公开(公告)号：US20070099361A1

公开(公告)日：2007-05-03

申请号：US11263119

申请日：2005-10-31

申请人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Da Zhang

发明人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Da Zhang

IPC分类号： H01L21/8234 ,  H01L21/336

CPC分类号： H01L21/823807 ,  H01L21/823821 ,  H01L21/82385 ,  H01L21/845 ,  H01L27/1211 ,  H01L29/7842 ,  H01L29/785

摘要： Forming a semiconductor structure includes providing a substrate having a strained semiconductor layer overlying an insulating layer, providing a first device region for forming a first plurality of devices having a first conductivity type, providing a second device region for forming a second plurality of devices having a second conductivity type, and thickening the strained semiconductor layer in the second device region so that the strained semiconductor layer in the second device region has less strain that the strained semiconductor layer in the first device region. Alternatively, forming a semiconductor structure includes providing a first region having a first conductivity type, forming an insulating layer overlying at least an active area of the first region, anisotropically etching the insulating layer, and after anisotropically etching the insulating layer, deposing a gate electrode material overlying at least a portion of the insulating layer.

公开(公告)号：US20070099353A1

公开(公告)日：2007-05-03

申请号：US11263120

申请日：2005-10-31

申请人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Da Zhang

发明人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Da Zhang

IPC分类号： H01L21/84

CPC分类号： H01L21/845 ,  H01L27/1211 ,  H01L29/7842 ,  H01L29/785 ,  Y10S438/938

摘要： Forming a semiconductor structure includes providing a substrate having a strained semiconductor layer overlying an insulating layer, providing a first device region for forming a first plurality of devices having a first conductivity type, providing a second device region for forming a second plurality of devices having a second conductivity type, and thickening the strained semiconductor layer in the second device region so that the strained semiconductor layer in the second device region has less strain that the strained semiconductor layer in the first device region. Alternatively, forming a semiconductor structure includes providing a first region having a first conductivity type, forming an insulating layer overlying at least an active area of the first region, anisotropically etching the insulating layer, and after anisotropically etching the insulating layer, deposing a gate electrode material overlying at least a portion of the insulating layer.

摘要翻译： 形成半导体结构包括提供具有覆盖在绝缘层上的应变半导体层的衬底，提供用于形成具有第一导电类型的第一多个器件的第一器件区域，提供第二器件区域，用于形成具有第 第二导电类型，并且使第二器件区域中的应变半导体层变厚，使得第二器件区域中的应变半导体层具有较小的第一器件区域中的应变半导体层的应变。 或者，形成半导体结构包括提供具有第一导电类型的第一区域，形成覆盖第一区域的至少有源区域的绝缘层，各向异性地蚀刻绝缘层，以及在各向异性蚀刻绝缘层之后， 覆盖绝缘层的至少一部分的材料。

公开(公告)号：US20060068553A1

公开(公告)日：2006-03-30

申请号：US10954121

申请日：2004-09-29

申请人： Voon-Yew Thean ,  Mariam Sadaka ,  Ted White ,  Alexander Barr ,  Venkat Kolagunta ,  Bich-Yen Nguyen ,  Victor Vartanian ,  Da Zhang

发明人： Voon-Yew Thean ,  Mariam Sadaka ,  Ted White ,  Alexander Barr ,  Venkat Kolagunta ,  Bich-Yen Nguyen ,  Victor Vartanian ,  Da Zhang

IPC分类号： H01L21/336

CPC分类号： H01L21/2254 ,  H01L29/665 ,  H01L29/66787 ,  H01L29/7848 ,  H01L29/785 ,  H01L29/78648

摘要： A semiconductor device (10) is formed by positioning a gate (22) overlying a semiconductor layer (16) of preferably silicon. A semiconductor material (26) of, for example only, SiGe or Ge, is formed adjacent the gate over the semiconductor layer and over source/drain regions. A thermal process diffuses the stressor material into the semiconductor layer. Lateral diffusion occurs to cause the formation of a strained channel (17) in which a stressor material layer (30) is immediately adjacent the strained channel. Extension implants create source and drain implants from a first portion of the stressor material layer. A second portion of the stressor material layer remains in the channel between the strained channel and the source and drain implants. A heterojunction is therefore formed in the strained channel. In another form, oxidation of the stressor material occurs rather than extension implants to form the strained channel.

