Download or read book Preparation and Thermodynamic Properties of Boron Arsenide BAs and Hexa boron Arsenide B sub 6 A sub S written by Howard M. Goldman and published by . This book was released on 1971 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Boron Arsenides written by David J. Fisher and published by Materials Research Forum LLC. This book was released on 2023-01-25 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boron Arsenide offers very interesting electronic properties, as well as a high thermal conductivity; nearly 10 times higher than that of silicon. It has been hailed as ‘the best semiconductor material ever found’. The present book presents a detailed review of this material and its potential applications. The materials covered include Icosahedral Boron Arsenide, Hexagonal Boron Arsenide, Amorphous Boron Arsenide and Cubic Boron Arsenide. The book references 166 original resources with their direct web links for in-depth reading. Keywords: Boron Arsenides, Electron Mobility, Hole Mobility, Band-gap, Monolayers, Defects, Mechanical Properties, Photo-electrodes, Thermal Conductivity, Heat-spreading.
Download or read book Preparation and Properties of Boron Arsenide written by Adin Edwin Hyslop and published by . This book was released on 1970 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry Involving the Preparation Isolation and Immobilization of Nanocrystalline And or Microcrystalline Boron Arsenide Boron Phosphide Boron Antimonide written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this report period, publications 1 and 2 (see below) appeared in print (the contents of the papers were reported in two previous "Interim Technical Reports"). Michael Lube prepared the adduct Cl3B. Sb(Sb(SiMe3)3, the third Lewis acid-base adduct of boron and antimony to be structurally characterized. This adduct along with Br3 B. Sb(SiMe3)3 and I3B. Sb(SiMe3)3 are the subject of publication 3 (see below) with the manuscript being written by Michael. Based on the various data obtained, it appeared that the black powders obtained from the thermolysis of these adducts were a mixture of nanocrystalline Sb (hex) and amorphous BSb (data summarized in Michaels's?- PhD. dissertation, 9/6/96, Duke University). Further investigations, on halo-boron-arsenic systems by Michael, with some assistance from Richard Jouet, (see publication 4 below) resulted in the isolation and structural characterization of I3B. As(SiMe3)3, as well as the isolation of X-ray quality crystals of the Cl3B. As(SiMe3)3 I2BAs(SiMe3)22 (preparations previously reported in the 1996 "Interim Technical report").
Download or read book Thin Films by Chemical Vapour Deposition written by C.E. Morosanu and published by Elsevier. This book was released on 2016-06-22 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: The explosive growth in the semiconductor industry has caused a rapid evolution of thin film materials that lend themselves to the fabrication of state-of-the-art semiconductor devices. Early in the 1960s an old research technique named chemical vapour phase deposition (CVD), which has several unique advantages, developed into the most widely used technique for thin film preparation in electronics technology. In the last 25 years, tremendous advances have been made in the science and technology of thin films prepared by means of CVD. This book presents in a single volume, an up-to-date overview of the important field of CVD processes which has never been completely reviewed previously. Contents: Part I. 1. Evolution of CVD Films. Introductory remarks. Short history of CVD thin films. II. Fundamentals. 2. Techniques of Preparing Thin Films. Electrolytic deposition techniques. Vacuum deposition techniques. Plasma deposition techniques. Liquid-phase deposition techniques. Solid-phase deposition techniques. Chemical vapour conversion of substrate. Chemical vapour deposition. Comparison between CVD and other thin film deposition techniques. 3. Chemical Processes Used in CVD. Introduction. Description of chemical reactions used in CVD. 4. Thermodynamics of CVD. Feasibility of a CVD process. Techniques for equilibrium calculations in CVD systems. Examples of thermodynamic studies of CVD systems. 5. Kinetics of CVD. Steps and control type of a CVD heterogeneous reaction. Influence of experimental parameters on thin film deposition rate. Continuous measurement of the deposition rate. Experimental methods for studying CVD kinetics. Role of homogeneous reactions in CVD. Mechanism of CVD processes. Kinetics and mechanism of dopant incorporation. Transport phenomena in CVD. Status of kinetic and mechanism investigations in CVD systems. 