• Conductivity measurements
• Printable electronics
• Molecular ink
• Metal precursor

Direct fabrication of micro- and nanoscale metallic structures is advantageous for many applications. Here, we use dip-pen lithography with silver(l) carboxylate [AgO2C(CH2OCH2)(3)H] in diethylene glycol as precursor ink for the generation of conducting metal structures. After annealing the written dots, solid silver structures are generated. We investigate the influence of several parameters such as substrate functionalization and ink composition on the pattern formation. We found that a substrate coating with perfluorinated silane is necessary, if diethylene glycol will be used as ink carrier. By variation in ink concentration and ink carrier composition, structures with diameters ranging from similar to 20 mu m to similar to 2 mu m and with metal fractions ranging from similar to 5% to similar to 80% were fabricated. After gold enhancement of the written patterns, resistivities in the range of 4 x 10(-5) Omega m on the structures were determined. The ink system introduced here appears promising for the direct fabrication of various metal or metal oxide patterns.

• 出版日期2013-9-15