Numerical studies on a type of mechanical stirring in directional solidification method of multicrystalline silicon for photovoltaic applications

2012 ◽  
Vol 360 ◽  
pp. 76-80 ◽  
Author(s):  
S. Dumitrica ◽  
D. Vizman ◽  
J.-P. Garandet ◽  
A. Popescu
Keyword(s):  
Directional Solidification ◽  
Multicrystalline Silicon ◽  
Mechanical Stirring ◽  
Numerical Studies ◽  
Photovoltaic Applications

scholarly journals Iron Management in Multicrystalline Silicon through Predictive Simulation: Point Defects, Precipitates, and Structural Defect Interactions

2013 ◽  
Vol 205-206 ◽  
pp. 15-25 ◽  
Author(s):  
Jasmin Hofstetter ◽  
David P. Fenning ◽  
Douglas M. Powell ◽  
Ashley E. Morishige ◽  
Tonio Buonassisi
Keyword(s):  
Iron Concentration ◽  
Iron Silicide ◽  
Multicrystalline Silicon ◽  
Temperature Profiles ◽  
Photovoltaic Applications ◽  
High Temperature Processing ◽  
High Concentrations ◽  
Defect Interactions ◽  
Simulation Point ◽  
Iron Precipitates

In multicrystalline silicon for photovoltaic applications, high concentrations of iron are usually found, which deteriorate material performance. Due to the limited solubility of iron in silicon, only a small fraction of the total iron concentration is present as interstitial solute atoms while the vast majority is present as iron silicide precipates. The concentration of iron interstitials can be effectively reduced during phosphorus diffusion gettering (PDG), but this strongly depends on the size and density of iron precipitates, which partly dissolve during high-temperature processing. The distribution of precipitated iron varies along the height of a mc-Si ingot and is not significantly reduced during standard PDG steps. However, the removal of both iron interstitials and precipitates can be enhanced by controlling their kinetics through carefully engineered time-temperature profiles, guided by simulations.

scholarly journals On the impact of twinning on the formation of the grain structure of multi-crystalline silicon for photovoltaic applications during directional solidification

2015 ◽  
Vol 418 ◽  
pp. 38-44 ◽  
Author(s):  
Thècle Riberi-Béridot ◽  
Nathalie Mangelinck-Noël ◽  
Amina Tandjaoui ◽  
Guillaume Reinhart ◽  
Bernard Billia ◽  
...  
Keyword(s):  
Directional Solidification ◽  
Crystalline Silicon ◽  
Grain Structure ◽  
Photovoltaic Applications ◽  
The Impact

Investigation of Microdefects in Multicrystalline Silicon for Photovoltaic Applications

1995 ◽  
Vol 47-48 ◽  
pp. 449-454 ◽  
Author(s):  
M. Werner ◽  
Eicke R. Weber ◽  
Scott A. McHugo ◽  
H. Hieslmair ◽  
K.L. Chapman
Keyword(s):  
Multicrystalline Silicon ◽  
Photovoltaic Applications
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