Author: Christian Stefano Schuster
Publisher: Springer
ISBN: 3319442783
Category : Science
Languages : en
Pages : 129
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Book Description
This thesis introduces a figure of merit for light trapping with photonic nanostructures and shows how different light trapping methods compare, irrespective of material, absorber thickness or type of nanostructure. It provides an overview of the essential aspects of light trapping, offering a solid basis for future designs. Light trapping with photonic nanostructures is a powerful method of increasing the absorption in thin film solar cells. Many light trapping methods have been studied, but to date there has been no comprehensive figure of merit to compare these different methods quantitatively. This comparison allows us to establish important design rules for highly performing structures; one such rule is the structuring of the absorber layer from both sides, for which the authors introduce a novel and simple layer-transfer technique. A closely related issue is the question of plasmonic vs. dielectric nanostructures; the authors present an experimental demonstration, aided by a detailed theoretical assessment, highlighting the importance of considering the multipass nature of light trapping in a thin film, which is an essential effect that has been neglected in previous work and which allows us to quantify the parasitic losses.
Author: Bhushan Lal Sopori
Publisher:
ISBN:
Category : Polycrystalline semiconductors
Languages : en
Pages : 52
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Book Description
Author: Roberto Murri
Publisher: Bentham Science Publishers
ISBN: 160805456X
Category : Technology & Engineering
Languages : en
Pages : 524
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Book Description
Silicon Based Thin Film Solar Cells explains concepts related to technologies for silicon (Si) based photovoltaic applications. Topics in this book focus on ‘new concept’ solar cells. These kinds of cells can make photovoltaic power production an economically viable option in comparison to the bulk crystalline semiconductor technology industry. A transition from bulk crystalline Si solar cells toward thin-film technologies reduces usage of active material and introduces new concepts based on nanotechnologies. Despite its importance, the scientific development and understanding of new solar cells is not very advanced, and educational resources for specialized engineers and scientists are required. This textbook presents the fundamental scientific aspects of Si thin films growth technology, together with a clear understanding of the properties of the material and how this is employed in new generation photovoltaic solar cells. The textbook is a valuable resource for graduate students working on their theses, young researchers and all people approaching problems and fundamental aspects of advanced photovoltaic conversion.
Author: Xianqin Meng
Publisher:
ISBN:
Category :
Languages : en
Pages : 132
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Book Description
Gratings are considered. The goal is to integrate such structures into ultra-thin film silicon photovoltaic solar cells, with a view to improve their conversion efficiency. First, a PCs assisted ultra-thin film crystalline silicon (c-Si) solar cell is designed optimized by using the Finite Different Time Domain (FDTD) approach. An increase over50% is achieved for the absorption, as integrated over the whole spectral range, by patterning a 2D PCs in the active Si layer. This enhancement is achieved by combining Slow Bloch modes and Fabry-Perot modes. In order to fabricate such solar cells, we developed a process based on Laser Holographic Lithography, Reactive Ion Etching and Inductivity Coupled Plasma etching. We have investigated the influence of the parameters taking part in these processes on the obtained patterns. Finally the optical and electrical properties of the devices have been characterized by our co-workers at IMEC, Belgium. Absorption measurements are in good agreement with the theoretical simulations. Moreover, the integrated absorption is tolerant with regard to the sunlight angle of incidence. The final fabricated 2D PCs patterned solar cell exhibits a 20% higher short circuit current (Jsc = 15mA/cm2) than the reference. Additionally, a more complex thin film c-Si solar cells integrating front and back diffraction gratings has been designed. Long wavelength absorption is increased thanks to the long period (750 nm) back grating, while the incident light reflection is reduced by using a short period (250 nm) front grating. A short-circuit current increase up to 30 mA/cm2 is predicted for this device, far above the 18 mA/cm2 value for the unpatterned reference These are first steps towards the development of a future generation of PC and diffraction grating assisted solar cells.
