Download or read book Indium Phosphide Negative Electron Affinity Photocathodes written by Yun Sun and published by . This book was released on 2002 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Conference on Indium Phosphide and Related Materials written by and published by . This book was released on 2000 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preparation and Surface Studies of Negative Electron Affinity Semiconductors Photocathodes written by Khaled A. Elamrawi and published by . This book was released on 1999 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Properties of Indium Phosphide written by and published by Institution of Electrical Engineers. This book was released on 1991 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invaluble to those studying or exploiting Indium Phosphide, which can provide tunable light sources at wavelengths which undergo minimum attenuation in fiber optic cables.

Download or read book Annual Review of Materials Science written by and published by Annual Reviews. This book was released on 1981 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides abstracts and full text to articles on materials science.

Download or read book Auger Electron Spectroscopy written by Donald T. Hawkins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Auger electron spectroscopy is rapidly developing into the single most powerful analytical technique in basic and applied science.for investigating the chemical and structural properties of solids. Its ex plosive growth beginning in 1967 was triggered by the development of Auger analyzers capable of de tecting one atom layer of material in a fraction of a second. Continued growth was guaranteed firstly by the commercial availability of apparatus which combined the capabilities of scanning electron mi croscopy and ion-mill depth profiling with Auger analysis, and secondly by the increasing need to know the atomistics of many processes in fundamental research and engineering applications. The expanding use of Auger analysis was accompanied by an increase in the number of publications dealing with it. Because of the developing nature of Auger spectroscopy, the articles have appeared in many different sources covering diverse disciplines, so that it is extremely difficult to discover just what has or has not been subjected to Auger analysis. In this situation, a comprehensive bibliography is obviou-sly useful to those both inside and outside the field. For those in the field, this bibliography should be a wonderful time saver for locating certain references, in researching a particular topic, or when considering various aspects of instrumentation or data analysis. This bibliography not only provides the most complete listing of references pertinent to surface Auger analysis available today, but it is also a basis for extrapolating from past trends to future expectations.

Download or read book Properties Processing and Applications of Indium Phosphide written by T. P. Pearsall and published by Inst of Engineering & Technology. This book was released on 2000-01 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This collection of 49 papers identifies the significant advances and distills the current knowledge from the literature which has been published on indium phosphate (InP) in the last ten years. The major areas of discussion are the importance on InP properties in devices; mechanical, thermal, piezoelectric and electro-optic properties; electronic transport properties; band structure; optical properties; defects, deep levels and their detection; and processing technologies. Topics include InP-based alloys as optical amplifiers and lasers, electron and hole mobilities in InP, conduction band and valance band offsets at various InP/semiconductor interfaces, defect energy levels in irradiated or implanted InP, and etching of InP. Some of the material is reprinted from published in 1991. Distributed by INSPEC. Annotation c. Book News, Inc., Portland, OR (booknews.com)

Download or read book Photoemission Study of Cs NF3 Activated GaAs 100 Negative Electron Affinity Photocathodes written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: GaAs based negative electron affinity photocathodes activated with Cs and NF3 are used as polarized electron sources for linear accelerators. It is generally believed that the activation layer consists of CsF. The activation layers of Cs-NF3 on GaAs photocathodes are herein investigated using synchrotron radiation photoelectron spectroscopy (SR-PES). F1s, N1s and other core levels are recorded at photon energies ranging from 70eV to 820eV. Surprisingly, a significant amount of nitrogen is observed in the activation layers. Two distinct species of nitrogen are observed, one of which decreases along with the Fluorine signal as the yield of the photocathode decays with time.