摘要翻译： 半导体器件（10）通过将覆盖在优选硅的半导体层（16）上的栅极（22）定位而形成。 例如仅SiGe或Ge的半导体材料（26）形成在半导体层上方的栅极和源极/漏极区域附近。 热处理将应力源材料扩散到半导体层。 发生横向扩散以形成应变通道（17），其中应力材料层（30）紧邻应变通道。 延伸植入物从应力源材料层的第一部分产生源和漏植入物。 应力源材料层的第二部分保留在应变通道和源极和漏极植入物之间的通道中。 因此，在应变通道中形成异质结。 在另一种形式中，发生应力源材料的氧化而不是延伸植入物以形成应变通道。

公开(公告)号：US20060030093A1

公开(公告)日：2006-02-09

申请号：US10913099

申请日：2004-08-06

申请人： Da Zhang ,  Brian Goolsby ,  Eric Luckowski ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Voon-Yew Thean ,  Ted White

发明人： Da Zhang ,  Brian Goolsby ,  Eric Luckowski ,  Bich-Yen Nguyen ,  Mariam Sadaka ,  Voon-Yew Thean ,  Ted White

IPC分类号： H01L21/8234

CPC分类号： H01L29/7842 ,  H01L29/165 ,  H01L29/665 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/66651 ,  H01L29/66742 ,  H01L29/7834 ,  H01L29/7848 ,  H01L29/78687

摘要： A method for forming at least a portion of a semiconductor device includes providing a substrate and epitaxially forming an etch stop layer over the substrate. A first layer is provided over the etch stop layer, wherein the first layer is selectively etchable with regard to the etch stop layer. A structure is provided over a region of the first layer, wherein the region is not all of the first layer. In addition, the method includes etching at least a portion of the first layer that is outside of the region, wherein the etch stop layer is used an as etch stop. A strained layer is epitaxially grown in the etch-recessed region.

摘要翻译： 用于形成半导体器件的至少一部分的方法包括提供衬底并在衬底上外延地形成蚀刻停止层。 第一层设置在蚀刻停止层上方，其中第一层相对于蚀刻停止层可选择性地蚀刻。 在第一层的区域上提供结构，其中该区域不是全部第一层。 此外，该方法包括蚀刻位于该区域之外的第一层的至少一部分，其中蚀刻停止层用作蚀刻停止。 在蚀刻凹陷区域中外延生长应变层。

公开(公告)号：US20060065927A1

公开(公告)日：2006-03-30

申请号：US10952676

申请日：2004-09-29

申请人： Voon-Yew Thean ,  Mariam Sadaka ,  Ted White ,  Alexander Barr ,  Venkat Kolagunta ,  Bich-Yen Nguyen ,  Victor Vartanian ,  Da Zhang

发明人： Voon-Yew Thean ,  Mariam Sadaka ,  Ted White ,  Alexander Barr ,  Venkat Kolagunta ,  Bich-Yen Nguyen ,  Victor Vartanian ,  Da Zhang

IPC分类号： H01L29/06

CPC分类号： H01L29/785 ,  H01L29/42392 ,  H01L29/66628 ,  H01L29/66742 ,  H01L29/7842 ,  H01L29/78621 ,  H01L29/78648 ,  H01L29/78687

摘要： A semiconductor device (10) is formed by positioning a gate (22) overlying a semiconductor layer (16) of preferably silicon. A semiconductor material (26) of, for example only, SiGe or Ge, is formed adjacent the gate over the semiconductor layer and over source/drain regions. A thermal process diffuses the stressor material into the semiconductor layer. Lateral diffusion occurs to cause the formation of a strained channel (17) in which a stressor material layer (30) is immediately adjacent the strained channel. Extension implants create source and drain implants from a first portion of the stressor material layer. A second portion of the stressor material layer remains in the channel between the strained channel and the source and drain implants. A heterojunction is therefore formed in the strained channel. In another form, oxidation of the stressor material occurs rather than extension implants to form the strained channel.

摘要翻译： 半导体器件（10）通过将覆盖在优选硅的半导体层（16）上的栅极（22）定位而形成。 例如仅SiGe或Ge的半导体材料（26）形成在半导体层上方的栅极和源极/漏极区域附近。 热处理将应力源材料扩散到半导体层。 发生横向扩散以形成应变通道（17），其中应力材料层（30）紧邻应变通道。 延伸植入物从应力源材料层的第一部分产生源和漏植入物。 应力源材料层的第二部分保留在应变通道和源极和漏极植入物之间的通道中。 因此，在应变通道中形成异质结。 在另一种形式中，发生应力源材料的氧化而不是延伸植入物以形成应变通道。

