81. Semiconductors semiconductors. Table of Contents. http://matse1.mse.uiuc.edu/~tw/sc/sc.html

Semiconductors Table of Contents Acknowledgments Foreword Introduction What are Semiconductors? ... Post Script File NOTE: You must have Microsoft Word in order to view the Word 5.1 document properly. To download the document, just drag the link over to your desktop, and open it with Word. MAST Home Page

82. International Rectifier Manufacturer of power semiconductors (MOSFET, IBGT, Diodes and Thyristors). http://www.irf.com

Login/My Page Company Information Contact Us Employment PART SEARCH Search Buy Products Product Line Technical Information ... more... International Rectifier Named 2002 Innovation of the Year Award Finalist in Two Categories more... International Rectifier Introduces Standard Recovery Diodes with Improved Surge Capability in a New DO-5 Package more... Search Product Catalog and Datasheets Product Change Notices ... Technical Support Location: China Japan Privacy Statement

83. What Are Semiconductors? What are semiconductors? semiconductors can be pure elements, such as siliconor germanium, or compounds such as gallium arsenide or cadmium selenide. http://matse1.mse.uiuc.edu/~tw/sc/ware.html

What are Semiconductors? Semiconductors are materials which have a conductivity between conductors (generally metals) and nonconductors or insulators (such as most ceramics). Semiconductors can be pure elements, such as silicon or germanium, or compounds such as gallium arsenide or cadmium selenide. In a process called doping, small amounts of impurities are added to pure semiconductors causing large changes in the conductivity of the material. Due to their role in the fabrication of electronic devices, semiconductors are an important part of our lives. Imagine life without electronic devices. There would be no radios, no TV's, no computers, no video games, and poor medical diagnostic equipment. Although many electronic devices could be made using vacuum tube technology, the developments in semiconductor technology during the past 50 years have made electronic devices smaller, faster, and more reliable. Think for a minute of all the encounters you have with electronic devices. How many of the following have you seen or used in the last twenty-four hours? Each has important components that have been manufactured with electronic materials. microwave oven electronic balance video games radio television VCR watch CD player stereo computer lights air conditioner calculator telephone musical greeting cards diagnostic equipment clock refrigerator car security devices stove Advances in the field of electronics can continue to improve our lives. Learning about electronic materials can help you understand and be able to participate in the fields of communication, computers, medicine, the basic sciences and engineering. All of these fields use electronics extensively.

84. AMERICAN ELECTRONIC RESOURCE Distributor of electronic components including semiconductors, integrated circuits, connectors, capacitors, diodes and transistors. Specializes in obsolete ICs and hardto-find parts. Online searching, web site registration and watch service. http://www.aeri.com/

85. Arbeitsgruppe Experimentelle Halbleiterphysik Research on semicondunductors and semiconductor nanostructures, including ultrafast spectroscopy, spintronics, magnetic semiconductors and sample preparation and epitaxy. http://www.physik.uni-marburg.de/hlexp/

86. NSM Archive - Physical Properties Of Semiconductors Si, Silicon, Ge, - Germanium. GaP, - Gallium Phosphide, GaAs, - GalliumArsenide. InAs, - Indium Arsenide, C, - Diamond. GaSb, - Gallium Antimonide, http://www.ioffe.rssi.ru/SVA/NSM/Semicond/

Si - Silicon Ge - Germanium GaP - Gallium Phosphide GaAs - Gallium Arsenide InAs - Indium Arsenide C - Diamond GaSb - Gallium Antimonide InSb - Indium Antimonide InP - Indium Phosphide GaAs 1-x Sb x - Gallium Arsenide Antimonide Al x Ga 1-x ... As - Aluminium Gallium Arsenide InN - Indium Nitride AlN - Aluminium Nitride GaN - Gallium Nitride We are going to add new data for: Ga x In 1-x ... 1-y - Gallium Indium Arsenide Antimonide Ga x In 1-x ... P - Gallium Indium Phosphide Ga x In 1-x ... As - Gallium Indium Arsenide Ga x In 1-x ... Sb - Gallium Indium Antimonide InAs 1-x Sb x - Indium Arsenide Antimonide Ga x In 1-x ... 1-y - Gallium Indium Arsenide Phosphide BN - Boron Nitride This section is intended to systematize parameters of semiconductor compounds and heterostructures based on them. Such a WWW-archive has a number of advantages: in particular, it enables physicists, both theoreticians and experimentalists, to rapidly retrieve the semiconducting material parameters they are interested in. In addition, physical parameters - optical, electrical, mechanical, etc. - will be presented in the framework of the electronic archive for both the known and new semiconducting compounds. As the starting point in creating the database served the voluminous reference book "Handbook Series on Semiconductor Parameters"

