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Cleaning method for quartz devices used by diffusion process in manufacturing of photovoltaic cell

A photovoltaic cell and quartz technology, which is applied in the direction of electrical components, semiconductor/solid-state device manufacturing, circuits, etc., can solve problems such as pollution, affecting product quality and conversion efficiency, and achieve the effect of improving conversion efficiency

Inactive Publication Date: 2016-07-06
JIANGXI UNIEX NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These quartz devices will be polluted by metaphosphoric acid, dust, debris, etc. after long-term use, affecting product quality and conversion efficiency

Method used

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  • Cleaning method for quartz devices used by diffusion process in manufacturing of photovoltaic cell

Examples

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Effect test

Embodiment 1

[0020] A cleaning method for quartz devices used in the diffusion process of photovoltaic cell manufacturing. The specific implementation steps are as follows:

[0021] (1) Cleaning the tank: Take out the debris and other sundries in the tank, rinse the tank with pure water for 5 minutes, and drain the flushing water to keep the tank tidy;

[0022] (2) Put the quartz device: slowly put the quartz device into the tank;

[0023] (3) Inject pure water: inject pure water into the tank body, the volume of pure water is 1 / 6 of the tank body volume, to prevent acid splashing when preparing acid solution;

[0024] (4) Prepare the solution: prepare the solution according to the volume ratio of HF:HCl:pure water at 2:1:25, carefully and slowly pour the chemicals into the tank to prevent the liquid from splashing;

[0025] (5) Bubbling: time is 5min;

[0026] (6) Pickling: Acid soaking for 3h;

[0027] (7) Washing: The washing time is 30min;

[0028] (8) Flushing: flush with pure water gun;

[0029] (...

Embodiment 2

[0032] A cleaning method for quartz devices used in the diffusion process of photovoltaic cell manufacturing. The specific implementation steps are as follows:

[0033] (1) Cleaning the tank: Take out the debris and other sundries in the tank, rinse the tank with pure water for 8 minutes, and drain the flushing water to keep the tank tidy;

[0034] (2) Put the quartz device: slowly put the quartz device into the tank;

[0035] (3) Inject pure water and prepare the solution: inject pure water into the tank, the volume of the pure water is 1 / 8 of the tank volume, to prevent the acid from splashing when preparing the acid;

[0036] (4) Prepare the solution: prepare the solution according to the volume ratio of HF:HCl:pure water at 3:2:25, carefully and slowly pour the chemicals into the tank to prevent the liquid from splashing;

[0037] (5) Bubbling: the time is 8min;

[0038] (6) Pickling: acid soaking for 4h;

[0039] (7) Washing: The washing time is 20min;

[0040] (8) Flushing: flush wit...

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Abstract

The invention discloses a cleaning method for quartz devices used by a diffusion process in manufacturing of a photovoltaic cell, and belongs to the field of the photovoltaic technology. The quartz devices, such as a quartz tube, a quartz boat, a tail gas tube and a spraying tube are required by the diffusion process in manufacturing of the photovoltaic cell; the quartz devices are subjected to metaphosphoric acid deposition, and contamination by dust, chippings and the like after long-term use; and consequently, abnormal manufacturing, and decline of the cell conversion efficiency are caused. The cleaning method provided by the method adopts a mixed acid cleaning method and a pure water cleaning method to remove the contamination of the quartz devices so as to ensure the normal production operation and to improve the yield and the conversion efficiency of the cell.

Description

Technical field [0001] The invention relates to a method for cleaning a quartz device used in a diffusion process of photovoltaic cell manufacturing, and belongs to the field of photovoltaic technology. Background technique [0002] With the development of modern industrialization, non-renewable energy sources are declining, and energy issues have increasingly become a bottleneck restricting international social and economic development. Many countries have begun to implement the "Sunshine Plan" to develop solar energy resources and provide new development impetus for economic development. Driven by the huge potential of the international photovoltaic market, solar cell manufacturers in various countries have not only rushed to invest heavily to expand production, but also set up research and development institutions to develop new solar cell projects to improve product quality and conversion efficiency. [0003] At present, the main solar cells on the market are crystalline silico...

Claims

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Application Information

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IPC IPC(8): H01L21/02
CPCH01L21/02096
Inventor 曹江伟张财张广路李晗杨晓琴
Owner JIANGXI UNIEX NEW ENERGY CO LTD
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