CN102464448B - Glass plate used for film solar battery and its preparation method - Google Patents
Glass plate used for film solar battery and its preparation method Download PDFInfo
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- CN102464448B CN102464448B CN 201010542766 CN201010542766A CN102464448B CN 102464448 B CN102464448 B CN 102464448B CN 201010542766 CN201010542766 CN 201010542766 CN 201010542766 A CN201010542766 A CN 201010542766A CN 102464448 B CN102464448 B CN 102464448B
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Abstract
The invention provides a glass plate used for a film solar battery and its preparation method. The glass plate used for the film solar battery comprises the following components by weight percentage: 50-59% of SiO2, 15-18% of Al2O3, 1-4% of B2O3, 0-8% of Na2O, 3-10% of K2O, 0-2% of MgO, 0-9% of CaO, and 6-10% of BaO and 3-7% of SrO, wherein the total amount of Na2O and K2O is 5-12%, and the total amount of MgO, CaO, SrO and BaO is 12-20%. The glass plate has characteristic of good thermal expansion coefficient, the thermal expansion coefficient is 75-85*10<-7>/K in the temperature scope of 50-350 DEG C. When the glass plate is used for preparing a CIGS solar film at the temperature higher than 620 DEG C, the glass plate can be matched and tightly combined with the CIGS solar film under the high temperature.
Description
[technical field]
The present invention relates to sheet glass and preparation method thereof, particularly relate to a kind of sheet glass for thin-film solar cells and manufacture method thereof.
[background technology]
Solar energy power generating is as a kind of clean reproducible energy, and its importance is paid attention to by countries in the world gradually, and various solar battery technologies also continue to bring out out.In numerous solar battery technologies, hull cell is with its low cost, high stability for CIGS (CuInGaSe, copper indium gallium zinc), and the big shares of advantage on solar cell market such as transformation efficiency room for promotion increase fast.The ever-increasing market share and the technological improvement that continues, feasible increasing to the market requirement of CIGS cell substrate glass substrate, stricter to the performance requriements of glass.Originally the last soda-lime-silica glass that uses of CIGS is low in response to the height temperature, and glass is out of shape in the course of processing easily, and is difficult to satisfy the improved requirement of battery manufacturing process gradually.
In the technology of preparation CIGS battery, a kind of three-steps process is arranged, the battery sheet efficiency of conversion of preparation is higher.Its technical process is: the first step, In, the Ga of coevaporation 90% and Se element form (In in the time of underlayer temperature 250-300 ℃
0.7Ga
0.3)
2Se
3Initialization layer; Second step is evaporation Cu, Se when underlayer temperature is 550-580 ℃, finishes for second step during rich Cu a little up to film; The 3rd step kept the underlayer temperature in second step, a spot of In of coevaporation, Ga, Se on the film of rich a little Cu, and finally obtain CuIn near stoichiometric ratio
0.7Ga
0.3Se
2Film.Preparation technology requires can not deform 500-580 ℃ of maintenance as the sheet glass of battery sheet substrate.
Discover that the theoretical efficiency of CIGS is 30%, and can only reach 20% efficient now, reason is indium and gallium atom distribution and inhomogeneous in the CIGS material, and it is distinct that a stage indium and gallium are arranged a little less than normal room temperature the time.If the temperature of material heating is more high, material more is tending towards homogeneity.Because lack this homostyructure, the photoelectric characteristic of rich gallium material is poorer, causes rich gallium CIGS battery efficiency lower.Research has also been pointed out to make clear and definite, the best method of CIGS solar cell, if produce under comparatively high temps, material is just much even; If will obtain desired homogeneity, material then needs to cool down rapidly.This shows that the glass as the CIGS solar cell substrate need have higher strain point temperature and the heat-resistant stability of Geng Gao.
Common soda-lime-silica glass is generally also as base plate glass, but the strain point temperature of soda-lime-silica glass has only about 510 ℃, and heat-resistant stability also has only about 125K, is difficult to adapt to the requirement after technology improves.The borosilicate glass of selection is also arranged as base plate glass, though it has light weight, compact structure, heat-resistant stability advantages of higher, the borosilicate glass flat panel complex manufacturing is difficult to satisfy scale operation, the more important thing is that the thermal expansivity of borosilicate glass flat panel is usually 40 * 10
-7Below/the K, differ too big with the CIGS film, in preparation process, generate stress easily, influence follow-up processing.
