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    • 2. 发明申请
    • Active wafer cooling during damage engineering implant to enchance buried oxide formation in simox wafers
    • 在损伤工程植入期间激活晶片冷却,以增强simox晶圆中的掩埋氧化物形成
    • US20030087504A1
    • 2003-05-08
    • US10011518
    • 2001-11-05
    • Yuri ErokhinJulian G. Blake
    • H01L021/76
    • H01L21/76243Y10S438/966
    • The present invention provides methods and system for forming a buried oxide layer (BOX) region in a semiconductor substrate, such as, a silicon wafer. In one aspect, in a method of the invention, an initial dose of oxygen ions is implanted in the substrate while maintaining the substrate temperature in a range of about 300null C. to 600null C. Subsequently, a second dose of oxygen ions is implanted in the substrate while actively cooling the substrate to maintain the substrate temperature in range of about 50null C. to 150null C. These ion implantation steps are followed by an annealing step in an oxygen containing atmosphere to form a continuous BOX region in the substrate. In one preferred embodiment, the initial ion implantation step is performed in a chamber that includes a device for heating the substrate while the second ion implantation step is performed in a separate chamber that is equipped with a device for actively cooling the substrate. The annealing step can be performed in a third chamber or in either of the first or second chambers.
    • 本发明提供了在诸如硅晶片的半导体衬底中形成掩埋氧化物层(BOX)区的方法和系统。 一方面,在本发明的方法中,将初始剂量的氧离子注入到衬底中,同时将衬底温度保持在约300℃至600℃的范围内。随后,第二剂量的氧离子为 植入衬底中同时主动冷却衬底,以将衬底温度维持在约50℃至150℃的范围内。这些离子注入步骤之后是在含氧气氛中的退火步骤,以形成连续的BOX区域 基质。 在一个优选实施例中,初始离子注入步骤在包括用于加热衬底的器件的腔室中执行,而第二离子注入步骤在配备有用于主动冷却衬底的器件的单独室中执行。 退火步骤可以在第三室或第一室或第二室中的任一个中进行。
    • 3. 发明申请
    • Method of achieving higher inversion layer mobility in novel silicon carbide semiconductor devices
    • 在新型碳化硅半导体器件中实现更高反型层迁移率的方法
    • US20020130325A1
    • 2002-09-19
    • US10055378
    • 2002-01-22
    • PHILIPS ELECTRONICS NORTH AMERICA CORPORATION
    • Dev Alok
    • H01L031/0312
    • H01L29/7802H01L21/02532H01L21/02667H01L21/0445H01L21/049H01L21/2022H01L29/1608H01L29/66068Y10S438/966Y10S438/969
    • The invention provides a method for the production of high quality thermally grown oxide on top of silicon carbide. The high quality oxide is obtained by selectively removing the carbon from the silicon carbide in the areas where oxide formation is desired or required. The method includes the steps of: (a) amorphizing the silicon carbide in at least one region of a monocrystalline silicon carbide substrate by ion implantation; (b) removing at least an effective amount of the carbon resulting from amorphizing the silicon carbide with an etchant effective to selectively remove carbon from the amorphized silicon carbide to produce an amorphous silicon-rich region; and (c) forming an oxide on the etched surface to provide a device which has an oxide region on (1) either an amorphous silicon-rich region which is (i) predominantly or entirely amorphous silicon or (ii) a mixture of predominantly amorphous silicon in combination with minor amounts of amorphous silicon carbide and/or silicon dioxide or (2) a monocrystalline silicon region; wherein (1) or (2) is present on a region of a silicon carbide substrate, or (3) a region of a silicon carbide substrate.
    • 本发明提供了一种在碳化硅顶部生产高质量热生长氧化物的方法。 通过在需要或需要氧化物形成的区域中选择性地除去碳化硅中的碳而获得高质量的氧化物。 该方法包括以下步骤:(a)通过离子注入在单晶碳化硅衬底的至少一个区域中使碳化硅非晶化; (b)用蚀刻剂除去至少有效量的碳非晶化所产生的碳,以有选择地从非晶化碳化硅中除去碳以产生无定形富硅区; 和(c)在蚀刻表面上形成氧化物以提供在(1)无定形富硅区域上具有氧化物区域的器件,所述非晶硅富集区域是(i)主要或完全非晶硅或(ii)主要为非晶态的 硅与少量非晶碳化硅和/或二氧化硅组合,或(2)单晶硅区; 其中(1)或(2)存在于碳化硅衬底的区域上,或(3)碳化硅衬底的区域。