6. Measurement of Thin Film Thickness. Mechanical methods. Mechanical-optical methods. Optical methods. Electrical methods. Miscellaneous methods. 7. Nucleation and Growth of CVD Films. Stages in the nucleation and growth mechanism. Regimes of nucleation and growth. Nucleation theory. Dependence of nucleation on deposition parameters. Heterogeneous nucleation and CVD film structural forms. Homogeneous nucleation. Experimental techniques. Experimental results of CVD film nucleation. 8. Thin Film Structure. Techniques for studying thin film structure. Structural defects in CVD thin films. 9. Analysis of CVD Films. Analysis techniques of thin film bulk. Analysis techniques of thin film surfaces. Film composition measurement. Depth concentration profiling. 10. Properties of CVD Films. Mechanical properties. Thermal properties. Optical properties. Photoelectric properties. Electrical properties. Magnetic properties. Chemical properties. Part III. 11. Equipment and Substrates. Equipment for CVD. Safety in CVD. Substrates. 12. Preparation and Properties of Semiconducting Thin Films. Homoepitaxial semiconducting films. Heteroepitaxial semiconducting films. 13. Preparation and Properties of Amorphous Insulating Thin Films. Oxides. Nitrides and Oxynitrides. Polymeric thin films. 14. Preparation and Properties of Conductive Thin Films. Metals and metal alloys. Resistor materials. Transparent conducting films. Miscellaneous materials. 15. Preparation and Properties of Superconducting and Magnetic Thin Films. Superconducting materials. Magnetic materials. 16. Uses of CVD Thin Films. Applications in electronics and microelectronics. Applications in the field of microwaves and optoelectronics. Miscellaneous applications. Artificial heterostructures (Quantum wells, superlattices, monolayers, two-dimensional electron gases). Part V. 17. Present and Future Importance of CVD Films.
Download or read book Applications of Bis imino acenaphthene and Investigation of Boron Arsenide as a High Thermal Conductivity Material written by Daniel Anthony Evans and published by . This book was released on 2015 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Functionalization of the ubiquitous bis(imino)acenaphthene ligand class has been explored. The successful functionalization of this ligand type was found to be dependent upon the steric congestion encompassing the N-C-C-N fragment of the aryl substituted BIAN ligand. The sterically directed functionalization was found to proceed via either a radical backbone dearomatization route or a nucleophilic imine C-alkylation pathway. The structures of each of the functionalized BIAN derivatives were examined by means of single crystal X-ray crystallography. The foregoing reactions were also probed by EPR spectroscopy and DFT-D calculations in order to help elucidate the nature of the driving forces that are involved in BIAN functionalization. A series of aryl substituted BIAN zinc(II) chloride complexes were also prepared and their photophysical properties were investigated. Initially, four different methylated aryl substituents were examined, namely the 4-methylphenyl, 3,5-dimethylphenyl, 2,4,6-trimethylphenyl, and 2-methylphenyl derivatives. Examination of these four complexes revealed them to be non-emissive in solution. However, it was also determined that the 4-methylphenyl and 3,5-dimethylphenyl substituted complexes were emissive in the solid state. On the other hand, the 2,4,6-trimethylphenyl, and 2-methylphenyl complexes were found to be non-emissive in the solid state. The origins of the emissions of the foregoing complexes were also probed by means of TD-DFT calculations. The tuning of the stereoelectronic properties of a series of para-substituted aryl BIAN zinc(II) chloride complexes was undertaken with the view to modifying their solid state photophysical properties. For example, changing the electronic properties of the flanking para-substituted aryl substituents permitted tunability within the range of the red-orange-yellow emissions. Tunability was also achieved by employing a variety of different recrystallization techniques for growing the various structures, polymorphs, and solvatomorphs of each BIAN zinc(II) chloride complex. Boron arsenide, a somewhat neglected semiconductor compound, has been examined for its potential use as a high thermal conductivity material. High quality single crystal BAs microstructures have been synthesized and characterized by means of powder X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, and scanning electron microscopy. The thermal conductivity properties of the BAs microstructures have been probed using microheater devices.
