Microscopic Heterogeneities in the Electrical Properties of SiC as Studied with Single-Molecule Spectroscopy

Titelangaben

Bauer, M. ; Kador, Lothar:
Microscopic Heterogeneities in the Electrical Properties of SiC as Studied with Single-Molecule Spectroscopy.
In: The Journal of Physical Chemistry B. Bd. 107 (2003) Heft 51 . - S. 14301-14305.
ISSN 1520-5207
DOI: https://doi.org/10.1021/jp0364405

Volltext

Link zum Volltext (externe URL):

Abstract

We report on electric-field-tuning experiments of single chromophores in a transparent matrix on top of a microcrystalline layer of silicon carbide (SiC). Upon changes of the electric field strength, most single-molecule lines show a slow creeping behavior toward a new equilibrium position. We attribute the relaxations to slow charge rearrangements in the SiC on a (sub)microscopic scale. This interpretation is supported by atomic force and scanning electron microscopy images of the SiC surface, which show mosaic structures with a typical grain size of about 300 nm.