Download or read book Growth and Characterization of Micro crystalline Silicon germanium and Silicon carbon Films written by Karl Robert Erickson and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on the growth chemistry and appropriate process parameters that result in the formation of micro-crystalline silicon-germanium and silicon-carbon films. The growth technique uses an electron-cyclotron-resonance-chemical-vapor-deposition apparatus. This apparatus allows the process engineer to control such parameters as the plasma resonance plane, substrate temperature, microwave power, vacuum pressure, gas flow ratios, and gas combinations. The plasma gas is hydrogen and the precursor gases are silane and germane. The hydrogen ions and electrons in the plasma dissociate the precursor gases into radicals that give rise to film growth on the substrate. The substrate temperatures are kept below 300 C so that deposition on polyimide substrates can be performed.
Download or read book Silicon Germanium and Their Alloys written by Gudrun Kissinger and published by CRC Press. This book was released on 2014-12-09 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the vast knowledge accumulated on silicon, germanium, and their alloys, these materials still demand research, eminently in view of the improvement of knowledge on silicon–germanium alloys and the potentialities of silicon as a substrate for high-efficiency solar cells and for compound semiconductors and the ongoing development of nanodevices based on nanowires and nanodots. Silicon, Germanium, and Their Alloys: Growth, Defects, Impurities, and Nanocrystals covers the entire spectrum of R&D activities in silicon, germanium, and their alloys, presenting the latest achievements in the field of crystal growth, point defects, extended defects, and impurities of silicon and germanium nanocrystals. World-recognized experts are the authors of the book’s chapters, which span bulk, thin film, and nanostructured materials growth and characterization problems, theoretical modeling, crystal defects, diffusion, and issues of key applicative value, including chemical etching as a defect delineation technique, the spectroscopic analysis of impurities, and the use of devices as tools for the measurement of materials quality.
Download or read book MBE Growth and Analysis of Germanium carbon and Silicon germanium carbon Films written by Suibin Zhang and published by . This book was released on 1994 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Growth of Microcrystalline Thin Films Using ECR PECVD written by Yung Moo Huh and published by . This book was released on 2002 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high rate growth method of hydrogenated microcrystalline silicon, [Mu]c-Si:H, and silicon-germanium, [Mu]c-(Si, Ge):H, has been developed with very low hydrogen dilution ratio on foreign substrates, using a remote electron cyclotron resonance - plasma enhanced chemical vapor deposition (ECR-PECVD) process. In this work, the key variable was the hydrogen dilution, ratio of hydrogen to silane, [H2]/[SiH4], which ranged from 3.3 to 10, adding helium systematically. Phase transition from amorphous to microcrystalline states was observed as the amount of added helium was varied. It has been found that hydrogenated microcrystalline silicon films with more than 70 % of crystalline volume fraction were formed at high growth rates of 3.2 Å/sec at low substrate temperature below 300°C from the mixture of silane and hydrogen with a low hydrogen dilution ratio of as low as 3.3. The addition of helium did not increase the growth rate significantly, but it quickly served as disrupting microcrystalline formation. In addition, the substrate temperature-dependent phase transition was observed. The structural, electrical and optical properties, by Raman shift, x-ray diffraction, dark and photo conductivity, activation energy of dark conductivity, and photosensitivity measurements, were investigated to grow good quality [Mu]c-Si:H films at the low hydrogen dilution ratio with high growth rates. The prominent peaks at 520 cm−1 from Raman Shift spectroscopy, crystalline peaks from x-ray diffraction pattern, small photosensitivity, and low activation energy of dark conductivity due to grain boundaries in microcrystalline silicon thin films indicated the characteristic of crystalline materials.