[summary of the invention]
Based on this, be necessary the sheet glass and the manufacture method thereof that are used for thin-film solar cells that provide a kind of thermal expansivity and CIGS film to be complementary.
A kind of sheet glass for thin-film solar cells by weight percentage, comprises: 50～59% SiO
2, 15～18% Al
2O
3, 1～4% B
2O
3, 0～8% Na
2O, 3～10% K
2O, 0～2% MgO, 0～9% CaO, 6～10% BaO, 3～7% SrO, wherein, described Na
2O and K
2The total amount of O is 5～12%, the total amount of described MgO, CaO, SrO and BaO is 12～20%.
In a preferred embodiment, described sheet glass for thin-film solar cells by weight percentage, comprises: 54～58.5% SiO
2, 15～15.6% Al
2O
3, 1.4～1.7% B
2O
3, 2～8% Na
2O, 3.4～10% K
2O, 1.4～2% MgO, 0～2% CaO, 6.5～10% BaO, 3.2～5.3% SrO, wherein, Na
2O and K
2The total amount of O is 11.4～12%, the total amount of MgO, CaO, SrO and BaO is 13.1～17.3%.
In a preferred embodiment, comprise that also total amount is no more than 2% SO
3, P
2O
5, Sb
2O
3, F and Cl.
In a preferred embodiment, the strain point temperature of described sheet glass for thin-film solar cells is higher than 620 ℃.
In a preferred embodiment, described sheet glass for thin-film solar cells is 75～85 * 10 at 50～350 ℃ of temperature range thermal expansivity
-7/ K.
In a preferred embodiment, the heat-resistant stability of described sheet glass for thin-film solar cells is greater than 145K.
In a preferred embodiment, described sheet glass for thin-film solar cells is 10 in viscosity
2The glass solution temperature of dpa.s correspondence is below 1580 ℃, and viscosity is 10
4The temperature of glass liquid of dpa.s correspondence is below 1175 ℃.
A kind of preparation method of the sheet glass for thin-film solar cells comprises: be formulated as follows frit according to weight percent: 50～59% SiO
2, 15～18% Al
2O
3, 1～4% B
2O
3, 0～8% Na
2O, 3～10% K
2O, 0～2% MgO, 0～9% CaO, 6～10% BaO, 3～7% SrO, wherein, Na
2O and K
2The total amount of O is 5～12%, the total amount of MgO, CaO, SrO and BaO is 12～20%; And with after the described frit fusion, form sheet glass by the float glass process moulding.
Above-mentioned sheet glass has thermal expansivity preferably, and 50～350 ℃ of temperature ranges, thermal expansivity is 75～85 * 10
-7/ K.This sheet glass is when being higher than 620 ℃ of temperature and being used for the CIGS solar energy film and preparing, and it can be good at coupling with CIGS solar energy film under the high temperature and in conjunction with tight.
[embodiment]
Below in conjunction with embodiment sheet glass and the manufacture method thereof that is used for thin-film solar cells is described in further detail.
The sheet glass that is used for thin-film solar cells of one embodiment by weight percentage, comprises: 50～59% SiO
2, 15～18% Al
2O
3, 1～4% B
2O
3, 0～8% Na
2O, 3～10% K
2O, 0～2% MgO, 0～9% CaO, 6～10% BaO, 3～7% SrO, wherein, described Na
2O and K
2The total amount of O is 5～12%, the total amount of described MgO, CaO, SrO and BaO is 12～20%.
SiO
2Be the composition that forms the skeleton of glass, if content is lower than 50%, will reduce the chemical-resistant stability of glass, particularly acid resistance, also be difficult for obtaining high strain-point, low density glass.If SiO
2Content is higher than 59%, and the high temperature viscosity of glass increases, and glass is difficult to fusing, and the clarification of glass metal also can be compared difficulty.More preferred scheme is that content is 54～58.5%.
