Download or read book Investigation of the Microstructure of Cu In Ga Se2 Thin Films Used in High Efficiency Devices Preprint written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference paper describes the microstructure of Cu(In,Ga)Se2 (CIGS) films, as it transitioned from Cu-rich to In-rich composition, by transmission electron microscopy, and energy-dispersive X-ray spectroscopy. We find that the Cu-rich samples have larger grains than the In-rich samples, and they contain two structurally different forms of the CuxSe secondary phase. These samples also showsub-interfaces about 0.2 ..mu..m below the surface. The In-rich samples were almost void of these sub-interfaces.
Download or read book Microstructure of Surface Layers in Cu In Ga Se2 Thin Films written by and published by . This book was released on 2003 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In most Cu(In, Ga)Se2 thin films used for solar cells, there usually exist interfaces lying about 0.1 to 0.2 m below the surfaces. We report on a convergent-beam electron diffraction and energy-dispersive X-ray spectroscopy study of the microstructure and chemical composition of the surface region in Cu(In, Ga)Se2 thin films. We find that the surface region and the bulk are structurally similar, with no ordered defect chalcopyrite structure observed. However, their composition is slightly different, indicating that they can have different point-defect physics. Our results suggest that the subinterfaces and the bulk absorber may form homojunctions.
Download or read book Advanced Characterization Techniques for Thin Film Solar Cells written by Daniel Abou-Ras and published by John Wiley & Sons. This book was released on 2016-07-13 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on advanced characterization methods for thin-film solar cells that have proven their relevance both for academic and corporate photovoltaic research and development. After an introduction to thin-film photovoltaics, highly experienced experts report on device and materials characterization methods such as electroluminescence analysis, capacitance spectroscopy, and various microscopy methods. In the final part of the book simulation techniques are presented which are used for ab-initio calculations of relevant semiconductors and for device simulations in 1D, 2D and 3D. Building on a proven concept, this new edition also covers thermography, transient optoelectronic methods, and absorption and photocurrent spectroscopy.
Download or read book Materials Science and Engineering Technology written by Zhang Mei and published by Trans Tech Publications Ltd. This book was released on 2014-06-30 with total page 2484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected, peer reviewed papers from the 2014 International Conference on Materials Science and Engineering Technology (MSET 2014), June 28-29, 2014, Shanghai, China. The 422 papers are grouped as follows: Chapter 1: Polymers and Composites, Chapter 2: Ceramics and Functional Materials, Chapter 3: Films and Membranes, Chapter 4: Nanomaterials and Applied Nanotechnologies, Chapter 5: Materials for Energy Sources and Energy Supply, Chapter 6: Chemical Physics, Chapter 7: Materials and Technologies in Microelectronics, Chapter 8: Biomaterials, Biotechnologies and Pharmaceutics, Chapter 9: Materials and Technologies in Environmental Engineering, Chapter 10: Materials and Technologies of Chemical Industry, Chapter 11: Corrosion and Surface of Materials, Technologies of Coatings, Chapter 12: Alloys and Steels, Metallurgical Technologies, Chapter 13: Building Materials and Technologies in Construction, Chapter 14: Technologies and Materials in Oil Industry, Chapter 15: Methods and Devices of Measurements in Materials Engineering, Chapter 16: Technologies and Equipment for Manufacturing and Processing of Materials, Chapter 17: Research in Area of Applied Materials, Chapter 18: General Mechanical Engineering, Chapter 19: Mechatronics, Control and Automation, Chapter 20: Power Engineering, Chapter 21: Electronic Engineering, Chapter 22: Measurements, Data and Signal Processing, Computational Methods and Algorithms, Chapter 23: Communication and Information Technologies, Chapter 24: Product Design and Engineering Management, Chapter 25: Geophysical Research and Resources
Download or read book Recent Advances in Thin Film Photovoltaics written by Udai P. Singh and published by Springer Nature. This book was released on 2022-09-02 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides recent development in thin-film solar cells (TFSC). TFSC have proven the promising approach for terrestrial and space photovoltaics. TFSC have the potential to change the device design and produce high efficiency devices on rigid/flexible substrates with significantly low manufacturing cost. TFSC have several advantages in manufacturing compared to traditional crystalline Si-solar cells like less requirement of materials, can be prepared with earth’s abundant materials, less processing steps, easy to dispose, etc. Several universities/research institutes/industry in India and abroad are involved in the research area of thin-film solar cells. The book helps the readers to find the details about different thin-film technologies and its advancement at one place. Each chapter covers properties of materials, its suitability for PV applications, simple manufacturing processes and recent and past literature survey. The issues related to the development of high efficiency TFSC devices over large area and its commercial and future prospects are discussed.
