Ii-vi Semiconductor Compounds


Book Description

Contents: X-Ray Characterisation of II-VI Semiconductor Materials (D Gao et al.)Electronic Structure of II-VI Semiconductors and Their Alloys (S-H Wei)Radiative Recombination Processes in Rare Earth Doped II-VI Materials (M Godlewski et al.)Nonlinear Optical Properties of Heavily Doped CdS (U Neukirch)Nanostructures of Broad Gap (II,Mn) VI Semiconductors (W Heimbrodt & O Goede)Co-Based II-VI Semimagnetic Semiconductors (A Twardowski et al.)Photoluminescence and Raman Scattering of ZnSe-ZnTe Strained Layer Superlattices (K Kumazaki)Novel Electronic Processes in Mercury-Based Superlattices (J R Meyer et al.)Strain, Pressure and Piezoelectric Effects in Strained II-VI Superlattices and Heterostructures (E Anastassakia)Electronic Structures of Strained II-VI Superlattices (T Nakayama)Devices and Applications of II-VI Compounds (S Colak)Solar Cells Based on II-VI Semiconductors (H Uda)ZnSe and Its Applications for Blue-Light Laser Diodes (M Pessa & D Ahn)Molecular Beam Epitaxy of HgCdTe for Electro-Optical Infrared Applications (J M A Cortés)and other papers Readership: Condensed matter physicists and electronic engineers. keywords:




Widegap II–VI Compounds for Opto-electronic Applications


Book Description

This book is intended for readers desiring a comprehensive analysis of the latest developments in widegap II-VI materials research for opto-electronic applications and basic insight into the fundamental underlying principles. Therefore, it is hoped that this book will serve two purposes. Firstly, to educate newcomers to this exciting area of physics and technology and, secondly, to provide specialists with useful references and new insights in related areas of II-VI materials research. The motivation for preparing this book originated from the need for a current review of this fertile and important field. A primary goal of this book is therefore to present an eclectic synthesis of these sometimes diverse fields of investigation. This book consists of three main sections, namely (1) Growth and Properties, (2) Materials Characterization and (3) Devices. Part One presents an overall perspective of the state of the art in the preparation of the widegap II-VI materials. Part Two concentrates on current topics pertinent to the characterization of these materials from the unique perspective of each of the authors. Part Three focuses on advances in the opto-electronic applications of these materials. The material in this section runs the gamut from addressing recent advances in device areas which date back to some of the earliest reported research in these materials, to tackling some quite new and exciting future directions.




Properties of Aluminium Gallium Arsenide


Book Description

The alloy system A1GaAs/GaAs is potentially of great importance for many high-speed electronics and optoelectronic devices, because the lattice parameter difference GaAs and A1GaAs is very small, which promises an insignificant concentration of undesirable interface states. Thanks to this prominent feature, a number of interesting properties and phenomena, such as high-mobility low-dimensional carrier gases, resonant tunnelling and fractional quantum Hall effect, have been found in the A1GaAs/GaAs heterostructure system. New devices, such as modulation-doped FETs, heterojunction bipolar transistors, resonant tunnelling transistors, quantum-well lasers, and other photonic and quantum-effect devices, have also been developed recently using this material system. These areas are recognized as not being the most interesting and active fields in semiconductor physics and device engineering.




Vapor Crystal Growth and Characterization


Book Description

The book describes developments in the crystal growth of bulk II-VI semiconductor materials. A fundamental, systematic, and in-depth study of the physical vapor transport (PVT) growth process is the key to producing high-quality single crystals of semiconductors. As such, the book offers a comprehensive overview of the extensive studies on ZnSe and related II-VI wide bandgap compound semiconductors, such as CdS, CdTe, ZnTe, ZnSeTe and ZnSeS. Further, it shows the detailed steps for the growth of bulk crystals enabling optical devices which can operate in the visible spectrum for applications such as blue light emitting diodes, lasers for optical displays and in the mid-IR wavelength range, high density recording, and military communications. The book then discusses the advantages of crystallization from vapor compared to the conventional melt growth: lower processing temperatures, the purification process associated with PVT, and the improved surface morphology of the grown crystals, as well as the necessary drawbacks to the PVT process, such as the low and inconsistent growth rates and the low yield of single crystals. By presenting in-situ measurements of transport rate, partial pressures and interferometry, as well as visual observations, the book provides detailed insights into in the kinetics during the PVT process. This book is intended for graduate students and professionals in materials science as well as engineers preparing and developing optical devices with semiconductors.




