Conjugated Conducting Polymers: v. 102 (Springer Series in Solid-State Sciences) - Hardcover

Hardcover

ISBN 10: 3540535942 ISBN 13: 9783540535942

Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. K, 1992

Synopsis

This book reviews the current understanding of electronic, optical and magnetic properties of conjugated polymers in both the semiconducting and metallic states. It introduces in particular novel phenomena and concepts in these quasi- one-dimensional materials that differ from the well-established concepts valid for crystalline semiconductors. After a brief introductory chapter, the second chapter presents basic theore- tical concepts and treats in detail the various models for n-conjugated polymers and the computational methods required to derive observable quantities. Specific spatially localized structures, often referred to as solitons, polarons and bipolarons, result naturally from the interaction between n-electrons and lattice displacements. For a semi-quantitative understanding of the various measure- ments, electron-electron interactions have to be incorporated in the models; this in turn makes the calculations rather complicated. The third chapter is devoted to the electrical properties of these materials. The high metallic conductivity achieved by doping gave rise to the expression conducting polymers, which is often used for such materials even when they are in their semiconducting or insulating state. Although conductivity is one of the most important features, the reader will learn how difficult it is to draw definite conclusions about the nature of the charge carriers and the microscopic transport mechanism solely from electrical measurements. Optical properties are discussed in the fourth chapter.

About this title

Synopsis

Polyconjugated polymers resemble inorganic semiconductors phenomenologically inasmuch as their optical gap is in the visible or near infrared and their conductiveity can be increased by several orders of magnitude by doping. However, the models describing the polymers differ from those for conventional semiconductors due to the polymers' quasi-one-dimensional structure. This text presents the various models of -conjugated polymers and the computational methods used to derive the experimentally measurable quantities. The electrical, optical and magnetic properties are described and interpretations of the experimental results are critically reviewed. Emphasis is placed on phenomena involving solitons, polarons, bipolarons, and the relative importance of the electron-phonon and electron-electron interaction. The discussion ranges from well-understood properties to those that still lack a satisfactory explanation.

Edition details

• Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. K
• Publication date: 1992
• Language: English
• ISBN 10: 3540535942
• ISBN 13: 9783540535942
• Binding: Hardcover
• Number of pages: 322
• Editor: Kiess Helmut