Download or read book Joint Development of Coated Conductor and Low Cost Thin Film Solar Cells Cooperative Research and Development Final Report CRADA Number CRD 007 213 written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: UES plans on developing CIGS thin films by using Metal Organic Deposition (MOD) technique as it is a low-cost, non-vacuum method for scale-up to large area PV modules. NREL will support UES, Inc. through expert processing, characterization and device fabrication. NREL scientists will also help develop a processing phase diagram which includes composition, film thickness, annealing temperature andambient conditions. Routine measurements of devices and materials will be done under NREL's core support project.
Download or read book Development of Electrodeposited CIGS Solar Cells written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: At present, most PV materials are fabricated by vacuum technologies. Some of the many disadvantages of vacuum technology are complicated instrumentation, material waste, high cost of deposition per surface area, and instability of some compounds at the deposition temperature. Solution-based approaches for thin-film deposition on large areas are particularly desirable because of the low capital cost of the deposition equipment, relative simplicity of the processes, ease of doping, uniform deposition on a variety of substrates (including interior and exterior of tubes and various nonplanar devices), and potential compatibility with high-throughput (e.g., roll-to-roll) processing. Of the nonsilicon solar photovoltaic device modules that have been deployed to date, those based on the n-CdS/p-CdTe is a leading candidate. Two features in the optical characteristics of CdTe absorber are particularly attractive for photovoltaic conversion of sunlight; (a) its energy bandgap of 1.5 eV, which provides an optimal match with the solar spectrum and thus facilitates its efficient utilization and (b) the direct mode of the main optical transition which results in a large absorption coefficient and turn permits the use of thin layer (1-2 um) of active material. Thin films of CdTe required for these devices have been fabricated by a variety of methods (e.g., vapor transport deposition, vacuum deposition, screen printing and close-spaced sublimation). Electrodeposition is another candidate deserves more attention. This project will focus on delivering low-cost, high efficiency electrodeposited CdTe-based device.
Download or read book Thin Film Solar Cells Derived from Sintered Semiconductor Quantum Dots Cooperative Research and Development Final Report CRADA number CRD 07 00226 written by and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NREL/Evident team will develop techniques to fabricate thin film solar cells where the absorption layers comprising the solar cells are derived from sintered semiconductor quantum dots.
Download or read book Flexible CdTe Solar Cells and Modules written by and published by . This book was released on 2016 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lucintech and NREL will collaborate to develop flexible CdTe solar cells on flexible glass using sputtering and other deposition technologies. This initial work will be conducted under the DOE funded Foundational Program to Advance Cell Efficiency (FPACE) 1 project, and the interaction with Lucintech will focus on scaling up and transferring the high efficiency cell processes to module production on a pilot line.
Download or read book Improving Silicon Solar Cell Efficiency Through Advanced Cell Processing Highly Uniform Texturing and Thinner Cells Cooperative Research and Development Final Report CRADA Number CRD 15 585 written by and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This CRADA is aimed at developing silicon solar cell technologies that can yield higher efficiency solar cells. Specifically, this CRADA cover three technologies: (i) developing a high temperature process for dissolution of oxygen precipitates, (ii) uniform texturization of diamond wire sawn wafers, and (iii) evaluation of techniques to bond techniques thin wafers and thin films.
Download or read book Development of Advanced CdTe Solar Cells Based on High Temperature Corning Glass Substrates Cooperative Research and Development Final Report CRADA Number CRD 10 373 written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: NREL has developed advanced processes for CdTe solar cells, but because of the temperature limitations of conventional soda lime glass, many of these processes have not been transferred to manufacturing. Corning is developing high temperature substrate glasses that are believed to be manufacturable and will lead to lower $/watt modules costs. The purpose of this CRADA is to evaluate these glassesin the advanced NREL processes. In addition, the CRADA seeks to develop manufacturable processes for transparent conductive oxide layers based on cadmium stannate.
Download or read book Development of ZnTe Cu Contacts for CdTe Solar Cells Cooperative Research and Development Final Report CRADA Number CRD 08 320 written by and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of the work at NREL was on the development of Cu-doped ZnTe contacts to CdTe solar cells in the substrate configuration. The work performed under the CRADA utilized the substrate device structure used at NREL previously. All fabrication was performed at NREL. We worked on the development of Cu-doped ZnTe as well as variety of other contacts such as Sb-doped ZnTe, CuxTe, and MoSe2.We were able to optimize the contacts to improve device parameters. The improvement was obtained primarily through increasing the open-circuit voltage, to values as high as 760 mV, leading to device efficiencies of 7%.
Download or read book Evaluation of Novel Semiconductor Materials Potentially Useful in Solar Cells Cooperative Research and Development Final Report CRADA number CRD 06 00172 written by and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluation of novel semiconductor materials potentially useful in solar cells. NREL will fabricate, test and analyze solar cells from EpiWorks' wafers produced in 2-3 separate growth campaigns. NREL will also characterize material from 2-3 separate EpiWorks material development campaigns. Finally, NREL will visit EpiWorks and help establish any necessary process, such as spectral CV measurementsand III-V on Si metalization processes and help validate solar cell designs and performance.
Download or read book Development of Black Silicon Antireflection Control and Passivation Technology for Commercial Application written by and published by . This book was released on 2014 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work involves the development of a commercial manufacturing process for both multicrystalline and monocrystalline solar cells that combines Natcore's patent pending passivation technology.
