Honeycomb-shaped wet-method black-silicon texturing structure and preparing method thereof and black-silicon cell and preparing method thereof

A honeycomb and black silicon technology, which is applied in the manufacture of circuits, electrical components, and final products, can solve the problems of high procurement cost of new equipment, idle polycrystalline texturing equipment, and large space occupied by equipment, and achieve large-scale market promotion Good value, good appearance and performance, and the effect of saving space

Active Publication Date: 2018-02-27
江西瑞安新能源有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional black silicon battery is prepared by using the traditional wet black silicon tank equipment, which can complete the wet black silicon digging and hole expansion process, but the tank body is complicated, the equipment takes up a lot of space, and the purchase cost of new equipment is high. The introduction of this equipment will cause problems such as idleness of the original online polycrystalline texturing equipment, which seriously affects the improvement of enterprise benefits

Method used

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  • Honeycomb-shaped wet-method black-silicon texturing structure and preparing method thereof and black-silicon cell and preparing method thereof
  • Honeycomb-shaped wet-method black-silicon texturing structure and preparing method thereof and black-silicon cell and preparing method thereof
  • Honeycomb-shaped wet-method black-silicon texturing structure and preparing method thereof and black-silicon cell and preparing method thereof

Examples

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preparation example Construction

[0030] A method for preparing a honeycomb wet-process black silicon textured structure, comprising:

[0031] Digging diamond wire polysilicon wafers through wet-process black silicon trough-type hole-digging equipment;

[0032] The product after the completion of the hole digging operation is reamed through the RENA chain equipment, and NH is added to the alkali washing liquid in the alkali washing tank of the RENA chain equipment 3 .H 2 O and H 2 o 2 , add H to the pickling solution in the pickling tank 2 o 2 .

[0033] Utilize the existing polycrystalline battery production line, add front-end digging equipment, and combine polycrystalline RENA texturing equipment to realize the new technology of wet-process black silicon preparation with slot machine digging and chain RENA machine hole expansion. Not only can the idle texturing equipment be reused efficiently, but also greatly save the space occupied by the equipment, and at the same time, an ideal honeycomb wet-proce...

Embodiment 1

[0057] This embodiment provides a black silicon battery, which is prepared by the following method:

[0058] First, the diamond wire polysilicon wafers are dug through the wet-process black silicon trough-type hole-digging equipment. The hole digging operation is to carry out rough throwing, first water washing, first pickling, second water washing, first silver plating, second silver plating, and hole digging in the wet black silicon tank type hole digging equipment. , the third water washing, the first desilvering, the second desilvering, rinsing and the second pickling.

[0059] Among them, the temperature of rough polishing is 60°C, and the time of rough polishing is 180S; the first washing, the second washing and the third washing are all carried out at room temperature, and the washing time is 120S; the first pickling It is pickled by nitric acid at room temperature for 60S; the first silver plating and the second silver plating are carried out at room temperature in th...

Embodiment 2

[0064] This embodiment provides a black silicon battery, which is prepared by the following method:

[0065] First, the diamond wire polysilicon wafers are dug through the wet-process black silicon trough-type hole-digging equipment. The hole digging operation is to carry out rough throwing, first water washing, first pickling, second water washing, first silver plating, second silver plating, and hole digging in the wet black silicon tank type hole digging equipment. , the third water washing, the first desilvering, the second desilvering, rinsing and the second pickling.

[0066] Among them, the temperature of rough polishing is 75°C, and the time of rough polishing is 200S; the first water washing, the second water washing and the third water washing are all carried out at room temperature, and the washing time is 180S; the first pickling It is pickled by nitric acid at room temperature for 75S; the first silver plating and the second silver plating are carried out at room...

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Abstract

The invention provides a honeycomb-shaped wet-method black-silicon texturing structure and a preparing method thereof and a black-silicon cell and a preparing method thereof, and relates to the technical field of black-silicon cell preparing. The preparing method of the honeycomb-shaped wet-method black-silicon texturing structure includes the steps that a diamond-wire polycrystalline silicon slice is subjected to hole digging operation through a wet-method black-silicon-tank hole digging device; products after hole digging operation is completed are subjected to hole expanding operation through a RENA chain-type device, NH3.H2O and H2O2 are added into alkaline wash liquid in an alkaline wash tank of the RENA chain-type device, and H2O2 is added into acid wash liquid of an acid wash tank.The ideal honeycomb-shaped wet-method black-silicon texturing structure with the excellent quality can be prepared, existing polycrystal production devices are fully used, and the device procurement / improvement costs are effectively reduced. The black-silicon cell prepared with the method is good in appearance performance and excellent in electric performance and has the large market popularization value.

Description

technical field [0001] The invention relates to the technical field of black silicon battery preparation, and in particular to a honeycomb wet-process black silicon textured structure and a preparation method thereof, as well as a black silicon battery and a preparation method thereof. Background technique [0002] The traditional black silicon battery is prepared by using the traditional wet black silicon tank equipment, which can complete the wet black silicon digging and hole expansion process, but the tank body is complicated, the equipment takes up a lot of space, and the purchase cost of new equipment is high. The introduction of this equipment will cause problems such as the idleness of the original online polycrystalline texturing equipment, which seriously affects the improvement of enterprise benefits. Contents of the invention [0003] The first object of the present invention is to provide a method for preparing a honeycomb wet-process black silicon texture str...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCH01L31/02363Y02P70/50
Inventor 李璐陈淳孙杰高杨罗小钢
Owner 江西瑞安新能源有限公司
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