Front-face gate electrode of solar cell

A technology of solar cells and solar cells, which is applied in the field of solar cells, can solve problems such as the waste of the light-receiving area of ​​auxiliary grid lines, and achieve the effects of increasing photoelectric conversion efficiency, increasing costs, and simple and easy manufacturing processes

Inactive Publication Date: 2011-08-17
江苏伯乐达光伏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a front grid electrode of a solar cell to solve the problem in the prior art that the carriers collected at the damaged part of the auxiliary grid line cannot reach the main grid line smoothly, resulting in a waste of light-receiving area

Method used

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  • Front-face gate electrode of solar cell
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  • Front-face gate electrode of solar cell

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Experimental program
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Embodiment 1

[0023] figure 1 It is a schematic diagram of the distribution structure of the front grid electrode of the solar cell provided by Embodiment 1 of the present invention. refer to figure 1 The front grid electrode of the solar cell is distributed on the surface of the solar battery sheet 10, the front grid electrode includes a main grid line 11 and an auxiliary grid line 12 connected to the main grid line 11, and the auxiliary grid line 12 is in a mesh shape distributed.

[0024] Specifically, the sub-grid line 12 is composed of two sets of intersecting parallel lines, the angle formed between the sub-grid line 12 and the main grid line 11 is greater than 0° and less than 90°, and the sub-grid line 12 and the The angle included by the busbar lines 11 is larger than 90° and smaller than 180°. The line width of the sub-gate lines 12 ranges from 1 μm to 250 μm, and the vertical distance between two adjacent parallel sub-gate lines is from 1 μm to 20000 μm.

[0025] The front gr...

Embodiment 2

[0030] figure 2 It is a schematic diagram of the distribution structure of the front grid electrodes of the solar cell provided by Embodiment 2 of the present invention. refer to figure 2 , different from Embodiment 1, the busbars 21 included on the surface of the solar cell 20 are three parallel lines, the line width of the three busbars 21 is 1.6mm, and the distance between the busbars 21 is 52mm . For the convenience of expression, the three busbars 21 are respectively referred to as the first busbar 21a, the second busbar 21b and the third busbar 21c, and the sub-barriers on the left side of the first busbar 21a are called The sub-gate line between the first group of sub-gate lines 22a, the first main gate line 21a and the second main gate line 21b is called the second group of sub-gate lines 22b, the second main gate line 21b and the third main gate line 21c. The sub-gate lines in between are called the third group of sub-gate lines 22c, and the sub-gate lines on the r...

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Abstract

The invention provides a front-face gate electrode of a solar cell. The front-face gate electrode is distributed on the surface of a solar cell plate and comprises a main gate line and a minor gate line, wherein the minor gate line is connected with the main gate line and is distributed in shape of a net. In the front-face gate electrode of the solar cell, disclosed by the invention, the minor gate line is distributed on the surface of the solar cell plate in shape of the net, thus photo-induced carriers of each region of the surface of the solar cell plate are provided with multiple paths to reach the main gate line; and when a certain part of the minor gate line is broken or incompletely printed, the photo-induced carriers can finish the collection and the conveyance through the minor gate line which is close to the certain part of the surface of the solar cell and communicated with the main gate line, and the efficiency reduction of the solar cell is avoided.

Description

technical field [0001] The invention relates to a solar cell, in particular to a front grid electrode of the solar cell. Background technique [0002] With the increasing tension of global energy sources, solar energy has been widely valued by countries all over the world due to its unique advantages such as no pollution and large market space. Photovoltaic power generation has the advantages of safety, reliability, no noise, and low failure rate. Solar cells are the main devices in photovoltaic power generation technology that directly convert solar energy into electrical energy. [0003] A common crystalline silicon solar cell is composed of a back electrode, a P-type layer composed of semiconductor materials, an N-type layer, a P-N junction, an anti-reflection film, and a front gate electrode. When sunlight hits the surface of the solar cell, the anti-reflection film and textured structure can effectively reduce the light reflection loss on the surface of the cell. Afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224
Inventor 林涛陈清波冯帅臣孙坚高利军宋金德
Owner 江苏伯乐达光伏有限公司
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