MacDonald, Daniel; Rougieux, Fiacre; Mansoulie, Yves; Tan, Jason; Paterson, David; Howard, Daryl; de Jonge, Martin; Ryan, Christopher G
A rapid scanning synchrotron-based X-ray fluorescence microprobe technique is applied to relatively impure crystalline silicon feedstock for solar cells. The results reveal the distributions of metallic impurities in the material over regions several millimetres in size, allowing scans across several grains. Relatively high concentrations of Fe, Cu and Zn were observed, with traces of Mn and Ni. The metals were mostly present as discrete particles up to 60mm in size, while Cu was more uniformly...[Show more]
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