STRESS POTENTIAL ANALYSIS OF SOLAR WAFER AND CELLS DURING CONVEYOR BELT HANDLING

摘要

The thickness of photovoltaic substrates, such as wafers and cells has been decreased continuously inthe past. Further reductions are expected in future to take advantage of reduced material costs. The change ofmechanical characteristics results in new challenges for handling and transportation of substrates.To analyze and determine the potential of stress on the substrate, in a first step harming factors had to beidentified and suitable methods of measurement had to be worked out. Based on the knowledge of these influencingparameters, a test bed for investigation has been set up. Different measurement systems along the path oftransportation guarantee a proper set of sensor data. The first results of the ongoing investigations highlight theinfluence of transportation and the consecutive alignment on the substrates. It can be shown that not only the handlingbut also the transportation is dependent on several boundary conditions, i.e. thickness of substrates.