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Glass composition and electrode composition for solar cell using same

A technology of glass composition and electrode composition, which is applied to conductive materials dispersed in non-conductive inorganic materials, circuits, photovoltaic power generation, etc., can solve the problems of reduced fluidity of glass melt and reduced wettability of substrates, etc. , to achieve the effect of high fill factor, increased sintering temperature and time margin, and low contact resistance

Inactive Publication Date: 2016-09-14
DONGJIN SEMICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is due to the glass former B 2 o 3 Can cause reduced fluidity of the glass melt and reduced wettability of the substrate

Method used

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  • Glass composition and electrode composition for solar cell using same
  • Glass composition and electrode composition for solar cell using same
  • Glass composition and electrode composition for solar cell using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6 and comparative example 1 to 5

[0067] Glass compositions of Examples and Comparative Examples were prepared according to compositions and contents according to Table 1 and Table 2 below.

[0068] [Table 1]

[0069] Element

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

PbO(wt%)

46.9

37.43

44.97

59.26

47.71

65.96

TeO 2 (weight%)

49.0

58.83

54.29

36.5

50.4

30.85

Li 2 O (weight%)

4.1

3.74

0.74

4.24

1.89

3.19

total

100

100

100

100

100

100

Na 2 O (parts by weight)

-

2.67

-

3.7

1.78

1.59

K 2 O (parts by weight)

-

2.14

-

2.11

2.11

2.66

Bi 2 o 3 (parts by weight)

-

-

5.82

-

7.58

1.1

SiO 2 (parts by weight)

-

2.14

-

-

1.1

[0070] [Table 2]

[0071] Element

Embodiment 7 to 9 and comparative example 6 to 7

[0073] According to the composition and content according to the following Table 3 (unit: weight %), a conductive paste including conductive particles, glass frit, and a solvent in which a binder was dissolved was prepared.

[0074] In detail, each of the glass compositions was mixed with a vehicle (a binder and a solvent for dissolving the binder) using a PLM mixer, and then conductive particles (Ag) were added thereto, followed by secondary PLM mix. The respective pastes obtained by mixing were kneaded using a three-roll mill, and finally pastes for solar cell electrodes were prepared.

[0075] [table 3]

[0076]

experiment example 1

[0078] With respect to the glass compositions of Examples 1 to 3 and Comparative Examples 1 and 2, glass transition temperatures (Tg) and exothermic peaks were measured by differential scanning calorimetry (DSC). The results are given in Table 4. In addition, in Figure 1 to Figure 4 The differential scanning calorimetry results of Examples 1 to 3 and Comparative Example 1 are given in .

[0079] [Table 4]

[0080]

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Abstract

The present invention relates to a glass composition and an electrode composition for a solar cell using the same. More particularly, according to the present invention, provided are a glass composition which has a low glass transition temperature and exhibits at least three heating peaks, and an electrode composition for a solar cell, which exhibits low series resistance and high fill factor of the solar cell by using the glass composition, thereby improving the efficiency of energy conversion.

Description

technical field [0001] The present invention relates to a glass composition for improving contact resistance between an electrode and a substrate and suppressing shunting of a pn junction, and an electrode composition for a solar cell using the glass composition. Background technique [0002] Solar cell electrodes contain conductive metal powder, glass powder, organic binder, solvent, etc. as main components. Among them, the glass frit plays a very important role in inducing the contact resistance between the electrode material and the cell of the pn junction structure. [0003] In order to obtain excellent conversion efficiency of crystalline solar cells, the activity of glass frit at high sintering temperature (700°C to 900°C) must be improved. The glass frit with excellent activity increases the Ag deposition on the surface of the n-layer to improve the contact resistance, leading to the improvement of series resistance and fill factor. It is thus possible to manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/10H01B1/22H01L31/0224
CPCC03C8/10H01B1/22C03C3/07C03C3/122H01L31/022425Y02E10/50C03C8/18H01B1/20H01L31/042C03C4/14C03C2204/00C03C2205/00H01L31/022433
Inventor 黄建镐卢和泳金幼成张恩洙李相德
Owner DONGJIN SEMICHEM CO LTD
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