Method For Producing a Solar Cell, in Particular a Silicon Thin-Film Solar Cell

a solar cell and silicon thin film technology, applied in photovoltaic energy generation, renewable energy products, coatings, etc., can solve the problems of low efficiency of solar cells, achieve the effects of increasing light absorption, quick exposure to electron radiation, and increasing thickness

Inactive Publication Date: 2018-03-22
LILAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method enhances light absorption and solar cell efficiency by scattering light to travel through the silicon layer for a longer path, enabling thicker silicon layers to be securely deposited at lower temperatures, thus preventing damage and simplifying the manufacturing process.

Problems solved by technology

Often, these solar cells have a too low efficiency, because only a small fraction of the light is absorbed in the at least one silicon layer.
This is partly due to the fact that thick silicon layers are not used or cannot be used in some of the conventional solar cells.

Method used

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  • Method For Producing a Solar Cell, in Particular a Silicon Thin-Film Solar Cell
  • Method For Producing a Solar Cell, in Particular a Silicon Thin-Film Solar Cell

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Embodiment Construction

[0015]In the figures, identical or functionally identical parts or layers are provided with the same reference numerals.

[0016]In a first embodiment of the method according to the invention, a glass substrate 1 is heated to a temperature between 200° C. and 700° C., preferably to a temperature between 300° C. and 500° C., for example, to a temperature of 400° C. and the surface which is arranged at the top of FIG. 1 is exposed to electron radiation. In particular, an electron beam having a line-shaped cross-section is moved across the surface of the glass substrate 1 perpendicular to the direction of the line.

[0017]The irradiation with the electron beam accompanied by heating partially causes lighter constituents in the glass in a layer 2 of the glass substrate to diffuse out of the surface. These constituents may be, for example, Na2O, K2O, MgO or CaO. This outdiffusion of constituents of the glass produces light-scattering structures in the layer 2.

[0018]In a further method step, a...

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Abstract

A method for producing a solar cell, in particular a silicon thin-film solar cell, wherein a TCO layer (3) is applied to a glass substrate (1) and at least one silicon layer (4, 5) is applied to the TCO layer (3). Before the TCO layer (3) is applied, electron radiation is applied to the glass substrate (1), such that a light-scattering layer (2) of the glass substrate (1) is produced, to which light-scattering layer the TCO layer (3) is applied. Alternatively or additionally, a first silicon layer (4) may be applied to the TCO layer (3), a laser radiation or electron radiation may be applied to the first silicon layer (4), and a second silicon layer (5) may be applied to the irradiated first silicon layer (4).

Description

[0001]This application is a continuation application of U.S. patent application Ser. No. 15 / 345,923, filed on Nov. 8, 2016, which is a continuation application of U.S. patent application Ser. No. 14 / 902,779, filed on Jan. 4, 2016, which is an application filed under 35 USC § 371 of PCT / EP2014 / 065833, filed on Jul. 23, 2014 claiming priority to DE 10 2013 107 910.5, filed on Jul. 24, 2013, each of which is herein incorporated by reference in their entirety.BACKGROUND OF THE INVENTION[0002]The present invention relates to a method for manufacturing a solar cell, in particular a silicon thin-film solar cell.[0003]Silicon thin film solar cells have many applications. Often, these solar cells have a too low efficiency, because only a small fraction of the light is absorbed in the at least one silicon layer. This is partly due to the fact that thick silicon layers are not used or cannot be used in some of the conventional solar cells.[0004]The problem underlying the present invention is t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01L31/0236H01L31/18H01L31/068H01L31/048C03C23/00C03C17/34
CPCY02E10/547H01L31/1872H01L31/068Y02E10/546C03C2218/31C03C2217/94H01L31/048H01L31/182H01L31/02366C03C23/004Y02P70/521H01L31/1884H01L31/1804C03C17/3482Y02P70/50H01L31/18
InventorLISSOTSCHENKO, VITALIJ
OwnerLILAS