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    • 37. 发明授权
    • Method for making spherical crystals
    • 制作球状晶体的方法
    • US5817173A
    • 1998-10-06
    • US656327
    • 1996-06-11
    • Josuke Nakata
    • Josuke Nakata
    • C30B29/60C30B11/00C30B13/00C30B29/66C30B30/08H01L27/14C30B29/62
    • C30B11/00C30B13/00C30B29/60
    • The present invention relates to a method for forming crystal substrates on which can be easily formed spherical crystals which have superior crystal structure and little defect in shape. The present invention also relates to a method for making crystal substrates on which can be easily formed spherical crystals which have little defect in shape and from which impurities have been removed. Projections are formed integrally from a semiconductor crystal base, and flow regulating film is formed to cover the entire outer surface of the crystal base and a base portion of the projections. A heating beam is applied to the tips of the projections, and the end portions of the projections are melted. The surface tension of the melt and the melt regulation by the flow regulating film act to solidify the melt in a spherical shape, thus forming a spherical crystal.
    • PCT No.PCT / JP95 / 01595 Sec。 371日期:1996年6月11日 102(e)日期1996年6月11日PCT提交1995年8月7日PCT公布。 公开号WO96 / 15298 日期1996年5月23日本发明涉及一种形成晶体基板的方法,其中可以容易地形成具有优异的晶体结构和形状缺陷的球形晶体。 本发明还涉及一种制造晶体基板的方法,其上可以容易地形成几乎没有形状缺陷并且杂质被去除的球形晶体。 突起从半导体晶体基体一体地形成,并且形成流动调节膜以覆盖晶体基底的整个外表面和突起的基部。 将加热梁施加到突起的尖端,并且突起的端部熔化。 熔体的表面张力和流动调节膜的熔体调节作用使熔体固化为球形,从而形成球状晶体。
    • 40. 发明授权
    • Method of making optically fused semiconductor powder for solar cells
    • 制造太阳能电池用光熔半导体粉末的方法
    • US5556791A
    • 1996-09-17
    • US368229
    • 1995-01-03
    • Gary D. StevensFrancois A. Padovani
    • Gary D. StevensFrancois A. Padovani
    • B22F1/00C30B13/00H01L31/04H01L31/18
    • C30B29/06C30B13/00H01L31/1804Y02E10/547Y02P70/521Y10S117/90Y10T117/102
    • A method and apparatus for forming semiconductor particles (42) for solar cells using an optical furnace (30). Uniform mass piles (26) of powered semiconductor feedstock are almost instantaneously optically fused to define high purity semiconductor particles without oxidation. The high intensity optical energy is directed and focused to the semiconductor feedstock piles (26) advanced by a conveyer medium (16) thereunder. The semiconductor feedstock piles (26) are at least partially melted and fused to form a single semiconductor particle (42) which can be later separated from a refractory layer (18) by a separator (50), preferably comprised of silica. The apparatus (10) and process is automated, providing a high throughput to produce uniform mass, high quality spheres for realizing high efficiency solar cells. The apparatus is energy efficient, whereby process parameters can be easily and quickly established.
    • 一种用于使用光学炉(30)形成用于太阳能电池的半导体颗粒(42)的方法和装置。 动力半导体原料的均匀质量堆(26)几乎被瞬时光学融合,以限定高纯度半导体颗粒而没有氧化。 高强度光能被引导并聚焦到由其下方的输送介质(16)前进的半导体原料桩(26)。 半导体原料桩(26)至少部分地熔化并熔化以形成单个半导体颗粒(42),其可以稍后通过隔板(50)从耐火层(18)分离,优选由二氧化硅组成。 设备(10)和过程是自动化的,提供高产量以产生用于实现高效率太阳能电池的均匀质量,高质量的球体。 该装置是高能效的,由此可以容易且快速地建立工艺参数。