公开(公告)号：US07575975B2

公开(公告)日：2009-08-18

申请号：US11263120

申请日：2005-10-31

申请人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Da Zhang

发明人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Da Zhang

IPC分类号： H01L21/00 ,  H01L21/84 ,  H01L21/8234 ,  H01L27/088

CPC分类号： H01L21/845 ,  H01L27/1211 ,  H01L29/7842 ,  H01L29/785 ,  Y10S438/938

摘要： Forming a semiconductor structure includes providing a substrate having a strained semiconductor layer overlying an insulating layer, providing a first device region for forming a first plurality of devices having a first conductivity type, providing a second device region for forming a second plurality of devices having a second conductivity type, and thickening the strained semiconductor layer in the second device region so that the strained semiconductor layer in the second device region has less strain that the strained semiconductor layer in the first device region. Alternatively, forming a semiconductor structure includes providing a first region having a first conductivity type, forming an insulating layer overlying at least an active area of the first region, anisotropically etching the insulating layer, and after anisotropically etching the insulating layer, deposing a gate electrode material overlying at least a portion of the insulating layer.

摘要翻译： 形成半导体结构包括提供具有覆盖在绝缘层上的应变半导体层的衬底，提供用于形成具有第一导电类型的第一多个器件的第一器件区域，提供第二器件区域，用于形成具有第 第二导电类型，并且使第二器件区域中的应变半导体层变厚，使得第二器件区域中的应变半导体层具有较小的第一器件区域中的应变半导体层的应变。 或者，形成半导体结构包括提供具有第一导电类型的第一区域，形成覆盖第一区域的至少有源区域的绝缘层，各向异性地蚀刻绝缘层，以及在各向异性蚀刻绝缘层之后， 覆盖绝缘层的至少一部分的材料。

公开(公告)号：US07615806B2

公开(公告)日：2009-11-10

申请号：US11263119

申请日：2005-10-31

申请人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Da Zhang

发明人： Voon-Yew Thean ,  Jian Chen ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Da Zhang

IPC分类号： H01L27/10

CPC分类号： H01L21/823807 ,  H01L21/823821 ,  H01L21/82385 ,  H01L21/845 ,  H01L27/1211 ,  H01L29/7842 ,  H01L29/785

摘要： Forming a semiconductor structure includes providing a substrate having a strained semiconductor layer overlying an insulating layer, providing a first device region for forming a first plurality of devices having a first conductivity type, providing a second device region for forming a second plurality of devices having a second conductivity type, and thickening the strained semiconductor layer in the second device region so that the strained semiconductor layer in the second device region has less strain that the strained semiconductor layer in the first device region. Alternatively, forming a semiconductor structure includes providing a first region having a first conductivity type, forming an insulating layer overlying at least an active area of the first region, anisotropically etching the insulating layer, and after anisotropically etching the insulating layer, deposing a gate electrode material overlying at least a portion of the insulating layer.

摘要翻译： 形成半导体结构包括提供具有覆盖在绝缘层上的应变半导体层的衬底，提供用于形成具有第一导电类型的第一多个器件的第一器件区域，提供第二器件区域，用于形成具有第 第二导电类型，并且使第二器件区域中的应变半导体层变厚，使得第二器件区域中的应变半导体层具有较小的第一器件区域中的应变半导体层的应变。 或者，形成半导体结构包括提供具有第一导电类型的第一区域，形成覆盖第一区域的至少有源区域的绝缘层，各向异性地蚀刻绝缘层，以及在各向异性蚀刻绝缘层之后， 覆盖绝缘层的至少一部分的材料。

公开(公告)号：US20060228863A1

公开(公告)日：2006-10-12

申请号：US11092291

申请日：2005-03-29

申请人： Da Zhang ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Yasuhito Shiho ,  Veer Dhandapani

发明人： Da Zhang ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Yasuhito Shiho ,  Veer Dhandapani

IPC分类号： H01L21/336

CPC分类号： H01L29/7848 ,  H01L29/165 ,  H01L29/66545 ,  H01L29/66628 ,  H01L29/66636

摘要： A semiconductor device with strain enhancement is formed by providing a semiconductor substrate and an overlying control electrode having a sidewall. An insulating layer is formed adjacent the sidewall of the control electrode. The semiconductor substrate and the control electrode are implanted to form first and second doped current electrode regions, a portion of each of the first and second doped current electrode regions being driven to underlie both the insulating layer and the control electrode in a channel region of the semiconductor device. The first and second doped current electrode regions are removed from the semiconductor substrate except for underneath the control electrode and the insulating layer to respectively form first and second trenches. An insitu doped material containing a different lattice constant relative to the semiconductor substrate is formed within the first and second trenches to function as first and second current electrodes of the semiconductor device.

