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A kind of conductive paste and solar cell prepared therefrom and manufacturing method

A solar cell and conductivity technology, which is applied in the field of conductive paste and solar cells prepared therefrom and manufacturing, can solve the problems of affecting the performance of solar cells, poor EL detection performance, poor tensile performance, etc., and achieves ohmic contact Excellent, high stability, excellent bonding strength

Active Publication Date: 2022-03-18
CHANGZHOU JUHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Through this new detection project, solar cell researchers began to understand that in solar cells using lead-free tellurium-based glass electrode pastes, black spots or cloudy black spots often occur, affecting the performance of solar cells
Examples of EL detection photos are figure 1 as shown, figure 1 The test results of four solar cells are included, among which (1)-(3) all show that the EL detection performance is not good, (4) is a case where the EL detection performance is normal, but (4) has poor tensile performance and adhesive strength Low

Method used

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  • A kind of conductive paste and solar cell prepared therefrom and manufacturing method
  • A kind of conductive paste and solar cell prepared therefrom and manufacturing method
  • A kind of conductive paste and solar cell prepared therefrom and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0093] [Sample production]

[0094] Mandatory glass : Prepared TEO 2 , BI 2 O 3 WO 3 Zno, Al 2 O 3 , LIO 2 , B 2 O 3 Wait, as shown in Table 1-1, Table 1-2, Table 1-3 The ratio shown in Table 1-3, the proportion of these glass raw materials, and finally made small sample glass A-1 to A-5.

[0095] Table 1-1

[0096]

[0097] Table 1-2

[0098]

[0099] Table 1-3

[0100] A-5 TEO2 B2O3 weight% 93 7 Mol% 85.3 14.7

[0101] in,

[0102] The A-4 is a substantially free lead in which the present invention is defined, and the antimony-based glass is a must-containing glass, The rest is comparative example, specifically,

[0103] A-1 is the antithetic glass (formulation in Patent Document 7);

[0104] A-2 is a glass of poor zinc as a main component and adding an aluminum element.

[0105] A-3 is a glass of ruthenium to zinc as a main component and add aluminum elements.

[0106] A-5 is a glass glass glass (formulation in Patent Document 8)

[0107] ...

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Abstract

The invention discloses a conductive paste for forming surface electrodes of solar cells, which contains conductive powder, mixed glass, and an organic phase; wherein, the mixed glass includes the following two types of glass components: the first type of glass It is at least one kind selected from the tellurium-based glasses that are substantially free of lead and contain tellurium-bismuth-lithium as an essential component; the second type of glass is selected from lead-silicate glasses that contain lead and silicon as essential components and substantially do not contain tellurium. At least one type of glass. The present invention also provides a solar cell prepared by printing the above-mentioned conductive paste as a surface electrode and a manufacturing method of the solar cell. The EL performance of the solar cell prepared by the conductive paste of the present invention is well detected, the cell has excellent ohmic contact, the cell has high efficiency, high stability, and strong adhesion, and the adhesion is taken into account while improving stability and ohmic contact performance.

Description

Technical field [0001] The present invention relates generally to a slurry composition of a solar cell electrode having a high stable solar cell electrode for use to fabricate EL detection, and a solar cell using the slurry and a manufacturing method thereof. Background technique [0002] The conventional solar cell is a conductive type semiconductor layer in which electrically conductive conductive type is provided, and the anti-reflection film and the light-receiving surface electrode are provided on the semiconductor layer, and the back surface electrode structure is provided on the back surface (below When do not distinguish between the front, the back, it will be collectively referred to as "electrode"), and the electric energy generated by the PN junction of the semiconductor after the light is exported by electrode. It is assumed that the semiconductor substrate described above is a p-type polycrystalline silicon substrate, and the semiconductor layer on the light receivin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01L31/0224H01L31/18C03C3/12C03C3/07
CPCH01B1/16H01B1/22H01L31/022425H01L31/18C03C3/122C03C3/07Y02E10/50Y02P70/50
Inventor 冈本珍范刘海东任益超熊长军熊志凯蒋安松万莉牟亭亭
Owner CHANGZHOU JUHE NEW MATERIAL CO LTD
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