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    Relaxed silicon germanium substrate with low defect density
    1.
    发明授权
    Relaxed silicon germanium substrate with low defect density 有权
    具有低缺陷密度的松弛硅锗衬底

    公开(公告)号：US06878610B1

    公开(公告)日：2005-04-12

    申请号：US10228545

    申请日：2002-08-27

    申请人： Chun Chich Lin ,  Yee-Chia Yeo ,  Chien-Chao Huang ,  Chao-Hsiung Wang ,  Tien-Chih Chang ,  Chenming Hu ,  Fu-Liang Yang ,  Shih-Chang Chen ,  Mong-Song Liang ,  Liang-Gi Yao

    发明人： Chun Chich Lin ,  Yee-Chia Yeo ,  Chien-Chao Huang ,  Chao-Hsiung Wang ,  Tien-Chih Chang ,  Chenming Hu ,  Fu-Liang Yang ,  Shih-Chang Chen ,  Mong-Song Liang ,  Liang-Gi Yao

    IPC分类号： C30B1/00 ,  H01L21/00 ,  H01L21/20 ,  H01L21/205 ,  H01L21/324 ,  H01L21/36 ,  H01L21/84 ,  H01L29/10

    CPC分类号： H01L29/1054 ,  H01L21/02381 ,  H01L21/0245 ,  H01L21/02505 ,  H01L21/02532 ,  H01L21/324

    摘要： A method of forming a strained silicon layer on a relaxed, low defect density semiconductor alloy layer such as SiGe, has been developed. In a first embodiment of this invention the relaxed, low density SiGe layer is epitaxially grown on an silicon layer which in turn is located on an underlying SiGe layer. During the epitaxial growth of the overlying SiGe layer defects are formed in the underlying silicon layer resulting in the desired, relaxation, and decreased defect density for the SiGe layer. A second embodiment features an anneal procedure performed during growth of the relaxed SiGe layer, resulting in additional relaxation and decreased defect density, while a third embodiment features an anneal procedure performed to the underlying silicon layer prior to epitaxial growth of the relaxed SiGe layer, again allowing optimized relaxation and defect density to be realized for the SiGe layer. The ability to obtain a strained silicon layer on a relaxed, low defect density SiGe layer, allows devices with enhanced carrier mobility to be formed in the surface of the strained silicon layer, with decreased risk of leakage due the presence of the underlying, relaxed, low defect density SiGe layer.

    摘要翻译： 已经开发了在松弛的低缺陷密度半导体合金层如SiGe上形成应变硅层的方法。 在本发明的第一实施例中，松散的低密度SiGe层在硅层上外延生长，硅层又位于下面的SiGe层上。 在覆盖SiGe层的外延生长期间，在下层硅层中形成缺陷，导致SiGe层所需的，松弛的和降低的缺陷密度。 第二个实施例的特征在于在松弛的SiGe层的生长期间执行的退火程序，导致附加的松弛和降低的缺陷密度，而第三实施例的特征在于在弛豫的SiGe层的外延生长之前对下面的硅层进行退火处理 允许为SiGe层实现优化的弛豫和缺陷密度。 在松弛的低缺陷密度SiGe层上获得应变硅层的能力允许在应变硅层的表面形成具有增强的载流子迁移率的器件，由于存在下面的，放松的， 低缺陷密度SiGe层。

    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement
    6.
    发明授权
    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement 有权
    应变平衡结构具有拉伸应变硅通道和压缩应变硅 - 锗通道，用于CMOS性能提升

    公开(公告)号：US06955952B2

    公开(公告)日：2005-10-18

    申请号：US10383709

    申请日：2003-03-07

    申请人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    发明人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    IPC分类号： H01L21/00 ,  H01L21/84 ,  H01L27/12 ,  H01L31/109

    CPC分类号： H01L29/1054 ,  H01L21/84 ,  H01L27/1203

    摘要： A method of fabricating a CMOS device wherein mobility enhancement of both the NMOS and PMOS elements is realized via strain induced band structure modification, has been developed. The NMOS element is formed featuring a silicon channel region under biaxial strain while the PMOS element is simultaneously formed featuring a SiGe channel region under biaxial compressive strain. A novel process sequence allowing formation of a thicker silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer which is under biaxial tensile stain enhancing electron mobility. The same novel process sequence results in the presence of a thinner silicon layer, overlying the same SiGe layer in the PMOS region, allowing the PMOS channel region to exist in the biaxial compressively strained SiGe layer, resulting in hole mobility enhancement.

