Optoelectronic devices are being developed at an extraordinary rate. Organic light emitting diodes, photovoltaic devices and electro-optical modulators are pivotal to the future of displays, photosensors and solar cells, and communication technologies. This book details the theories underlying the relevant mechanisms in organic materials and covers, at a basic level, how the organic components are made.

The first part of this book introduces the fundamental theories used to detail ordered solids and localised energy levels. The methods used to determine energy levels in perfectly ordered molecular and macromolecular systems are discussed, making sure that the effects of quasi-particles are not missed. The function of excitons and their transfer between two molecules are studied, and the problems associated with interfaces and charge injection into resistive media are presented.

The second part details technological aspects such as the fabrication of devices based on organic materials by dry etching. The principal characterisation techniques are highlighted. Specific attention is paid to the use of organic light emitting diodes in visual displays, the conversion of photons into electricity in photovoltaic cells, and the electro-optical modulation of signals in communication and information technologies.

Professor André Moliton is the Director of the " Unité de Microélectronique, Optoélectronique et Polymères " (UMOP - CNRS FRE 2701) at the Université de Limoges, France. The translator, Dr Roger C. Hiorns, is a post-doc at the Laboratoire de Physico-Chimie des Polymères at the Université de Pau et des Pays de l'Adour, France.

Autorentext

Professor André Moliton is the Director of the Unité de Microélectronique, Optoélectronique et Polymères at the Université de Limoges, France. The translator, Dr Roger C Hiorns, is a post-doc at the Laboratoire de Physico-Chimie des Polymères at the Université de Pau et des Pays de l'Adour, France.

Klappentext

Optoelectronic devices are currently being developed at an extraordinary rate. Organic light-emitting diodes, photovoltaic devices and electro-optical modulators are pivotal to the future of displays, photosensors and solar cells, and communication technologies. This book details the theories underlying the mechanisms involved in the relevant organic materials and covers, at a basic level, how the organic components are made.

The first part of the book introduces the fundamental theories used to describe ordered solids and goes onto detail on concepts applicable to localised energy levels. Then the methods used to determine energy levels particular to perfectly ordered molecular and macromolecular systems are discussed along with a detailed consideration of the effects of quasi-particles. The function of excitons and their transfer between two molecules is studied and, in addition, the problems associated with interfaces and charge injection into resistive media are presented.

More technological aspects are covered in the second part, which details the actual methods used to fabricate devices based on organic materials, such as dry etching. The principal characterisation techniques are also highlighted. Specific attention is paid to visual displays using organic light-emitting diodes; the conversion of photons into electrical energy (the photovoltaic effect); and for communications and information technologies, the electro-optical modulation of signals.

Inhalt

Part I: The concepts: Electronic structure and band structure of 1D periodic solids.- Electronic structure and band structure of 3D periodic or disordered solids: localized and delocalised states.- Electronic structure and band structure of « perfect » organic solids.- Electronic structure and band structure of « real » organic solids.- Electronic transport: I- Conduction in delocalised, localized and polaronic states.- Electronic transport: II - Injection and transport mechanisms in resistive medium.- Optical processes in solids; molecular and macromolecular medium. Part II: The devices: Fabrication processes and characterization of some polymeric or molecular devices.- The various optoelectronic sources: comparison between technologies and visualization applications. The part of organic materials and structures.- The organic light emitting diodes (OLEDs).- The organic photovoltaic devices.- Non-linear optical properties of conjugated polymers; applications to electro-optic modulators.