1.2 Contents of the Following Chapters
5
these strategies are also given for concrete material systems. In Chap. 4, various
methods of measuring work function are given with both their physical principles
and technical issues.
From Chaps. 5–7, band alignment at the interface is discussed on the basis of
the relationship with the work function. In Chap. 5, band alignment is handled as
an ideal case, where the modification of the work function directly controls the
band alignment. The relationship between the band alignment and the work function
in general, and concrete examples of band alignment modification via tuning of
the work function are given. In Chap. 6, cases where the relationship between the
band alignment and the work function is not ideal are discussed. Here, although the
relationship is not ideal, a linear relationship with the work function is obtained in
many cases. A correlation factor for the linear relationship is introduced, which is
determined by the dielectric property of the material in contact. Chapter 7 discusses
band alignment with interface-specific cases. By extending the idea that the work
function is surface-sensitive, either an appropriate interface terminating species or the
insertion of a very thin layer that can be regarded as having only a surface and no bulk
is adopted to modify the band alignment. Some concrete examples are also given.
Practically, the former technique is extensively adopted in the field of compound
semiconductors and the latter technique is used in organic semiconductor fields. The
relationship between the chapters of this book is summarized in Fig. 1.5.
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Fig. 1.5 Relationship between the chapters of the book
5
these strategies are also given for concrete material systems. In Chap. 4, various
methods of measuring work function are given with both their physical principles
and technical issues.
From Chaps. 5–7, band alignment at the interface is discussed on the basis of
the relationship with the work function. In Chap. 5, band alignment is handled as
an ideal case, where the modification of the work function directly controls the
band alignment. The relationship between the band alignment and the work function
in general, and concrete examples of band alignment modification via tuning of
the work function are given. In Chap. 6, cases where the relationship between the
band alignment and the work function is not ideal are discussed. Here, although the
relationship is not ideal, a linear relationship with the work function is obtained in
many cases. A correlation factor for the linear relationship is introduced, which is
determined by the dielectric property of the material in contact. Chapter 7 discusses
band alignment with interface-specific cases. By extending the idea that the work
function is surface-sensitive, either an appropriate interface terminating species or the
insertion of a very thin layer that can be regarded as having only a surface and no bulk
is adopted to modify the band alignment. Some concrete examples are also given.
Practically, the former technique is extensively adopted in the field of compound
semiconductors and the latter technique is used in organic semiconductor fields. The
relationship between the chapters of this book is summarized in Fig. 1.5.
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Fig. 1.5 Relationship between the chapters of the book