Download or read book Pressure Synthesis of Boron Phosphide and Boron Arsenide written by Paul E. Grayson and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamic Properties of Boron Compounds written by Donald D. Wagman and published by . This book was released on 1954 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamic Properties of Some Boron Compounds written by William H. Evans and published by . This book was released on 1956 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamic Properties of Some Solid Compounds of Boron written by Herbert Norman Hersh and published by . This book was released on 1950 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Study of High Purity Boron Group Five Compounds written by J. T. Buford and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report summarizes the results of a twenty month study of various compounds of boron with the group five elements phosphorus, arsenic, and antimony. Methods of preparation of high purity boron phosphide, boron subphosphide, and boron subarsenide were used to produce these compounds for further study, while boron arsenide was produced only as a mixture with large amounts of boron, assumed to be free or unreacted. X-ray studies of boron phosphide and boron arsenide were performed to determine if and to what degree the compounds produced in this study exhibited the ideal ordered zincblende structure. The results for boron arsenide show closer agreement with theoretical predictions than previous studies. Dense compacts of vapor deposited boron phosphide were formed as samples for window material studies. A feasibility study of the preparation of boron antimonide in 100 gram quantities determined that such a process is apparently not feasible. (Modified author abstract).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Preparation and Properties of Boron written by Roy K. Neill and published by . This book was released on 1941 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1980 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Constants of Crystalline and Amorphous Semiconductors written by Sadao Adachi and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the refractive indices and absorption coefficients of semiconductors is especially import in the design and analysis of optical and optoelectronic devices. The determination of the optical constants of semiconductors at energies beyond the fundamental absorption edge is also known to be a powerful way of studying the electronic energy-band structures of the semiconductors. The purpose of this book is to give tabulated values and graphical information on the optical constants of the most popular semiconductors over the entire spectral range. This book presents data on the optical constants of crystalline and amorphous semiconductors. A complete set of the optical constants are presented in this book. They are: the complex dielectric constant (E=e.+ieJ, complex refractive index (n*=n+ik), absorption coefficient (a.), and normal-incidence reflectivity (R). The semiconductor materials considered in this book are the group-IV elemental and binary, llI-V, IT-VI, IV-VI binary semiconductors, and their alloys. The reader will fmd the companion book "Optical Properties of Crystalline and Amorphous Semiconductors: Materials and Fundamental Principles" useful since it emphasizes the basic material properties and fundamental prinCiples.
Download or read book Heat Capacity and Thermal Expansion at Low Temperatures written by T.H.K. Barron and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The birth of this monograph is partly due to the persistent efforts of the General Editor, Dr. Klaus Timmerhaus, to persuade the authors that they encapsulate their forty or fifty years of struggle with the thermal properties of materials into a book before they either expired or became totally senile. We recognize his wisdom in wanting a monograph which includes the closely linked properties of heat capacity and thermal expansion, to which we have added a little 'cement' in the form of elastic moduli. There seems to be a dearth of practitioners in these areas, particularly among physics postgraduate students, sometimes temporarily alleviated when a new generation of exciting materials are found, be they heavy fermion compounds, high temperature superconductors, or fullerenes. And yet the needs of the space industry, telecommunications, energy conservation, astronomy, medical imaging, etc. , place demands for more data and understanding of these properties for all classes of materials - metals, polymers, glasses, ceramics, and mixtures thereof. There have been many useful books, including Specific Heats at Low Tempera tures by E. S. Raja Gopal (1966) in this Plenum Cryogenic Monograph Series, but few if any that covered these related topics in one book in a fashion designed to help the cryogenic engineer and cryophysicist. We hope that the introductory chapter will widen the horizons of many without a solid state background but with a general interest in physics and materials.