Download or read book Investigation of Microstructural Defects in Cu In Ga Se2 Thin Films by Scanning Transmission Electron Microscopy written by Ekin Şimşek Sanlı and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highlights in Applied Mineralogy written by Soraya Heuss-Aßbichler and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-12-18 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: What can we learn from nature? The study of the physical, chemical and structural properties of well-known minerals in the geo- and biosphere creates new opportunities for innovative applications in technology, environment or medicine. This book highlights today’s research on outstanding minerals such as garnets used as components in all solid state batteries, delafossite formation during wastewater treatment, monazites for the immobilization of high level radioactive waste or hyroxylapatite as bioactive material for medical implant applications. Contents Part I: High-technology materials Lithium ion–conducting oxide garnets Olivine-type battery materials Natural and synthetic zeolites Microstructure analysis of chalcopyrite-type CuInSe2 and kesterite-type Cu2ZnSnSe4 absorber layers in thin film solar cells Surface-engineered silica via plasma polymer deposition Crystallographic symmetry analysis in NiTi shape memory alloys Part II: Environmental mineralogy Gold, silver, and copper in the geosphere and anthroposphere: can industrial wastewater act as an anthropogenic resource? Applied mineralogy for recovery from the accident of Fukushima Daiichi Nuclear Power Station Phosphates as safe containers for radionuclides Immobilization of high-level waste calcine (radwaste) in perovskites Titanate ceramics for high-level nuclear waste immobilization Part III: Biomineralization, biomimetics, and medical mineralogy Patterns of mineral organization in carbonate biological hard materials Sea urchin spines as role models for biological design and integrative structures Nacre: a biomineral, a natural biomaterial, and a source of bio-inspiration Hydroxylapatite coatings: applied mineralogy research in the bioceramics field A procedure to apply spectroscopic techniques in the investigation of silica-bearing industrial materials
Download or read book JJAP Letters written by and published by . This book was released on 1998 with total page 958 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 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AFM Based Microelectrical Characterization of Grain Boundaries in Cu In Ga Se2 Thin Films written by R. Noufi and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a direct measurement of two-dimensional potential distribution on the surface of Cu(In, Ga)Se2 thin films using a nanoscale electrical characterization of scanning Kelvin probe microscopy both in air and in ultra-high vacuum. The potential measurement reveals a higher surface potential or a smaller work function on grain boundaries (GBs) of the film than on the grain surfaces. This demonstrates the existence of a local built-in potential on GBs, and the GB is positively charged. The role of the built-in potential in device performance was further examined and found to be positive, by tuning Ga content or bandgap of the film. With increasing Ga content, the potential drops sharply in a Ga range of 28%-38%. Comparing the change in the built-in potential to the theoretical and experimental photoconversion efficiencies, we conclude that the potential plays a significant role in the device conversion efficiency of NREL's three-stage Cu(In, Ga)Se2 device.
Download or read book JJAP written by and published by . This book was released on 1999 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preferred Orientation in Polycrystalline Cu In Ga Se2 and Its Effect on Absorber Thin films and Devices written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work is to investigate physical properties of Cu(In, Ga)Se2 polycrystalline thin-films exhibiting a high degree of preferred orientation. Specifically, by using Na-free Cu(In, Ga)Se2 thin-films, it is intended to experimentally determine differences (if any) between films with a (110/102)-preferred orientation and films with a (112)-preferred orientation. The approach to the problem is a systematic comparative analysis of film and device properties in which the most significant variable is the preferred orientation of the Cu(In, Ga)Se2 polycrystalline absorbers. To complement the results of Na-free absorbers and devices, a microstructural analysis is presented on (110)-oriented high efficiency Cu(In, Ga)Se2 absorbers that are grown on standard Mo-coated soda-lime glass substrates.
Download or read book Pulsed Electrochemical Deposition of CuInSe2 and Cu In Ga Se2 Semiconductor Thin Films written by Sreekanth Mandati and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CuInSe2 (CIS) and Cu(In,Ga)Se2 (CIGS) semiconductors are the most studied absorber materials for thin films solar cells due to their direct bandgap and large absorption coefficient. The highly efficient CIGS devices are often fabricated using expensive vacuum based technologies; however, recently electrodeposition has been demonstrated to produce CIGS devices with high efficiencies and it is easily amenable for large area films of high quality with effective material use and high deposition rate. In this context, this chapter discusses the recent developments in CIS and CIGS technologies using electrodeposition. In addition, the fundamental features of electrodeposition such as direct current, pulse and pulse-reverse plating and their application in the fabrication of CIS and CIGS films are discussed. In conclusion, the chapter summarizes the utilization of pulse electrodeposition for fabrication of CIS and CIGS films while making a recommendation for exploring the group's unique pulse electroplating method.
Download or read book In Situ Investigation of the Rapid Thermal Reaction of Cu In Ga Precursors to Cu In Ga Se2 Thin film Solar Cell Absorbers written by Jan-Peter Bäcker and published by . This book was released on 2018* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanomaterials for Solar Cell Applications written by Sabu Thomas and published by Elsevier. This book was released on 2019-06-12 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials for Solar Cell Applications provides a review of recent developments in the field of nanomaterials based solar cells. It begins with a discussion of the fundamentals of nanomaterials for solar calls, including a discussion of lifecycle assessments and characterization techniques. Next, it reviews various types of solar cells, i.e., Thin film, Metal-oxide, Nanowire, Nanorod and Nanoporous materials, and more. Other topics covered include a review of quantum dot sensitized and perovskite and polymer nanocomposites-based solar cells. This book is an ideal resource for those working in this evolving field of nanomaterials and renewable energy. - Provides a well-organized approach to the use of nanomaterials for solar cell applications - Discusses the synthesis, characterization and applications of traditional and new material - Includes coverage of emerging nanomaterials, such as graphene, graphene-derivatives and perovskites
Download or read book Japanese Journal of Applied Physics written by and published by . This book was released on 1999 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
