Morphological and Compositional Evolution of Heteroepitaxial Semiconductor Thin Films:

Morphological and Compositional Evolution of Heteroepitaxial Semiconductor Thin Films:
Author: J. Mirecki Millunchick
Publisher: Cambridge University Press
Total Pages: 350
Release: 2014-06-05
Genre: Technology & Engineering
ISBN: 9781107413092

Strain has a tremendous effect on the morphology and composition of heteroepitaxial semiconductor thin films. Recent progress in strained island formation, and in the morphological and compositional instabilities induced by heteroepitaxial stress, has led to new theoretical and experimental advances, as well as to promising materials for various optoelectronic applications. This book brings together research groups looking at important advances and breaking news in the field. The book centers around mechanisms rather than materials, thus papers in different semiconductor systems, including SiGe, III-V, nitrides, or II-VI semiconductors, are presented. Issues on growth, characterization, and modeling of morphological and compositional nonuniformities are also addressed, as are devices based on these spontaneous structures. Topics include: surface dynamics - atomistic processes; growth on patterned, high-index and vicinal substrates; quantum dots and wires; interdiffusion and segregation; band structure, electronic properties and devices; morphology and microstructure; and nitrides

High-Resolution X-Ray Scattering

High-Resolution X-Ray Scattering
Author: Ullrich Pietsch
Publisher: Springer Science & Business Media
Total Pages: 410
Release: 2013-03-09
Genre: Technology & Engineering
ISBN: 1475740506

During the last 20 years interest in high-resolution x-ray diffractometry and reflectivity has grown as a result of the development of the semiconductor industry and the increasing interest in material research of thin layers of magnetic, organic, and other materials. For example, optoelectronics requires a subsequent epitaxy of thin layers of different semiconductor materials. Here, the individuallayer thicknesses are scaled down to a few atomic layers in order to exploit quantum effects. For reasons of electronic and optical confinement, these thin layers are embedded within much thicker cladding layers or stacks of multilayers of slightly different chemical composition. It is evident that the interface quality of those quantum weHs is quite important for the function of devices. Thin metallic layers often show magnetic properties which do not ap pear for thick layers or in bulk material. The investigation of the mutual interaction of magnetic and non-magnetic layers leads to the discovery of colossal magnetoresistance, for example. This property is strongly related to the thickness and interface roughness of covered layers.

The Granular State: Volume 627

The Granular State: Volume 627
Author: Surajit Sen
Publisher:
Total Pages: 338
Release: 2001-04-09
Genre: Technology & Engineering
ISBN:

These 38 papers from the April 2000 symposium study granular structure, granular flows, nonlinear waves in granular media, vibrated and rotated granular media, and stress distributions. Topics include jamming in liquids and granular materials, nuclear magnetic resonance studies of granular flows, the blueprint of a concept for a nozzle- free inkjet printer, mixing and segregation processes in a Turbula blender, persistence of granular structure during die compaction of ceramic powders, and humidity-induced cohesion effects in granular media. c. Book News Inc.

Quantum Dot Lasers

Quantum Dot Lasers
Author: Victor Mikhailovich Ustinov
Publisher:
Total Pages: 306
Release: 2003
Genre: Science
ISBN: 9780198526797

The book addresses issues associated with physics and technology of injection lasers based on self-organized quantum dots. Fundamental and technological aspects of quantum dot edge-emitting lasers and VCSELs, their current status and future prospects are summarized and reviewed. Basic principles of QD formation using self-organization phenomena are reviewed. Structural and optical properties of self-organized QDs are considered with a number of examples in different material systems. Recent achievements in controlling the QD properties including the effects of vertical stacking, changing the matrix bandgap and the surface density of QDs are reviewed. The authors focus on the use of self-organized quantum dots in laser structures, fabrication and characterization of edge and surface emitting diode lasers, their properties and optimization with special attention paid to the relationship between structural and electronic properties of QDs and laser characteristics. The threshold and power characteristics of the state-of-the-art QD lasers are demonstrated. Issues related to the long-wavelength (1.3-mm) lasers on a GaAs substrate are also addressed and recent results on InGaAsN-based diode lasers presented for the purpose of comparison.

Semiconductor Quantum Dots II: Volume 642

Semiconductor Quantum Dots II: Volume 642
Author: Rosa Leon
Publisher:
Total Pages: 408
Release: 2001-11-09
Genre: Science
ISBN:

The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.