Download or read book Growth and Characterization of Single Crystal Silicon germanium Alloy written by Binod Kumar Dugar and published by . This book was released on 1978 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silicon Germanium Carbon Alloys written by S. Pantellides and published by CRC Press. This book was released on 2002-07-26 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon (C) and Silicon Germanium (SiGe) work like a magic sauce. At least in small concentrations, they make everything taste better. It is remarkable enough that SiGe, a new material, and the heterobipolar transistor, a new device, appear on the brink of impacting the exploding wireless market. The addition of C to SiGe, albeit in small concentrations, looks to have breakthrough potential. Here, at last, is proof that materials science can put a rocket booster on the silicon-mind, the silicon transistor. Scientific excitement arises, as always, from the new possibilities a multicomponent materials system offers. Bandgaps can be changed, strains can be tuned, and properties can be tailored. This is catnip to the materials scientist. The wide array of techniques applied here to the SiGeC system bear testimony to the ingenious approaches now available for mastering the complexities of new materials
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystal Growth and Characterization of Silicon Carbide and Aluminum Nitride Films written by Zhenjiang Yu and published by . This book was released on 1993 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Characterization of Beta silicon Carbide Thin Films written by Bagher Bahavar and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Growth and Characterization of Ge C Alloy Thin Films and Solid Phase Equilibria for Metal silicon oxygen Ternary Systems written by Haojie Yuan and published by . This book was released on 1992 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Crystal Growth and Characterization of Silicon Germanium Alloys written by Tilghman Lee Rittenhouse and published by . This book was released on 1999 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deposition and Characterization of Hydrogenated Amorphous Silicon Microcrystalline Silicon and Silicon Based Alloy Thin Films written by Cheng Wang and published by . This book was released on 1991 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Energy written by Christoph Richter and published by Springer. This book was released on 2012-11-29 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gathering some 30 entries from the Encyclopedia of Sustainability Science and Technology, this book presents fundamental principles and technologies for sustainably harnessing solar energy. Covers photovoltaics, solar thermal energy, solar radiation and more.
Download or read book Growth and Characterization of Undoped and Doped Silicon Thin Films Using Supersonic Molecular Jets written by Rajeev Malik and published by . This book was released on 1996 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Characterization of Crystalline Ge subscript 1 x C subscript X Thin Films and Devices written by Jason Thomas Herrold and published by . This book was released on 2000 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic material, optical and electrical properties of the films were studied to build a knowledge resource on this new material. For comparison and to deepen the understanding of the nature of the alloy, pure Ge films were grown with similar parameters to the Ge[Subscript 1-x]C[Subscript x] alloy films. The films are characterized by UV/VIS/NIR Spectroscopy, Raman spectroscopy, x-ray diffraction, x-ray photoelectron spectroscopy, scanning electron microscopy, four point probe conductivity and Hall mobility measurements. The second stage of the research was to dope the material n and p type and to determine the affect on the electrical properties. The final stage was to use the knowledge obtained from the above work to develop novel multi-layer structures that optimize the desirable material properties and to develop a 'proof of concept' diode in the crystalline Ge[Subscript 1-x]C[Subscript x] material, which was the first microelectronic device fabricated in this material.
Download or read book Amorphous and Plycrystalline Thin Film Silicon Science and Technology 2008 written by Arokia Nathan and published by Cambridge University Press. This book was released on 2014-06-05 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous, nano-, micro- and polycrystalline silicon thin films and associated alloys are used in a plethora of applications ranging from active matrix displays and imaging arrays to solar panels. These applications make large-area electronics the fastest growing semiconductor technology today, pushing material requirements and device performance to new limits. This book brings together researchers to share their expertise. Materials addressed include amorphous, nano-, micro- and polycrystalline silicon, and their alloys with germanium, carbon and other elements. Topics include: the understanding of growth processes; producing high-quality films at high growth rates or low temperatures; in situ characterization techniques for monitoring growth; understanding amorphous, mixed-phase and crystalline structures, along with the principles for augmenting crystallinity; developing post-deposition processes; identifying fundamental issues in electronic structure and carrier transport in 3D, 2D and 1D; understanding metastability and the role of hydrogen; integrating photovoltaic devices and thin-film electronics into systems on glass, flexible polymeric and other nonconventional substrates; and designing, fabricating and testing devices and applications.
Download or read book Japanese Science and Technology written by and published by . This book was released on 1986 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
