Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for improving diffusion uniformity of solar cell

A solar cell, uniformity technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high dispersion of intra-chip diffusion resistance, uneven resistance between diffusion cells, and large dispersion of square resistance between wafers. , to achieve the effect of improving the diffusion uniformity of solar cells, improving the diffusion uniformity and high controllability

Inactive Publication Date: 2016-05-04
HEFEI HAREON SOLAR TECH
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot make the gas atmosphere in the furnace tube evenly distributed, which will cause uneven square resistance between the diffusion cells and large dispersion of square resistance between the pieces.
[0004] For another spraying process method, that is, spraying process gas to the cells in the constant temperature area, this method can improve the uniformity of the diffusion sheet, but due to the influence of the gas flow rate on the inner surface of the sheet, it will cause the diffusion resistance in the sheet discrete high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for improving diffusion uniformity of solar cell
  • Device and method for improving diffusion uniformity of solar cell
  • Device and method for improving diffusion uniformity of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for improving the diffusion uniformity of a solar cell, the specific steps of the manufacturing method are as follows:

[0027] (a): Place the air intake pipe 6 with the same length as 3 below the quartz boat 3, the opening 9 provided on the air intake pipe 6 faces the bottom of the diffusion quartz tube 1, and the open end 61 of the air intake pipe 6 is connected to the air pump , the closed end 62 of the air inlet pipe 6 is placed in the diffusion quartz tube 1, the side wall of the closed end 62 has a hole and the hole faces the furnace door 2;

[0028] (b): Fix an exhaust pipe 7 with both ends open above the quartz boat 3 in the diffusion quartz tube 1, place one end of the exhaust pipe 7 in the diffusion quartz tube 1, and place the other end of the exhaust pipe 7 Placed outside the diffusion quartz tube 1;

[0029] (d): Turn on the air pump and exhaust device, the opening 9 on the inlet pipe 6 starts to output gas to the bottom of the diffusion quartz tu...

Embodiment 2

[0033] A method for improving the diffusion uniformity of a solar cell, the specific steps of the manufacturing method are as follows:

[0034] (a): Place 5 intake pipes 6 with different lengths under the quartz boat 3, the opening 9 provided on the intake pipe 6 faces the bottom of the diffusion quartz tube 1, and the open end 61 of the intake pipe 6 is in contact with the air pump Connected, the closed end 62 of the intake pipe 6 is placed in the diffusion quartz tube 1, the side wall of the closed end 62 has a hole and the hole faces the furnace door 2;

[0035] (b): Fix an exhaust pipe 7 with both ends open above the quartz boat 3 in the diffusion quartz tube 1, place one end of the exhaust pipe 7 in the diffusion quartz tube 1, and place the other end of the exhaust pipe 7 Placed outside the diffusion quartz tube 1;

[0036] (d): Turn on the air pump and exhaust device, the opening 9 on the inlet pipe 6 starts to output gas to the bottom of the diffusion quartz tube 1, a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a device and method for improving the diffusion uniformity of a solar cell. The device comprises an air intake pipe, an exhaust pipe, a flow monitoring meter and an open hole; the air intake pipe is located below a quartz boat; two ends of the air intake pipe are an open end and a closed end; the open end of the air intake pipe is provided with the flow monitoring meter; the open hole in the air intake pipe faces the bottom of a diffusion quartz tube; the closed end of the air intake pipe is arranged in the diffusion quartz tube; the exhaust pipe is located above silicon wafers; the uniformity of a gas in the quartz tube can be improved; and diffusion uniformity between the cell sheets and in the cell sheets can be improved. With the device and method of the invention adopted, the controllability of subsequent process parameters can be improved, the stability of the performance and parameters of the solar cell can be ensured.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a device and a method for improving the diffusion uniformity of solar cells. Background technique [0002] A solar cell, also known as a photovoltaic cell, is a semiconductor device that converts solar light energy directly into electrical energy. Because it is a green environmental protection product, it will not cause environmental pollution, and it is a renewable resource. Therefore, in today's energy shortage situation, solar cells are a new type of energy with broad development prospects. [0003] Diffusion to make P-N junction is the core of crystalline silicon solar cells, and it also has an important impact on the quality of the cells. For the diffusion process, it is very important to ensure the uniformity of diffusion. The battery with good diffusion uniformity has high controllability of subsequent process parameters, which can better ensure the stability of battery perf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01L21/223H01L31/18
CPCH01L21/223H01L31/1804Y02E10/547Y02P70/50
Inventor 郝杰杰刘仁中张斌
Owner HEFEI HAREON SOLAR TECH