Download or read book The Effects of Deformation on the Infrared Optical Properties of Germanium and Silicon and on the Electrical Properties of Germanium written by Marshall Duane Meyer and published by . This book was released on 1965 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Plastic Deformation on the Electric Properties of Germanium written by Robert William Estin and published by . This book was released on 1955 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Pressure on the Optical Properties of Germanium in the Near Infra red written by Rob Vetter and published by . This book was released on 1970 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low temperature Far infrared Spectra of Germanium and Silicon written by Peter J. Gielisse and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: New high-resolution low-temperature (7.5K) far-infrared data on intrinsic germanium and silicon are presented. The findings further substantiate the naturally anticipated similarities in band patterns of the vibrational spectra of diamond type crystals. The low temperature spectra of germanium and silicon show clearly resolved splits in their principal absorption bands analogous to the intriguing doublet in the ca. 2000/cm band in diamond. A possible explanation is indicated. The room temperature far-infrared refractive index of both germanium and silicon and the 7.5K refractive index of germanium have been measured by means of interference fringes. (Author).
Download or read book Dissertation Abstracts written by and published by . This book was released on 1965 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts of dissertations and monographs in microform.
Download or read book Extended Defects in Germanium written by Cor Claeys and published by Springer Science & Business Media. This book was released on 2008-12-29 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim is to give an overview of the physics of extended defects in Germanium, i.e. dislocations (line defects), grain boundaries, stacking faults, twins and {311} defects (two-dimensional defects) and precipitates, bubbles, etc. The first part covers fundamentals, describing the crystallographic structure and other physical and electrical properties, mainly of dislocations. Since dislocations are essential for the plastic deformation of Germanium, methods for analysis and imaging of dislocations and to evaluate their structure are described. Attention is given to the electrical and optical properties, which are important for devices made in dislocated Ge. The second part treats the creation of extended defects during wafer and device processing. Issues are addressed such as defect formation during ion implantation, necessary to create junctions, which are an essential part in every device type. Extended defects are also created during the deposition of thin or thick epitaxial layers on other substrates, which are important for optoelectronic and photovoltaic applications. In brief, the book is intended to provide a fundamental understanding of the extended-defect formation during Ge materials and device processing, providing ways to distinguish harmful from less detrimental defects and should point out ways for defect engineering and control.
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Physics M Z written by Xerox University Microfilms and published by . This book was released on 1973 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical and Electrical Properties of Narrow Gap Germanium tin Alloys with High Tin Contents for Middle and Far Infrared Applications written by Dominic Imbrenda and published by . This book was released on 2018 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Germanium-Tin (GeSn) alloys have received considerable attention because of the interesting electronic properties they possess. The offer a potential route to a direct bandgap group IV semiconductor that is isoelectronic with silicon and can be fully integrated into current silicon manufacturing processes. Despite the active research of GeSn some of their optical and electrical properties, especially for the high Sn contents, are not fully understood. ☐ During the course of this research, the optical properties of high Sn content GeSn thin film alloys deposited directly on Ge were determined by variable angle spectroscopic ellipsometry (VASE) from the ultraviolet into the infrared (0.190 – 6 μm). For the first time, the complex dielectric function, complex index of refraction, and absorption coefficient of GeSn alloys with atomic Sn percentages from 15- 27%, are presented. The characterization of the optical properties is important in itself for the development of novel devices but more importantly, they also contain rich information about the electronic bandstructure. Analyzing the second derivative of the dielectric function enables the determination of the energy levels of the critical point transitions in the electronic bandstructure. Second derivative analysis results of the high Sn content films are compared to theoretical predictions and expand on the current predictive models. ☐ Weyl semimetals are a new topological state of matter in semimetals without either spatial inversion or time-reversal symmetry, are characterized by their zero-energy, direct bandgaps, and exhibit novel electronic properties. An active area of research is to determine whether certain materials exhibit the characteristics of a Weyl semimetal. The Sn percentage at which the direct bandgap of GeSn reaches zero is roughly 27%, making it a candidate for a Weyl semimetal at this high Sn percentage. Likely signatures of Weyl semimetals are negative magnetoresistance and photogalvanic current from circularly polarized light. Details and results of these experiments conducted on GeSn are given. Although the results are inconclusive, they open the possibility that high Sn content GeSn alloys belong to this exciting new class of materials.
Download or read book Research in Progress written by and published by . This book was released on 1969 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications written by United States. National Bureau of Standards and published by . This book was released on 1970 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1970 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1971 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermophysical Properties of Selected Aerospace Materials Thermal radiative properties written by Purdue University. Thermophysical and Electronic Properties Information Center and published by . This book was released on 1976 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt:
