Size Dependence of the Electrical Characteristics of Silicon Nanoparticles
Therrien, Joel Mathew
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https://hdl.handle.net/2142/35264
Description
Title
Size Dependence of the Electrical Characteristics of Silicon Nanoparticles
Author(s)
Therrien, Joel Mathew
Issue Date
2002
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
silicon
nanoparticles
electrical characteristics
optoelectronics
weak confinement
strong confinement
dielectric constant
spectral
spectral sensitivity
STM
tunneling
mass model
resonate tunneling
Language
en
Abstract
We studied the electronic properties of silicon nanoparticles with sizes rang-
ing from 2.9 to 1 nm in diameter. Using a scanning tunneling microscope we
studied the electronic structure of the particles. Resonant tunneling through
hole states was observed when the samples were excited with light. The
energy levels of these hole states were matched to theoretical models and
the mass of the holes was determined. In addition, the Coulomb blockade
e ect was observed in the tunneling experiments. This e ect was used to
determine the dielectric constant of the particles. Both the hole mass and the dielectric constant are of importance to many fields, such as electronics, optoelectronics, and optics, where silicon nanoparticles have applications.
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