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    • 4. 发明申请
    • DEVICE AND METHOD FOR THE PRODUCTION OF MONOCRYSTALLINE OR MULTICRYSTALLINE MATERIALS, IN PARTICULAR MULTICRYSTALLINE SILICON
    • 用于生产特殊多晶硅的单晶或多晶材料的装置和方法
    • US20070266931A1
    • 2007-11-22
    • US11692005
    • 2007-03-27
    • Matthias MuellerMarkus FinkbeinerUwe SahrIngo SchwirtlichMichael Clauss
    • Matthias MuellerMarkus FinkbeinerUwe SahrIngo SchwirtlichMichael Clauss
    • C30B13/16
    • C30B29/06C30B11/003C30B35/002H01L31/04H01L31/1804Y02E10/546Y02P70/521Y10T117/10Y10T117/102Y10T117/108Y10T117/1088Y10T117/1092
    • The invention relates to a device and a method for the production of monocrystalline or multicrystalline materials using the vertical-gradient-freeze method, in particular silicon for applications in photovoltaics. According to the invention a low amount of wastage is achieved in that the cross section of the crucible is polygonal, in particular rectangular or square-shaped. Disposed around the circumference of the crucible there is a flat or planar heating element, in particular a jacket heater, which generates an inhomogeneous temperature profile. This corresponds to the temperature gradient formed in the centre of the crucible. The heat output of the flat heating element decreases going from the top end to the bottom end of the crucible. The flat heating element comprises a plurality of parallel heating webs, extending in a vertical or horizontal meandering course. The heat output from the webs is set by varying the conductor cross section. To avoid local overheating in corner areas of the crucible, constrictions of the cross section are provided at inversion zones of the meandering courses of the webs. The flat heating element can be formed from a plurality of interconnected individual segments.
    • 本发明涉及使用垂直梯度冷冻法,特别是用于光伏发电的硅的单晶或多晶材料的生产的装置和方法。 根据本发明,实现了少量的浪费,其中坩埚的横截面是多边形的,特别是矩形或正方形。 围绕坩埚的圆周布置有平坦或平面的加热元件,特别是夹套加热器,其产生不均匀的温度分布。 这对应于在坩埚中心形成的温度梯度。 扁平加热元件的热​​输出从坩埚的顶端到底端减小。 扁平加热元件包括多个平行的加热幅材,其在垂直或水平的曲折过程中延伸。 通过改变导体横截面来设定来自腹板的热量输出。 为了避免在坩埚的拐角区域局部过热,在腹板的蜿蜒过程的反转区域设有横截面的收缩。 扁平加热元件可以由多个相互连接的各个部分形成。