Electrochemical Processes for Metallization of Novel Silicon Solar Cells PDF Download
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Author: Mathias Kamp
Publisher: Fraunhofer Verlag
ISBN: 9783839610558
Category : Science
Languages : en
Pages : 0
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Book Description
Within this work electrochemical processes for manufacturing of novel silicon solar cells are investigated. Direct plating of Ni and Al on n- and p- silicon is demonstrated by making use of solar cell characteristics. Homogenous Ni/Cu stacks are realized for bifacial and back contact solar cells, forming an excellent mechanical and electrical contact to silicon. For metallization of HIT solar cells, the plating behavior on ITO layers is studied. Additionally, plating processes on evaporated Al layers are developed and applied to back contact solar cells. By means of process optimization the plated metal stack on Al features sufficient adhesion and increases the lateral conductivity of the metal grid resulting in increased solar cell efficiency. An advanced metallization route for back contact solar cells which purposefully utilizes the different characteristics of the deposited metals (Al, Ni, Cu) is developed. The resulting metal stacks are characterized in detail using SEM, EDX and AES methods. Besides plating processes, local oxidizing processes for Al are established and combined with printing technologies to realize the metal contact separation for back contact solar cells.
Author: Mathias Kamp
Publisher: Fraunhofer Verlag
ISBN: 9783839610558
Category : Science
Languages : en
Pages : 0
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Book Description
Within this work electrochemical processes for manufacturing of novel silicon solar cells are investigated. Direct plating of Ni and Al on n- and p- silicon is demonstrated by making use of solar cell characteristics. Homogenous Ni/Cu stacks are realized for bifacial and back contact solar cells, forming an excellent mechanical and electrical contact to silicon. For metallization of HIT solar cells, the plating behavior on ITO layers is studied. Additionally, plating processes on evaporated Al layers are developed and applied to back contact solar cells. By means of process optimization the plated metal stack on Al features sufficient adhesion and increases the lateral conductivity of the metal grid resulting in increased solar cell efficiency. An advanced metallization route for back contact solar cells which purposefully utilizes the different characteristics of the deposited metals (Al, Ni, Cu) is developed. The resulting metal stacks are characterized in detail using SEM, EDX and AES methods. Besides plating processes, local oxidizing processes for Al are established and combined with printing technologies to realize the metal contact separation for back contact solar cells.
Author: Jonas Martin Bartsch
Publisher:
ISBN: 9783843902922
Category :
Languages : de
Pages : 289
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Book Description
Author: Vijay K. Kapur
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages : 60
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Book Description
Author: S. Saravanan
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Solar cell market is led by silicon photovoltaics and holds around 92% of the total market. Silicon solar cell fabrication process involves several critical steps which affects cell efficiency to large extent. This includes surface texturization, diffusion, antireflective coatings, and contact metallization. Among the critical processes, metallization is more significant. By optimizing contact metallization, electrical and optical losses of the solar cells can be reduced or controlled. Conventional and advanced silicon solar cell processes are discussed briefly. Subsequently, different metallization technologies used for front contacts in conventional silicon solar cells such as screen printing and nickel/copper plating are reviewed in detail. Rear metallization is important to improve efficiency in passivated emitter rear contact cells and interdigitated back contact cells. Current models on local Al contact formation in passivated emitter rear contact (PERC) cells are reviewed, and the influence of process parameters on the formation of local Al contacts is discussed. Also, the contact mechanism and the influence of metal contacts in interdigitated back contact (IBC) cells are reviewed briefly. The research highlights on metallization of conventional screen printed solar cells are compared with PERC and IBC cells.
Author: L. Nanis
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages : 40
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Book Description
Author: SRI International
Publisher:
ISBN:
Category : Solar batteries
Languages : en
Pages : 0
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Book Description
Author: Thorsten Dullweber
Publisher: IET
ISBN: 183953155X
Category : Technology & Engineering
Languages : en
Pages : 569
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Book Description
Metallization is a key step in manufacturing of efficient and reliable solar cells. Written by world-wide renowned experts, this work covers metallization technologies, before describing ongoing R&D activities for the most relevant silicon solar cells metallization technologies. Later chapters deal with aspects of solar cell modules.
Author: SRI International
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages : 0
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher:
ISBN: 9781725667488
Category :
Languages : en
Pages : 36
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Book Description
Silicon was produced by alternate pulse feeding of the reactants SiF4 gas and liquid sodium. The average temperature in the reactor could be controlled, by regulating the amount of reactant in each pulse. Silicon tetrafluoride gas was analyzed by mass spectrometry to determine the nature and amount of contained volatile impurities which included silicon oxyfluorides, sulfur oxyfluorides, and sulfur dioxide. Sodium metal was analyzed by emission spectrography, and it was found to contain only calcium and copper as impurities. Kapur, V. K. and Nanis, L. and Sanjurjo, A. Jet Propulsion Laboratory NASA-CR-153407, ERDA/JPL-954471-77/2, QPR-5 NAS7-100; JPL-955471; SRI PROJ. PYU-4980...
Author: Mathias Kamp
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Abstract: This work deals with a possibility to simplify the processing of back-contact back-junction solar cells. A novel metallization process without using any additional mask is presented. The main focus is set on the contact separation resulting in the interdigitated metal pattern. In case of using evaporated aluminum as contacting material to silicon, aluminum anodizing is a convenient process to convert electrically conductive aluminum to electrically isolating aluminum oxide. In the established processes in which anodizing of aluminum is used for aluminum structuring, masks are used to achieve local anodized areas. In order to make the contact separation process by anodizing more economic, several in-situ anodizing processes either using structured processing units or printing techniques are developed and tested. (C) 2015 The Authors. Published by Elsevier Ltd
