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    • 54. 发明授权
    • Eccentric feed rotation in zone refining
    • 区域精炼中的偏心进给旋转
    • US3561931A
    • 1971-02-09
    • US3561931D
    • 1967-08-04
    • SIEMENS AG
    • VOGEL CARL-HEINZSPORRER LUDWIG
    • C30B13/32B01J17/10
    • C30B13/32Y10S117/91Y10S117/912Y10T117/1072Y10T117/1076
    • PROCESS OF ZONE MELTING A SEMICONDUCTOR ROD HAVING UNDER PROCESS, A RECRYSTALLIZED PORTION AND SUPPLY PORTION TO BE RECRYSTALLIZED, EACH SEPARATED FROM THE OTHER BY A MOLTEN ZONE, INCLUDES SUPPORTING THE ROD SUBSTANTIALLY VERTICALLY BY FIRST AND SECOND HOLDERS RESPECTIVELY LOCATED AT THE FREE ENDS OF THE SUPPLY ROD PORTION AND THE RECRYSTALLIZED ROD PORTION, FORMING THE MOLTEN ZONE IN THE ROD WITH AN ANNULAR HEATING DEVICE SPACED FROM AND SURROUNDING THE ROD, RELATIVELY MOVING THE ROD AND THE HEATING DEVICE IN A SUBSTANTIALLY VERTICAL DIRECTION SO AS TO PASS THE MOLTEN ZONE ALONG THE ROD, ROTATING AT LEAST ONE OF THE END HOLDERS ABOUT THE SUBSTANTIALLY VERTICAL AXIS OF THE ROD PORTION AT THE FREE END OF WHICH THE END HOLDER IS LOCATED, RELATIVELY MOVING THE END HOLDER TOWARDS ONE ANOTHER AND LATERALLY AWAY FROM ONE ANOTHER AT PREDETERMINED SPEEDS SO AS TO INCREASE THE THICKNESS OF THE RECRYSTALLIZED ROD PORTION IN A DIRECTION RADIALLY OUTWARDLY TO THE ANNULAR HEATING DEVICE AND ROTATING THE SUPPLY ROD PORTION ABOUT AN AXIS ECCENTRIC TO THE SUBSTANTIALLY VERTICAL AXIS OF THE SUPPLY ROD PORTION. APPARATUS FOR CARRYING OUT THE FOREGOING METHOD INCLUDES SUBSTANTIALLY VERTICAL SPACED END HOLDERS SUPPORTING BETWEEN THEM A VERTICALLY EXTENDING SEMICONDUCTOR ROD HAVING A RECRYSTALLIZED PORTION AND A SUPPLY PORTION TO BE RECRYSTALLIZED DIVIDED BY A MOLTEN ZONE, MEANS FOR RELATIVELY DISPLACING THE END HOLDERS TOWARD ONE ANOTHER, AN ANNULAR HEATING DEVICE SURROUNDING AND SPACED FROM THE ROD AND ADAPTED TO FORM THE MOLTEN ZONE IN THE ROD, MEANS FOR DISPLACING THE HEATING DEVICE ALONG THE ROD SO AS TO PASS THE MOLTEN ZONE ALONG THE ROD, MEANS FOR ROTATING AT LEAST ONE OF THE END HOLDERS ABOUT ITS SUBSTANTIALLY VERTICAL AXIS, MEANS FOR DISPLACING ONE OF THE END HOLDERS IN A DIRECTION TRANSVERSE TO THE AXIS THEREOF SO THAT THE RECRYSTALLIZED ROD PORTION IS FORMED WITH A SPECIFIC DIAMETER EXTENDING IN DIRECTION TOWARD THE ANNULAR HEATING DEVICE, AND MEANS FOR ROTATING THE SUPPLY ROD PORTION ABOUT AN AXIS ECCENTRIC TO THE AXIS OF THE SUPPLY ROD PORTION.
    • 60. 发明授权
    • Method of feeding a dopant in a continuously charging method
    • 以连续充电方式供给掺杂剂的方法
    • US5700321A
    • 1997-12-23
    • US687690
    • 1996-07-26
    • Keishi Niikura
    • Keishi Niikura
    • C30B15/02C30B15/04C30B29/06H01L21/208
    • C30B15/02C30B15/04Y10S117/912Y10S252/95
    • The object of the present invention affords a method of feeding dopant and a dopant composition used therein for easily preparing single crystals having a desired doping concentration during semiconductor substrate fabrication. In accordance with the present invention, a water solution containing oxides of the dopant is first added to the liquid containing colloidal silica. The colloidal silica can adsorb the oxides of the dopant to form a dopant composition. Around rod-shaped polysilicon, that is polysilicon rod, the dopant composition is discontinuously coated on the periphery of the polysilicon rods spaced at constant intervals and then dried. When the polysilicon rods are melted in an apparatus for manufacturing single crystals by a heater, dopant is protected by the glassed silica without evaporation. Accordingly, the dopant can be provided at a predetermined concentration to sustain the grown single crystals having a doping concentration as required.
    • 本发明的目的是提供一种在半导体衬底制造期间使掺杂剂和掺杂剂组合物用于容易地制备具有所需掺杂浓度的单晶的方法。 根据本发明,首先将含有掺杂剂氧化物的水溶液加入到含有胶体二氧化硅的液体中。 胶体二氧化硅可以吸附掺杂剂的氧化物以形成掺杂剂组合物。 在棒状多晶硅(即多晶硅棒)周围,掺杂剂组合物不连续地涂覆在多晶硅棒的周边上,间隔一定间隔然后干燥。 当多晶硅棒在用于通过加热器制造单晶的装置中熔化时,掺杂剂被玻璃状二氧化硅保护而不蒸发。 因此,可以以预定浓度提供掺杂剂,以维持根据需要具有掺杂浓度的生长单晶。