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Solar cell module provided with an edge space

A technology of solar cells and components, applied in electrical components, circuits, photovoltaic power generation, etc., can solve problems such as the decline in conversion efficiency of solar cell circuits

Active Publication Date: 2014-09-17
太阳能先锋株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this shunt, there will be problems such as a decrease in the conversion efficiency of the solar cell circuit.

Method used

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  • Solar cell module provided with an edge space
  • Solar cell module provided with an edge space
  • Solar cell module provided with an edge space

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Experimental program
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Embodiment approach

[0044] First, by irradiating weak-energy laser light from the glass substrate side of the above-mentioned solar cell circuit, layers other than the first electrode (hereinafter also referred to as "first layer") (408), that is, the CIS layer (406) and the buffer layer are removed. (405) and the second electrode (404) (hereinafter also referred to as "second layer" or "second layer group"). The part removed by laser irradiation is the part that is more than 10 mm from the end of each layer including the glass substrate (409), and the removed width is preferably 0.1 to 1 mm or more (refer to Figure 6B ). The above-mentioned laser irradiation is preferably performed with a pulsed laser, as long as it is a layer with a thickness of about 2 to 3 μm. As the pulse frequency, the energy equivalent to 9 W at about 6 kHz can remove the layer other than the first electrode, that is, the second layer. (404, 405, 406). In another preferred embodiment, laser light may be irradiated from ...

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Abstract

The present invention provides a solar cell module having a preferable side distance to prevent degradation of solar cell characteristics without complicating the processing steps. A solar cell module comprising at least: a substrate glass; a first layer formed above the substrate glass; a second layer formed above the first layer, wherein the second layer is removed by using a first removal mechanism having a first energy. One layer is removed, and a first margin where the first layer is not formed is set between the end of the first layer and the end of the glass substrate, and the second layer is removed by using a second removal mechanism with a second energy. A second margin where no second layer is formed is provided between the end of the second layer and the end of the glass substrate. It is characterized in that the width of the second margin is greater than the width of the first margin.

Description

technical field [0001] The present invention relates to the technology of the solar cell assembly with margin, especially relates to CIS (CuInSe 2 The system is a general term including CIS, CIGS, CIGSS, etc.) thin-film solar cell modules. Background technique [0002] For a long time, CIS thin film solar cell modules are laminated with metal back electrode layer, p-type light absorbing layer, high resistance buffer layer, n-type window layer (transparent conductive film) and other layers on the surface of substrate (109) to form CIS thin film Solar cell module, put EVA (Ethylene-Vinyl Acetate) resin, PVB (PolyVinyl Butyral) and other filling material (103) with sealing effect on it, laminate and install the cover glass (102) on the upper surface, use aluminum etc. The frame (101) surrounds it to cover the end of the solar cell module. By interposing resin or the like (not shown) between the frame and the solar cell module, moisture such as water is prevented from entering...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/046H01L31/0224H01L31/0392H01L31/042H01L31/0749H01L31/18
CPCH01L31/0749H01L27/1423Y02E10/541H01L31/022425Y02E10/543H01L31/18H01L31/042H01L31/046H01L31/0392H01L31/0463Y02E10/50
Inventor 西博史铃木博久
Owner 太阳能先锋株式会社