CN107767986A - 一种背钝化太阳能铝浆 - Google Patents
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- 239000004411 aluminium Substances 0.000 title claims abstract description 30
- 238000002161 passivation Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000011521 glass Substances 0.000 claims abstract description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 10
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- -1 0.7-3.5% Inorganic materials 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052710 silicon Inorganic materials 0.000 abstract description 14
- 239000010703 silicon Substances 0.000 abstract description 14
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 238000009835 boiling Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 2
- 239000005331 crown glasses (windows) Substances 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009288 screen filtration Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Abstract
本发明涉及一种背钝化太阳能铝浆,其特征在于:该铝浆的组成及其重量百分数为:铝粉75~85%、银粉5‑20%、无铅玻璃粉2‑8%、硬脂酸锌0.5‑2%、钛酸酯偶联剂1~4%,余量为有机载体,其中各组分的重量百分数之和为100%。将所述铝粉、银粉、硬脂酸锌、钛酸酯偶联剂、有机载体和无铅玻璃粉混合均匀后用三辊研磨机轧至细度≤15μm,粘度为25~37Pa.s的背钝化太阳能电池铝浆。该晶体硅太阳能背场铝浆,光电转化效率高,附着力高,且高温老化后附着力转化效率衰减小,耐水煮性能好。
Description
技术领域
本发明涉及一种晶体硅太阳能用背场铝浆,具体还涉及一种高效低翘曲度晶体硅太阳能背场铝浆及其制备方法,属于太阳能电池技术领域。
背景技术
降低太阳能发电成本,是竞争日益激烈的光伏产业追求的目标。第一:降低硅原料成本,一般需要向更薄的硅片发展,采用更薄的硅片是以后晶体硅太阳能产业发展的趋势之一。硅原料的缺乏,加速了硅片向薄片化发展,许多光伏企业所用的硅片的厚度已经在180~220μm之间,而现阶段的太阳能背面基本上是采用铝背场,这种铝背场起到一个P+层的作用,阻止少数载流子向背表面的迁移虽然可以减少背面的复合速度,使背面复合速度在1000~10000cm/s,但同时也会带来一些新的问题,由于铝和硅的热膨胀系数的不同,在硅片小于150μm的时候,经过烧结之后,片子就会弯曲,在一定程度上提高了电池生产线和组件的碎片率,影响产能输出。而且由于晶体硅是间隙带材料,光吸收系数小,太阳能厚度减小时,由于透射光引起的损失随着厚度的减小而增大,对于间接禁带材料硅来说,这种损失比直接禁带材料的大。第二:提高电池片的转换效率。这就需要新的技术和薄片化相结合。一方面,开发出新的抗弯曲的浆料(对于薄片)是一种途径,虽然这方面已经取得不错的成绩,但是由于铝背场的本征缓和钝化的特性,当硅片的厚度小于150μm的时候,铝背场的这种特性就会对太阳能效率存在很大的限制。另一方面,对于薄片化的电池片,需要很好的背面钝化效果。
发明内容
本发明的首要目的在于,克服现有技术中存在的问题,提供一种性能优越的背钝化太阳能背场铝浆。
为解决以上技术问题,本发明所提供的一种背钝化太阳能铝浆,其特征在于:该铝浆的组成及其重量百分数为:铝粉75~85%、银粉5-20%、无铅玻璃粉2-8%、硬脂酸锌0.5-2%、钛酸酯偶联剂1-4%,余量为有机载体,其中各组分的重量百分数之和为100%。所述铝粉为纯度>99.9%,1-2um的球形铝粉,振实密度为≥1.1g/cm3,氧含量为1.3-1.8,3-4um的球形铝粉振实密度为1.30g/cm3,氧含量为0.6-0.9,5-7um的球形铝粉振实密度为1.45g/cm3,氧含量为0.30-0.40形貌为球形。所述有机载体为:硬脂酸2~5%、丁基卡必醇40~65%、丁基卡必醇醋酸酯20~30%、环氧树脂5~10%、松油醇20%~30%、邻苯二甲二乙酯1~3%。所述无铅玻璃粉按质量份组成为:ZnO35—55%,Bi2O310-30%,H2B2O412-20%,SiO20.5-3%,CaCO3,0.7-3.5%,Al2O30.5—2%,Sb2O310-20%、BaCO3 10-15%、MoO 3-5%、BeO 1-3%、La2O3 3-6%。
所述硬脂酸锌1份。所述钛酸酯偶联剂2份。所述银粉纯度99%5份。
本发明的优点在于,克服现有技术中存在的问题,提供一种晶体硅太阳能背场铝浆的制备方法,制成的铝浆光电转化效率高,附着力高,且高温老化后附着力转化效率衰减小,耐水煮性能好。
具体实施方式
实施例一
硬脂酸 | 3% |
丁基卡必醇 | 50% |
丁基卡必醇醋酸酯 | 20% |
环氧树脂 | 5% |
松油醇 | 20% |
邻苯二甲二乙酯 | 2% |
(1)制取所述有机载体:将上述组分按比例称取后,置于反应釜内加热至80~100℃,边加热边搅拌,搅拌5-8h,用200目筛网过滤载体,放置在不锈钢桶中待用。
ZnO | 35% |
Bi2O3 | 18% |
H2B2O4 | 15% |
