Production method of film solar cell and electro-deposition device thereof

A technology for solar cells and production methods, applied in electrodes, circuits, electrical components, etc., can solve the problems of complex production process and high production cost of solar thin-film cells, and achieve the effects of saving processes, reducing waste and avoiding occupation.

Active Publication Date: 2015-12-30
BEIJING HI TECH WEALTH INVESTMENT DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] For this reason, the technical problem to be solved by the present invention is that the production process of the solar thin film battery in the prior art is complicated

Method used

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  • Production method of film solar cell and electro-deposition device thereof
  • Production method of film solar cell and electro-deposition device thereof
  • Production method of film solar cell and electro-deposition device thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0088] Example 1

[0089] This embodiment provides a method for producing thin-film solar cells, including the following steps:

[0090] (a) such as Figure 1b As shown, a transparent conductive layer 12 is formed on the glass substrate 11.

[0091] (b) such as Figure 1a with 1b As shown, a window layer 13 is formed on the transparent conductive layer 12, and the window layer 13 is a cadmium sulfide (CdS) layer.

[0092] (c) such as Figure 1c with 1d As shown, the long contact electrode 2 penetrates the window layer 13 to make ohmic contact with the transparent conductive layer 12, the contact surface of the long contact electrode 2 and the transparent conductive layer 12 is a long strip, and the long The cross section of the contact electrode 2 perpendicular to the long side of the contact is rectangular, and the long side of the long contact electrode 2 is a straight line.

[0093] (d) such as Figure 1e As shown, on the transparent conductive layer 12 in step (c), the first trench ...

Example Embodiment

[0105] Example 2

[0106] This embodiment provides a method for producing a thin-film solar cell. The specific method is the same as that in Embodiment 1. The only difference is that the cross section of the elongated contact electrode 2 perpendicular to the long side of the elongated contact electrode 2 is circular. Specific as Figure 2d-2j Shown.

[0107] Such as Figure 8a with Figure 8b As shown, in the electrodeposition tank, when the absorption layer 14 is electrodeposited on the window layer 13 and the first trench P1 is filled at the same time, the elongated contact electrodes 2 are connected and energized at the ends.

[0108] As an alternative embodiment, in the method for producing the thin-film solar cell of this embodiment, the cross section of the elongated contact electrode perpendicular to the long side direction of the elongated contact electrode is trapezoidal.

Example Embodiment

[0109] Example 3

[0110] The specific implementation of the method for producing the thin-film solar cell described in this embodiment is the same as that of Example 1, except that:

[0111] In step (c), the elongated contact electrode 2 penetrates the window layer 13 to make ohmic contact with the transparent conductive layer 12, and the contact surface between the elongated contact electrode 2 and the transparent conductive layer 12 is elongated, Such as Figure 3c As shown, the long side of the long contact electrode 2 is a curve; Figure 3d As shown, the cross section of the long contact electrode 2 perpendicular to the long side direction of the contact is trapezoidal, and the long contact electrode 2 is connected and energized at the end.

[0112] In step (h), after filling the vacancies of the elongated contact electrodes of the semi-finished product obtained in step (g), a back electrode layer is formed. In this embodiment, the back electrode layer and filling the vacancies ...

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Abstract

The invention provides a production method of a film solar cell. A first groove is filled with a substance identical with an absorption layer, and the substance of the absorption layer is a semiconductor; the vacancy of a long-strip-shaped contact electrode is directly filled with a substance identical with a back electrode, and the direct contact resistance between the back electrode and the absorption layer is very large, so that no influenced are caused to serial connection of solar cell units; and that is to say, the film solar cell does not need to be filled by an electrical-isolation substance, the electrical-isolation substance does not participate in photoelectric conversion, and the area of a dead area is reduced, so that the occupation of the solar cell by the electrical-isolation substance is avoided, and the photoelectric conversion area of the solar cell is increased. In addition, when the used contact electrode is the long-strip-shaped contact electrode, the long-strip-shaped contact electrode is removed after electro-deposition, then a long-strip-shaped contact electrode vacancy is obtained, and the original groove etching process is omitted, so that the wastes of production materials are reduced, the processes are saved, and the production cost is further lowered.

Description

technical field [0001] The invention relates to a thin-film solar cell, in particular to a production method of the thin-film solar cell and an electrodeposition device thereof. Background technique [0002] Solar cells, also known as "solar chips" or photovoltaic cells, are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. Among them, thin-film solar cells based on the photoelectric effect are the main ones. [0003] Generally, thin-film solar cells are placed facing the sunlight upwards, and mainly include lower encapsulation layer, base layer, back electrode layer, back contact layer, absorber layer, window layer, upper contact layer and upper encapsulation layer from bottom to top. Chinese patent CN101807622A discloses a method for preparing a cadmium telluride thin-film solar cell module, which includes the following steps: [0004] First, deposit CdS film on transparent conductive film glass to...

Claims

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Application Information

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IPC IPC(8): H01L31/18C25D17/12
CPCY02P70/50
Inventor 张征宇李伟中
Owner BEIJING HI TECH WEALTH INVESTMENT DEV
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