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Author: Curtis Michael Anderson Publisher: ISBN: 9780549839354 Category : Languages : en Pages : 236
Book Description
This thesis is concerned with the production of silicon thin films for photovoltaic applications. Much research has been carried out to find a stable, more efficient alternative to amorphous silicon, resulting in a number of various amorphous/crystalline mixed-phase film structures with properties superior to amorphous silicon. This thesis work details a completely new approach to mixed-phase film deposition, focusing on the fast crystallization of these films.
Author: Curtis Michael Anderson Publisher: ISBN: 9780549839354 Category : Languages : en Pages : 236
Book Description
This thesis is concerned with the production of silicon thin films for photovoltaic applications. Much research has been carried out to find a stable, more efficient alternative to amorphous silicon, resulting in a number of various amorphous/crystalline mixed-phase film structures with properties superior to amorphous silicon. This thesis work details a completely new approach to mixed-phase film deposition, focusing on the fast crystallization of these films.
Author: Taekon Kim Publisher: ISBN: Category : Languages : en Pages :
Book Description
ABSTRACT: Crystallization of amorphous Si (a-Si) thin film has received extensive interest for their attractive applications into Si thin film transistors and Si based solar cells. Among various crystallization techniques, Solid phase crystallization (SPC) and Excimer laser crystallization (ELC) were investigated. Firstly, Solid phase crystallization (SPC) of amorphous silicon thin films deposited by the DC magnetron sputtering system with a modification in nucleation step was investigated at low temperature. The thin film consists of polycrystalline nanoparticles embedded in an amorphous matrix which can act as nuclei during crystallization, resulting in a lower thermal energy for the nucleation. The lowering energy barrier for nucleation would shorten the transition time from amorphous into polycrystalline silicon resulting from the reduction of incubation time and also lower the processing temperature spontaneously. In addition, a comprehensive study of the growth mechanism of the sputtered amorphous silicon thin films is presented during annealing. Samples were prepared with various substrate temperatures and RF power in order to optimize the crystallization of a-Si after the deposition. Also, the effects of annealing condition were examined. Low pressure N2 ambient during SPC promoted crystallization of a-Si thin films and the crystallinity. The low pressure annealing had a large impact on the crystallinity and growth behavior of subsequent films.
Author: Virginia Chu Publisher: Cambridge University Press ISBN: 9781558999497 Category : Technology & Engineering Languages : en Pages : 0
Book Description
Thin films of amorphous nano-, micro- and polycrystalline silicon, and related alloys, are used in active-matrix liquid crystal displays, solar cells, digital imagers and scanners. These products make large-area electronics the fastest growing semiconductor technology today and are encouraging further research on materials and devices. The success of amorphous silicon and polysilicon materials in commercial products is the driving force for the topic being one of the longest-running symposia and proceedings series of the Materials Research Society, providing excellent forums for reporting research results, exchanging ideas, and discussing scientific and technological issues. This volume, the most recent in the series, focuses on: defects and metastability; solar cells; alloys; crystallization and crystallization techniques; micro- and nanocrystalline silicon; thin-film growth; flexible substrates; novel applications; thin-film transistors; imagers and sensors; electronics and flexible substrates; electronic properties and metastability; structural properties; and nanocrystals, nanoclusters and nanowires.
Author: Yitzhak Mastai Publisher: BoD – Books on Demand ISBN: 9535121251 Category : Science Languages : en Pages : 374
Book Description
In nearly all process industries, crystallization is used at some stage as a method of production, purification or recovery of solid materials. In recent years, a number of new applications have also come to rely on crystallization processes such as the crystallization of nano and amorphous materials. The articles in this book have been contributed by some of the most respected researchers in this area and cover the frontier areas of research and developments in crystallization processes. Divided into three sections, this book provides the latest research developments in many aspects of crystallization including the crystallization of biological macromolecules and pharmaceutical compounds, the crystallization of nanomaterials and the crystallization of amorphous and glassy materials. This book is of interest to both fundamental research and practicing scientists and will prove invaluable to all chemical engineers and industrial chemists in process industries, as well as crystallization workers and students in industry and academia.
Author: Robert W. Collins Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 760
Book Description
This book continues the long-standing and highly successful series on amorphous silicon science and technology. The opening article honors the pioneering use of photons to probe silicon films and provides an historical overview of optical absorption for studies of the Urbach edge and disorder. Additional invited presentations focus on new approaches for the fabrication of higher stability amorphous silicon-based materials and solar cells, and on the characterization of materials and cells both structurally and electronically. The book includes topics relevant to solar cells, including the role of hydrogen in metastability phenomena and deposition processes, and the application of atomistic material simulations in elucidating film growth mechanisms and structure as characterized by in situ probes. Chapters are devoted to nanostructures, such as quantum dots and wires, and to nano/microcrystalline and poly/single crystalline films, the latter involving new concepts in crystalline grain growth and epitaxy. Device applications are also highlighted, such as thin-film transistors, solar cells, and image sensors, operable on the meter scale, to memories, operable on the nanometer scale.
Author: Materials Research Society. Meeting Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 776
Book Description
This book celebrates 20 years of MRS symposia on the topic of amorphous silicon. Contributors showed that the simplified theories developed to explain the limited experimental information available in the early eighties have spurred more sophisticated experimentation - either refining the early understanding or making it irrelevant. The differences of opinion that continue to exist and emerge are probably the hallmark of the amazing vitality of this field. Applications range from 'mature' thin-film transistors, solar cells and image sensors, to the 'emerging' possibility of erbium-doped nanocrystalline silicon-based materials for lasers and amorphous silicon quantum dots for luminescent devices. The book discusses material characterization, growth processes and devices. Each chapter is further subdivided into sections that group papers around common themes. Topics include: nanomaterials; electronic structure; metastable effects; understanding of growth processes; laser-induced crystallization; metal-induced crystallization; other growth techniques; newer devices; solar cells and thin-film transistors.
Author: Robert W. Collins Publisher: Cambridge University Press ISBN: 9781107413184 Category : Technology & Engineering Languages : en Pages : 1110
Book Description
This book, first published in 2001, provides an international forum to exchange research results on topics ranging from silicon thin-film physics and chemistry, to novel device design and engineering. It covers all aspects of hydrogenated amorphous silicon (a-Si:H) science and technology, and is the fourth consecutive volume in the series to cover heterogeneous silicon film materials, including the nanocrystalline, microcrystalline, and polycrystalline films. A special 'Millennium Session' celebrating the most important achievements of the last three decades in the field of amorphous and microcrystalline silicon thins films, is featured. Topics include: amorphous film growth and properties; nanocrystalline/microcrystalline film growth and properties; ordering, ordering transitions and photocrystalline films: polycrystalline films, epitaxial growth and properties; catalytic/hot-wire CVD - amorphous to polycrystalline films; implantation, annealing and crystallization; structure and hydrogen; band, band tails and defect states; metastability and equilibration; thin-film transistors, displays and imagers; thin-film solar cells and solar-cell structures; amorphous silicon detectors and other devices; and heterogeneous silicon transport and device applications.
Author: Curtis Michael Anderson
Author: Curtis Michael Anderson
Author: Taekon Kim
Author: Virginia Chu
Author: Andrew Flewitt
Author: Yitzhak Mastai
Author: Robert W. Collins
Author: Siri Suzanne Thompson
Author: Materials Research Society. Meeting
Author: Arokia Nathan
Author: Robert W. Collins