Glass composition, method for producing glass composition, conductive paste, and solar cell

A technology of glass composition and solar cell, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, photovoltaic power generation, etc., can solve the problems of increased manufacturing process and increased cost, and achieve excellent reliability and productivity, and burn-through high effect

Pending Publication Date: 2020-12-04
ASAHI GLASS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a method of partially removing the insulating layer, a method of physically removing it using a laser or the like can be mentioned, but this method involves an increase in the number of manufacturing steps and an increase in device introduction costs.

Method used

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  • Glass composition, method for producing glass composition, conductive paste, and solar cell
  • Glass composition, method for producing glass composition, conductive paste, and solar cell
  • Glass composition, method for producing glass composition, conductive paste, and solar cell

Examples

Experimental program
Comparison scheme
Effect test

example 1～13、 example 21～24

[0161] As the first glass composition used in the manufacture of the glass compositions of Examples and Comparative Examples, the glass composition used in Comparative Examples, and the second glass composition, the compositions and characteristics shown in Tables 1 to 3 were produced. glass powder. That is, mix and mix raw material powders so as to have the compositions shown in Tables 1 to 3, melt in an electric furnace at 1000°C to 1300°C using a platinum crucible for 30 minutes to 1 hour, and shape it into a thin plate glass, and then use a ball mill to 50 The sheet-shaped glass was dry-pulverized so as to be in a predetermined range (0.5 μm to 10 μm), and coarse particles were removed with a 150-mesh sieve.

[0162] For the glass compositions (glass powders) of Examples 1 to 13, glass powders obtained in the following manner were used: In order to further reduce D within the range specified above 50 , after the above-mentioned dry pulverization, air classification is car...

example 31～46、 example 51～53

[0177] Using the first glass powder (G1-G9) obtained above, the glass powder (G10-G13) used in the comparative example, the second glass powder (G21-G23) and the glass powder (G24) used in the comparative example were produced. Glass compositions (glass powders) of Examples 31 to 46 and Examples 51 to 53 having the compositions shown in Tables 4 to 6. For the glass powders of Examples 31 to 46, by using the first glass powder shown in Table 4 and Table 5 or the glass powder used in the comparative example and the second glass powder or the glass powder used in the comparative example at a mass ratio of 1:1 Made by mixing. The glass powders of Examples 51-53 were manufactured by mixing the 1st glass G7 and the 2nd glass G21 in the ratio shown in Table 6. In each example, mixing was performed for 1 hour using a V-type mixer.

[0178] (evaluate)

[0179] Using the glass powders of Examples 31 to 46 and Examples 51 to 53, an electrically conductive paste for forming an Al elect...

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Abstract

The invention relates to a glass composition, a method for producing the glass composition, a conductive paste, and a solar cell. The purpose of the present invention is to provide a glass compositionwhich is capable of obtaining an electroconductive paste that has high burnthrough properties and does not deteriorate a semiconductor substrate by mixing an electroconductive metal powder and an organic vehicle and slurrying the mixture. The glass composition contains, expressed in mol% on an oxide basis, 3% or more and 19% or less of Bi2O3, 20% or more and 70% or less of B2O3, 1% or more and 30% or less of SiO2, 3% or more and 20% or less of K2O, 3% or more and 20% or less of CaO, and 1% or more and 20% or less of BaO. Moreover, the glass composition is substantially free of PbO and CuO.

Description

technical field [0001] The present invention relates to a glass composition, a method for producing the glass composition, a conductive paste, and a solar cell. Background technique [0002] Conventionally, electronic devices in which conductive layers serving as electrodes are formed on semiconductor substrates such as silicon (Si) have been used in various applications. The conductive layer to be the electrode is usually formed by applying a conductive paste obtained by dispersing conductive metal powder such as aluminum (Al), silver (Ag), copper (Cu) and glass powder in an organic vehicle. On the semiconductor substrate, and bake at a temperature above the melting point of the conductive metal powder. [0003] When forming an electrode on a semiconductor substrate, an insulating film may be formed on the semiconductor substrate, and a patterned electrode may be formed so as to partially penetrate the insulating film and be in contact with the semiconductor substrate. Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03C3/064C03C3/14H01B1/16
CPCC03C12/00C03C3/064C03C3/14H01B1/16Y02E10/547
Inventor 中北要佑柏田阳平马尔万·德姆林铃木绍太黑木崇志
Owner ASAHI GLASS CO LTD
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