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Semiconductor Diode Electrons
Semiconductor Diodes - Physics?
How to describe semiconductors in terms of resistance and free electrons?
How to describe n-type and p-type semiconductors?
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What is semiconductor diodes? Describe it..
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In electronics, a diode is a two-terminal electronic component that conducts electric current in only one direction. The term usually refers to a semiconductor diode, the most common type today. This is a crystalline block of semiconductor material connected to two electrical terminals. A vacuum tube diode (now little used except in some high-power technologies) is a vacuum tube with two electrodes; a plate and a cathode.
The most common function of a diode is to allow an electric current to pass in one direction (called the diode's forward direction) while blocking current in the opposite direction (the reverse direction). Thus, the diode can be thought of as an electronic version of a check valve. This unidirectional behavior is called rectification, and is used to convert alternating current to direct current, and to extract modulation from radio signals in radio receivers.
However, diodes can have more complicated behavior than this simple on-off action, due to their complex non-linear electrical characteristics, which can be tailored by varying the construction of their P-N junction. These are exploited in special purpose diodes that perform many different functions. For example, specialized diodes are used to regulate voltage (Zener diodes), to electronically tune radio and TV receivers (varactor diodes), to generate radio frequency oscillations (tunnel diodes), and to produce light (light emitting diodes).
A modern semiconductor diode is made of a crystal of semiconductor like silicon that has impurities added to it to create a region on one side that contains negative charge carriers (electrons), called n-type semiconductor, and a region on the other side that contains positive charge carriers (holes), called p-type semiconductor. The diode's terminals are attached to each of these regions. The boundary within the crystal between these two regions, called a PN junction, is where the action of the diode takes place. The crystal conducts conventional current in a direction from the p-type side (called the anode) to the n-type side (called the cathode), but not in the opposite direction.
For How to describe semiconductors in terms of resistance and free electrons?
Kindly refer to http://en.wikipedia.org/wiki/Semiconductor.
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Electrons and Phonons in Semiconductor Multilayers $136.64 No Synopsis Available |
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Laser Diode Microsystems $301.11 Laser Diode Microsystems provides the reader with the basic knowledge and understanding required for using semiconductor laser diodes in optical microsystems and microoptical electromechanic systems. This tutorial addresses the fundamentals of semiconductor laser operation and design, coupled with an overview of the types of laser diodes suitable for use in Microsystems, along with their distinguishing characteristics. Emphasis is placed on laser diode characterization and measurement as well as the assembly techniques and optical accessories required for incorporation of semiconductor lasers into complex microsystems. Equipped with typical results and calculation examples, this handon text helps readers to develop a feel for how to choose a laser diode, characterize it and incorporate it into a microsystem. Author: Zappe, Hans P./ Zappe, H. Series Title: Microtechnology and Mems (Hardcover) Binding Type: Hardcover Number of Pages: 355 Publication Date: 2003/10/10 Language: English Dimensions: 9.21 x 6.14 x 0.81 inches |
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Low Dimensional Semiconductor Structures $232.6 LowDimensional Semiconductor Structures offers a seamless, atomstodevices introduction to the latest quantum heterostructures. It covers their fabrication; electronic, optical, and transport properties; role in exploring new physical phenomena; and utilization in devices. The authors describe the epitaxial growth of semiconductors and the physical behavior of electrons and phonons in lowdimensional structures. They then go on to discuss nonlinear optics in quantum heterostructures. The final chapters deal with semiconductor lasers, mesoscopic devices, and highspeed heterostructure devices. The book contains many exercises and comprehensive references. Author: Barnham, Keith/ Vvedensky, Dimitri Binding Type: Hardcover Number of Pages: 408 Publication Date: 2001/07/12 Language: English Dimensions: 10.12 x 7.02 x 1.00 inches |
