ELECTROMAGNETIC CASTING METHOD AND APPARATUS FOR POLYCRYSTALLINE SILICON
    1.
    发明申请
    ELECTROMAGNETIC CASTING METHOD AND APPARATUS FOR POLYCRYSTALLINE SILICON 有权
    电磁铸造方法和聚硅氧烷的设备

    公开(公告)号:US20130255315A1

    公开(公告)日:2013-10-03

    申请号:US13845507

    申请日:2013-03-18

    IPC分类号: H01L31/028

    摘要: Disclosed is an electromagnetic casting method of polycrystalline silicon which is characterized in that polycrystalline silicon is continuously cast by charging silicon raw materials into a bottomless cold mold, melting the silicon raw materials using electromagnetic induction heating, and pulling down the molten silicon to solidify it, wherein the depth of solid-liquid interface before the start of the final solidification process is decreased by reducing a pull down rate of ingot in a final phase of steady-state casting. By adopting the method, the region of precipitation of foreign substances in the finally solidified portion of ingot can be reduced and cracking generation can be prevented upon production of a polycrystalline silicon as a substrate material for a solar cell.

    摘要翻译: 公开了一种多晶硅的电磁铸造方法,其特征在于,通过将硅原料装入无底冷模中,通过使用电磁感应加热来熔化硅原料,并拉下熔融硅使其固化,连续铸造多晶硅, 其中在最终凝固过程开始之前的固 - 液界面的深度通过在稳态铸造的最后阶段中通过降低锭的下拉速率来降低。 通过采用该方法,可以减少在锭的最终凝固部分中异物沉淀的区域,并且在生产作为太阳能电池的基板材料的多晶硅时可以防止产生裂纹。

    Silicon casting apparatus
    2.
    发明申请
    Silicon casting apparatus 审中-公开
    硅铸造设备

    公开(公告)号:US20090044926A1

    公开(公告)日:2009-02-19

    申请号:US12222743

    申请日:2008-08-15

    IPC分类号: B22D11/041

    摘要: In a silicon casting apparatus according to the present invention, silicon melted by electromagnetic induction heating is continuously solidified using an electrically-conductive bottomless cold crucible and an induction coil surrounding the cold crucible. The cold crucible is made of copper alloy containing beryllium (desirably containing beryllium of 0.1 to 5 mass %), whereby the generation of electric-discharge flaw can be effectively prevented in performing electromagnetic casting. The use of the silicon casting apparatus according to the present invention can greatly extend a crucible life to reduce facility costs. Additionally, a solar-cell silicon ingot can be produced with high quality.

    摘要翻译: 在根据本发明的硅铸造装置中,通过电磁感应加热熔化的硅使用导电底底冷坩埚和围绕冷坩埚的感应线圈连续固化。 冷坩埚由含有铍(期望含有0.1〜5质量%的铍)的铜合金构成,能够有效地防止在进行电磁铸造时产生放电瑕疵。 根据本发明的硅铸造装置的使用可以极大地延长坩埚寿命以减少设备成本。 另外,可以以高品质生产太阳能电池硅锭。

    Casting method of silicon ingot and cutting method of the same
    4.
    发明授权
    Casting method of silicon ingot and cutting method of the same 失效
    硅锭的铸造方法和切割方法相同

    公开(公告)号:US07749324B2

    公开(公告)日:2010-07-06

    申请号:US12003343

    申请日:2007-12-21

    IPC分类号: C30B15/00 C30B21/04 C30B9/00

    摘要: The present invention includes a method for casting a silicon ingot by using a continuous casting method by means of an electromagnetic induction, and a method for cutting the silicon ingot as a starting material into plural silicon blocks. When the silicon blocks with a square section are cut out, the sectional shape of the silicon ingot is set to be rectangular. Not less than 6 pieces of equal-sized silicon blocks are cut out from the silicon ingot, thereby enabling to enhance the manufacturing efficiency to a great extent. And since the amount of excision of the edge per silicon block is reduced, the production yield can be enhanced. Further, since the proportion of columnar crystals with large grain size inside the ingot can be increased, it becomes possible to enhance the conversion efficiency of a solar battery using the silicon block as a substrate material.

    摘要翻译: 本发明包括通过使用电磁感应的连续铸造法铸造硅锭的方法,以及将硅锭作为原料切割成多个硅块的方法。 当切出具有正方形截面的硅块时,将硅锭的截面形状设置为矩形。 从硅锭切出不少于6个等尺寸的硅块,从而能够在很大程度上提高制造效率。 并且,由于每块硅块的边缘切除量减少,所以能够提高生产率。 此外,由于能够提高锭内的晶粒大的柱状晶体的比例,所以可以提高使用硅块作为基板材料的太阳能电池的转换效率。

    ELECTROMAGNETIC CASTING METHOD OF SILICON INGOT
    6.
    发明申请
    ELECTROMAGNETIC CASTING METHOD OF SILICON INGOT 审中-公开
    硅胶的电磁铸造方法

    公开(公告)号:US20130186144A1

    公开(公告)日:2013-07-25

    申请号:US13793167

    申请日:2013-03-11

    IPC分类号: H01L31/18

    摘要: Disclosed is an electromagnetic casting method of a silicon ingot in which a polycrystalline silicon ingot is continuously cast by charging silicon raw materials into a bottomless cold copper mold, melting the charged silicon raw materials through electromagnetic induction, pulling down to solidify the molten silicon, in which the length of a part of copper mold positioned below a lower end of an induction coil surrounding the copper mold is set to more than 40 mm and 180 mm or less. According to this method, a copper contamination of a silicon ingot incurred by a copper cold mold can be suppressed to produce a silicon ingot which is suitable as a starting material of the substrate of a solar cell.

