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Solar cell and method for manufacturing solar cell

A technology of solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., which can solve problems such as reduced conversion efficiency, ineffective solar cell functions, and increased non-power generation areas

Inactive Publication Date: 2011-01-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the above-mentioned wide area is occupied, there is a problem that the non-power generation area that does not contribute to the function of the solar cell increases and the conversion efficiency decreases.

Method used

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  • Solar cell and method for manufacturing solar cell
  • Solar cell and method for manufacturing solar cell
  • Solar cell and method for manufacturing solar cell

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no. 1 Embodiment approach

[0035] Hereinafter, 1st Embodiment which actualized this invention is demonstrated referring drawings. In addition, in order to make each member in each drawing a size that can be seen on each drawing, the amount of reduction is different for each member and is shown in the drawing.

[0036] (Structure of solar cell)

[0037] First, the structure of the solar cell will be described. In addition, in this embodiment, the configuration of a CIGS type solar cell will be described. figure 1 is a cross-sectional view showing the structure of the solar cell of the present embodiment.

[0038] Such as figure 1 As shown, the solar cell 1 is composed of an assembly of battery cells 40, and the battery cell 40 includes a substrate 10, a base layer 11 formed on the substrate 10, a first electrode layer 12 formed on the base layer 11, and a base layer 12 formed on the first The semiconductor layer 13 on the electrode layer 12 and the second electrode layer 14 formed on the semiconducto...

no. 2 Embodiment approach

[0066] Hereinafter, the second embodiment will be described with reference to the drawings. In addition, in order to make each member in each drawing a size that can be seen on each drawing, the amount of reduction is different for each member and is shown in the drawing.

[0067] (Structure of solar cell)

[0068] First, the structure of the solar cell will be described. In addition, in this embodiment, the configuration of a CIGS type solar cell will be described. Figure 4 is a cross-sectional view showing the structure of the solar cell of the present embodiment.

[0069] Such as Figure 4 As shown, the solar cell 1a is composed of an assembly of battery cells 40, and the battery cell 40 includes a substrate 10, a base layer 11 formed on the substrate 10, a first electrode layer 12 formed on the base layer 11, and a base layer 12 formed on the first electrode layer. The semiconductor layer 13 on the electrode layer 12 , the second electrode layer 14 formed on the semic...

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Abstract

The invention relates to a solar cell and method for manufacturing solar cell. The solar cell includes a plurality of unit cells connected in series and a first partition portion. Each of the unit cells includes a substrate, a first electrode layer formed on the substrate, a semiconductor layer formed on the first electrode layer, and a second electrode layer formed on the semiconductor layer. The first partition portion has insulation properties and partitions the first electrode layers of the unit cells on the substrate with each the first electrode layers being disposed respectively in a region partitioned by the first partition portion.

Description

technical field [0001] The present invention relates to a solar cell and a method of manufacturing the same. Background technique [0002] The solar cell converts light energy into electric energy, and various types of structures have been proposed depending on semiconductors used. In recent years, attention has been paid to CIGS type solar cells whose manufacturing process is simple and whose high conversion efficiency can be expected. A CIGS type solar cell is constituted by connecting a plurality of battery cells in series, and one battery cell is composed of, for example, a first electrode film formed on a substrate, a compound semiconductor (copper-indium-gallium-selenide compound) formed on the first electrode film ) layer thin film and the second electrode film formed on the thin film. The first electrode film is divided for each battery cell by forming a groove in a part of the first electrode film, and is formed so as to straddle between adjacent battery cells. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/0224H01L31/18
CPCH01L31/03926H01L31/0749H01L31/03923H01L31/0322H01L31/20H01L31/022425Y02E10/541Y02P70/50
Inventor 傳田敦斋藤广美
Owner SEIKO EPSON CORP
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