Semiconductor

Since the mid-20th Century the electronics industry has enjoyed phenomenal growth and is now the largest industry in the world. The foundation of the electronics industry is the semiconductor device. To meet the tremendous demand of this industry, the semiconductor-device field has also grown rapidly. Coincident with this growth, the semiconductor-device literature has expanded and diversified.

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Introduction: The modern interest for phenomena at the semiconductor–electrolyte interface dates back to experiments performed in the 1950s with germanium, and has extended to most semiconducting materials for reasons of fundamental knowledge or potential application, going from semiconductor processing technology to heterogeneous photocatalysis to sensors. The subject is highly interdisciplinary and involves fields like electrochemistry, solid-state physics, and surface science.

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This chapter presents the basic theory and characteristics of stimulated emission and optical amplification gain in semiconductors. The former is the mostimportant principlethat enablessemiconductorlaserstobeimplemented, and the latter is the most important parameter for analysis of the laser performances. First, stimulated emission in semiconductors is explained, and then quantum theory analysis and statistic analysis using the density matrix of the optical amplification gain are given.

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Since the first edition of this handbook, semiconductor technology has gone through a continued evolution of new devices and materials like never before. Wafer sizes continue to grow with most of the new fabs equipped for 12-inch wafers. The changes are triggered by many considerations: continued need to provide more functions at lower cost; technology features less than 1000 Å requiring new processes, and exponential increase in the number of device elements.

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This book consists of a collection of review chapters that summarize the recent progress in the areas of metal and semiconductor nanosized crystals (nanocrystals). The interest in the optical properties of nanoparticles dates back to Faraday’s experiments on nanoscale gold. In these experiments, Faraday noticed the remarkable dependence of the color of gold particles on their size. The size dependence of the optical spectra of semiconductor nanocrystals was first discovered much later (in the 1980s) by Ekimov and coworkers in experiments on semiconductor-doped glasses.

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Semiconductor lasers are among the most important optoelectronics devices. Remarkable development has been accomplished in the three decades since the first achievement in room-temperature continuous oscillation, which opened the possibility of practical applications of semiconductor lasers. Today, various types of semiconductor lasers are mass-produced and widely used as coherent light sources for a variety of applications, including optical fiber communication systems and optical disk memory systems....

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The increasing demand on ultra miniturized electronic devices for ever improving performances has led to the necessity of a deep and detailed understanding of the mathematical theory of charge transport in semiconductors.

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Semiconductor nanostructures are currently one of the largest and most exciting areas in solid state physics. Low-dimensional electron systems (realized in semiconductor quantum structures) are particularly appealing because they allow one to study many-particle effects in reduced dimensions. Inelastic light scattering gives direct access to the elementary excitations of those systems.

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Semiconductor lab gồm các bài thực hành thí nghiệm dụng cụ bán dẫn – Kit Elvis II. Đây là tài liệu thí nghiệm Điện hữu ích cho các bạn sinh viên ngành Điện và những ai quan tâm đến vấn đề trên. Tham khảo nội dung tài liệu để nắm bắt nội dung chi tiết.

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Semiconductor detectors, structures, materials and engineering processes for Semiconductor detectors, Principles of operation and applications of Semiconductor detectors,... invite you to refer

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The Hall effect is studied theoretically in a doped semiconductor superlattice (DSSL) subjected to a crossed dc electric field and magnetic field in the presence of an intense electromagnetic wave (EMW). By using the quantum kinetic equation for electrons interacting with acoustic phonons at low temperature, we obtain expressions for the magnetoresistance as well as the Hall coefficient in dependence on the external fields and characteristic parameters of the DSSL. Analytical results are numerically evaluated for the GaAs:Si/GaAs:Be DSSL.

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We consider a model of III-V diluted magnetic semiconductors where both of the exchange interaction between carrier and impurity spins, and the direct exchange interaction between magnetic impurities are taken into account. The magnetization as a function of temperature for a wide range of model parameters is calculated and discussed. We show that for a degenerate carrier system the suppression of the magnetization is sensitive to the antiferromagnetic coupling constant and the impurity concentration.

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The Yukawa - like screening potential is suggested to describe the effect of environment on the binding energy of an exciton in the monolayer semiconductor WS2. The FK Operator Method combined with the Levi-Civita transformation is used to retrieve energies for the states of n= 1, 2, 3 which agree with experimental data.

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Chất bán dẫn (tiếng Anh: Semiconductor) là vật liệu trung gian giữa chất dẫn điện và chất cách điện. Chất bán dẫn hoạt động như một chất cách điện ở nhiệt độ thấp và có tính dẫn điện ở nhiệt độ phòng. Gọi là "bán dẫn" (chữ "bán" theo nghĩa Hán Việt có nghĩa là một nửa), có nghĩa là có thể dẫn điện ở một điều kiện nào đó, hoặc ở một điều kiện khác sẽ không dẫn điện....

3p phungnhi2011 18-03-2010 391 144   Download

semiconductors.In the first category are substances which provide an easy path for an electric current. All metals are conductors, however some metals do not conduct well. Manganin, for example, is a poor conductor. Copper is a good conductor, therefore it is widely used for cables. A non-metal which conducts well is carbon. Salt water is an example of a liquid conductor. A material which does not easily release electrons is called an insulator. Rubber, nylon, porcelain and air are all insulator. There are no perfect insulators.

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Power Electronics and Motor Drives including content: introduction and Perspective, power Semiconductor Devices, phase-Controlled Converters and Cycloconverters, voltage-Fed Converters and PWM Techniques, current-Fed Converters, electrical Machines for Variable-Speed Drives, induction Motor Drives, synchronous Motor Drives, computer Simulation and Digital Control.

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Based on the development plan, the IC's function and performance are first decided, and the logic circuit is designed. During logic circuit design, a logic circuit diagram is drawn to determine the electronic circuit required for the requested function. Once the logic circuit diagram is complete, simulations are performed multiple times to test the circuit’s operation. If there is no issue with the operation, the actual layout pattern for the devices and the interconnects is designed by computer-aided design(CAD), and a mask pattern is drawn....

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Introduction 1 Ideal Diode 1 Semiconductor Materials 3 Energy Levels 6 Extrinsic Materials—n- and p-Type 7 Semiconductor Diode 10 Resistance Levels 17 Diode Equivalent Circuits 24 Diode Specification Sheets 27 Transition and Diffusion Capacitance 31 Reverse Recovery Time 32 Semiconductor Diode Notation 32 Diode Testing 33 Zener Diodes 35 Light-Emitting Diodes (LEDs) 38 Diode Arrays—Integrated Circuits 42 PSpice Windows 43

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With technology advancements in semiconductor devices such as insulated gate bipolar transistors (IGBTs) and gate commutated thyristors (GCTs), modern highpower medium voltage (MV) drives are increasingly used in petrochemical, mining, steel and metals, transportation and other industries to conserve electric energy, increase productivity and improve product quality. Although research and development of the medium voltage (2.3 KV to 13.8 KV) drive in the 1-MW to 100-MW range are continuously growing, books dedicated to this technology seem unavailable.

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DRAM Cell ObservationDRAM Cell Observations.1T DRAM requires a sense amplifier for each bit line, due to charge redistribution read-out.DRAM memory cells are single ended in contrast to SRAM cells.The read-out of the 1T DRAM cell is destructive; read and refresh operations are necessary for correct operation.

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