87. Welcome To NOVASiC's Web Site ! Providing wafering and polishing services of high performance semiconductors and industrial crystals. http://perso.wanadoo.fr/inpact/

To provide state of the art wafering and polishing services of high performance semiconductors and industrial crystals to laboratories and industrial customers. concentrates on Silicon Carbide, Sapphire wafers and other related materials cutting and polishing of SiC began in 1997. Since then, the company has been actively involved in several French National and European SiC and related materials research programs, and has regularly participated in SEMI standards on Silicon Carbide. Thanks to its large scope of expertise and equipment, is able to offer a wide range of services on several different materials : Seed preparation for crystal growth Orientation, cutting, lapping Polishing and surface preparation for epitaxy or re-growth Wafer reclaim after defective epitaxy (SiC/SiC, GaN, AlGaN, InGaN ...) will work : Under contract for dedicated customer process development As a subcontractor, i.e. processing material provided by the customer If required, can also source the base material from commercial vendors and process it to customer's needs Site optimized for or Internet Explorer Version 4.0 or greater

88. VentureReporter.net: Every Deal. Every Detail. Instantly. 4. iWatt Raises $14,500,000 in Second Round Los Gatos, CA iWatt designs, developsand markets semiconductors that improve power supplies for computer http://venturereporter.net/results.asp?IndustryID=18

89. Welcome To DefconSolutioins.com A distributor to manufacturers specializing in obsolete hard to find ICs and semiconductors. Extensive online data base. http://www.defconsolutions.com/

Skip Flsh Intro

90. Hitachi Europe Ltd., Electronic Components Group Select an area. December 26, 2002. http://www.hitachi-eu.com/semiconductors/

91. TEM ANALYSIS: Experts In TEM Analysis Of Semiconductors-Splash Intro Page Specializing in TEM analysis of semiconductors for industry and academia. http://www.temanalysis.com/

TEM ANALYSIS is a company that provides world-class TEM analysis services for the semiconductor industry. BEST VIEWED AT 1024 X 768 RESOLUTION OR GREATER

92. JAFCO Ventures Investment focus communications, software, information services, systems/peripherals and semiconductors http://www.jafco.com/

JAFCO Ventures is a leading global venture capital firm focused on a balanced investment strategy in the IT sector. September 19, 2002 Sun Microsystems to acquire Pirus Networks more>>> September 4, 2002 GlassHouse Technologies Raises $6.4 million in Series B funding from return investor Sigma Partners, and new investors GrandBanks Capital and JAFCO Ventures. more>>> April 09, 2002 DEAL OF THE YEAR: Ocular Networks to Tellabs, $355 million... more>>> March 28, 2002 Crescent Networks and NTT-ME Sign Partnership for Japan Serivce Provider Market... more>>>

93. Schlumberger: Other Activities Path to Other Activities The Hub Schlumberger Organization http://www.slb.com/semiconductors

Market Solutions Information Technology Telecom Finance Transport Public Sector Login Indexed Schlumberger Content Other Activities Schlumberger Hub Schlumberger Organization NPTest The Test Systems, Probe Systems, Customer Service and SABER groups of Schlumberger Semiconductor Solutions are now known as NPTest, a wholly owned subsidiary of Schlumberger Limited. NPTest is a leading provider of advanced test and diagnostic systems and product-related engineering services to the semiconductor industry. Summary ... Verification Systems Schlumberger Verification Systems has been providing state of the art metrology systems to the Semiconductor industry for over 17 years. With advanced technology in CDSEMs and overlay registration measurement systems, Schlumberger has worked with industry leaders to provide solutions for the most advanced processes while aggressively developing next generation technology to meet the needs of tomorrow. Summary ... Schlumberger Water Services Schlumberger Water Services provides comprehensive water resource management services specializing in groundwater assessment, development, and management. Summary ...

94. X-FAB Semiconductor Foundries Mixed signal foundry experts in semiconductors. http://www.xfab.com/

95. Component Database Server semiconductors, including discretes, data sheets, and specifications. From Penn State. http://zeus.cedcc.psu.edu/

96. Semiconductors semiconductors. Metal charges. They're known as semiconductors, andthey first became interesting to physicists in the late 1920s. http://www.pbs.org/transistor/science/events/semics.html

