their uses, cathode rays, positive rays and their properties, simple electronic devices, diodes properties, Oscilloscope T.V. tubes, band theory of solids LC, energy level diagrams for conductors, semi-conductors and insulators, doping, types of semiconductors: P-types and N-types, P-N junctions, rectifying property of a p-n junction, forward and reverse biasing, simple transistors and oscillator circuits. Others include n-p-and p-n, basic structures and terminologies and their applications, colour
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flow; used in some semiconductor diode circuits. 2. Incoherent Light: Light in which the electric and magnetic fields of photons are completely random in orientation. Incoherent light is typically emitted from light bulbs and LEDs. 3. Laser: Acronym for light amplification by stimulated emission of radiation. The laser produces a coherent source of light with a narrow beam and a narrow spectral bandwidth (about 2cm). Lasers in fiber optics are usually solid-state semiconductor types. Lasers are
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as in a natural semiconductor and the most abundant element. First we can say the most advantage of silicon computer chips is because it’s a semiconductor. Which means when the computer runs it acts more like a conductor. Which is why it keeps temperatures low while it runs the PC or laptop from burning your motherboard. This process is called doping. It’s like saying conductors make it hard to control an electric signal. While insulators block electric signals. Semiconductors can do mostly both
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Epitaxial Growth • Epitaxy means the growth of a single crystal film on top of a crystalline substrate. • For most thin film applications (hard and soft coatings, optical coatings, protective coatings) it is of little importance. • However, for semiconductor thin film technology it is crucial. Types of Epitaxy • Homoepitaxy – The film and the substrate are the same material. – Often used in Si on Si growth. – Epitaxially grown layers are purer than the substrate and can be doped independently
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results together with a few other researchers under the heading "Breaking News" on Wednesday at the Compound Semiconductor Integrated Circuits Symposium conference in San Diego. Herbert Zirath says that semiconductor materials development has enabled manufacture of circuits that can transmit high frequency signals with sufficiently high power. The circuits, which are made of the semiconductor material indium phosphide, are so small that a microscope is needed to
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1 Executive Summary In 1971, Michael Cowpland and Terry Matthews incorporated and formed the company Mitel. They achieved immediate success with products that were composed of semiconductors, while they also sold semiconductors. They quickly achieved market dominance in the communications sector. As the communications sector became increasingly regulated by government, some of Mitel’s major customers lost market share resulting in fewer sales for Mitel. This resulted in Mitel’s competitors advancing
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Case Analysis: Recruitment of a Star PROBLEM STATEMENT To recruit a suitable replacement for RSH’s star analyst Peter Thompson PESTC Analysis Political – Nil Economic:- * Increased shuffling of jobs. Social:- * The environment required rigid competencies, high stamina, great communication skills, and frequent client interaction. * The industry average retirement age was approximately 45 to 50. Technological:- * Intensive use of technologies in research
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head office is located in Seoul, South Korea. It operates in the Americas, Europe and Asia. The company manufactures and distributes consumer electronics, communication products, semiconductor products and home appliances. Its major products include home appliances, mobile devices, printers, LCD monitors and semiconductors (Datamonitor, 2011). Samsung’s sales revenue consistently increased from 121,294 billion won ($108 billion USD) in 2008 to 154,630 billion won ($138 billion USD) in 2010, and its
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WEEK 3 Lecture 2 Images from Chapter 2 Insulators Many ceramics Semiconductors Conductors Superconductors Alumina Diamond Inorganic Glasses Mica Polypropylene PVDF PET SiO2 Soda silica glass Borosilicate Amorphous As2Se3 Pure SnO2 Intrinsic Si Te Graphite NiCr Ag Metals Degenerately Doped Si Alloys Intrinsic GaAs 10-18 10-15 10-12 10-9 10-6 10-3 100 103 106 109 1012 Conductivity (½ m)-1 Range of conductivites exhibited by various materials
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Title: Organic Semiconductor for Flexible Electronics Name: Chunhung Huang Introduction: An organic semiconductor is an organic compound that possesses similar properties to inorganic semiconductors with hole and electron conduction layer and a band gap.4 Organic semiconductors differ from other organic material in that the molecules that they are made of have π conjugate bonds which allow electrons to move via π-electron cloud overlaps. Conduction mechanisms for organic semiconductor are mainly through
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