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Electronic paste and application thereof in solar cell

An electronic paste and glass powder technology, applied in the field of solar cell materials, can solve the problems of low conversion efficiency, poor reliability and low conductivity of solar cells, and achieve the effects of excellent ohmic contact, prevention of excessive sintering, and high conductivity

Pending Publication Date: 2022-03-01
DK ELECTRONICS MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among them, the electronic paste used for solar cells often has many technical defects such as poor reliability, low conductivity, and low conversion efficiency of solar cells. Therefore, it is urgent to develop a special electronic paste suitable for solar cells that can be industrialized. material

Method used

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  • Electronic paste and application thereof in solar cell

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Effect test

preparation example Construction

[0064] According to the technical solution provided by the second aspect of the present invention, the preparation method of the electronic paste of the first aspect comprises the following steps:

[0065] P1: At room temperature, put silver-coated copper powder and glass powder into the container first, and mix well to obtain a premix;

[0066] P2: At room temperature, sequentially add an organic carrier and an inhibitor to the premix, and stir until uniform;

[0067] P3: Grinding to obtain a uniformly ground slurry crude product;

[0068] P4: Carrying out vacuum centrifugation and defoaming of the homogeneously ground slurry crude product to finally obtain the electronic slurry.

[0069] The technical solution provided according to the third aspect of the present invention is the application of the electronic paste described in the first aspect in solar cells. Specifically, the electrode containing the electronic paste described in the first aspect can be used in the solar...

Embodiment 1

[0072] Prepare glass powder α according to the following steps:

[0073] S1: Weigh 42wt% SiO according to mass percentage 2 , 25wt% Bi 2 o 3 , 13wt%TeO 2 , 9wt% BaCO 3 , 8.5wt% MgO, 1.4wt% TiO 2 and 1.1 wt% Al 2 o 3 , placed in a crucible, and mixed evenly;

[0074] S2: Heating in a muffle furnace to melt into molten glass; the heating temperature is 790°C, and the heating duration is 40 minutes;

[0075] S3: Pour the glass liquid into deionized water for quenching to make coarse glass powder;

[0076] S4: Pulverizing the prepared coarse glass powder by a ball mill to produce the glass powder α with an average particle size of 300-400 nm.

Embodiment 2

[0078] Prepare glass frit β according to the following steps:

[0079] S1: Weigh 45wt% SiO according to mass percentage 2 , 22wt% Bi 2 o 3 , 14wt%TeO 2 , 7wt% BaCO 3 , 6.8wt% MgO, 3wt% TiO2 and 2.2 wt% Al 2 o 3 , placed in a crucible, and mixed evenly;

[0080] S2: Heating in a muffle furnace to melt into molten glass; the heating temperature is 790°C, and the heating duration is 40 minutes;

[0081] S3: Pour the glass liquid into deionized water for quenching to make coarse glass powder;

[0082] S4: Pulverizing the prepared coarse glass powder by a ball mill to produce the glass powder β with an average particle size of 300-400 nm.

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Abstract

The invention belongs to the technical field of solar cell materials, and particularly relates to electronic paste which comprises the following components in parts by mass: 80-96 parts of silver-coated copper powder, 11-18 parts of glass powder, 15-28 parts of an organic carrier and 1-3 parts of an inhibitor, the inhibitor is a mixture of rhodium caprylate and copper caprate. When the electronic paste is used as solar cell conductive paste, excellent ohmic contact performance can be generated, high conductivity and excellent photoelectric conversion efficiency are shown, and the wide market prospect is achieved.

Description

technical field [0001] The invention belongs to the technical field of solar cell materials, in particular to an electronic paste and its application in solar cell sheets. Background technique [0002] my country has the largest number of electronic component manufacturers in the world, but there are very few companies with international competitiveness. my country can produce almost all types of electronic component products, but there are few domestic electronic component brands in the high-end market. Based on the new characteristics of market demand, electronic components are developing in the direction of ultra-micro, chip, digital, intelligent, and green. The development prospects of my country's electronic components industry are optimistic. Under the national policy support and key development, my country's electronic components industry is generally upward, and high-end products rely on imports and are in a period of rapid development. [0003] Electronic paste is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16
CPCH01B1/22H01B1/16H01B13/00H01L31/0224C03C12/00C03C1/00
Inventor 张洪旺龙守星
Owner DK ELECTRONICS MATERIALS INC
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