Al
2O
3Belong to intermediate oxide, can significantly improve the strain point temperature of glass, heat-resistant stability and the chemical stability of increase glass.For guaranteeing to reach high strain point temperature and heat-resistant stability, Al
2O
3Use content be not less than 15%.But too high Al
2O
3Can increase the high temperature viscosity of glass again, glass melting temperature is raise, can use floating process production, Al for guaranteeing glass
2O
3Content be not higher than 18%.More preferred scheme is that content is 15～15.6%.
B
2O
3Be one of important component of glass, can improve many performances of glass, and good fluxibility is arranged.B
2O
3Can improve the mechanical property of glass heat-resistant stability, chemical stability, reduction density, thermal expansivity and raising glass.In the present embodiment in order to guarantee that sheet glass has high strain-point temperature and high heat-resistant stability, has used the B of high level
2O
3, B
2O
3Adding can play the effect that improves fusing, improves performance.But B
2O
3Also have the characteristic that reduces high temperature viscosity and improve low temperature viscosity, therefore selectable content range is less, should be between 1～4%.More preferred scheme is that content is 1.4～1.7%.
Na
2O and K
2O works to promote fusing, adjusts thermal expansivity in composition, if too high levels, thermal expansivity can be excessive, and can reduce strain point and the anti-stability of glass, and more rational content is Na in the present embodiment
2O, 0～8%; K
2O, 3～10%, and Na
2O+K
2O is higher than 5%, but is no more than 12%.More preferred scheme is Na
2O, 2～8%; K
2O, 3.4～10%, and Na
2O+K
2O is higher than 11.4%, but is no more than 12%.
CaO has the effect that improves strain point temperature, reduces the glass high temperature viscosity and improve thermal expansivity, and CaO content height is conducive to low density, the acid resistance of glass in addition, but can cause devitrification to take place, and the control of CaO content is below 9% in the present embodiment.More preferred scheme is that control is below 2%.
MgO can be used for replacing the CaO of a part in glass, improve the processability of glass.MgO content height is unfavorable to improving strain point temperature in the present embodiment, so content control is below 2%.More preferred scheme is that control is 1.4～2%.
SrO, the BaO effect of SrO in the present embodiment are similar, to improving strain point of glass temperature and anti-devitrification good effect are arranged, and beneficial to the heat-resistant stability of glass, can improve chemical stability and the weathering resistance of glass simultaneously.Reasonable content range is SrO, 3～7%; BaO, 6～10%.More preferred scheme is SrO, 3.2～5.3%; BaO, 6.5～10%.
The total amount of MgO, CaO, SrO and BaO should be controlled between 12～20%, and low excessively alkaline earth metal content is difficult to play the effect that reduces glass metal high temperature viscosity and anti-devitrification, and too high content can cause glass density and thermal expansivity too high again.More preferred scheme is that control is 13.1～17.3.
Except mentioned component, above-mentioned sheet glass can also contain total amount and be no more than 2% SO
3, P
2O
5, Sb
2O
3, F, Cl etc., with fusing and the clarification that improves glass.
Above-mentioned sheet glass is fit to use the floating process moulding.Traditional floating process adopts glass melt viscosity to reach 10
2The glass smelting temperature of correspondence during dpa.s melts frit, clarifies under this temperature, through overcooling, homogenizing, enter molten tin bath again, and certain thickness sheet glass is made in moulding in molten tin bath.The glass composition that present embodiment relates to is 10
2The temperature control of dpa.s viscosity correspondence is below 1580 ℃, and this temperature is higher with respect to common soda-lime-silica glass, and this is owing to contain the Al of high level in the glass
2O
3The B that adds in the composition
2O
3Help to reduce the high temperature viscosity of glass melt with composition such as alkaline earth metal oxide, glass melt viscosity reduces makes glass melt can improve the clarification ability, guarantees the quality of glass finished product.
