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Tellurium-containing glass material and preparation method and application thereof

A glass material and paste technology, applied in electrical components, circuits, semiconductor devices, etc., can solve problems such as pollution and toxicity, and achieve the effect of strong chemical stability, high thermal stability, excellent performance and characteristics

Inactive Publication Date: 2013-01-30
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Claims
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Problems solved by technology

However, with the improvement of people's awareness of environmental protection in recent years, glass materials containing lead oxide have limited their further application due to their toxicity and pollution problems.

Method used

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  • Tellurium-containing glass material and preparation method and application thereof
  • Tellurium-containing glass material and preparation method and application thereof
  • Tellurium-containing glass material and preparation method and application thereof

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preparation example Construction

[0050] In addition, this embodiment also provides a method for preparing a tellurium-containing glass material, such as figure 1 shown, including the following steps:

[0051] Step S110, weighing each raw material according to the following mole percentages, and mixing to obtain a mixture,

[0052] TeO 2 0~70%;

[0053] ZnO 2~25%;

[0054] Nb 2 o 5 0~30%;

[0055] Bi 2 o 3 0~25%;

[0056] BaO 0~20%;

[0057] WO 3 0~30%;

[0058] MoO 3 0~20%; and

[0059] SiO 2 0~25%.

[0060] Step S 120, heat and melt the mixture at 700-1000° C. to obtain molten glass.

[0061] Step S130, quenching the molten glass to obtain granular glass.

[0062] Among them, the quenching treatment is water quenching.

[0063] In step S140, the granular glass is ball-milled and sieved, and the collected glass powder is the glass material.

[0064] Wherein, the mesh size of the molecular sieve used in the sieving process is greater than 100...

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Abstract

The invention relates to a tellurium-containing glass material and a preparation method and an application thereof. The tellurium-containing glass material comprises, by molar percentage, 30% to 70% of TeO2, 2% to 25% of ZnO, 0% to 30% of Nb2O5, 0% to 25% of Bi2O3, 0% to 20% of BaO, 0% to 30% of WO3, 0% to 20% of MoO3 and 0% to 25% of SiO2. According to the tellurium-containing glass material, tellurite glass of a low melting temperature replaces traditional tellurium-containing glass, the stability of the glass material is enhanced by introducing a plurality of network outside bodies and network intermediates to form three-dimensional network frameworks simultaneously, and the obtained glass material is free of lead, low in melting and good in stability.

Description

technical field [0001] The invention relates to the field of silicon crystal solar cells, in particular to a tellurium-containing glass material and its preparation method and application. Background technique [0002] A general-purpose silicon solar cell is composed of a P-type silicon semiconductor substrate, an N-type diffusion layer, an anti-reflection film, a back electrode and a front electrode. The front electrode is generally formed by printing the paste on the anti-reflection film by screen printing and then rapidly sintering at 500~900°C. The front electrode paste used in industrial production is mainly rolled from components such as silver, glass materials and organic carriers. During the sintering process, the function of the glass material in the front electrode paste is to melt and remove the anti-reflection film to obtain a point contact between the front electrode and the N-type diffusion layer. This process is usually called fire-through. [0003] The glas...

Claims

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Application Information

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IPC IPC(8): C03C3/12C03C3/062H01L31/0224
Inventor 曹秀华陈积世魏艳彪熊康仝晓玲
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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