Lead-bismuth-tellurium inorganic reaction system for electroconductive paste composition

A technology of inorganic reaction system and composition, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, conductive coatings, semiconductor devices, etc., and can solve problems such as glass processing parameters and performance difficulties

Inactive Publication Date: 2015-08-26
HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the ability to predict glass processing parameters and behavior under fast firing processes with known frits is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] A set of PBT IRS compositions (G1-G6) were prepared using the raw materials described in Table 1 below. Each composition G1-G6 contained lead, bismuth and tellurium based materials. A set of control compositions (Control 1 to Control 3) were also prepared in which only two of the lead, bismuth and tellurium based materials were used. Samples were prepared in 100 g batches by mixing the individual oxide components in the amounts specified in Table 1 . Load the oxide mixture into the 8.34 in3 volumetric Colorado crucible. The crucible was then placed in an oven at 600°C for 40 minutes to preheat the oxide mixture. After preheating, the crucible was moved into a refractory oven at 850°C for 15 minutes to fuse the components into a glass mixture. The molten glass was then removed from the oven and poured into buckets containing deionized water for a quick quench. The glass material was further processed in a 1 L ceramic jar mill. Fill the jar mill approximately halfway...

Embodiment 2

[0114] A second set of PBT IRS compositions (G13-G20) were prepared according to the parameters described in Example 1 using the raw materials described in Table 3 below. These compositions all contain the PBT system, and also contain other M-oxides. All amounts are based on 100% total weight of the IRS.

[0115] Table 3. Exemplary PBT IRS Compositions (G13-G20)

[0116]

G13

G14

G15

G16

G17

G18

G19

G20

PbO

27.34％

27.02％

26.97％

26.79％

27.07％

27.01％

25.63％

26.87％

TeO 2

46.72％

46.17％

46.10％

45.78％

46.26％

46.16％

46.11％

45.92％

Bi 2 o 3

24.20％

24.47％

25.26％

25.34％

25.05％

25.20％

25.02％

25.06％

M-oxide

1.73％

2.34％

1.67％

2.09％

1.63％

1.62％

3.24％

2.16％

[0117] An exemplary PBT composition was mixed with silver particles and an organic vehicle according to the same parameters and...

Embodiment 3

[0125] Another set of PBT IRS compositions can be prepared according to the parameters described in Example 1 using the raw materials described in Table 5 below. These compositions all contain PBT system and contain Li 2 O and B 2 o 3 . All amounts are based on 100% total weight of the IRS. The expected electrical properties are described in Table 6 below, where improvements are indicated with a "+" sign.

[0126] Table 5. Prophetic PBT IRS Compositions (X1-X5)

[0127]

X1

X2

X3

X4

X5

PbO

28.64％

27.02％

25.47％

26.74％

21.67％

TeO 2

48.95％

46.18％

43.52％

45.70％

37.04％

Bi 2 o 3

20.78％

25.05％

29.15％

25.46％

24.93％

Li 2 o

0.64％

0.75％

0.65％

0.75％

6.35％

B 2 o 3

1.0％

1.0％

1.22％

1.35％

10.0％

[0128] Table 6. Electrical properties of prophetic pastes (X1-X5)

[0129]

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Abstract

An inorganic reaction system comprising a lead-bismuth-tellurium composition of Formula (I): Pb a -Bi b -Te c -M d -O e , wherein 0 < a, b, c and d ‰¤ 1, a + b + c + d = 1, 0 ‰¤ d ‰¤ 0.5, a:b is between about 5:95 and about 95:5, a:c is between about 10:90 and about 90:10, b:c is between about 5:95 and about 95:5, (a+b):c is between about 10:90 and about 90:10, e is a number sufficient to balance the Pb, Bi, Te, and M components, and M is one or more additional elements.

Description

technical field [0001] The present invention relates to lead-bismuth-tellurium inorganic reaction systems (IRS). In one aspect of the present invention, a conductive paste composition for solar panel technology, especially for forming front-side electrical contacts, comprises conductive particles, an organic vehicle and a lead-bismuth-tellurium inorganic reaction system. Background of the invention [0002] A solar cell is a device that converts light energy into electricity using the photovoltaic effect. Solar energy is an attractive green energy source because it is sustainable and produces only non-polluting by-products. Accordingly, a great deal of research is currently being devoted to developing solar cells with enhanced efficiency while continuing to reduce material and production costs. In operation, when light hits a solar cell, a portion of the incident light is reflected by the surface and the remainder is transmitted into the solar cell. Photons of transmitted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01L31/0224C09D7/61
CPCH01L31/18C09D7/1216H01B1/16C09D5/24H01L31/022425C03C3/122C03C3/142C03C8/10C03C8/18C03C10/0054Y02E10/50C09D7/61H01B1/22H01L31/0264
Inventor L·王C·郭L·闫W·张
Owner HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN
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