Method for laying seed crystals of mono-like crystal

A laying method, a single-crystal-like technology, applied in the direction of single crystal growth, chemical instruments and methods, crystal growth, etc., can solve problems such as lifting and unfavorable crystal quality.

Inactive Publication Date: 2018-03-02
JINKO SOLAR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is also a method of laying seed crystals in the prior art, leaving a certain gap between the two seed crystals, and the gap between the two seed crystals is filled with low ther

Method used

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  • Method for laying seed crystals of mono-like crystal
  • Method for laying seed crystals of mono-like crystal

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[0016] The core idea of ​​the present invention is to provide a method for laying similar single crystal seeds, which can eliminate the extrusion between the seed crystal blocks and reduce the defects between the seed crystal joints.

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] The laying method of the first type of single crystal seed crystal provided by the embodiment of the application is as follows figure 1 As shown, figure 1 This is a schematic diagram of the first type ...

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Abstract

The invention discloses a method for laying seed crystals of a mono-like crystal. The method comprises the step of placing seed crystals of a mono-like crystal into a crucible, reserving a gap with apreset width between every two adjacent seed crystals of the mono-like crystal, and placing a single-crystal ingot in each gap, wherein the growth speed of the single-crystal ingot is lower than the growth speed of the seed crystals of the mono-like crystal, and the height of the single-crystal ingot is lower than the remaining height of the seed crystals of the mono-like crystal after crystallization. With the method for laying the seed crystals of the mono-like crystal, the extrusion between the seed crystal ingots can be eliminated, and the defects between the seed crystal joints can be reduced.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cells, in particular to a laying method of a quasi-single crystal seed crystal. Background technique [0002] Quasi-single crystal is a directional solidification technology that adopts the laying of single crystal seed crystal at the bottom. The laying of seed crystal is one of the key steps of quasi-single crystal. The extrusion between seed crystals will cause defects at the joints of seed crystals. The defects will proliferate and extend along the crystal growth direction, resulting in a decrease in the quality of single crystals. Therefore, the control of defects at the joints of the seed crystals is a key factor to improve the quality of the crystals, and the elimination of extrusion between the seeds is the key to reducing the defects at the joints. key measures. [0003] The conventional seed crystal laying method is that two seed crystal blocks are closely arranged. The main purpose...

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Application Information

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IPC IPC(8): C30B11/14C30B28/06
CPCC30B11/14C30B28/06
Inventor 王全志李林东晏文勇欧子杨汪沛渊白枭龙邓清香肖贵云陈志军王海涛金浩
Owner JINKO SOLAR CO LTD
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