Download or read book Amorphous Silicon Carbide for Photovoltaic Applications written by Stefan Janz and published by . This book was released on 2007 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogenated Amorphous Silicon Carbide Prepared Using DC Saddle Field PECVD for Photovoltaic Applications written by Cheng-Chieh Yang and published by . This book was released on 2011 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogenated amorphous silicon carbide (a-SiC:H) can provide exceptional surface passivation essential for high-efficiency crystalline silicon solar cells. This thesis reports on the fundamental study of a-SiC:H films deposited using a novel deposition technique, DC saddle field PECVD, in contrast to the conventional industrial use of RF-PECVD. The growth conditions were optimized and correlated with passivating, structural, and optical characteristics. The lifetime has a strong dependency on deposition temperature and improves by over two orders of magnitude as the temperature increases; the maximum lifetime achieved in this work reached 0.5 ms. In addition, the Tauc optical gap can be increased from 1.7 eV to 2.3 eV by varying the precursor gas mixture ratio. Post-deposition annealing experiments demonstrate thermal stability of the samples deposited at 250 °C and in some instances shows improvement in passivation quality by a factor of two with a one-step annealing treatment at 300 °C for 15 minutes.

Download or read book Surface Passivation of Crystalline Silicon by Amorphous Silicon Carbide Films for Photovoltaic Applications written by Rafel Ferré Tomàs and published by . This book was released on 2008 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amorphous Silicon Carbide Thin Films written by Mariana Amorim Fraga and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon carbide (SiC) has been described as a suitable semiconductor material to use in MEMS and electronic devices for harsh environments. In recent years, many developments in SiC technology as bulk growth, materials processing, electronic devices and sensors have been shown. Moreover, some studies show the synthesis, characterisation and processing of crystalline SiC films. However, few works have investigated the potential of amorphous silicon carbide (a-SiC) thin films for sensors applications. This book presents fundamentals of amorphous silicon carbide thin films and their applications in piezoresistive sensors for high temperature applications.

Download or read book Surface Passivation of Crystalline Silicon by Amorphous Silicon Carbide Films for Photovoltaic Applications written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: RESUM En aquesta tesi sestudia la passivació del silici cristallí per a la producció de cèllules solars dalta eficiència (> 20%) a baix preu. Actualment la indústria fotovoltaica empra capes de nitrur de silici crescut mitjançant la tècnica PECVD. Com a alternativa, es presenta el carbur de silici amorf (a-SiC), també crescut mitjançant PECVD. Resultats anteriors mostren que la passivacio del silici a partir de carbur de silici amorf son excellents quan el material és ric en silici i dopat amb fòsfor. Lalt contingut en silici provoca absorció de la llum a la capa, que no es tradueix en corrent elèctric, fent daquesta manera que el material sigui només útil quan saplica a la cara no illuminada de la cèllula. Lobjectiu daquesta tesi és millorar les propietats de passivació del carbur de silici afegint els requisits indispensables en cèllules solars: uniformitat, transparència i propietats antireflectants, estabilitat a llarg termini i enfront altes temperatures. A part de les aplicacions tecnològiques també es pretèn entendre millor les propietats fonamentals de passivació. Els principals resultats són: - La passivació millora a mesura que sincrementa el gruix de la capa de a-SiC, fins arribar a una saturació a partir de 50 nm. El mecanisme responsable es una millor saturació dels defectes de la interficie amb hidrogen. Al contrari del que es pensava a priori, la càrrega ellèctrica emmagatzemada a la capa es manté constant amb el gruix. - Experiments amb corona charge indiquen que lorigen de la càrrega ellèctrica que produeix la passivació per efecte de camp es troba en la densitat destats a la interfície. - No ha estat possible trobar una capa tranparent (rica en carboni) amb bona passivació. La millor aproximació per combinar passivació més transparència és emprar dues capes, una molt prima rica en silici per passivar i laltra rica en carboni per aconseguir les propietats antireflectants adequades. Sha optimitzat el gruix de la capa rica en silici per aconseguir un.

Download or read book Amorphous and Crystalline Silicon Carbide and Related Materials written by Gary L. Harris and published by Springer. This book was released on 1989-03-08 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although silicon carbide has been used for more than half a century, its potential as a high-temperature, corrosion-resistant semiconductor has only recently begun to be exploited. Both crystalline and amorphous forms of SiC offer several advantages over Si, GaAs, and InP for high-frequency, high-power, and high-speed circuits. This volume contains reports on high-temperature SiC MOSFETs and MESFETs, secondary harmonic generation in SiC, a-SiC emitter heterojunction bipolar transistors, and bulk crystal growth of 6H-SiC. For newcomers to the field it provides an up-to-date review of technological developments in SiC and related materials, while specialists will find here recent references and new insights into materials for high-temperature, high-power, and high-speed circuit applications.

Download or read book Intrinsic and doped amorphous silicon carbide films for the surface passivation of silicon solar cells written by Dominik Suwito and published by . This book was released on 2011 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amorphous and Crystalline Silicon Carbide II written by Mahmud M. Rahman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains written versions of the papers presented at the Second Inter national Conference on Amorphous and Crystalline Silicon Carbide and Related Materials (ICACSC 1988), which was held at Santa Clara University on Decem ber 15 and 16, 1988. The conference followed the First ICACSC held at Howard University, Washington DC, in December 1987 and continued to provide an in ternational forum for discussion and exchange of ideas and results covering the current status of research on SiC and related materials. ICACSC 1988 attracted 105 participants from five countries. The substantial increase in the number of papers compared with the previous year is an indication of the growing interest in this field. Of the 45 papers presented at the conference, 36 refereed manuscripts are included in this volume, while the remaining 9 appear as abstracts. The six invited papers provide detailed reviews of recent results on amorphous and crystalline silicon carbide materials and devices, as well as diamond thin films. The volume is divided into six parts, each covering an important theme of the conference.

