Production method and control device for developing single crystal bar in square column body

A production method and technology for single crystal rods are applied in the field of production and control devices for growing square columnar single crystal rods, and can solve problems such as uncontrollable direct growth into square columnar single crystal rods and the like.

Inactive Publication Date: 2007-12-26
马明涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control device completes the growth control of cylindrical single crystals, and cannot control the direct growth into square cylindrical single crystal rods.

Method used

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  • Production method and control device for developing single crystal bar in square column body
  • Production method and control device for developing single crystal bar in square column body
  • Production method and control device for developing single crystal bar in square column body

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Embodiment Construction

[0023] Referring to Fig. 1, 2, 3, the control device of the present invention includes a seed crystal holder 1 and a rotary disk 2 that drives the seed crystal holder 1 to rotate, and a top half of the seed crystal holder 1 is provided with Axial keyway 1-1, a pin key 3 is provided on the holder hole in the center of the rotating disk 2, the seed crystal holder 1 and the rotating disk 2 are connected together through the keyway 1-1 and the pin key 3 , the use of this connection structure can not affect the axial up and down movement of the clamper 1 while rotating. In order to drive the seed crystal holder to move up and down, the upper end of the seed crystal holder 1 has a flat tooth structure 1-2, and a rotating disk 2 is provided to drive the seed crystal holder to move up and down. Servo drive motor 5, the torque output shaft of the servo drive motor 5 is connected with a gear 6, which meshes with the flat tooth structure 1-2 on the upper end of the seed crystal holder. ...

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Abstract

This invention discloses method and apparatus for growing cuboid single crystal rod. The apparatus comprises a square frame mold besides conventional cylindrical single crystal rod growth apparatus, and the square frame mold is integrated with the seed crystal rotation device, which can ensure synchronous rotation of the two. The method utilizes a system control computer for single crystal furnace to control synchronous drop of the square frame mold and the molten raw material level, which can ensure a constant distance between the square frame mold and the molten raw material level. After sliced, the cuboid single crystal rod can be processed into square single crystal chips. The square single crystal chips can be used in solar cells, and have such advantages as low polysilicon raw material consumption, no void of solar cell illumination area, high utility of solar cell illumination area, no boundary material re-melting, and low energy consumption for boundary material.

Description

Technical field [0001] The invention relates to a production method and device for growing a single crystal rod, in particular to a production method and a control device for growing a square column single crystal rod. Background technique [0002] Single crystal materials include single crystal silicon, single crystal germanium, sapphire, gallium arsenide, etc. Among them, single crystal silicon is the most commonly used. It is a semiconductor material and is often used in the manufacture of integrated circuits and electronic components. At present, the commonly used single crystal growth method is the Cecrowski method. Taking the growth of single crystal silicon as an example, its growth process is as follows: see Figures 4 and 5, put polycrystalline silicon into a single crystal growth furnace and heat and melt it. Insert a seed crystal 12 into the polycrystalline silicon, adjust the temperature of the liquid surface of the molten silicon 11 to make it close to the meltin...

Claims

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Application Information

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IPC IPC(8): C30B15/24C30B15/34
Inventor 马明涛
Owner 马明涛
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