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Glass used for film solar energy battery substrate

A solar cell and glass technology, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve problems such as the decline in performance indicators of solar cell devices, the inability to meet the high temperature process technology of batteries, and the low softening point of high temperature heating, so as to increase the softening point of glass , Ease of molding control, and the effect of improving heat resistance

Inactive Publication Date: 2017-12-05
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the glass substrate of thin-film solar cells is mainly made of soda-lime silicate glass. Its preparation technology is mature and its manufacturing cost is low, but its disadvantage is that the softening point of high temperature heating is not high. With the advancement of the process, it can no longer meet the high temperature process technology of the battery
[0003] The high efficiency of CIGS thin-film solar cells mainly depends on its high-temperature process, which may involve a process of about 750°C, which may cause deformation of the glass for traditional soda-lime silicate glass with a softening point of about 720°C And warping, which in turn affects the quality of the film layer, thereby reducing the performance index of the entire solar cell device and limiting the further improvement of the photoelectric conversion efficiency of thin-film solar cells

Method used

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  • Glass used for film solar energy battery substrate

Examples

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Effect test

Embodiment 1

[0010] The invention provides a kind of glass suitable for thin-film solar cell substrates, including 58% SiO by mass percentage 2 , 9% Al 2 o 3 , 0.01% ZrO 2 , 4.49% K 2 O, 9% Na 2 O, 1% MgO, 5% CaO, 3% BaO, 10% SrO, 0.45% SnO 2 and 0.01% MoO 3 ; The above-mentioned components are melted and molded according to the glass preparation process to obtain the glass.

Embodiment 2

[0012] The invention provides a kind of glass suitable for thin-film solar cell substrates, including 55% SiO by mass percentage 2 , 12% Al 2 o 3 , 0.01% ZrO 2 , 4.49% K 2 O, 9% Na 2 O, 1% MgO, 5% CaO, 3% BaO, 10% SrO, 0.45% SnO 2 and 0.01% MoO 3 ; The above-mentioned components are melted and molded according to the glass preparation process to obtain the glass.

Embodiment 3

[0014] The invention provides a kind of glass suitable for thin-film solar cell substrates, including 56% SiO by mass percentage 2 , 11% Al 2 o 3 , 0.05% ZrO 2 , 4.49% K 2 O, 9% Na 2 O, 1% MgO, 5% CaO, 3% BaO, 10% SrO, 0.40% SnO 2 and 0.1% MoO; the above-mentioned components are melted and molded according to the glass preparation process to obtain the glass.

[0015] The glass that embodiment one to three makes is compared with each performance index by traditional component soda-lime glass, specifically see the following table:

[0016]

[0017] It can be seen from the above table that the coefficient of thermal expansion of the glass in Examples 1 to 3 is 80-85*10 -7 / °C, the weight softening point is above 840°C, which meets the high temperature process energy requirements of thin film solar cells. The thermal expansion coefficient of traditional soda-lime glass meets the requirements, but the softening point of its own weight is around 720°C, so the dimensional ...

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Abstract

The invention discloses a glass used for a film solar energy battery substrate. The glass comprises the following components by mass percentage: 55-58% of SiO2, 9-12% of Al2O3, 0.5-1% of ZrO2, 4-4.5% of K2O, 5-9% of Na2O, 0-1.5% of MgO, 3-5% of CaO, 0-3% of BaO, 6-10% of SrO, 0.1-0.5% of SnO2, and 0.05-0.1% of MoO3; wherein the sum of the mass percentage of SiO2, Al2O3 and ZrO2 is 67-68%, and the glass is obtained through fusion moulding of the above components according to a glass production technology. Compared with common sodium-calcium-silica glass, SrO and BaO are introduced, micro ZrO2 is introduced, by adjusting the ratio of SrO and BaO, the glass softening point is increased, and the thermal expansion coefficient is reduced; according to the ratio in the invention, the heat resistance and the mechanical strength are realized, and the glass can easily melted. In addition, the micro MoO3 is introduced, through cooperation of MoO3 and K2O, the surface tension of liquid glass is reduced, and the glass moulding control is easily realized.

Description

technical field [0001] The invention relates to the technical field of special glass, in particular to a glass suitable for thin-film solar cell substrates. Background technique [0002] At present, the glass substrate of thin-film solar cells is mainly made of soda-lime silicate glass. Its preparation technology is mature and its manufacturing cost is low, but its disadvantage is that the softening point of high temperature heating is not high. With the advancement of the process, it can no longer meet the high temperature process technology of the battery. [0003] The high efficiency of CIGS thin-film solar cells mainly depends on its high-temperature process, which may involve a process of about 750°C, which may cause deformation of the glass for traditional soda-lime silicate glass with a softening point of about 720°C And warping, which in turn affects the quality of the film layer, thereby reducing the performance index of the entire solar cell device and limiting th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/087H01L31/048
CPCC03C3/087H01L31/048Y02E10/50
Inventor 崔介东曹欣石丽芬高强仲召进
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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