Glass melt viscosity reaches 10
4Correspondence is the mold temperature of glass melt during dpa.s, and the mold temperature of the sheet glass of present embodiment can be controlled below 1175 ℃.Glass melt mold temperature height heats tin liquor by the transmission of tin liquor in molten tin bath heat, if the tin liquor temperature rises too high, can make tin accelerate evaporation, accelerates the loss of tin liquor on the one hand, and Zheng Fa tin liquor regelation forms defective at sheet glass on the other hand.Too high for preventing that tin liquor from heating up, can be by adding refrigerating unit at the molten tin bath high-temperature area, as the water bag etc., reduce the tin liquor temperature.
For improving the moulding of glass melt, the temperature when reducing moulding also can adopt in the cooling homogenizing stage of glass increase cooling power, as adding cooling end space Shui Bao, strengthening cooling end dilution air quantity etc.Can control glass melt moulding in molten tin bath in the scope from 1175 ℃ to 50 ℃ of reductions, make the sheet glass of desired thickness.Obtain the sheet glass of present embodiment again through subsequent annealing, cooling, cutting.
The present embodiment sheet glass has thermal expansivity preferably, and 50～350 ℃ of temperature ranges, thermal expansivity is 75～85 * 10
-7/ K.This sheet glass is being higher than 620 ℃ of temperature for Cu (In
1-xGa
x) Se
2During film preparation, the Cu (In under itself and the high temperature
1-xGa
x) Se
2Film can be good at coupling and combination is tight.
The sheet glass of present embodiment also has strain point temperature and is higher than 620 ℃ and heat-resistant stability Δ T greater than the characteristic of 145K, like this can be so that the processing temperature of CIGS thin-film solar cells further improves, and guarantee that in quick cooling thereafter sheet glass does not break, and helps CIGS thin-film solar cells efficiency of conversion further to promote.
Embodiment
Make more specific description by the following examples, but therefore scope of the present invention is not subjected to the restriction of any way.
Sheet glass in following examples prepares in the laboratory as follows:
The raw material of each component is mixed by composition proportion, heated 4 hours under 1600 ℃ of temperature with platinum crucible, in melting process, with the platinum agitator glass metal is stirred, make sheet glass discharge bubble and homogenizing.The glass metal of molten state is watered in cast iron or graphite jig, form the glass preformed board, be higher than annealing formation sheet glass under the annealing point temperature then.
The component of the sheet glass of every kind of component and glass properties index are listed in table 1, table 2.Every performance index are measured by following standard and method:
Strain point temperature is the temperature that glass deformation begins, and refers to such temperature, under this temperature with coming rejected heat to handle the stress that produces in 16 hours.Measure corresponding to 10 according to ASTM C598-88 among the present invention
14.7The strain point of the glass viscosity of dpa.s.
Glass heat stability is measured with the thermal stability determination stove according to SJ/T 11037-1996.
Thermal expansivity is that show sample is to the value of the relative expansion rate of raw footage, according to DIN51045, with the thermal expansivity of thermal dilatometer working sample in 50～350 ℃ of temperature ranges.
Glass density compares the density instrument by sink-float and measures.
Glass melt viscosity 10
2Dpa.s and 10
4The temperature of dpa.s correspondence is measured according to DIN52312.The results are shown in Table 1, table 2, wherein 1～5 and 8～12nd, embodiment, 6,7 is comparative example.
