Structural and electronic properties of tin ternary oxides
File(s)
Permission to use images from a paper
Author(s)
Riedel, Caroline
Type
Thesis
Abstract
Metal oxides are one of the most important groups of materials with great technological
importance. The variety of their physical and chemical properties allows for a multitude
of applications unsurpassed by other material classes. Even though decades of research
have gone into the understanding of their properties and the development of new
materials there is still much to learn. This work aims to provide new insight into known
materials such as SnWO4 and SrSnO3 as well as to develop new materials (by doping)
to enhance the properties of the parent compounds. All materials investigated in this
thesis are Sn based ternary oxides with properties allowing for possible application as
photocatalysts or transparent conductive oxides. Therefore, in depth characterisation
with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning
electron microscope (SEM), transmission electron microscopy (TEM), and atomic force
microscopy (AFM) of bulk and thin film materials was undertaken.
The organisation of this thesis is as follows, Chapter 1 will give an introduction
into key areas regarding metal oxides as well as the structure of the metal oxides
investigated. Chapter 2 will provide the reader with background information, while
Chapter 3 describes the practical details of the experimental techniques used.
Chapter 4 presents results of the core levels and electronic structure of SnWO4 obtained
with soft and hard X-ray photoelectron spectroscopy. In chapter 5 the growth behaviour
of SrSnO3 as epitaxial thin films and possible effects this might have on the electronic
structure is investigated followed by the characterisation of Ru-doped SrSnO3 in
chapter 6. Chapter 7 focuses on the experimental verification of the theoretical work on
Pb-doped SnO2 and the study of both the core levels as well as the electronic structure
of Sn1-xPbxO2. The final chapter concludes this thesis and gives a summary of the
results as well as an outlook on future work.
importance. The variety of their physical and chemical properties allows for a multitude
of applications unsurpassed by other material classes. Even though decades of research
have gone into the understanding of their properties and the development of new
materials there is still much to learn. This work aims to provide new insight into known
materials such as SnWO4 and SrSnO3 as well as to develop new materials (by doping)
to enhance the properties of the parent compounds. All materials investigated in this
thesis are Sn based ternary oxides with properties allowing for possible application as
photocatalysts or transparent conductive oxides. Therefore, in depth characterisation
with X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning
electron microscope (SEM), transmission electron microscopy (TEM), and atomic force
microscopy (AFM) of bulk and thin film materials was undertaken.
The organisation of this thesis is as follows, Chapter 1 will give an introduction
into key areas regarding metal oxides as well as the structure of the metal oxides
investigated. Chapter 2 will provide the reader with background information, while
Chapter 3 describes the practical details of the experimental techniques used.
Chapter 4 presents results of the core levels and electronic structure of SnWO4 obtained
with soft and hard X-ray photoelectron spectroscopy. In chapter 5 the growth behaviour
of SrSnO3 as epitaxial thin films and possible effects this might have on the electronic
structure is investigated followed by the characterisation of Ru-doped SrSnO3 in
chapter 6. Chapter 7 focuses on the experimental verification of the theoretical work on
Pb-doped SnO2 and the study of both the core levels as well as the electronic structure
of Sn1-xPbxO2. The final chapter concludes this thesis and gives a summary of the
results as well as an outlook on future work.
Version
Open Access
Date Issued
2017-03
Date Awarded
2017-10
Copyright Statement
Attribution NoDerivatives 4.0 International Licence (CC BY-ND)
Advisor
Payne, David
McLachlan, Martyn
Sponsor
King Abdullah University of Science and Technology
Publisher Department
Materials
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)