Printing electrode for top-contact molecular junction

Ojima, Kaoru; Otsuka, Yoichi; Matsumoto, Takuya; Kawai, Tomoji; Nakamatsu, Kenichiro; Matsui, Shinji
December 2005
Applied Physics Letters;12/5/2005, Vol. 87 Issue 23, p234110
Academic Journal
We have developed a fabrication method of electrodes for molecular electronics based on nanotransfer printing lithography using a release agent layer and without any surface modification. A gold layer deposited on a release agent layer coating a mold can transfer to the nonmodified surfaces of SiO2, sapphire, or organic layer. The printed electrode has a resistivity of 4×10-6 Ω cm which is close to the value of 2.1×10-6 Ω cm for bulk gold. The application of this process to top-contact type molecular junctions is demonstrated using carbon nanotubes and the electric potential distribution of the junctions is observed by Kelvin force microscopy.


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