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    • 7. 发明申请
    • METHOD FOR THE PRODUCTION OF SEMICONDUCTOR RIBBONS FROM A GASEOUS FEEDSTOCK
    • 从气候饲料生产半导体纤维的方法
    • WO2009028974A1
    • 2009-03-05
    • PCT/PT2007/000038
    • 2007-08-31
    • FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOAVALLERA, AntónioSERRA, JoãoMAIA ALVES, JorgeBRITO, Miguel
    • VALLERA, AntónioSERRA, JoãoMAIA ALVES, JorgeBRITO, Miguel
    • C23C16/00C30B23/00C30B25/00C30B25/18C30B29/06
    • C30B29/06C23C16/01C23C16/24C30B23/00C30B23/025C30B25/00C30B25/18C30B33/02
    • The present invention provides a method for the production of semiconductor ribbons using exclusively a gaseous feedstock. A fine powder of semiconductor material is produced by decomposition, within the gas phase, of a gaseous feedstock. A layer of this semiconductor powder is uniformly distributed, compressed and flattened over a planar substrate, which is continuously moving in one direction. This said layer of semiconductor powder is, in the followinh stage, heated to a temperature sufficient to decompose the said gaseous feedstock on its surface. A continuous flow of the said gaseous feedstock over said powder layer is ensured so that a solid plate of semiconductor material grows over the said layer of semiconductor powder. After the growth stage, during which the solid plate has grown to a convenient thickness, the said solid plate of semiconductor material is separated from the said layer of semiconductor powder and substrate. This self supporting plate is then heated to a high temperature in an atmosphere containing gaseous feedstock to complete its growth and become a ribbon with the apropriate structural propreties for further processing. The present invention is applicable, for example, in the industry of silicon ribbon production for photovoltaic application.
    • 本发明提供一种仅使用气态原料生产半导体带的方法。 半导体材料的细粉末是通过在气相中气态原料的分解产生的。 这种半导体粉末的层在均匀分布,压缩和平坦化的平面基板上,该平面基板在一个方向上连续移动。 该所述半导体粉末层在随后阶段被加热到足以在其表面上分解所述气态原料的温度。 确保所述气态原料在所述粉末层上的连续流动,使得半导体材料的固体板在所述半导体粉末层上生长。 在生长阶段之后,固体板已经生长到方便的厚度,所述半导体材料的固体板与所述半导体粉末和衬底层分离。 然后将该自支撑板在含有气态原料的气氛中加热到高温,以完成其生长,并成为具有适当结构性质的带以进一步加工。 本发明可应用于例如用于光伏应用的硅带生产的行业。