The companies of the photovoltaic industry have experienced considerable growth in recent years. And further growth is forecasted for the coming years. By now, nearly two million single photovoltaic (PV) installations generate electricity from sunlight around the world. Thereby, the wafer-based PV products have a market share of about 80-85%. The interim shortage of silicon and the increasing cost pressure in the market give rise to ever thinner and larger wafers. Thus, the "PV Roadmap for Crystalline Silicon" of the German cell producers expects an average wafer thickness of 100 µm until 2020 and the next generation of wafer thickness in 2015. This trend brings about new challenges for the PV industry: due to the manual and automated handling in the manufacturing the silicon-based wafers are exposed to mechanical stress. If the wafers, however, become ever thinner they lose their mechanical stability and might form cracks when exposed to huge forces during the handling. These cracks, however, cause a higher breakage rate and are one of the main reasons for breakdowns of the finished modules. The damage-free handling of the very fragile silicon wafers will gain in importance due to the expected increase in the throughput. Therefore, the handling systems and components must not only handle the sensitive substrates as gently as possible but also with high speed and precision in the µm range. For this purpose, new adjusted handling components are required. This thesis aims at making a contribution to the optimal selection of handling components for the photovoltaic industry. The primary target is the development of an objective and vendor-independent evaluation procedure for grippers especially used in the cell and module manufacturing. The procedure to be developed should be suitable for cell, equipment and machine manufacturers as well as for component suppliers. Furthermore, the procedure should be applicable to identical and variable gripping principles. The result of the method should be the optimal decision guidance for the user and should enable an adequate and neutral classification of the tested gripper.


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    Titel :

    Verfahren zur Bewertung von Greifern für Photovoltaik-Wafer


    Beteiligte:

    Erscheinungsdatum :

    2014



    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Deutsch




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