Table 1
| Composition (wt%) | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| SiO 2 | 56.4 | 58.5 | 54 | 51 | 59 | 62 |
| Al 2O 3 | 15.3 | 15.6 | 15 | 18 | 17.5 | 19 |
| B 2O 3 | 3 | 1.4 | 1.7 | 1 | 1 | 0 |
| Na 2O | 6.5 | 8 | 2 | 4.5 | 4.4 | 3 |
| K 2O | 3 | 3.4 | 10 | 6.5 | 6 | 1 |
| MgO | 0 | 1.4 | 2 | 1.2 | 0 | 7 |
| CaO | 4.8 | 2 | 0 | 2 | 1.3 | 2 |
| SrO | 3.2 | 3.2 | 5.3 | 6.8 | 4.8 | 1 |
| BaO | 7.8 | 6.5 | 10 | 9 | 6 | 5 |
| Na 2O+K 2O | 9.5 | 11.4 | 12 | 11 | 10.4 | 4 |
| MgO+CaO+SrO+BaO | 15.8 | 13.1 | 17.3 | 19 | 12.1 | 15 |
| Strain point temperature (℃) | 633 | 636 | 634 | 631 | 642 | 650 |
| Heat-resistant stability Δ T (K) | 162 | 151 | 149 | 155 | 157 | 200 |
| Thermal expansivity (* 10 -7/K) | 75 | 79.6 | 80.1 | 77.5 | 76.4 | 50 |
| 10 2The dpa.s temperature (℃) | 1559 | 1577 | 1531 | 1548 | 1579 | 1700 |
| 10 4The dpa.s temperature (℃) | 1154 | 1133 | 1162 | 1149 | 1174 | 1280 |
Table 2
| Composition (wt%) | Example 7 | Example 8 | Example 9 | Example 10 | Example 11 | Example 12 |
| SiO 2 | 57 | 55 | 50 | 54.5 | 54 | 56.4 |
| Al 2O 3 | 5 | 15 | 15.5 | 16.5 | 18 | 15.6 |
| B 2O 3 | 1 | 1 | 2.5 | 1 | 1.4 | 4 |
| Na 2O | 12 | 0 | 2.4 | 5 | 5.8 | 8 |
| K 2O | 2 | 10 | 9.6 | 3 | 6.2 | 4 |
| MgO | 4 | 1 | 0.6 | 0 | 0.5 | 0 |
| CaO | 10 | 9 | 4 | 3 | 3.7 | 3 |
| SrO | 9 | 3 | 7 | 7 | 4.4 | 3 |
| BaO | 0 | 6 | 8.4 | 10 | 6 | 6 |
| Na 2O+K 2O | 14 | 10 | 12 | 8 | 12 | 12 |
| MgO+CaO+SrO+BaO | 23 | 19 | 20 | 20 | 14.6 | 12 |
| Strain point temperature (℃) | 560 | 631 | 627 | 625 | 626 | 621 |
| Heat-resistant stability Δ T (K) | 120 | 158 | 147 | 159 | 151 | 150 |
| Thermal expansivity (* 10 -7/K) | 95 | 75.3 | 83.5 | 75 | 78.9 | 79.1 |
| 102dpa.s temperature (℃) | 1445 | 1551 | 1519 | 1565 | 1551 | 1546 |
| 10 4The dpa.s temperature (℃) | 930 | 1170 | 1150 | 1149 | 1144 | 1082 |
Can clearly draw by above-described embodiment, with respect to Comparative Examples 6,7, the strain point temperature of above-described embodiment 1～5 and each component glass composition of 8～12 is all more than 620 ℃, and heat-resistant stability satisfies at 50-350 ℃ of glass composition thermal expansivity 75～85 * 10 simultaneously greater than 145K
-7In/K the scope, this makes glass composition of the present invention be used for CIGS solar cell substrate glass becomes possibility.
Among each embodiment, the glass composition temperature of fusion guarantees that below 1580 ℃, mold temperature is no more than 1175 ℃, and is higher slightly than fusing and the mold temperature of common soda-lime-silica glass, through suitable technology adjustment, can realize by enough floating process.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (2)
1. a sheet glass that is used for the CIGS thin-film solar cells is characterized in that, by weight percentage, is made of following composition:
50% SiO
2,
15.5% Al
2O
3,
2.5% B
2O
3,
2.4% Na
2O,
9.6% K
2O,
0.6% MgO,
4% CaO,
8.4% BaO,
7% SrO,
Wherein, described Na
2O and K
2The total amount of O is 12%, the total amount of described MgO, CaO, SrO and BaO is 20%;
The strain point temperature of described sheet glass for the CIGS thin-film solar cells is 627 ℃;
Described sheet glass for the CIGS thin-film solar cells is 83.5 * 10 at 50～350 ℃ of temperature range thermal expansivity
-7/ K;
The heat-resistant stability of described sheet glass for the CIGS thin-film solar cells is 147K;
Described sheet glass for the CIGS thin-film solar cells is 10 in viscosity
2The temperature of glass liquid of dpa.s correspondence is at 1519 ℃, and viscosity is 10
4The temperature of glass liquid of dpa.s correspondence is 1150 ℃.
