RELAXED SiGe LAYERS ON Si OR SILICON-ON-INSULATOR SUBSTRATES BY ION IMPLANTATION AND THERMAL ANNEALING
    3.
    发明申请
    RELAXED SiGe LAYERS ON Si OR SILICON-ON-INSULATOR SUBSTRATES BY ION IMPLANTATION AND THERMAL ANNEALING 审中-公开
    通过离子植入和热退火在Si或硅绝缘体衬底上放置SiGe层

    公开(公告)号:WO2004047150A3

    公开(公告)日:2004-06-24

    申请号:PCT/US0336969

    申请日:2003-11-19

    Abstract: A method to obtain thin (less than 300 nm) strain-relaxed Si1-xGex buffer layers on Si or silicon-on-insulator (SOI) substrates. These buffer layers have a homogeneous distribution of misfit dislocations that relieve the strain, remarkably smooth surfaces, and a low threading dislocation (TD) density, i.e. less than 10 cm . The approach begins with the growth of a pseudomorphic or nearlypseudomorphic Si1-xGex layer, i.e., a layer that is free of misfit dislocations, which is then implanted with He or other light elements and subsequently annealed to achieve the substantial strain relaxation. The very effective strain relaxation mechanism operatiing with this method is dislocation nucleation at He-inducedplatelets (not bubbles) that lie below the Si/Si1-xGex interface, parallel to the Si(001) surface.

    Abstract translation: 在Si或绝缘体上硅(SOI)衬底上获得薄(小于300nm)应变弛豫Si1-xGex缓冲层的方法。 这些缓冲层具有失配位错的均匀分布,其缓解了应变,表面光滑平滑,以及低穿透位错(TD)密度,即小于10 6 cm 2。 该方法开始于伪晶体或近似假晶Si1-xGex层的生长,即,不具有失配位错的层,然后将其注入He或其它轻元素,随后退火以实现实质的应变弛豫。 用这种方法操作的非常有效的应变松弛机理是位于Si(001)表面Si / Si1-xGex界面以下的He诱导的电镀层(不是气泡)的位错成核。

    Relaxed sige layers on si or silicon-on-insulator substrates by ion implantation and thermal annealing

    公开(公告)号:AU2003295647A8

    公开(公告)日:2004-06-15

    申请号:AU2003295647

    申请日:2003-11-19

    Applicant: IBM

    Abstract: A method to obtain thin (less than 300 nm) strain-relaxed Si1-xGex buffer layers on Si or silicon-on-insulator (SOI) substrates. These buffer layers have a homogeneous distribution of misfit dislocations that relieve the strain, remarkably smooth surfaces, and a low threading dislocation (TD) density, i.e. less than 10 cm . The approach begins with the growth of a pseudomorphic or nearly pseudomorphic Si1-xGex layer, i.e., a layer that is free of misfit dislocations, which is then implanted with He or other light elements and subsequently annealed to achieve the substantial strain relaxation. The very effective strain relaxation mechanism operating with this method is dislocation nucleation at He-induced platelets (not bubbles) that lie below the Si/Si1-xGex interface, parallel to the Si(001) surface.

    RELAXED SiGe LAYERS ON Si OR SILICON-ON-INSULATOR SUBSTRATES BY ION IMPLANTATION AND THERMAL ANNEALING

    公开(公告)号:AU2003295647A1

    公开(公告)日:2004-06-15

    申请号:AU2003295647

    申请日:2003-11-19

    Applicant: IBM

    Abstract: A method to obtain thin (less than 300 nm) strain-relaxed Si1-xGex buffer layers on Si or silicon-on-insulator (SOI) substrates. These buffer layers have a homogeneous distribution of misfit dislocations that relieve the strain, remarkably smooth surfaces, and a low threading dislocation (TD) density, i.e. less than 10 cm . The approach begins with the growth of a pseudomorphic or nearly pseudomorphic Si1-xGex layer, i.e., a layer that is free of misfit dislocations, which is then implanted with He or other light elements and subsequently annealed to achieve the substantial strain relaxation. The very effective strain relaxation mechanism operating with this method is dislocation nucleation at He-induced platelets (not bubbles) that lie below the Si/Si1-xGex interface, parallel to the Si(001) surface.

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