Acquisition equipment and method for acquiring nitrogen-doped silicon melt and manufacturing system of nitrogen-doped monocrystalline silicon

Abstract

Embodiments of the present disclosure disclose an acquisition equipment and a method for acquiring a nitrogen-doped silicon melt, and a system for manufacturing a nitrogen-doped monocrystalline silicon. The acquisition equipment comprises: a granulation apparatus, which is configured to prepare a plurality of polysilicon particles with uniform particles sizes using polysilicon feedstock blocks; a reaction apparatus, which is configured to enable the plurality of polysilicon particles and nitrogen gas to be subjected to chemical reaction to obtain a plurality of reaction particles, wherein silicon nitride is formed in surface layer of each of the plurality of polysilicon particles by the chemical reaction such that each of the plurality of reaction particles includes a polysilicon core and a silicon nitride coating on the polysilicon core; a melting apparatus, which is configured to melt the plurality of reaction particles to obtain the nitrogen-doped silicon melt comprising silicon atoms and nitrogen atoms.