2. a preparation method who is used for the sheet glass of CIGS thin-film solar cells is characterized in that, comprising: be formulated as follows frit according to weight percent:
50% SiO
2,
15.5% Al
2O
3,
2.5% B
2O
3,
2.4% Na
2O,
9.6% K
2O,
0.6% MgO,
4% CaO,
8.4% BaO,
7% SrO,
Wherein, Na
2O and K
2The total amount of O is 12%, the total amount of MgO, CaO, SrO and BaO is 20%; And
After described frit fusion, form sheet glass by the float glass process moulding.
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|---|---|---|---|
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| CN102464448B true CN102464448B (en) | 2013-10-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967517A (en) * | 2016-05-06 | 2016-09-28 | 东莞市银特丰光学玻璃科技有限公司 | Formula and preparation technology of high-strength plate glass |
| CN108083640A (en) * | 2017-11-26 | 2018-05-29 | 常州工学院 | A kind of solar photovoltaic assembly material |
| CN108863047B (en) * | 2018-08-09 | 2020-05-15 | 深圳市名洋能源科技有限公司 | CIGS thin-film solar cell glass plate based on 3D printing technology and processing technology thereof |
| CN116177871A (en) * | 2019-11-27 | 2023-05-30 | 成都光明光电股份有限公司 | Alkali-free glass |
| CN114685043A (en) * | 2022-03-30 | 2022-07-01 | 彩虹显示器件股份有限公司 | Electronic glass with high liquidus viscosity and preparation method thereof |
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|---|---|---|---|---|
| JP2008280189A (en) * | 2007-05-08 | 2008-11-20 | Nippon Electric Glass Co Ltd | Glass substrate for solar cell, and method of manufacturing the same |
| JP2010059038A (en) * | 2008-08-04 | 2010-03-18 | Nippon Electric Glass Co Ltd | Reinforced glass and method of manufacturing the same |
| CN101679105A (en) * | 2007-06-07 | 2010-03-24 | 日本电气硝子株式会社 | Hardened glass substrate, and method for production thereof |
| DE102009050987B3 (en) * | 2009-05-12 | 2010-10-07 | Schott Ag | Planar, curved, spherical or cylindrical shaped thin film solar cell comprises sodium oxide-containing multicomponent substrate glass, which consists of barium oxide, calcium oxide, strontium oxide and zinc oxide |
-
2010
- 2010-11-11 CN CN 201010542766 patent/CN102464448B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008280189A (en) * | 2007-05-08 | 2008-11-20 | Nippon Electric Glass Co Ltd | Glass substrate for solar cell, and method of manufacturing the same |
| CN101679105A (en) * | 2007-06-07 | 2010-03-24 | 日本电气硝子株式会社 | Hardened glass substrate, and method for production thereof |
| JP2010059038A (en) * | 2008-08-04 | 2010-03-18 | Nippon Electric Glass Co Ltd | Reinforced glass and method of manufacturing the same |
| DE102009050987B3 (en) * | 2009-05-12 | 2010-10-07 | Schott Ag | Planar, curved, spherical or cylindrical shaped thin film solar cell comprises sodium oxide-containing multicomponent substrate glass, which consists of barium oxide, calcium oxide, strontium oxide and zinc oxide |
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Inventor after: Bai Jinghua Inventor after: Wang Xingjuan Inventor after: Tao Wugang Inventor after: Du Yong Inventor before: Bai Jinghua Inventor before: Wang Xingjuan Inventor before: Tao Wugang Inventor before: Du Yong |
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Effective date of registration: 20160505 Address after: Jingtou town 511600 Guangdong city of Qingyuan province Fogang County Industrial Park eight Jinling Jinling Road No. 1 Patentee after: QINGYUAN CSG NEW ENERGY-SAVING MATERIALS CO., LTD. Address before: Six industrial intersection, Shekou Industrial Zone, Shenzhen, Guangdong, Nanshan District 518047, China Patentee before: CSG Holding Co., Ltd. |