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Metallization For Crossbar Molecular Devices

J. Deng, W. Hofbauer, N. Chandrasekhar, S. O'Shea
Published 2007 · Materials Science

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Self-assembled organic monolayer nanopore crossbar junctions were fabricated as a test structure for molecular electronics. The device yield, which is typically very low due to electrical shorting on top electrode deposition, is studied for different deposition parameters, and a clear improvement (up to 45% yield) is obtained by indirect deposition of silver electrodes on cooled substrates. Nevertheless, the yield fluctuates strongly from run to run (~8% to ~45%), implying that reliable device fabrication remains challenging. We find a small number of devices (<1%) show switching behaviour in conductivity, presumably due to metal filaments.
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