Download or read book Robust Activation Method for Negative Electron Affinity Photocathodes written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method by which photocathodes(201), single crystal, amorphous, or otherwise ordered, can be surface modified to a robust state of lowered and in best cases negative, electron affinity has been discovered. Conventional methods employ the use of Cs(203) and an oxidizing agent(207), typically carried by diatomic oxygen or by more complex molecules, for example nitrogen trifluoride, to achieve a lowered electron affinity(404). In the improved activation method, a second alkali, other than Cs(205), is introduced onto the surface during the activation process, either by co-deposition, yo-yo, or sporadic or intermittent application. Best effect for GaAs photocathodes has been found through the use of Li(402) as the second alkali, though nearly the same effect can be found by employing Na(406). Suitable photocathodes are those which are grown, cut from boules, implanted, rolled, deposited or otherwise fabricated in a fashion and shape desired for test or manufacture independently supported or atop a support structure or within a framework or otherwise affixed or suspended in the place and position required for use.

Download or read book Photodetectors written by P.N.J. Dennis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been written as part of a new series of scientific text-books being published by Plenum Publishing Company Limited. The scope of the series is to review a chosen topic in each volume, and in addition, to present abstracts of the most important references cited in the text. Thus allowing the reader to supplement the information contained within this book without have to refer to many additional publications. This volume is devoted to the subject of Radiation Detectors, known as Photodetectors, and particular emphasis has been placed on devices operating in the infrared region of the electromagnetic spectrum. Although some detectors which are sensitive at ultraviolet and visible wavelengths, are also described. The existence of the infrared region of the spectrum has been known for almost two hundred years but the development of detectors specifically for these wavelengths was limited for a long time due to technology limitations and difficulties in understanding and explaining the phenomena involved. Significant advances were made during World War II, when the potential military applications of being able "to see in the dar~' were demonstrated, and this progress has been maintained during the last forty years when many major advances have been achieved, such that the use of photodetectors for both civil and military applications is now relatively common and can be inexpensive.

Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics of Thin Films written by Georg Hass and published by Academic Press. This book was released on 2013-10-22 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics of Thin Films: Advances in Research and Development, Volume 12 reviews advances that have been made in research and development concerning the physics of thin films. This volume covers a wide range of preparative approaches, physics phenomena, and applications related to thin films. This book is comprised of four chapters and begins with a discussion on metal coatings and protective layers for front surface mirrors used at various angles of incidence from the ultraviolet to the far infrared. Thin-film materials and deposition conditions suitable for minimizing reflectance changes with angle of incidence are described, along with novel oxide protective coatings with enhanced chemical stability and mechanical durability. The next chapter offers a comprehensive treatment of photoemissive materials. After giving a rather detailed review of the physics of photoemission, the main classes of thin-film photoemitters, including Ag-O-Cs, alkali antimonides, and negative-electron affinity photocathodes, are considered. A description of field-assisted cathodes potentially suitable for wavelengths beyond 1.1 micrometers, such as transferred-electron structures and field-emission arrays, is also given. The reader is then introduced to spray pyrolysis and the solution growth technique for chemical solution deposition of inorganic films. This text concludes with a chapter on plasma-enhanced chemical vapor deposition of thin films, paying particular attention to the experimental conditions required for a range of element and compound materials as well as some of the unusual film properties and structures achieved by this approach. This monograph will be useful to students and practitioners of physics, especially those interested in thin films.

Download or read book Electronic Properties Research Literature Retrieval Guide 1972 1976 Inorganic and intermetallic compounds written by Purdue University. Center for Information and Numerical Data Analysis and Synthesis and published by . This book was released on 1979 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Photomultiplier Handbook written by A. G. Wright and published by Oxford University Press. This book was released on 2017 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Photomultipliers are extremely sensitive light detectors with the capability to detect single photons. In multiplying the charge produced by incident light by up to 100 million times, these devices are essential to a wide range of applications, from medical instrumentation to astronomical observations. This complete and authoritative guide will provide...a deeper understanding of the operating principles of these devices." -- Publisher's description, back cover.

Download or read book High Resolution Imaging written by Swapan K. Saha and published by CRC Press. This book was released on 2015-01-28 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interferometric observations need snapshots of very high time resolution of the order of (i) frame integration of about 100 Hz or (ii) photon-recording rates of several megahertz (MHz). Detectors play a key role in astronomical observations, and since the explanation of the photoelectric effect by Albert Einstein, the technology has evolved rather

Download or read book INIS Atomindex written by and published by . This book was released on 1981 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: