Anti-reflection and Light Trapping in c-Si Solar Cells PDF Download
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Author: Chetan Singh Solanki
Publisher: Springer
ISBN: 9811047715
Category : Technology & Engineering
Languages : en
Pages : 210
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Book Description
This book offers essential insights into c-Si based solar cells and fundamentals of reflection, refraction, and light trapping. The basic physics and technology for light trapping in c-Si based solar cells are covered, from traditional to advanced light trapping structures. Further, the book discusses the latest developments in plasmonics for c-Si solar cell applications, along with their future scope and the requirements for further research. The book offers a valuable guide for graduate students, researchers and professionals interested in the latest trends in solar cell technologies.
Author: Chetan Singh Solanki
Publisher: Springer
ISBN: 9811047715
Category : Technology & Engineering
Languages : en
Pages : 210
Get Book Here
Book Description
This book offers essential insights into c-Si based solar cells and fundamentals of reflection, refraction, and light trapping. The basic physics and technology for light trapping in c-Si based solar cells are covered, from traditional to advanced light trapping structures. Further, the book discusses the latest developments in plasmonics for c-Si solar cell applications, along with their future scope and the requirements for further research. The book offers a valuable guide for graduate students, researchers and professionals interested in the latest trends in solar cell technologies.
Author: Chetan Singh Solanki
Publisher:
ISBN: 9789811047725
Category : Silicon solar cells
Languages : en
Pages :
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Book Description
This book offers essential insights into c-Si based solar cells and fundamentals of reflection, refraction, and light trapping. The basic physics and technology for light trapping in c-Si based solar cells are covered, from traditional to advanced light trapping structures. Further, the book discusses the latest developments in plasmonics for c-Si solar cell applications, along with their future scope and the requirements for further research. The book offers a valuable guide for graduate students, researchers and professionals interested in the latest trends in solar cell technologies.
Author: Inès Massiot
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Reducing the absorber thickness is an attractive solution to decrease the production cost of solar cells. Furthermore, it allows to reduce the amount of material needed and improve the current collection in the cell. This thesis has been focused on the design of nanostructures to enhance light absorption in very small semiconductor volumes in order to achieve efficient ultra-thin solar cells. First, we have proposed an original light-trapping concept for ultra-thin amorphous silicon (a-Si:H) solar cells. A one-dimensional metallic grating is patterned on the front surface of the cell deposited on a metallic mirror. Broadband multi-resonant absorption has been demonstrated for both light polarizations. The metallic grating is also used as an alternative transparent electrode in order to reduce optical losses in the front contact. A detailed analysis of the multi-resonant absorption mechanism has been carried out through numerical calculations. The fabrication and optical characterization of ultra-thin a-Si:H solar cells with metallic gratings have validated the multi-resonant approach.Second, we have proposed a design with a two-dimensional metallic grid as a resonant front contact for very thin (25 nm) gallium arsenide (GaAs) layers. We have shown through the design and fabrication of a proof-of-concept structure the potential of metallic nanogrids to confine efficiently light absorption with an ultra-thin GaAs layer.Finally, advanced light-trapping structures could also allow a thickness reduction of crystalline silicon wafers of a factor 20 to 100 with respect to state-of-the-art cells. We have developed a process to transfer micron-thick epitaxial crystalline silicon (c-Si) layers onto a low-cost host substrate. Inverted nanopyramids have also been fabricated in crystalline silicon in order to achieve a broadband anti-reflection effect. It opens promising perspectives towards the realization of double-sided nanopatterned ultra-thin c-Si cells.
Author: Baldev Raj
Publisher: John Wiley & Sons
ISBN: 3527696113
Category : Technology & Engineering
Languages : en
Pages : 1487
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Book Description
Dieses Referenzwerk in drei handlichen Bänden bietet einen detaillierten Überblick über Anwendungen der Nanotechnologie im Bereich Nachhaltigkeit in der Energieversorgung. Der erste Band dieses klar strukturierten Nachschlagewerks behandelt nach der Einleitung die Themen Energieerzeugung, erneuerbare Energien, Energiespeicherung, Energieverteilung sowie Energieumwandlung und Energy-Harvesting. Im zweiten Band werden auf Nanotechnologie basierte Materialen, Energieeinsparung und -management, technologische und urheberrechtlich relevante Fragen, Märkte und Umweltsanierung erörtert. Der dritte Band wirft einen Blick in die Zukunft, auf technologische Fortschritte und gibt Empfehlungen. Ein wichtiges Handbuch für alle Experten auf diesem Gebiet, von Forschern und Ingenieuren im wissenschaftlichen Bereich bis hin zu Entwicklern in der Industrie.
Author: Stephen J. Fonash
Publisher: Elsevier
ISBN: 0124166377
Category : Technology & Engineering
Languages : en
Pages : 76
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Book Description
New Approaches to Light Trapping in Solar Cell Devices discusses in detail the use of photonic and plasmonic effects for light trapping in solar cells. It compares and contrasts texturing, the current method of light-trapping design in solar cells, with emerging approaches employing photonic and plasmonic phenomena. These new light trapping methods reduce the amount of absorber required in a solar cell, promising significant cost reduction and efficiency. This book highlights potential advantages of photonics and plasmonics and describes design optimization using computer modeling of these approaches. Its discussion of ultimate efficiency possibilities in solar cells is grounded in a review of the Shockley-Queisser analysis; this includes an in-depth examination of recent analyses building on that seminal work.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Light trapping plays an important role to achieve high short circuit current density (Jsc) and high efficiency for amorphous/crystalline Si heterojunction solar cells. Si heterojunction uses hydrogenated amorphous Si for emitter and back contact. This structure of solar cell posses highest open circuit voltage of 0.747 V at one sun for c-Si based solar cells. It also suggests that over 25%record-high efficiency is possible with further improvement of Jsc. Light trapping has two important tasks. The first one is to reduce the surface reflectance of light to zero for the solar spectrum that Si has a response. The second one is to increase the effective absorption length to capture all the photon. For Si heterojunction solar cell, surface texturing, anti-reflectance indium tinoxides (ITO) layer at the front and back are the key area to improve the light trapping.
Author: Martin A. Green
Publisher:
ISBN: 9780858235809
Category : Photovoltaic power generation
Languages : en
Pages : 274
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Book Description
Author: Javaneh Boroumand Azad
Publisher:
ISBN:
Category :
Languages : en
Pages : 99
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Book Description
This dissertation presents numerical and experimental studies of a unified light trapping approach that is extremely important for all practical solar cells. A 2D hexagonal Bravais lattice diffractive pattern is studied in conjunction with the verification of the reflection mechanisms of single and double layer anti-reflective coatings in the broad range of wavelength 400 nm - 1100 nm. By varying thickness and conformity, we obtained the optimal parameters which minimize the broadband reflection from the nanostructured crystalline silicon surface over a wide range of angle 0°-65°. While the analytical design of broadband, angle independent anti-reflection coatings on nanostructured surfaces remains a scientific challenge, numerical optimization proves a viable alternative, paving the path towards practical implementation of the light trapping solar cells. A 3 [micrometer] thick light trapping solar cell is modeled in order to predict and maximize combined electron-photon harvesting in ultrathin crystalline silicon solar cells. It is shown that the higher charge carrier generation and collection in this design compensates the absorption and recombination losses and ultimately results in an increase in energy conversion efficiency. Further, 20 [micrometer] and 100 [micrometer] thick functional solar cells with the light trapping scheme are studied. The efficiency improvement is observed numerically and experimentally due to photon absorption enhancement in the light trapping cells with respect to a bare cell of same thickness.
Author: W.R. Fahrner
Publisher: Trans Tech Publications Ltd
ISBN: 3038131024
Category : Technology & Engineering
Languages : en
Pages : 208
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Book Description
The world of today must face up to two contradictory energy problems: on the one hand, there is the sharply growing consumer demand in countries such as China and India. On the other hand, natural resources are dwindling. Moreover, many of those countries which still possess substantial gas and oil supplies are politically unstable. As a result, renewable natural energy sources have received great attention. Among these, solar-cell technology is one of the most promising candidates. However, there still remains the problem of the manufacturing costs of such cells. Many attempts have been made to reduce the production costs of conventional solar cells (manufactured from monocrystalline silicon using diffusion methods) by instead using cheaper grades of silicon, and simpler pn-junction fabrication. That is the hero of this book; the heterojunction solar cell.
Author: CHETAN SINGH SOLANKI
Publisher: PHI Learning Pvt. Ltd.
ISBN: 8120351118
Category : Technology & Engineering
Languages : en
Pages : 541
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Book Description
This thoroughly revised text, now in its third edition, continues to provide a detailed discussion on all the aspects of solar photovoltaic (PV) technologies from physics of solar cells to manufacturing technologies, solar PV system design and their applications. The Third Edition includes a new chapter on “Advances in c-Si Cell Processes Suitable for Near Future Commercialization” (Chapter 8) to introduce the technological advancement in the commercial production to keep the readers up to date. Organized in three parts, Part I introduces the fundamental principles of solar cell operation and design, Part II explains various technologies to fabricate solar cells and PV modules and Part III focuses on the use of solar photovoltaics as part of the system for providing electrical energy. In addition to this, numerous chapter-end exercises are given to reinforce the understanding of the subject. The text is intended for the undergraduate and postgraduate students of engineering for their courses on solar photovoltaic technologies and renewable energy technologies. The book is of immense use for teachers, researchers and professionals working in the photovoltaic field. In a nutshell, this book is an absolute must-read for all those who want to understand and apply the basics behind photovoltaic devices and systems.
