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Investigations on Half Cells for Heterojunction Modules
H. Mehlich, F. Kirchhoff, M. Leonhardt, J. Hausmann, S. Burkhardt, A. Waltinger, M. König, M. Grimm, C. Belgardt, Y. Yao, B. Bonnet-Eymard, S. Beyer, M. Gragert, T. Söderström, P. Papet
New Materials and Concepts for Solar Cells and Modules
Subtopic: New Materials and Concepts for Modules
Event: 32nd European Photovoltaic Solar Energy Conference and Exhibition
Session: 1BV.5.31
ISBN: 3-936338-41-8
0,00 EUR
Document(s): poster


Improvements for silicon heterojunction cells (SHJ) have led to cell efficiencies higher than 22 % based on industry relevant processes. Furthermore, Smart Wire Connection Technology (SWCT) can increase the module performance. Using half cells increases the efficiency of a photovoltaic module additionally. The resistive power loss is defined as the sum of all electrical resistances multiplied by the squared current. Thus the application of half-cells roughly doubles the voltage and halves the current in the module if all cells are connected in series. The conduction losses in the cell interconnectors are decreased by this technique and consequently the output power of a module is boosted.