Solar cell and method for manufacturing same

A solar cell and manufacturing method technology, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of long PECVD process time, difficulty in meeting PECVD process conditions, and low productivity, so as to improve photoelectric conversion efficiency, shorten process time, The effect of saving the manufacturing unit price

Inactive Publication Date: 2011-07-06
TG SOLAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the PECVD process time is too long and it is difficult to meet the PECVD process conditions, so there is a problem of low productivity

Method used

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  • Solar cell and method for manufacturing same
  • Solar cell and method for manufacturing same
  • Solar cell and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0053] In order to achieve the above-mentioned object, the solar cell of the present invention includes: a substrate; a lower electrode formed on the substrate; a photovoltaic element part including a polycrystalline photovoltaic element formed on the lower electrode and laminated with a plurality of polycrystalline semiconductor layers, And an amorphous photovoltaic element formed on the polycrystalline photovoltaic element and laminated with a plurality of amorphous semiconductor layers; and an upper electrode formed on the photovoltaic element portion.

[0054] In addition, in order to achieve the above object, the method for manufacturing a solar cell according to the present invention includes: a step of forming a lower electrode on a substrate; and a step of forming a photoelectric element portion on the lower electrode, the photoelectric element portion including and A polycrystalline photovoltaic element laminated with a plurality of polycrystalline semiconductor layers, a...

Embodiment 1

[0089] The structure of the unit area a of the tandem solar cell according to Example 1 of the present invention is the same as the structure of the unit area a of the tandem solar cell described above. Therefore, in Embodiment 1 below, detailed descriptions of the structural elements included in the unit area a are omitted in order to avoid overlapping descriptions.

[0090] Figure 6 to Figure 11 It is a figure which shows the series connection type solar cell and its manufacturing method concerning Example 1 of this invention.

[0091] First, refer to Image 6 , A substrate 100 is provided, the substrate 100 includes a plurality of wiring areas b, and the plurality of wiring areas b are located between the plurality of cell areas a and the cell areas a.

[0092] At this time, an anti-reflection layer (not shown) may be additionally formed on the substrate 100 to prevent the incident sunlight from being directly reflected to the outside without being absorbed, resulting in a decrea...

Embodiment 2

[0108] The structure of the series connection type solar cell according to Example 2 of the present invention is the same as the series connection type solar cell of Example 1 except for the wiring area b. Therefore, in the following Embodiment 2, the description overlapping with Embodiment 1 is omitted.

[0109] Figure 12 to Figure 17 It is a figure which shows the series connection type solar cell and its manufacturing method concerning Example 2 of this invention.

[0110] First, refer to Picture 12 , A substrate 100 is provided, the substrate 100 includes a plurality of wiring areas b, and the plurality of wiring areas b are located between the plurality of cell areas a and the cell areas a.

[0111] Next, a lower conductive layer 110 made of a conductive material is formed on the substrate 100.

[0112] Next, refer to Figure 13 , The lower conductive layer 110 is patterned to form the lower electrode layer 111 (111a, 111b) of a predetermined pattern. That is, the lower electr...

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PUM

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Abstract

The present invention relates to a solar cell and to a method for manufacturing same. The solar cell according to the present invention includes a substrate (100); a lower electrode (111a) formed on the substrate (100); a photoelectric element unit (200a) including a polycrystalline photoelectric element (210) formed on the lower electrode (111a) and which has a plurality of laminated polycrystalline semiconductor layers (211a, 212a, 213a), and an amorphous photoelectric element (220) formed on the polycrystalline photoelectric element (210), and which has a plurality of laminated amorphous semiconductor layers (221, 222, 223); and an upper electrode (400) formed on the photoelectric element unit (200a).

Description

Technical field [0001] The present invention relates to a solar cell and a manufacturing method thereof, and more particularly to a photovoltaic element including a polycrystalline semiconductor layer and a tandem solar cell laminated with an amorphous semiconductor layer and a manufacturing method thereof. In addition, the present invention relates to a solar cell in which a plurality of tandem solar cell units (unit cells) with low manufacturing cost are connected in series while improving photoelectric conversion efficiency and reliability, and a manufacturing method thereof. Background technique [0002] Generally, the photoelectric conversion efficiency of conventional thin-film solar cells is generally less than 10%, and therefore, there are various difficulties in actual commercialization. [0003] In order to overcome the above-mentioned problems, a tandem solar cell in which a plurality of single junction type photovoltaic elements are stacked, or a series connection type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042
CPCH01L27/1423Y02E10/50H01L31/077H01L31/0392H01L31/046Y02E10/547
Inventor 李裕进张仁九金东济张锡弼李永浩李炳一张泽龙
Owner TG SOLAR CORP
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