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Author : Enrique Leal Jaen
Publisher :
ISBN 13 :
Total Pages : 179 pages
Book Rating : 4.:/5 (255 download)
Download or read book Modeling and Molecular Dynamics Simulation of Amorphous Silicon Crystallization written by Enrique Leal Jaen and published by . This book was released on 2000 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Herzbach
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (118 download)
Download or read book Comparison of Model Potentials for Molecular Dynamics Simulation of Crystalline Silica written by Daniel Herzbach and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Allan S. Myerson
Publisher : Cambridge University Press
ISBN 13 : 0521552974
Total Pages : 370 pages
Book Rating : 4.5/5 (215 download)
Download or read book Molecular Modeling Applications in Crystallization written by Allan S. Myerson and published by Cambridge University Press. This book was released on 1999-06-28 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book to introduce molecular modeling and its applications in crystallization - written by leading experts in the field.
Author : Inhee Kwon
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (258 download)
Download or read book Theoretical Studies of Amorphous Silicon and Hydrogenated Amorphous Silicon with Molecular Dynamics Simulations written by Inhee Kwon and published by . This book was released on 1991 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Carlo Massobrio
Publisher : Springer
ISBN 13 : 3319156756
Total Pages : 540 pages
Book Rating : 4.3/5 (191 download)
Download or read book Molecular Dynamics Simulations of Disordered Materials written by Carlo Massobrio and published by Springer. This book was released on 2015-04-22 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a unique reference work in the area of atomic-scale simulation of glasses. For the first time, a highly selected panel of about 20 researchers provides, in a single book, their views, methodologies and applications on the use of molecular dynamics as a tool to describe glassy materials. The book covers a wide range of systems covering "traditional" network glasses, such as chalcogenides and oxides, as well as glasses for applications in the area of phase change materials. The novelty of this work is the interplay between molecular dynamics methods (both at the classical and first-principles level) and the structure of materials for which, quite often, direct experimental structural information is rather scarce or absent. The book features specific examples of how quite subtle features of the structure of glasses can be unraveled by relying on the predictive power of molecular dynamics, used in connection with a realistic description of forces.
Author : Sándor Kugler
Publisher : Cambridge University Press
ISBN 13 : 1107019346
Total Pages : 161 pages
Book Rating : 4.1/5 (7 download)
Download or read book Amorphous Semiconductors written by Sándor Kugler and published by Cambridge University Press. This book was released on 2015-02-12 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains how to use computer modelling to understand amorphous semiconductors for researchers in solid state physics and semiconductor engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (683 download)
Download or read book Molecular Dynamics Studies of the Ion Beam Induced Crystallization in Silicon written by and published by . This book was released on 1995 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the ion bombardment induced amorphous-to-crystal transition in silicon using molecular dynamics techniques. The growth of small crystal seeds embedded in the amorphous phase has been monitored for several temperatures in order to get information on the effect of the thermal temperature increase introduced by the incoming ion. The role of ion-induced defects on the growth has been also studied.
Author : A. Borghesi
Publisher : Newnes
ISBN 13 : 044459633X
Total Pages : 580 pages
Book Rating : 4.4/5 (445 download)
Download or read book C, H, N and O in Si and Characterization and Simulation of Materials and Processes written by A. Borghesi and published by Newnes. This book was released on 2012-12-02 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing over 200 papers, this volume contains the proceedings of two symposia in the E-MRS series. Part I presents a state of the art review of the topic - Carbon, Hydrogen, Nitrogen and Oxygen in Silicon and in Other Elemental Semiconductors. There was strong representation from the industrial laboratories, illustrating that the topic is highly relevant for the semiconductor industry. The second part of the volume deals with a topic which is undergoing a process of convergence with two concerns that are more particularly application oriented. Firstly, the advanced instrumentation which, through the use of atomic force and tunnel microscopies, high resolution electron microscopy and other high precision analysis instruments, now allows for direct access to atomic mechanisms. Secondly, the technological development which in all areas of applications, particularly in the field of microelectronics and microsystems, requires as a result of the miniaturisation race, a precise mastery of the microscopic mechanisms.
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (965 download)
Download or read book Amorphization and Nanocrystallization of Silcon Under Shock Compression written by and published by . This book was released on 2015 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-power, short-duration, laser-driven, shock compression and recovery experiments on [001] silicon unveiled remarkable structural changes above a pressure threshold. Two distinct amorphous regions were identified: (a) a bulk amorphous layer close to the surface and (b) amorphous bands initially aligned with slip planes. Further increase of the laser energy leads to the re-crystallization of amorphous silicon into nanocrystals with high concentration of nano-twins. This amorphization is produced by the combined effect of high magnitude hydrostatic and shear stresses under dynamic shock compression. Shock-induced defects play a very important role in the onset of amorphization. Calculations of the free energy changes with pressure and shear, using the Patel-Cohen methodology, are in agreement with the experimental results. Molecular dynamics simulation corroborates the amorphization, showing that it is initiated by the nucleation and propagation of partial dislocations. As a result, the nucleation of amorphization is analyzed qualitatively by classical nucleation theory.
Author : Joo Chul Yoon
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (852 download)
Download or read book Molecular Dynamics Simulations with Nano-structures for Silicon Recrystallization written by Joo Chul Yoon and published by . This book was released on 2006 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (873 download)
Download or read book Large Scale Molecular Dynamics Modeling of Materials Fabrication Processes written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: An atomistic molecular dynamics model of materials fabrication processes is presented. Several material removal processes are shown to be within the domain of this simulation method. Results are presented for orthogonal cutting of copper and silicon and for crack propagation in silica glass. Both copper and silicon show ductile behavior, but the atomistic mechanisms that allow this behavior are significantly different in the two cases. The copper chip remains crystalline while the silicon chip transforms into an amorphous state. The critical stress for crack propagation in silica glass was found to be in reasonable agreement with experiment and a novel stick-slip phenomenon was observed.
