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Full Description
Ideal resource for learning about the fundamentals of organic semiconductors and their device applications with minimal prior knowledge
Assuming only basic knowledge of excitations in molecules and semiconductors, Electronic Processes in Organic Semiconductors comprehensively explains the electronic structure of organic semiconductors, the flow of charges and the nature of excited states, and the intricacies of the electronic and optical processes. The text is complemented by feature boxes detailing aspects that may be trivial to one group of readers yet fully unknown another, as the book is intended for chemists, physicists, material scientists, engineers and biologists alike.
The book is structured into four chapters. Chapter one introduces the reader to basic concepts of molecular photophysics. Chapter two explores how interactions between chromophores affect charges and excited states. Chapter three delineates the processes that are relevant to optoelectronic devices. Chapter four discusses how charge carrier transport, recombination and exciton dissociation can be employed in the operation of organic semiconductor devices.
This newly revised and updated Second Edition responds to the development of novel material classes and the increase in bioelectronic applications. It reflects the advanced insight on electronic structure, charge transport, excitonic processes and the key role played by film morphology in this.
Sample topics covered in Electronic Processes in Organic Semiconductors include:
Electronic, vibrational, and spin factors in transitions between molecular states
Experimental methods to study charge transport and excited states, comprising spectroscopic techniques as well as device-based measurements
Mechanisms of charge generation and transport in undoped and doped systems
Properties of excitations in single-compound materials, donor-acceptor systems and host-guest systems
Basics of device fabrication for solar cells, light-emitting diodes and transistors, operational principles, performance assessment and approaches for further improvement
Written in a way that makes understanding of organic semiconductors easy even for the uninitiated, the Second Edition of Electronic Processes in Organic Semiconductors continues to be the go-to resource for students intending to learn about organic semiconductors. It also serves as key reference for scientists from adjacent fields that need information on a particular aspect of organic semiconductors.
Contents
1 The Electronic Structure of Organic Semiconductors
1.1 Introduction
1.2 Different Organic Semiconductor Materials
1.3 Electronic States of a Molecule
1.4 Transitions between Molecular States
1.5 Spectroscopic Methods
1.6 Further Reading
References
2 Charges and Excited States in Organic Semiconductors
2.1 Excited Molecules from the Gas Phase to the Amorphous Film
2.2 Excited Molecules in Crystalline Phases -
The Frenkel Exciton
2.3 Excited States in pi-Conjugated Polymers
2.4 Charged Molecules
2.5 A Comparison between Inorganic and Organic Semiconductors
2.6 Further Reading
References
3 Electronic and Optical Processes of Organic Semiconductors
3.1 Basic Aspects of Electrical Current in a Device
3.2 Charge Injection Mechanisms
3.3 Charge Carrier Transport
3.4 Non-Geminate Charge Carrier Recombination
3.5 Generation of Excitations
3.6 Dissociation of Excitations
3.7 Di¿usion of Excitations
3.8 Decay of Excitations
3.9 Further Reading
References
4 Fundamentals of Organic Semiconductor Devices
4.1 Basic Solar Cells and Light-Emitting Diode Structures
4.2 Solar Cell Performance
References
Chemical Structures
A.1 Selected Polymers
A.1.1 pi-Conjugated Homopolymers
A.1.2 pi-Conjugated Copolymers
A.1.3 Other Polymers of Interest
A.2 Selected pi-Conjugated Low-Molecular Weight Compounds
A.3 Selected Phosphorescent Compounds
A.4 Non-Conjugated Low-Molecular Weight Compounds
