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Paste for light receiving surface electrode of solar cell, manufacturing method and solar cell unit

A light-receiving surface electrode and solar cell technology, applied in the direction of electrical components, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of reducing contact resistance, weak substrate erosion, etc., and achieve low contact resistance, high bonding strength, and high output effect

Inactive Publication Date: 2016-01-27
NORITAKE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in these conductive pastes containing lead-free tellurium glass, the attack on the substrate is too weak, so it is still difficult to sufficiently reduce the contact resistance

Method used

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  • Paste for light receiving surface electrode of solar cell, manufacturing method and solar cell unit
  • Paste for light receiving surface electrode of solar cell, manufacturing method and solar cell unit
  • Paste for light receiving surface electrode of solar cell, manufacturing method and solar cell unit

Examples

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Embodiment Construction

[0067] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Furthermore, in the following embodiments, the drawings are appropriately simplified or deformed, and the dimensional ratios, shapes, and the like of each part are not necessarily drawn correctly.

[0068] figure 1 It is a figure which schematically shows the cross-sectional structure of the solar cell module 12 provided with the silicon-based solar cell 10 to which the electroconductive composition of one Example of this invention was applied. exist figure 1 Among them, the solar cell module 12 includes the solar cell 10 described above, a sealing material 14 for sealing it, a surface glass 16 provided on the sealing material 14 on the light-receiving surface side, and a surface glass 16 provided to protect the solar cell 10 and the sealing material 14 from the back side. The protective film (ie back plate) 18. The sealing material 14 is, for example, a se...

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PUM

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Abstract

The invention provides a paste for a light receiving surface electrode of a solar cell, wherein the paste can form an electrode that has high binding strength with a substrate and low contact resistance and furthermore high output can be obtained on condition that an LDE substrate is used, and a manufacturing method of the paste, and a solar cell unit with high output. The conductive paste for forming the light receiving surface electrode comprises leadless tellurite glass with various compositions. Various lead-containing additives and an additive with high-melting-point metal are mixed in the paste. Preferably the lead is carried in appropriate methods of false firing, chemical method, mechanical method, etc. Therefore if the electrode of the light receiving surface is formed through a fire-through manner, an erosion surface which appropriately has recesses and projections can be obtained. Therefore a requirement for a high electric characteristic and high binding strength can be satisfied. Furthermore, because the light receiving surface electrode (28) contains high-melting-point metals and lead, recombination is suppressed. Therefore high output can be obtained even the LDE substrate is equipped.

Description

technical field [0001] The present invention relates to a paste for a solar cell light-receiving surface electrode that can be suitably used for a solar cell electrode formed by a firethrough method, a method for producing the same, and a solar cell. Background technique [0002] For example, a general silicon-based solar cell has a structure in which a p-type polycrystalline semiconductor is interposed between n + The layer has an anti-reflection film and a light-receiving surface electrode, and the lower surface is separated by a p + The layer includes a back electrode (hereinafter, simply referred to as an "electrode" when not distinguishing between them), and electricity generated at the pn junction of the semiconductor by receiving light is obtained through the electrode. The above-mentioned anti-reflection film is a film for ensuring sufficient visible light transmittance, reducing surface reflectance and improving light receiving efficiency, and is composed of a thin...

Claims

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Application Information

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IPC IPC(8): H01L31/0224H01B1/22H01L31/18H01L31/04
CPCH01B1/22H01L31/022425H01L31/04Y02E10/50Y02P70/50
Inventor 杉山高启角田航介林博道吉野泰
Owner NORITAKE CO LTD
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