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Solar cell and method of fabricating the same

A solar cell and back electrode layer technology, applied in the field of solar cells, can solve the problems of increasing the power dead zone and reducing the efficiency of solar cells, etc., and achieve the effect of reducing the dead zone and improving the overall efficiency

Inactive Publication Date: 2015-03-18
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, as the interval between the first via hole and the second via hole increases, a dead zone in which electricity is generated increases, thereby reducing the efficiency of the solar cell.

Method used

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  • Solar cell and method of fabricating the same
  • Solar cell and method of fabricating the same
  • Solar cell and method of fabricating the same

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Embodiment Construction

[0027] In the following description of the embodiments, it will be understood that when a layer, region, pattern or structure is referred to as being "on" or "under" another substrate, layer, region, pad or pattern , it can be "directly" or "indirectly" on another substrate, layer, region, pad or pattern, or one or more intervening layers may also be present. Such a position of each layer will be described with reference to the drawings.

[0028] The thickness and size of each layer, region, pattern or structure shown in the drawings may be modified for convenience or clarity. In addition, the size of each layer, region, pattern or structure does not entirely reflect an actual size.

[0029] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[0030] In the following, reference will be made to Figure 1 to Figure 10 The solar cell according to the embodiment is described in detail. figure 1 is a plan view showing a solar cell ...

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Abstract

Disclosed are a solar cell and a method of fabricating the same. The method includes forming a back electrode layer on a substrate, forming a first through hole through the back electrode layer, forming a light absorbing layer on the back electrode layer, forming a buffer layer on the light absorbing layer, and forming a second through hole through the buffer layer and the light absorbing layer. A distance between the first through hole and the second through hole is about 40 ㎛ or more.

Description

technical field [0001] The present embodiment relates to a solar cell and a method of manufacturing the solar cell. Background technique [0002] A method of manufacturing a solar cell for photovoltaic power generation is as follows. First, after the substrate is prepared, a back electrode layer is formed on the substrate and patterned by means of a laser to form a plurality of back electrodes. [0003] Thereafter, a light absorbing layer, a buffer layer, and a high-impedance buffer layer are sequentially formed on the back electrode. Cu(In,Ga)Se is formed by simultaneously or separately evaporating copper (Cu), indium (In), gallium (Ga) and (Se) 2 A scheme of (CIGS) based light absorbing layer and a scheme of performing a selenization process after a metal precursor film has been formed have been widely used in order to form the light absorbing layer. The energy band gap of the light absorbing layer is in the range of about 1 eV to 1.8 eV. [0004] Then, a buffer layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/042H01L31/18
CPCH01L31/0749H01L31/0465Y02E10/541H01L31/0508H01L31/042H01L31/18H01L31/02245H01L31/022475
Inventor 权珍浩
Owner LG INNOTEK CO LTD