Author: Beddiaf Zaidi
Publisher: BoD – Books on Demand
ISBN: 1839699051
Category : Technology & Engineering
Languages : en
Pages : 114
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Book Description
Thin film photovoltaic-based solar modules produce power at a low cost per watt. They are ideal candidates for large-scale solar farms as well as building-integrated photovoltaic applications. They can generate consistent power, not only at elevated temperatures but also on cloudy, overcast days and at low sun angles.Thin film photovoltaics are second-generation solar cells produced by depositing one or more thin layers, or thin films, of photosensitive material on a suitable substrate such as glass, polymer, or metal. Thin film solar cells are based on various materials such as cadmium telluride (CdTe), copper indium gallium diselenide (CIGS), and amorphous thin film silicon (a-Si, TF-Si) are commercially used in several conventional and advanced technologies.
Author: Daniel Abou-Ras
Publisher: John Wiley & Sons
ISBN: 3527339922
Category : Science
Languages : en
Pages : 775
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Book Description
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.
Author: Christoph Richter
Publisher: Springer
ISBN: 9781461458050
Category : Science
Languages : en
Pages : 744
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Book Description
Gathering some 30 entries from the Encyclopedia of Sustainability Science and Technology, this book presents fundamental principles and technologies for sustainably harnessing solar energy. Covers photovoltaics, solar thermal energy, solar radiation and more.
Author: David Ginley
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 632
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Book Description
There has been considerable progress in the development of thin-film photovoltaic devices with new efficiency records and enhanced durability. These achievements are the result of significant advances in the fundamental understanding of the materials, interfaces and devices. With 18 countries represented, this truly international volume brings together engineers and researchers from academic, industrial and national laboratories worldwide to review different materials systems and address common issues and problems. A wide variety of topics related to the development of thin-film photovoltaic and related devices, including thick-film transistors and materials for flat-panel displays, are addressed. Areas of emphasis include materials synthesis, device fabrication and characterization, and modelling. Topics include: thin-film amorphous silicon devices; thin-film silicon devices; thin-film devices based on copper-indium diselenide; cadmium-telluride devices; transparent conductive oxides and related materials for thin-film devices; and novel concepts for thin-film photovoltaics.
Author: Saleem Hussain Zaidi
Publisher: Springer Nature
ISBN: 3030733793
Category : Technology & Engineering
Languages : en
Pages : 271
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Book Description
This book focuses on crystalline silicon solar cell science and technology. It is written from the perspective of an experimentalist with extensive hands-on experience in modeling, fabrication, and characterization. A practical approach to solar cell fabrication is presented in terms of its three components: materials, electrical, and optical. The materials section describes wafer processing methods including saw damage removal, texturing, diffusion, and surface passivation. The electrical section focuses on formation of ohmic contacts on n and p-doped surfaces. The optical section illustrates light interaction with textured silicon surfaces in terms of geometrical, diffractive and physical optics, transmission, and surface photovoltage (SPV) spectroscopy. A final chapter analyzes performance of solar cells, fabricated with a wide range of process parameters. A brief economic analysis on the merits of crystalline silicon-based photovoltaic technology as a cottage industry is also included./div This professional reference will be an important resource for practicing engineers and technicians working with solar cell and PV manufacturing and renewable energy technologies, as well as upper-level engineering and material science students. Presents a practical approach to solar cell fabrication, and characterization; Offers modular methodology with detailed equipment and process parameters supported by experimental results; Includes processing diagrams and tables for 16% efficient solar cell fabrication.
Author: Eric D. Jones
Publisher: Mrs Proceedings
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
Contains 49 papers from the December 1997 symposium. The contributions are organized into three sections devoted to silicon-, II-VI-, and III-V-based thin films, as well as a section on general thin films. A number of processes are dealt with, including VEST; ion-beam, plasma, laser, low temperature sputter, and metalorganic chemical vapor depositions; and various growth techniques. In addition, analysis and modeling methodologies are discussed. Annotation copyrighted by Book News, Inc., Portland, OR