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (982 download)
Download or read book Dependence of Short and Intermediate-range Order on Preparation in Experimental and Modeled Pure A-Si written by and published by . This book was released on 2016 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Variability in the short-to-intermediate range order of pure amorphous silicon prepared by different experimental and computational techniques is probed by measuring mass density, atomic coordination, bond-angle deviation, and dihedral angle deviation. It is found that there is significant variability in order parameters at these length scales in this archetypal covalently bonded, monoatomic system. This diversity strongly reflects preparation technique and thermal history in both experimental and simulated systems. Experiment and simulation do not fully quantitatively agree, partly due to differences in the way parameters are accessed. However, qualitative agreement in the trends is identified. Relaxed forms of amorphous silicon closely resemble continuous random networks generated by a hybrid method of bond-switching Monte Carlo and molecular dynamics simulation. As-prepared ion implanted amorphous silicon can be adequately modeled using a structure generated from amorphization via ion bombardement using energetic recoils. Preparation methods which narrowly avoid crystallization such as experimental pressure-induced amorphization or simulated melt-quenching result in inhomogeneous structures that contain regions with significant variations in atomic ordering. Ad hoc simulated structures containing small (1 nm) diamond cubic crystal inclusions were found to possess relatively high bond-angle deviations and low dihedral angle deviations, a trend that could not be reconciled with any experimental material.
Author : Kunal Ghosh
Publisher : ProQuest
ISBN 13 : 9780549926917
Total Pages : pages
Book Rating : 4.9/5 (269 download)
Download or read book Modeling of Amorphous Silicon/crystalline Silicon Heterojunction by Commercial Simulator written by Kunal Ghosh and published by ProQuest. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous silicon/crystalline silicon (a-Si/c-Si) heterojunction solar cells offer high efficiency in a simplified and easily scalable process. Despite success in commercialization of these devices, the detailed working principles of them are poorly understood. In particular the effect of interface defects at the a-Si/c-Si heterojunction and the intervening intrinsic layer require explanation. The goal of this research is to understand the effect of interface defects and the intrinsic layer on non-linear effects in current-voltage curves of heterojunction devices by developing a computer model in SENTAURUS. Previously, computer models based in programs such as PC1D, AFORSHET and AMPS-1D have been used but suffer from drawbacks such as not including the gap states and interface modeling as well as not having the option of user-defined recombination statistics. In this work the commercial package SENTAURUS is used, providing a robust and reliable environment in which to develop the model. Key features of the model are the inclusion of dangling bond states via a defect pool model, band gap narrowing of the a-Si, region specific recombination-generation statistics and the change in capture cross section due to charging of trap states. Simulation of devices using this model has demonstrated several processes which guide for device design. Firstly, the number and nature of defects at the a-Si/c- Si interface influence device behavior strongly. More importantly, the thickness of the intrinsic layer is found to be critical. Under ideal operating conditions a p-type region is induced in the intrinsic layer leading to the p-n junction being formed in the c-Si. When the intrinsic layer thickness is increased this is no longer the case, with the p-n junction forming in the a-Si, leading to drastically reduced performance of the device. The development of the recombination models, their incorporation into SENTAURUS, the modeling results and the implications for device design allow improved heterojunction solar cell designs.
Author : Kazuo Morigaki
Publisher : John Wiley & Sons
ISBN 13 : 1118757947
Total Pages : 290 pages
Book Rating : 4.1/5 (187 download)
Download or read book Amorphous Semiconductors written by Kazuo Morigaki and published by John Wiley & Sons. This book was released on 2016-12-29 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amorphous semiconductors are subtances in the amorphous solid state that have the properties of a semiconductor and which are either covalent or tetrahedrally bonded amorphous semiconductors or chelcogenide glasses. Developed from both a theoretical and experimental viewpoint Deals with, amongst others, preparation techniques, structural, optical and electronic properties, and light induced phenomena Explores different types of amorphous semiconductors including amorphous silicon, amorphous semiconducting oxides and chalcogenide glasses Applications include solar cells, thin film transistors, sensors, optical memory devices and flat screen devices including televisions
Author : Daniel Herzbach
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (766 download)
Download or read book Comparison of Model Potentials for Molecular Dynamics Simulation of Crystalline Silicia written by Daniel Herzbach and published by . This book was released on 2004 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sándor Kugler
Publisher : Cambridge University Press
ISBN 13 : 1139916149
Total Pages : 161 pages
Book Rating : 4.1/5 (399 download)
Download or read book Amorphous Semiconductors written by Sándor Kugler and published by Cambridge University Press. This book was released on 2015-02-12 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the structural unit of crystalline solids is vital in determining their optical and electronic properties. However, the disordered nature of amorphous semiconductors, where no long-range order is retained, makes it difficult to determine their structure using traditional methods. This book shows how computer modelling can be used to overcome the difficulties that arise in the atomic scale identification of amorphous semiconductors. The book explains how to generate a random structure using computer modelling, providing readers with the techniques to construct realistic material structures. It shows how the optical and electronic properties are related to random structures. Readers will be able to understand the characteristic features of disordered semiconductors. The structural and electronic modifications by photon irradiation are also discussed in detail. This book is ideal for both physicists and engineers working in solid state physics, semiconductor engineering and electrical engineering.
Author : Paolo Valentini
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (52 download)
Download or read book Molecular Dynamics Simulations of the Deposition of Silicon Nanoparticles Onto Crystalline Silicon Substrates written by Paolo Valentini and published by . This book was released on 2007 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
