Ballistic emission spectroscopy and imaging of a buried metal-organic interface
Cedric Troadec, Linda Kunardi, and N. Chandrasekhar
TL;DR
This study uses ballistic electron emission microscopy to explore a buried metal-organic interface, revealing multiple injection barriers, spatial nonuniformity, and no single barrier, with findings uncorrelated to surface topography.
Contribution
First application of BEEM to a buried metal-organic interface, uncovering complex injection barrier behavior and spatial nonuniformity.
Findings
Multiple injection barriers observed
Spatial nonuniformity over nanometer scales
No correlation between BEEM current images and surface topography
Abstract
The silver-p-phenylene (Ag-PPP) interface is investigated using ballistic electron emission microscopy (BEEM). Multiple injection barriers and spatial nonuniformity of carrier injection over nanometer length scales are observed. No unique injection barrier is found. Physical reasons for these features are discussed. BEEM current images and the surface topography of the silver film are uncorrelated.
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