Multinary Alloys Based on II-VI Semiconductors


Book Description

A companion volume to Ternary Alloys Based on II-VI Semiconductor Compounds (CRC Press, 2013) and Quaternary Alloys Based on II-VI Semiconductor Compounds (CRC Press, 2014), Multinary Alloys Based on II-VI Semiconductors provides up-to-date experimental and theoretical information on phase relations based on II-VI semiconductor systems with five or




Properties of Semiconductor Alloys


Book Description

The main purpose of this book is to provide a comprehensive treatment of the materials aspects of group-IV, III−V and II−VI semiconductor alloys used in various electronic and optoelectronic devices. The topics covered in this book include the structural, thermal, mechanical, lattice vibronic, electronic, optical and carrier transport properties of such semiconductor alloys. The book reviews not only commonly known alloys (SiGe, AlGaAs, GaInPAs, and ZnCdTe) but also new alloys, such as dilute-carbon alloys (CSiGe, CSiSn, etc.), III−N alloys, dilute-nitride alloys (GaNAs and GaInNAs) and Mg- or Be-based II−VI semiconductor alloys. Finally there is an extensive bibliography included for those who wish to find additional information as well as tabulated values and graphical information on the properties of semiconductor alloys.




II-VI Semiconductor Materials and their Applications


Book Description

II-VI Semiconductor Materials and Their Applications deals with II-VI compound semiconductors and the status of the two areas of current optoelectronics applications: blue-green emitters and IR detectors. Specifically, the growth, charactrtization, materials and device issues for these two applications are described. Emphasis is placed on the wide bandgap emitters where much progress has occurred recently.The book also presents new directions that have potential, future applications in optoelectronics for II-VI materials. In particular, it discusses the status of dilute magnetic semiconductors for mango-optical and electromagnetic devices, nonlinear optical properties, photorefractive effects and new materials and physics phenomena, such as self-organized, low-dimensional structures.II_VI Semiconductor Materials and Their Applications is a valuable reference book for researchers in the field as well as a textbook for materials science and applied physics courses.




Physical Properties of III-V Semiconductor Compounds


Book Description

The objective of this book is two-fold: to examine key properties of III-V compounds and to present diverse material parameters and constants of these semiconductors for a variety of basic research and device applications. Emphasis is placed on material properties not only of Inp but also of InAs, GaAs and GaP binaries.




Ternary Alloys Based on II-VI Semiconductor Compounds


Book Description

Doped by isovalent or heterovalent foreign impurities (F), II–VI semiconductor compounds enable control of optical and electronic properties, making them ideal in detectors, solar cells, and other precise device applications. For the reproducible manufacturing of the doped materials with predicted and desired properties, manufacturing technologists need knowledge of appropriate ternary system phase diagrams. A guide for technologists and researchers at industrial and national laboratories, Ternary Alloys Based on II-VI Semiconductor Compounds collects all available data on ternary II–VI–F semiconductor materials. It presents ternary phase diagrams for the systems and includes data about phase equilibriums on the cross sections. The book is also suitable for phase diagram researchers, inorganic chemists, and solid state physicists as well as students in materials science, engineering, physical chemistry, and physics. The authors classify all materials according to the periodic groups of their constituent atoms (i.e., possible combinations of Zn, Cd, and Hg with chalcogens S, Se, and Te) and additional components in the order of their group number. Each ternary system database description contains the diagram type, possible phase transformation and physical–chemical interaction of the components, equilibrium investigation methods, thermodynamic characteristics, and the sample preparation method. In some cases, the book illustrates the solid and liquid-phase equilibriums with vapor because of their importance to crystal growth using the vapor–liquid–solid technique. It also presents data on the homogeneity range as well as baric and temperature dependences of solubility impurities in the semiconductor lattice and the liquid phase.




Growth and Optical Properties of Wide-Gap II–VI Low-Dimensional Semiconductors


Book Description

This volume contains the Proceedings of the NATO Advanced Research Workshop on "Growth and Optical Properties of Wide Gap II-VI Low Dimensional Semiconductors", held from 2 - 6 August 1988 in Regensburg, Federal Republic of Germany, under the auspices of the NATO International Scientific Exchange Programme. Semiconducting compounds formed by combining an element from column II of the periodic table with an element from column VI (so called II-VI Semiconductors) have long promised many optoelectronic devices operating in the visible region of the spectrum. However, these materials have encountered numerous problems including: large number of defects and difficulties in obtaining p- and n-type doping. Advances in new methods of material preparation may hold the key to unlocking the unfulfilled promises. During the workshop a full session was taken up covering the prospects for wide-gap II-VI Semiconductor devices, particularly light emitting ones. The growth of bulk materials was reviewed with the view of considering II-VI substrates for the novel epitaxial techniques such as MOCVD, MBE, ALE, MOMBE and ALE-MBE. The controlled introduction of impurities during non-equilibrium growth to provide control of the doping type and conductivity was emphasized.