High-fidelity formation of a molecular-junction device using a thickness-controlled bilayer architecture

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Gyeong Sook BangHyoyoung Lee

Abstract

The device yield of molecular junctions has become a major issue for the practical application of molecular electronics based on a crossbar system of a metal-molecule-metal (MMM) junction. As the thickness of self-assembled monolayers (SAMs) is typically 1-2 nm, it is difficult to avoid electrical shorts due to the penetration of top metal particles into the SAMs. A simple and effective strategy for the creation of a reliable molecular junction using a thickness-controlled bilayer with a bifunctional heterostructure is presented. In the MMM device, the Au adlayer on the molecular layer is spontaneously formed with deposition of the top Au metals and the sandwiched molecular layer maintains the quality of the SAMs. This method greatly reduces electrical shorts by preventing the diffusion of the top metal electrode and offsetting the surface roughness of the bottom metal electrode, resulting in a device yield of more than 90%.

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Citations

Dec 4, 2010·Journal of the American Chemical Society·Christian A NijhuisGeorge M Whitesides
Aug 17, 2011·Journal of the American Chemical Society·Christian A NijhuisGeorge M Whitesides
Jun 9, 2012·Journal of the American Chemical Society·Martin M ThuoGeorge M Whitesides
Nov 26, 2009·Journal of the American Chemical Society·Christian A NijhuisGeorge M Whitesides
Oct 2, 2009·Angewandte Chemie·Junghyun LeeHyoyoung Lee
Mar 17, 2016·Chemical Reviews·Dong XiangXuefeng Guo
Dec 1, 2010·Angewandte Chemie·Kim S WimbushAldrik H Velders
Aug 14, 2020·Physical Chemistry Chemical Physics : PCCP·James B DerrValentine I Vullev
Aug 20, 2010·Nano Letters·Christian A NijhuisGeorge M Whitesides

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