Electrons Vacuum Tubes Conductors Quantum Mechanics Semiconductors Germanium Diodes The Point Contact Transistor ... The Chip Semiconductors Metal conducts electricity; rubber doesn't. Gold conducts electricity; Styrofoam doesn't. Most materials fall easily into one category or the other. Everyone knows, for example, that if you want a good wire you're going to make it out of copper, not plastic. But there's a whole group of materials that fall in between. Their conductivity is in between metals and insulators. And their conductivity can be modified transiently, by shining a light on them or injecting charges. They're known as semiconductors, and they first became interesting to physicists in the late 1920s. At first no one could figure out how they worked. Scientists once thought that certain atoms simply held onto their electrons more strongly than others. But as physicists got a better understanding of what an atom looked like, they understood what was really going on. Different kinds of atoms have different numbers of electrons swarming around them. These electrons can only sit in specific places around the atom. It's sort of like rows of seats in a theater-in-the-round: a few electrons get to sit in the first row around the stage, and when that's filled the next electrons sit in the next row and so on. Electrons in a filled row stay put just as in a theater it's harder to get out when you've got people sitting on each side of you. In an insulator, every row is completely filled. Consequently the electrons rarely move. No moving electrons means no electricity can pass through.

97. Semiconductor Test Equipment, Hesper Technologies, Inc. Microprocessor controlled automatic test system for classifying, analyzing, and testing semiconductors. Test stations, fixtures, and ATE software. http://home.earthlink.net/~hestech/

Welcome to Hesper Technologies ! About Hesper Technologies Our Products Our Services Used Equipment Contact us at: Hesper Technologies, Inc. 1608 Westmoreland Ave. Syracuse, NY 13210 Phone: Fax: E-mail: hestech@earthlink.net Last Modified: 08 Mar 2001 URL: http://home.earthlink.net/~hestech/index.html

98. A Brief Outline An Outline of a Research StrategyCategory Science Technology Chemical Engineering...... shallow traps in various types of semiconductors. Microwave Response due to LightInduced Changes in the Complex Dielectric Constant of semiconductors. http://www.chembio.uoguelph.ca/serguei/brief.htm

An Outline of a Research Strategy Current interests include such topics as transport and electric properties of monocrystalline and polycrystalline materials, including thin films effect of surface modification on charge carrier kinetics shallow traps in various types of semiconductors the effect of dopants on the energy and density subband gap states The main instrumental method is the Advanced Method of Transient Microwave Photoconductivity (AMTMP). This method permits simultaneous measurement of changes in a cavity resonance frequency and a quality factor after sample illumination. These changes are proportional to changes in a real and in imaginary parts of dielectric constant according to a cavity perturbation theory. Usually (but not always) conduction electrons cause a change in a material conductivity related to a change of cavity quality factor (photoconductivity). Trapped electrons cause a change in the real part of dielectric constant related to a shift of a resonance frequency (photodielectric effect).As a result, this unique registers both free and trapped electron kinetics. AMTMP, experimental

99. SAMC - Electronics Training Solutions Fully professional electronics training solutions for the electronics industry in mechatronics, semiconductors, IT and computing, and printed circuit assembly. http://www.samc.co.uk

100. Semiconductors. semiconductors. This site is under construction. Disclaimer The Diode;The Gunn Diode; The Pin Diode Intrinsic semiconductors. If http://www.hills2.u-net.com/electron/semicond/semicond.htm

Semiconductors. This site is under construction. Intrinsic Semiconductors Extrinsic Semiconductors Planar Transistor Manufacture Reverse Recovery Time ... The Pin Diode Intrinsic Semiconductors If a semiconductor crystal contains no impurities, the only charge carriers present are thos produced by thermal breakdown of the covalent bonds. The conducting properties are thus characteristic of the pure semiconductor. Such a crystal is termed an intrinsic semiconductor. Extrinsic Semiconductors If a semiconductor crystal contains n-type or p-type impurities, the conducting properties are chiefly due to the impurities. Such a crystal is termed an extrinsic semiconductor. Planar Transistor Manufacture When a silicon wafer is heated to about 1200 degrees Celsius in an atmosphere of water vapour or oxygen a skin of silicon dioxide forms on the surface. This skin is a most effective seal against the ingress of moisture at room temperatures and has made possible the method of manufacture of planar transistors which is described below. The slice is now exposed at a high temperature to a boron-rich atmosphere. The silicon dioxide coating protects the slice against diffusion of boron except at the exposed areas and here boron diffuses isotropically, i.e. horizontally under the protective coating as well as vertically into the crystal, thus forming a p-type base region. Other more precise ways of forming such a region have been developed, for example by ion implantation. This involves a sharply defined bombardment of the substrate by a beam from an ion gun which enables the active base area to be closely controlled in area and shape, a process which can be compared with precision etching. The slice is now returned to the oxidising atmosphere and a coating of silicon dioxide is formed over the base areas (and the rest of the slice) to give a cross-section similar to that shown in (c) below.

Page 5     81-100 of 182    Back | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  | Next 20