Method of manufacturing a semiconductor device
    21.
    发明授权
    Method of manufacturing a semiconductor device 有权
    制造半导体器件的方法

    公开(公告)号:US07794540B2

    公开(公告)日:2010-09-14

    申请号:US10539549

    申请日:2003-12-16

    摘要: Method of manufacturing a semiconductor device, in which on a region of silicon oxide (5) situated next to a region of monocrystalline silicon (4) at the surface (3) of a semiconductor body (1), a non-monocrystalline auxiliary layer (8) is formed. The auxiliary layer is formed in two steps. In the first step, the silicon body is heated in an atmosphere comprising a gaseous arsenic compound; in the second step it is heated in an atmosphere comprising a gaseous silicon compound instead of said arsenic compound. Thus, the regions of silicon oxide are provided with an amorphous or polycrystalline silicon seed layer in a self-aligned manner.

    摘要翻译: 制造半导体器件的方法,其中在位于半导体本体(1)的表面(3)的单晶硅(4)的旁边的氧化硅(5)的区域上,形成非单晶辅助层( 8)。 辅助层分两步形成。 在第一步骤中,硅体在包含气态砷化合物的气氛中加热; 在第二步中,在包含气态硅化合物的气氛中代替所述砷化合物进行加热。 因此,氧化硅区域以自对准的方式设置有非晶或多晶硅籽晶层。

    Method to reduce seedlayer topography in BICMOS process
    22.
    发明授权
    Method to reduce seedlayer topography in BICMOS process 有权
    减少BICMOS过程中种子层形貌的方法

    公开(公告)号:US07566919B2

    公开(公告)日:2009-07-28

    申请号:US10581639

    申请日:2004-12-09

    IPC分类号: H01L21/20

    摘要: A method for forming an epitaxial base layer in a bipolar device. The method comprises the steps of: providing a structure having a field isolation oxide region (12) adjacent to an active silicon region (10); forming a silicon nitride/silicon stack (14, 16) above the field isolation oxide region (12), wherein the silicon nitride/silicon stack (14, 16) includes a top layer of silicon (14) and a bottom layer of silicon nitride (16); performing an etch to the silicon nitride/silicon stack (14, 16) to form a stepped seed layer, wherein the top layer of silicon is etched laterally at the same time the bottom layer of silicon nitride is etched; and growing an Si/SiGe/Si stack (20) over the stepped seed layer and active region (10).

    摘要翻译: 一种在双极器件中形成外延基底层的方法。 该方法包括以下步骤:提供具有与有源硅区域(10)相邻的场隔离氧化物区域(12)的结构; 在所述场隔离氧化物区域(12)上形成氮化硅/硅堆叠(14,16),其中所述氮化硅/硅堆叠(14,16)包括硅顶层(14)和底层氮化硅 (16); 对所述氮化硅/硅堆叠(14,16)进行蚀刻以形成阶梯式种子层,其中在蚀刻所述底层氮化硅的同时侧向蚀刻所述硅顶层; 以及在所述阶梯式种子层和有源区域(10)上生长Si / SiGe / Si堆叠(20)。