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Preparation method of solar battery electrode

A solar cell and electrode technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high contact resistance and series resistance of battery electrodes, low passivation performance at electrodes, and affect battery conversion efficiency. resistance, good cell conversion efficiency, and the effect of reducing the sintering temperature

Inactive Publication Date: 2018-04-20
LONGI SOLAR TECH (TAIZHOU) CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing solar cell electrodes to solve the problems in the prior art that the sintering temperature is too high, which affects the conversion efficiency of the battery, the passivation performance of the electrode is not high due to one-time sintering, and the contact resistance of the battery electrode and series resistance issues such as high

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  • Preparation method of solar battery electrode
  • Preparation method of solar battery electrode

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Embodiment

[0022] A method for preparing a solar cell electrode, patterning and forming an electrode paste layer 3 containing conductive components on a semiconductor 1 substrate that has completed surface texturing, emitter preparation, and passivation; the first heat treatment process; the second heat treatment process; wherein the first heat treatment process and the second heat treatment process can exchange order. The above electrode preparation method has small contact resistance, good passivation performance, and has a wide process window.

[0023] An embodiment of the electrode preparation method of this solar cell below, as figure 1 ,details as follows:

[0024] In the first step, the patterned distribution of the conductive layer is completed by directly coating the conductive paste on the surface of the semi-finished semiconductor solar cell for which the electrode needs to be prepared. In the embodiment, the coating of the conductive paste is selected on both the light-rece...

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Abstract

The invention provides a preparation method of a solar battery electrode. The preparation method comprises the following steps: carrying out imaging to form an electrode slurry layer containing a conductive component; integrally carrying out a first heat treatment process on a semiconductor base including the electrode slurry layer containing the conductive component; and carrying out a second heat treatment process on the area of the electrode slurry layer. According to the preparation method of the solar battery electrode, the sintering temperature can be reduced, the contact resistance andseries resistance of the battery electrode can be reduced, and the sintering process window of a battery can be broadened, so that preferable battery conversion efficiency is achieved.

Description

technical field [0001] The invention relates to a preparation method of a solar cell electrode. Background technique [0002] At present, with the gradual depletion of fossil energy, solar cells are used more and more widely as a new energy alternative. A solar cell is a device that converts the sun's light energy into electricity. Solar cells use the principle of photovoltaics to generate carriers, and then use electrodes to extract the carriers, which is beneficial to the effective use of electrical energy. [0003] In the steps of the currently used solar cells, a high-temperature sintering step is performed after the coating of the patterned conductive paste is formed. In addition, the existing technology for manufacturing solar cells has the following disadvantages: 1. The sintering temperature is too high, thereby affecting the conversion efficiency of the battery; 2. The passivation performance at the electrode is not high in the traditional one-time sintering; The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/18
CPCH01L31/022425H01L31/022433Y02E10/50Y02P70/50
Inventor 李华童洪波靳玉鹏
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD
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