    摘要翻译： 已经开发了通过应变诱导带结构修改来实现NMOS和PMOS元件的迁移率增强的CMOS器件的制造方法。 NMOS元件形成为具有双轴应变下的硅沟道区，同时形成在双轴压缩应变下具有SiGe沟道区的PMOS元件。 允许形成覆盖SiGe层的较厚硅层的新颖工艺顺序允许NMOS沟道区存在于双轴拉伸污染增强电子迁移率的硅层中。 相同的新工艺序列导致存在较薄的硅层，覆盖PMOS区域中相同的SiGe层，允许PMOS沟道区存在于双轴压缩应变SiGe层中，导致空穴迁移率增强。

    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement
    7.
    发明授权
    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement 有权
    应变平衡结构具有拉伸应变硅通道和压缩应变硅 - 锗通道，用于CMOS性能提升

    公开(公告)号：US07238989B2

    公开(公告)日：2007-07-03

    申请号：US11201990

    申请日：2005-08-11

    申请人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    发明人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    IPC分类号： H01L27/01

    CPC分类号： H01L29/1054 ,  H01L21/84 ,  H01L27/1203

    摘要： A method of fabricating a CMOS device wherein mobility enhancement of both the NMOS and PMOS elements is realized via strain induced band structure modification, has been developed. The NMOS element is formed featuring a silicon channel region under biaxial strain while the PMOS element is simultaneously formed featuring a SiGe channel region under biaxial compressive strain. A novel process sequence allowing formation of a thicker silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer which is under biaxial tensile strain enhancing electron mobility. The same novel process sequence results in the presence of a thinner silicon layer, overlying the same SiGe layer in the PMOS region, allowing the PMOS channel region to exist in the biaxial compressively strained SiGe layer, resulting in hole mobility enhancement.

    摘要翻译： 已经开发了通过应变诱导带结构修改来实现NMOS和PMOS元件的迁移率增强的CMOS器件的制造方法。 NMOS元件形成为具有双轴应变下的硅沟道区，同时形成在双轴压缩应变下具有SiGe沟道区的PMOS元件。 允许形成覆盖SiGe层的较厚硅层的新颖工艺顺序允许NMOS沟道区存在于覆盖SiGe层的硅层中，允许NMOS沟道区存在于双层拉伸应变增强下的硅层中 电子迁移率。 相同的新工艺序列导致存在较薄的硅层，覆盖PMOS区域中相同的SiGe层，允许PMOS沟道区存在于双轴压缩应变SiGe层中，导致空穴迁移率增强。

    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement
    8.
    发明申请
    Strain balanced structure with a tensile strained silicon channel and a compressive strained silicon-germanium channel for CMOS performance enhancement 有权
    应变平衡结构具有拉伸应变硅通道和压缩应变硅 - 锗通道，用于CMOS性能提升

    公开(公告)号：US20050272188A1

    公开(公告)日：2005-12-08

    申请号：US11201990

    申请日：2005-08-11

    申请人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    发明人： Yee-Chia Yeo ,  Chun-Chieh Lin ,  Fu-Liang Yang ,  Mong-Song Liang ,  Chenming Hu

    IPC分类号： H01L21/00 ,  H01L21/84 ,  H01L27/12 ,  H01L31/109

    CPC分类号： H01L29/1054 ,  H01L21/84 ,  H01L27/1203

    摘要： A method of fabricating a CMOS device wherein mobility enhancement of both the NMOS and PMOS elements is realized via strain induced band structure modification, has been developed. The NMOS element is formed featuring a silicon channel region under biaxial strain while the PMOS element is simultaneously formed featuring a SiGe channel region under biaxial compressive strain. A novel process sequence allowing formation of a thicker silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer overlying a SiGe layer, allows the NMOS channel region to exist in the silicon layer which is under biaxial tensile strain enhancing electron mobility. The same novel process sequence results in the presence of a thinner silicon layer, overlying the same SiGe layer in the PMOS region, allowing the PMOS channel region to exist in the biaxial compressively strained SiGe layer, resulting in hole mobility enhancement.

    摘要翻译： 已经开发了通过应变诱导带结构修改来实现NMOS和PMOS元件的迁移率增强的CMOS器件的制造方法。 NMOS元件形成为具有双轴应变下的硅沟道区，同时形成在双轴压缩应变下具有SiGe沟道区的PMOS元件。 允许形成覆盖SiGe层的较厚硅层的新颖工艺顺序允许NMOS沟道区存在于覆盖SiGe层的硅层中，允许NMOS沟道区存在于双层拉伸应变增强下的硅层中 电子迁移率。 相同的新工艺序列导致存在较薄的硅层，覆盖PMOS区域中相同的SiGe层，允许PMOS沟道区存在于双轴压缩应变SiGe层中，导致空穴迁移率增强。