Description
The phenomenonofspontaneous ordering in semiconductoralloys, which can be categorized as a self-organized process, is observed to occur sponta neously during epitaxial growth of certain ternary alloy semiconductors and results in a modification of their structural, electronic, and optical properties. There has been a great dealofinterest in learning how to control this phenome non so that it may be used for tailoring desirable electronic and optical properties. There has been even greater interest in exploiting the phenomenon for its unique ability in providing an experimental environment of controlled alloy statistical fluctuations. As such, itimpacts areasofsemiconductorscience and technology related to the materials science ofepitaxial growth, statistical mechanics, and electronic structure of alloys and electronic and photonic devices. During the past two decades, significant progress has been made toward understanding the mechanisms that drive this phenomenon and the changes in physical properties that result from it. A variety of experimental techniques have been used to probe the phenomenon and several attempts made atproviding theoretical models both for the ordering mechanisms as well as electronic structure changes. The various chapters of this book provide a detailed account of these efforts during the past decade. The first chapter provides an elaborate account of the phenomenon, with an excellent perspective of the structural and elec tronic modifications itinduces. 1. Basic Aspects of Atomic Ordering in III-V Semiconductor Alloys; T. Suzuki. 2. The Nature and Origin of Atomic Ordering in Group III-V Antimonide Semiconductors Alloys; A.G. Norman. 3. Effects of the Surface on CuPt Ordering During OMVPE Growth; G.B. Stringfello. 4. X-Ray Diffraction Analysis of Ordering in Epitaxial III-B Alloys; R.L. Forrest. 5. Surface Morphology and Formation of Antiphase Boudaries in Ordered (GaIn)P-A TEM Study; T. Sass, I. Pietzonka. 6. X-Ray characterization of CuPt Ordered III-V Ternary Alloys; J. Li. 7. Diffraction and Imaging of Ordered Semiconductors; S.P. Ahrenkiel. 8. X-Ray Analysis of the Short-Range Order in the Ordered-Alloy Domains of Epitaxial (Ga,In)P Layers by DAFS of Superlattice Reflections; D.C. Meyer, K. Richter, G. Wagner, P. Paufler. 9. Ballistic Electron Emission Microscopy and Spectroscopy Study of Ordering-Induced Band Structure Effects in Ga0.52IN0.48P; M. Kozhevnikov, V. Narayanamurti. 10. The Physics of Tunable Disorder in Semiconductor Alloys; A. Mascarenhas, Y. Zhang. 11. Spectroscopic Study of the Interface and Band Alignment at the GaInP(Partially Ordered)/GaAs Heterojunction under High Pressure and High Magnetic Field; P.Y. Yu, G. Martinez, J. Zeman, K. Uchida. 12. Polarization Effects in the (Electro)absorption of Ordered GaInP and their Device Applications; P. Kiesel, T. Kippenberg, G.H. Dhler.