Download or read book Technology and Applications of Amorphous Silicon written by Robert A. Street and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives the first systematic and complete survey of technology and application of amorphous silicon, a material with a huge potential in electronic applications. The book features contributions by world-wide leading researchers in this field.

Download or read book Silicon Properties of crystalline silicon carbide Diodes Molecular species in the gas phase Amorphous silicon carbon alloys written by and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classic and Advanced Ceramics written by Robert B. Heimann and published by John Wiley & Sons. This book was released on 2010-04-16 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the author's lectures to graduate students of geosciences, physics, chemistry and materials science, this didactic handbook covers basic aspects of ceramics such as composition and structure as well as such advanced topics as achieving specific functionalities by choosing the right materials. The focus lies on the thermal transformation processes of natural raw materials to arrive at traditional structural ceramics and on the general physical principles of advanced functional ceramics. The book thus provides practice-oriented information to readers in research, development and engineering on how to understand, make and improve ceramics and derived products, while also serving as a rapid reference for the practitioner. The choice of topics and style of presentation make it equally useful for chemists, materials scientists, engineers and mineralogists.

Download or read book PECVD Amorphous Silicon Carbide SiC Layers for MEMS Applications written by Ciprian Iliescu and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Approaches for Preparing Thin Films of Amorphous Silicon for Photovoltaic Applications written by G. T. Hefter and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Amorphous and Crystalline Silicon Carbide IV written by Cary Y. Yang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon carbide and other group IV-IV materials in their amorphous, microcrystalline, and crystalline forms have a wide variety of applications.The contributions to this volume report recent developments and trends in the field. The purpose is to make available the current state of understanding of the materials and their potential applications. Eachcontribution focuses on a particular topic, such as preparation methods, characterization, and models explaining experimental findings. The volume also contains the latest results in the exciting field of SiGe/Si heterojunction bipolar transistors. The reader will find this book valuable as a reference source, an up-to-date and in-depth overview of this field, and, most importantly, as a window into the immense range of reading potential applications of silicon carbide. It is essential for scientists, engineers and students interested in electronic materials, high-speed heterojunction devices, and high-temperature optoelectronics.

Download or read book Amorphous and Crystalline Silicon Carbide IV written by Cary Y. Yang and published by Springer. This book was released on 1992-12-10 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon carbide and other group IV-IV materials in their amorphous, microcrystalline, and crystalline forms have a wide variety of applications.The contributions to this volume report recent developments and trends in the field. The purpose is to make available the current state of understanding of the materials and their potential applications. Eachcontribution focuses on a particular topic, such as preparation methods, characterization, and models explaining experimental findings. The volume also contains the latest results in the exciting field of SiGe/Si heterojunction bipolar transistors. The reader will find this book valuable as a reference source, an up-to-date and in-depth overview of this field, and, most importantly, as a window into the immense range of reading potential applications of silicon carbide. It is essential for scientists, engineers and students interested in electronic materials, high-speed heterojunction devices, and high-temperature optoelectronics.

Download or read book Advanced Silicon Materials for Photovoltaic Applications written by Sergio Pizzini and published by John Wiley & Sons. This book was released on 2012-06-07 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, the silicon feedstock for photovoltaic cells comes from processes which were originally developed for the microelectronic industry. It covers almost 90% of the photovoltaic market, with mass production volume at least one order of magnitude larger than those devoted to microelectronics. However, it is hard to imagine that this kind of feedstock (extremely pure but heavily penalized by its high energy cost) could remain the only source of silicon for a photovoltaic market which is in continuous expansion, and which has a cumulative growth rate in excess of 30% in the last few years. Even though reports suggest that the silicon share will slowly decrease in the next twenty years, finding a way to manufacture a specific solar grade feedstock in large quantities, at a low cost while maintaining the quality needed, still remains a crucial issue. Thin film and quantum confinement-based silicon cells might be a complementary solution. Advanced Silicon Materials for Photovoltaic Applications has been designed to describe the full potentialities of silicon as a multipurpose material and covers: Physical, chemical and structural properties of silicon Production routes including the promise of low cost feedstock for PV applications Defect engineering and the role of impurities and defects Characterization techniques, and advanced analytical techniques for metallic and non-metallic impurities Thin film silicon and thin film solar cells Innovative quantum effects, and 3rd generation solar cells With contributions from internationally recognized authorities, this book gives a comprehensive analysis of the state-of-the-art of process technologies and material properties, essential for anyone interested in the application and development of photovoltaics.

Download or read book Properties and Applications of Silicon Carbide written by Rosario Gerhardt and published by BoD – Books on Demand. This book was released on 2011-04-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, we explore an eclectic mix of articles that highlight some new potential applications of SiC and different ways to achieve specific properties. Some articles describe well-established processing methods, while others highlight phase equilibria or machining methods. A resurgence of interest in the structural arena is evident, while new ways to utilize the interesting electromagnetic properties of SiC continue to increase.