Metal Organic interfaces at the nanoscale

Details Metal Organic interfaces at the nanoscale Metal Organic interfaces at the nanoscale

2005-01-04

arxiv.org/abs/cond-mat/0501039v1

Nanotechnology 15 (2004) 1818-1824

Physics

Condensed Matter

Materials Science

Scientific paper

10.1088/0957-4484/15/12/022

In this work, we present an investigation of the Ag-PPP (polyparaphenylene) interface using ballistic electron emission microscopy. Our work is the first successful application of the BEEM technique to metal-organic interfaces. We observe nanometer scale injection inhomogeneities. They have an electronic origin, since we find corresponding Schottky barrier variations. We also determine the transmission function of Ag-PPP interface and find that it agrees qualitatively with the theoretical calculations for a metal-phenyl ring interface. We conclude that charge transport across inhomogeneous barriers needs to be considered for understanding electronic transport across metal-organic interfaces and organic device characteristics.

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