SiO2 | 2% |
CaCO3 | 2% |
Al2O3 | 1% |
Sb2O3 | 10% |
BaCO3 | 10% |
MoO | 3% |
BeO | 1% |
La2O3 | 3% |
(2)制取无铅玻璃粉:将上述组分按比例称取,用混料机混合均匀后,装入石英坩埚中,在110℃烘箱中烘干2~3h,然后将石英坩埚取出置于箱式炉中以20℃/min升温至1000℃~1300℃温度下熔炼0.3~0.8h,然后采用去离子水淬火后将玻璃渣烘干,放入颚式粉碎机中,粉碎至25μm一下。然后干法球磨1.5~3h,过筛得到粒径2.3μm以下的无铅玻璃粉;
铝粉 | 75% |
银粉 | 14% |
硬脂酸锌 | 1% |
钛酸酯偶联剂 | 2% |
有机载体 | 6% |
无铅玻璃粉 | 2% |
(3)将所述铝粉、银粉、硬脂酸锌、钛酸酯偶联剂、有机载体和无铅玻璃粉混合均匀后用三辊研磨机轧至细度≤15μm,粘度为25~37Pa.s的背钝化太阳能铝浆
实施例二:
硬脂酸 | 4% |
丁基卡必醇 | 45% |
丁基卡必醇醋酸酯 | 20% |
环氧树脂 | 8% |
松油醇 | 22% |
邻苯二甲二乙酯 | 1% |
(1)制取所述有机载体:将上述组分按比例称取后,置于反应釜内加热至80~100℃,边加热边搅拌,搅拌5-8h,用200目筛网过滤载体,放置在不锈钢桶中待用。
ZnO | 44% |
Bi2O3 | 13% |
H2B2O4 | 12% |
SiO2 | 1% |
CaCO3 | 1.5% |
Al2O3 | 0.5% |
Sb2O3 | 10% |
BaCO3 | 10% |
MoO | 4% |
BeO | 1% |
La2O3 | 3% |
(2)制取无铅玻璃粉:将上述组分按比例称取,用混料机混合均匀后,装入石英坩埚中,在110℃烘箱中烘干2~3h,然后将石英坩埚取出置于箱式炉中以20℃/min升温至1000℃~1300℃温度下熔炼0.3~0.8h,然后采用去离子水淬火后将玻璃渣烘干,放入颚式粉碎机中,粉碎至25μm一下。然后干法球磨1.5~3h,过筛得到粒径2.3μm以下的无铅玻璃粉;
铝粉 | 76% |
银粉 | 8% |
硬脂酸锌 | 1.5% |
钛酸酯偶联剂 | 2% |
有机载体 | 5.5% |
无铅玻璃粉 | 6% |
(3)将所述铝粉、银粉、硬脂酸锌、钛酸酯偶联剂、有机载体和无铅玻璃粉混合均匀后用三辊研磨机轧至细度≤15μm,粘度为25~37Pa.s的背钝化太阳能铝浆。
上述实施例外,本发明还可以有其他实施方式,凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围内。
Claims (7)
1.一种背钝化太阳能铝浆,其特征在于:该铝浆的组成及其重量百分数为:铝粉75~85%、银粉5-20%、无铅玻璃粉2-8%、硬脂酸锌0.5-2%、钛酸酯偶联剂1-4%,余量为有机载体,其中各组分的重量百分数之和为100%。
2.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述铝粉为纯度>99.9%,1-2um的球形铝粉,振实密度为≥1.1g/cm3,氧含量为1.3-1.8,3-4um的球形铝粉振实密度为1.30g/cm3,氧含量为0.6-0.9,5-7um的球形铝粉振实密度为1.45g/cm3,氧含量为0.30-0.40形貌为球形。
3.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述有机载体为:硬脂酸2~5%、丁基卡必醇40~65%、丁基卡必醇醋酸酯20~30%、环氧树脂5~10%、松油醇20%~30%、邻苯二甲二乙酯1~3%。
4.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述无铅玻璃粉按质量份组成为:ZnO 35-55%,Bi2O310-30%,H2B2O412-20%,SiO20.5-3%,CaCO3,0.7-3.5%,Al2O30.5-2%,Sb2O310-20%、BaCO3 10-15%、MoO 3-5%、BeO 1-3%、La2O3 3-6%。
5.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述硬脂酸锌1份。
6.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述钛酸酯偶联剂2份。
7.根据权利要求1所述的背钝化太阳能铝浆,其特征在于:所述银粉纯度99%5份。
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CN110544549A (zh) * | 2018-05-29 | 2019-12-06 | 磐采股份有限公司 | 用于局部背面场太阳能电池的铝浆及应用该铝浆的局部背面场太阳能电池 |
CN113880435A (zh) * | 2021-07-16 | 2022-01-04 | 杭州正银电子材料有限公司 | 一种perc背面银浆用改性玻璃粉及其制备方法和应用 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN108766662A (zh) * | 2018-04-02 | 2018-11-06 | 海宁市丁桥镇永畅知识产权服务部 | 高效率低翘曲太阳能电池背面铝浆的生产方法 |
CN110544549A (zh) * | 2018-05-29 | 2019-12-06 | 磐采股份有限公司 | 用于局部背面场太阳能电池的铝浆及应用该铝浆的局部背面场太阳能电池 |
CN110544549B (zh) * | 2018-05-29 | 2021-07-30 | 磐采股份有限公司 | 用于局部背面场太阳能电池的铝浆及应用该铝浆的局部背面场太阳能电池 |
CN113880435A (zh) * | 2021-07-16 | 2022-01-04 | 杭州正银电子材料有限公司 | 一种perc背面银浆用改性玻璃粉及其制备方法和应用 |
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