Characterization of defect clusters in compensated silicon solar cells

The presence of defect clusters in multicrystalline silicon – not only in compensated silicon – can influence the electronic properties of solar cells. This is due to the interfered further crystallization and an insufficient passivation of the defects in these regions. Three-dimensional plots, based on hundreds of electroluminescence images, allow an improved analysis of the defect clusters’ growth during crystallization. Furthermore, this allows vertical views from any angle which is otherwise only possible with destructive vertical cuts.

[1]  G. Hahn,et al.  Comparison of UMG materials : are ingot height independent solar cell efficiencies possible? , 2010 .

[2]  W. Kwapil,et al.  High net doping concentration responsible for critical diode breakdown behavior of upgraded metallurgical grade multicrystalline silicon solar cells , 2010 .

[3]  S. Riepe,et al.  Quality control using luminescence imaging in production of mcsilicon solar cells from umg feedstock , 2010, 2010 35th IEEE Photovoltaic Specialists Conference.

[4]  W. Kwapil,et al.  Cause of increased currents under reverse-bias conditions of upgraded metallurgical grade multicrystalline silicon solar cells , 2010, 2010 35th IEEE Photovoltaic Specialists Conference.

[5]  M. Wagner,et al.  Shunts, Diode Breakdown and High Reverse Currents in Multicrystalline Silicon Solar Cells , 2009 .

[6]  Otwin Breitenstein,et al.  Influence of Defects on Solar Cell Characteristics , 2009 .

[7]  Otwin Breitenstein,et al.  Hot spots in multicrystalline silicon solar cells: avalanche breakdown due to etch pits , 2009 .

[8]  Eduard Arzt,et al.  Observation of Giant Diffusivity Along Dislocation Cores , 2008, Science.

[9]  M. Pickett,et al.  Metal precipitation at grain boundaries in silicon: Dependence on grain boundary character and dislocation decoration , 2006 .

[10]  Markus Rinio.  Untersuchung der prozessabhängigen Ladungsträgerrekombination an Versetzungen in Siliziumsolarzellen , 2004 .

[11]  O. Lohne,et al.  DISLOCATION CLUSTERS IN MULTICRYSTALLINE SILICON , 2007 .