Polycrystalline silicon ribbons for solar cells prepared by fast cooling

Abstract

Experiments on the production of 0.1 mm thick polycrystalline silicon ribbons by jet casting and flow casting are reported. The processes are described with models for heat transport and momentum transport. Attention is paid to process stability. Grain growth, which is necessary for solar cell applications, has been studied. The activation energy for grain growth amounted to (4.4 ± 0.7) eV.