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Rate Equations in Semiconductor Electronics $58.93 This is a novel approach to teaching dynamic aspects of the operation of semiconductor and optoelectronic devices. The traditional approach emphasizes an understanding of the steady equilibrium operation. However, dynamic aspects often determine the steady state conditions and the dynamical operation is of increasing importance as modern methods of communicating data and information require electronic devices that switch electrical or optical signals at ever faster rates. The opening chapter considers a number of simple problems, several drawn from daily experience, where the rates of movement can be used to determine equilibrium states. The remainder of the book concentrates on specific problems in semiconductor physics: the rates at which transistors and diodes can switch, and the rates at which electrons and holes can interact with photons, and photons with photons. Author: Carroll, John E./ Carroll, J. E. Binding Type: Paperback Number of Pages: 192 Publication Date: 1990/03/30 Language: English Dimensions: 9.12 x 6.12 x 0.49 inches |
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Semiconductor Lasers I (Hardcover) $256.23 This book covers the device physics of semiconductor lasers in five chapters written by recognized experts in this field. The volume begins by introducing the basic mechanisms of optical gain in semiconductors and the role of quantum confinement in modern quantum well diode lasers. Subsequent chapters treat the effects of built-in strain, one of the important recent advances in the technology of these lasers, and the physical mechanisms underlying the dynamics and high speed modulation of these devices. The book concludes with chapters addressing the control of photon states in squeezed-light and microcavity structures, and electron states in low dimensional quantum wire and quantum dot lasers. The book offers useful information for both readers unfamiliar with semiconductor lasers, through the introductory parts of each chapter, as well as a state-of-the-art discussion of some of the most advanced semiconductor laser structures, intended for readers engaged in research in this field. This book may also serve as an introduction for the companion volume, Semiconductor Lasers II: Materials and Structures, which presents further details on the different material systems and laser structures used for achieving specific diode laser performance features.* Introduces the reader to the basics of semiconductor lasers* Covers the fundamentals of lasing in semiconductors, including quantum confined and microcavity structures* Beneficial to readers interested in the more general aspects of semiconductor physics and optoelectronic devices, such as quantum confined heterostructures and integrated optics* Each chapter contains a thorough introduction to the topic geared toward the non-expert, followed by an in-depth discussion of current technology and future trends* Useful for professionals engaged in research and development* Contains numerous schematic and data-containing illustrations |
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Male Figure in Atom with Electrons $24.99 Eric Kamp Male Figure in Atom with Electrons - Photographic Print |
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High Power Diode Lasers: Technology and Applications $511.65 This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips. Author: Bachmann, Friedrich/ Loosen, Peter/ Poprawe, Reinhart Series Title: Springer Series in Optical Sciences Series Number: 128 Binding Type: Paperback Number of Pages: 560 Publication Date: 2010/11/29 Language: English Dimensions: 9.21 x 6.14 x 1.14 inches |
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DIODE $12 When these electrical items fail there is little choice but to renew - With this genuine Suzuki par.. |
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Semiconductor (Reissue) $14.99 Semiconductor (Reissue) |
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Pushing Electrons $14 No Synopsis Available |
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Polarized Electrons $160.88 No Synopsis Available |
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The Interference of Electrons $25.79 No Synopsis Available |
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Nanoelectronic Modeling Lecture 22: NEMO1D - Motivation, History and Key Insights - Part 1/2
What is a RECTIFIER?..And What is the Use of DIODE in it?
I knw about n-type and p-type semiconductors.
When elements of 14th grp doped with 13 grp elemnts- p-type
when elemnts of 14th grp doped with 15 grp elmnts - n-typpe
n-type= electron rich
p-type-electron deficient.
"Rectifier" is an older term for diode. It converts an alternating current into a pulsating "direct current" by allowing the current to flow in only one direction.
The semiconductor material (silicon, Si, or germanium, Ge) in a diode is doped with other elements (or compounds) to provide either extra electrons or "holes" for the electrons. Often this is gallium, Ga, which has three valence electrons and provides holes or arsenic, As, which has five valence electrons and provides an extra electron.
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