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.
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.
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.
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.
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.
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.
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....
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.
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.
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....
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.
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....
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.
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.
A semiconductor material has a resistivity lying between that of a conductor and that of an
insulator. However, in contrast to the granular materials used for resistors, a semiconductor
establishes its conduction properties through a complex quantum mechanical behavior within
a periodic array of semiconductor atoms, i.e., within a crystalline structure.
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
• A diode is a very useful non-linear device • It allows current to flow in one direction and prevents it flowing in the other
• When a positive voltage is applied across the diode then current will flow • The diode is said to be forward biased • When a negative voltage is applied then the diode is reverse biased and no current will flow
Diode Characteristic Curve
Forward Biased Diode
• A positive voltage is applied to circuit so current will flow • Diode effectively behaves like a short circuit when forward biased...
This book represents a unique collection of the latest developments in the rapidly developing world of semiconductor laser diode technology and applications. An international group of distinguished contributors have covered particular aspects and the book includes optimization of semiconductor laser diode parameters for fascinating applications.