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Disordered Semiconductors: Physics and Applications
Pan Stanford Publishing Pte. Ltd, Nov 2010, Pages: 201
The concepts of translational symmetry and long-range order in atomic arrangement relating to single crystals are the pillars of modern solid state physics. However, single crystals are a very special case of the solid state. Long-range order is absent in most materials. Therefore, the future of solid state physics lies in developing a theory that would describe the different states of matter while including the theory of single crystals as a special case. Besides being of academic interest, materials without long-range order are important from the application point of view. Devices based on disordered semiconductors have very wide applications: electrophotographic printers and copiers, liquid crystal displays and monitors, optical discs, cheap solar cells and others. However, the peculiarities of disordered semiconductors call for new approaches to the device design compared with traditional single-crystal materials. For example, the absence of long-range order in structural network allows for applying new methods of properties control without any doping. Moreover, with a correct approach the so-called inherent disadvantages of disordered semiconductors can be used to the advantage of the devices. For example, low charge carrier mobility allows for combining the high resistivity of materials with photosensitivity in the visible part of the spectrum and for creating electrophotography equipment.
Key Features
- Links characteristic features of disordered semiconductors’ atomic and electronic structures to the device design process.
- Discusses methods of disordered semiconductor property control and thin-film preparation methods.
- Considers applications of disordered semiconductors in optical information storage and transmission devices and in photoelectric and electronic devices.
Readership
Students and researches in the fields of electrical and electronics engineering, nano-electronics, materials science and solid state physics.
About the Author
Anatoly Popov is professor and head of the Semiconductor Electronics Department at the Moscow Power Engineering Institute.
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