Mold and method for laying monocrystal-like seed crystals

Abstract

The invention discloses a mold and a method for laying monocrystal-like seed crystals. The mold comprises a mold body. The size of the mold body is matched with the sizes of crucibles; a mounting portion is arranged on the mold body, the size of the mounting portion is matched with the sizes of monocrystal seed crystals, and the monocrystal seed crystals can penetrate the mounting portion when laid at the bottoms of the crucibles. According to the technical scheme, the mold and the method have the advantages that the mold comprises the mold body, the size of the mold body is matched with the sizes of the crucibles, the mounting portion is arranged on the mold body, the size of the mounting portion is matched with the sizes of the monocrystal seed crystals, the monocrystal seed crystals canpenetrate the mounting portion, central regions in which the monocrystal seed crystals are about to be laid can be quickly determined by the aid of the mold body, accordingly, the spent laying time can be shortened, and the laying efficiency can be improved; the monocrystal seed crystals further can be accurately laid in the central regions of the crucibles as much as possible by the aid of the mold body, accordingly, laying deviation of the monocrystal seed crystals can be reduced, and the proportions of monocrystals in monocrystal-like silicon briquettes can be increased.

Description

technical field [0001] The invention relates to the technical field of solar cells, and more specifically, to a laying mold and method for similar single crystal seed crystals. Background technique [0002] In the photovoltaic industry, solar cells are dominated by crystalline silicon cells. Among them, quasi-single crystal has attracted attention because the production cost is lower than that of single crystal, and the conversion efficiency of photovoltaic cells prepared by it is higher than that of polycrystalline photovoltaic cells. [0003] Before ingot casting of similar single crystals, the bottom of the crucible needs to be covered with single crystal seed crystals, and the gap between the single crystal seed crystals and the crucible is filled with silicon material, and then the subsequent ingot casting process is carried out. However, it is necessary to constantly confirm the distance between the single crystal seed crystal and the inner wall of the crucible during...

AI Technical Summary

Problems solved by technology

However, it is necessary to constantly confirm the distance between the single crystal seed crystal and the inner wall of the crucible during the laying process, so as to ensure that the single crystal seed crystal can be laid in the central area of ​​the crucible as much as possible, which will make the laying time longer and the laying efficiency lower

And in the process of laying, the distance between the single crystal seed crystal and the inner wall of the crucible will be unequal, that is, the laying deviation will occur.

Images