    摘要翻译: 公开了一种硅锭的电铸铸造方法,其中通过将硅原料装入无底冷铜模具中连续铸造多晶硅锭,通过电磁感应熔化带电硅原料,拉下固化熔融硅, 其位于铜模周围的感应线圈的下端下方的铜模的一部分的长度被设定为大于40mm和180mm以下。 根据该方法,可以抑制由铜冷模产生的硅锭的铜污染,以制造适合作为太阳能电池基板的起始材料的硅锭。

    SILICON ELECTROMAGNETIC CASTING APPARATUS
    8.
    发明申请
    SILICON ELECTROMAGNETIC CASTING APPARATUS 有权
    硅电磁铸造设备

    公开(公告)号:US20130133374A1

    公开(公告)日:2013-05-30

    申请号:US13814809

    申请日:2010-11-17

    IPC分类号: B22D27/04

    摘要: Provided is a silicon electromagnetic casting apparatus that is capable of stably producing polycrystalline silicon used as a solar cell substrate material, having a bottomless cold mold and an induction heating coil, the apparatus for pulling down the silicon melted through electromagnetic induction heating by means of the induction coil and solidifying the silicon melt; further including a plasma torch for generating a transferable plasma arc and a top heater configured so as to face a top surface of the molten silicon, the top heater for generating heat through electromagnetic induction by means of the induction coil. The apparatus enables, upon production of a high quality polycrystalline silicon ingot as a solar cell substrate material along with plasma heating, stable production thereof without cracking in a final solidification portion.

    摘要翻译: 本发明提供一种能够稳定地制造用作太阳能电池基板材料的多晶硅的硅电磁铸造装置,具有无底冷模和感应加热线圈,该装置通过电磁感应加热而熔化的硅 感应线圈并固化硅熔体; 还包括用于产生可转移等离子体电弧的等离子体焰炬和配置为面对熔融硅的顶表面的顶部加热器,所述顶部加热器通过感应线圈通过电磁感应产生热量。 该装置能够在生产高质量的多晶硅锭作为太阳能电池基板材料以及等离子体加热时,在最终凝固部分中稳定地生产而不会发生裂纹。

    Coated optical glass fibers and method for production thereof
    9.
    发明授权
    Coated optical glass fibers and method for production thereof 失效
    涂布光学玻璃纤维及其制造方法

    公开(公告)号:US4396645A

    公开(公告)日:1983-08-02

    申请号:US305244

    申请日:1981-09-24

    摘要: Coated optical glass fibers are described, wherein the coating composition comprises an unsaturated polyester containing at least one of (1) polyethylene glycol or polypropylene glycol having an average molecular weight of from 200 to 1,000 as a glycol component, (2) a long chain saturated aliphatic dibasic acid containing 12 or more carbon atoms as saturated polybasic acid component, and an acrylate or methacrylate, and (3) a long chain saturated aliphatic dibasic acid containing 6 or more carbon atoms as a saturated polybasic acid component and a long chain aliphatic dihydric alcohol containing 4 or more carbon atoms as a glycol component; and an acrylate or methacrylate.

    摘要翻译: 描述了涂覆的光学玻璃纤维,其中涂料组合物包含含有(1)作为二醇组分的平均分子量为200至1,000的聚乙二醇或聚丙二醇中的至少一种的不饱和聚酯,(2)长链饱和 作为饱和多元酸成分含有12个以上碳原子的脂肪族二元酸和丙烯酸酯或甲基丙烯酸酯,和(3)含有6个以上碳原子的长链饱和脂肪族二元酸作为饱和多元酸成分和长链脂肪族二元 含有4个以上碳原子的醇作为二醇成分; 和丙烯酸酯或甲基丙烯酸酯。

    Silicon electromagnetic casting apparatus
    10.
    发明授权
    Silicon electromagnetic casting apparatus 有权
    硅电磁铸造设备

    公开(公告)号:US08769993B2

    公开(公告)日:2014-07-08

    申请号:US13814809

    申请日:2010-11-17

    IPC分类号: C03B15/00

    摘要: Provided is a silicon electromagnetic casting apparatus that is capable of stably producing polycrystalline silicon used as a solar cell substrate material, having a bottomless cold mold and an induction heating coil, the apparatus for pulling down the silicon melted through electromagnetic induction heating by means of the induction coil and solidifying the silicon melt; further including a plasma torch for generating a transferable plasma arc and a top heater configured so as to face a top surface of the molten silicon, the top heater for generating heat through electromagnetic induction by means of the induction coil. The apparatus enables, upon production of a high quality polycrystalline silicon ingot as a solar cell substrate material along with plasma heating, stable production thereof without cracking in a final solidification portion.

    摘要翻译: 本发明提供一种能够稳定地制造用作太阳能电池基板材料的多晶硅的硅电磁铸造装置,具有无底冷模和感应加热线圈,该装置通过电磁感应加热而熔化的硅 感应线圈并固化硅熔体; 还包括用于产生可转移等离子体电弧的等离子体焰炬和配置为面对熔融硅的顶表面的顶部加热器,所述顶部加热器通过感应线圈通过电磁感应产生热量。 该装置能够在生产高质量的多晶硅锭作为太阳能电池基板材料以及等离子体加热时,在最终凝固部分中稳定地生产而不会发生裂纹。