Download or read book Collaborative R D with First Solar on Understanding Performance Limitations in CdTe Project 1 CdTe Mods 0 10 13 14 A1 17 Cooperative Research and Development Final Report CRADA Number CRD 13 00507 written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This CRADA involves analyses on a variety of CdTe and CdTe-PV related materials, test structures, and solar cells produced at FSLR or NREL. Single-crystal (sx) material will be primarily MBE grown and provided by FSLR. Joint activities are focused on establishing the appropriate quality metrics as a basis for high performing sx devices and to study the dopability of the material. Polycrystalline (px) materials will be provided by NREL, FSLR, or fabricated jointly. Px activities are focused on the characterization of performance limiting mechanisms including bulk defects, grain boundaries, and the hetero-interface. A combination of growth, characterization, and theory will be applied. Analysis will include techniques that are well established in CdTe research at NREL (e.g., LIV/DIV/CV, AS/DLTS, LTPL, TRPL) as well as techniques that have not been widely applied to the PV part of CdTe technology (e.g., PCD, CL, uPL, SE).
Download or read book Is War Necessary for Economic Growth written by Vernon W. Ruttan and published by Oxford University Press. This book was released on 2006-01-05 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Military and defense-related procurement has been an important source of technology development across a broad spectrum of industries that account for an important share of United States industrial production. In this book, the author focuses on six general-purpose technologies: interchangeable parts and mass production; military and commercial aircraft; nuclear energy and electric power; computers and semiconductors; the INTERNET; and the space industries. In each of these industries, technology development would have occurred more slowly, and in some case much more slowly or not at all, in the absence of military and defense-related procurement. The book addresses three questions that have significant implications for the future growth of the United States economy. One is whether changes in the structure of the United States economy and of the defense-industrial base preclude military and defense-related procurement from playing the role in the development of advanced technology in the future, comparable to the role it has played in the past. A second question is whether public support for commercially oriented research and development will become an important source of new general-purpose technologies. A third and more disturbing question is whether a major war, or the threat of major war, will be necessary to mobilize the scientific, technical, and financial resources necessary to induce the development of new general-purpose technologies. When the history of United States technology development in the next half century is written, it will focus on incremental rather than revolutionary changes in both military and commercial technology. It will also be written within the context of slower productivity growth than of the relatively high rates that prevailed in the United States in the 1950s and 1960s or during the information technology bubble that began in the early 1990s. These will impose severe constraints on the capacity of the United States to sustain a global-class military posture and a position of leadership in the global economy.
Download or read book NADCA Product Specification Standards for Die Castings written by Diecasting Development Council (North American Die Casting Association) and published by North Amer Die Casting Assn. This book was released on 1994-01-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Semiconductor Metrology Program written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1995 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trafficking in Broken Hearts written by Edwin Sanchez and published by Broadway Play Publishing In. This book was released on 2014-12-15 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Papo, a tough-talking Puerto Rican hustler from the Bronx, meets Brian, a frightened young lawyer from the Midwest, Papo begins to glimpse the possibility of a romantic escape from his life on the streets. At the same time, Bobby, a 17-year-old runaway who has been repeatedly raped by his older brother, offers to take care of Papo and moves in with him in his fleabag hotel room. It is then when Papo suddenly finds his defenses melting and his heart torn in two directions. TRAFFICKING IN BROKEN HEARTS is a gritty, urban love story. "Playwright Edwin Sanchez makes a promising New York debut with TRAFFICKING IN BROKEN HEARTS, a grim, streetwise and bracingly compassionate work ... he convinces with the honesty of his writing and a canny, thoughtful grasp of his trio of characters. The playwright does an especially effective job in penning the gray shades of his characters ..." -Greg Evans, Variety
Download or read book Optical Technology Division written by and published by . This book was released on 2001 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Early Warning and Predictive Source water Monitoring Systems written by W. M. Grayman and published by American Water Works Association. This book was released on 2001 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lean Construction Management written by Shang Gao and published by Springer. This book was released on 2014-05-23 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a mixed research method adopted to assess and present the Toyota Way practices within construction firms in general and for firms in China specifically. The results of an extensive structured questionnaire survey based on the Toyota Way-styled attributes identified were developed and data collected from building professionals working in construction firms is presented. The quantitative data presented in the book explains the status quo of the Toyota Way-styled practices implemented in the construction industry, as well as the extent to which these attributes were perceived for lean construction management. The book highlights all the actionable attributes derived from the Toyota Way model appreciated by the building professionals, but alerts the readers that some attributes felled short of implementation. Further findings from in-depth interviews and case studies are also presented in the book to provide to readers an understanding how these Toyota Way practices can be implemented in real-life projects. Collectively, all the empirical findings presented in this book can serve to enhance understanding of Toyota Way practices in the lean construction management context. The readers are then guided through to understand the gaps between actual practice and Toyota Way-styled practices, and the measures that they may undertake to circumvent the challenges for implementation. The book also presents to readers the SWOT analysis that addresses the strengths, weaknesses, opportunities and threats towards the implementation of the Toyota Way in the construction industry. The book prescribes the Toyota Way model for use in construction firms to strategically implement lean construction management. The checklist presented in the book enables readers to draw lessons that may be used additionally as a holistic assessment tool for measuring the maturity of firms with respect to their Toyota Way implementation. Consequent to this, management would then be in a better position to develop plans for Toyota Way implementation by focusing on weak areas, strengthening them, and thus increasing the likelihood of success in the implementation of the Toyota Way. In a nutshell, this book provides a comprehensive and valuable resource for firms not only in the construction industry but also businesses outside of the construction sector to better understand the Toyota Way and how this understanding can translate to implementation of lean construction/business management to enhance profitability and survivability in an increasingly competitive global market place.
