https://www.csp.fraunhofer.de/en/areas-of-research/crystallization/Float-Zone-Solar-Cells-Low-Cost-Feed-Material.html
High-Efficiency Silicon Float-Zone Solar-Cells from Low-Cost Feed-Material
high efficiencyfloat zonesolar cells
https://impact.ornl.gov/en/publications/silicon-float-zone-process-with-a-weak-transverse-magnetic-field-/
Silicon float zone process with a weak transverse magnetic field and crystal rotation - Oak Ridge...