摘要翻译： 通过提供半导体衬底和具有侧壁的上覆控制电极来形成具有应变增强的半导体器件。 在控制电极的侧壁附近形成绝缘层。 注入半导体衬底和控制电极以形成第一和第二掺杂电流电极区域，第一和第二掺杂电流电极区域中的每一个的一部分被驱动以在第一和第二掺杂电流电极区域的沟道区域中的绝缘层和控制电极之下 半导体器件。 第一和第二掺杂电流电极区域除了在控制电极和绝缘层之下除去分别形成第一和第二沟槽的半导体衬底外。 在第一沟槽和第二沟槽内形成含有相对于半导体衬底的不同晶格常数的原位掺杂材料，用作半导体器件的第一和第二电流电极。

公开(公告)号：US20060228842A1

公开(公告)日：2006-10-12

申请号：US11101354

申请日：2005-04-07

申请人： Da Zhang ,  Jing Liu ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Ted White

发明人： Da Zhang ,  Jing Liu ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Ted White

IPC分类号： H01L21/338 ,  H01L21/20

CPC分类号： H01L29/7848 ,  H01L29/165 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/66636

摘要： A semiconductor fabrication process includes forming a gate electrode (120) overlying a gate dielectric (110) overlying a semiconductor substrate (102). First spacers (124) are formed on sidewalls of the gate electrode (120). First s/d trenches (130) are formed in the substrate (102) using the gate electrode (120) and first spacers (124) as a mask. The first s/d trenches (130) are filled with a first s/d structure (132). Second spacers (140) are formed on the gate electrode (120) sidewalls adjacent the first spacers (124). Second s/d trenches (150) are formed in the substrate (102) using the gate electrode (120) and the second spacers (140) as a mask. The second s/d trenches (150) are filled with a second s/d structure (152). Filling the first and second s/d trenches (130, 150) preferably includes growing the s/d structures using an epitaxial process. The s/d structures (132, 152) may be stress inducing structures such as silicon germanium for PMOS transistors and silicon carbon for NMOS transistors.

摘要翻译： 半导体制造工艺包括形成覆盖在半导体衬底（102）上的栅电介质（110）上的栅电极（120）。 第一间隔物（124）形成在栅电极（120）的侧壁上。 使用栅电极（120）和第一间隔物（124）作为掩模，在基板（102）中形成第一s / d沟槽（130）。 第一s / d沟槽（130）填充有第一s / d结构（132）。 第二间隔物（140）形成在邻近第一间隔物（124）的栅电极（120）侧壁上。 使用栅电极（120）和第二间隔物（140）作为掩模，在衬底（102）中形成第二s / d沟槽（150）。 第二s / d沟槽（150）填充有第二s / d结构（152）。 填充第一和第二s / d沟槽（130,150）优选地包括使用外延工艺来生长s / d结构。 s / d结构（132,152）可以是应力诱导结构，例如用于PMOS晶体管的硅锗和用于NMOS晶体管的硅碳。

公开(公告)号：US07226820B2

公开(公告)日：2007-06-05

申请号：US11101354

申请日：2005-04-07

申请人： Da Zhang ,  Jing Liu ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Ted R. White

发明人： Da Zhang ,  Jing Liu ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Ted R. White

IPC分类号： H01L21/00

CPC分类号： H01L29/7848 ,  H01L29/165 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/66636

摘要： A semiconductor fabrication process includes forming a gate electrode (120) overlying a gate dielectric (110) overlying a semiconductor substrate (102). First spacers (124) are formed on sidewalls of the gate electrode (120). First s/d trenches (130) are formed in the substrate (102) using the gate electrode (120) and first spacers (124) as a mask. The first s/d trenches (130) are filled with a first s/d structure (132). Second spacers (140) are formed on the gate electrode (120) sidewalls adjacent the first spacers (124). Second s/d trenches (150) are formed in the substrate (102) using the gate electrode (120) and the second spacers (140) as a mask. The second s/d trenches (150) are filled with a second s/d structure (152). Filling the first and second s/d trenches (130, 150) preferably includes growing the s/d structures using an epitaxial process. The s/d structures (132, 152) may be stress inducing structures such as silicon germanium for PMOS transistors and silicon carbon for NMOS transistors.

摘要翻译： 半导体制造工艺包括形成覆盖在半导体衬底（102）上的栅电介质（110）上的栅电极（120）。 第一间隔物（124）形成在栅电极（120）的侧壁上。 使用栅电极（120）和第一间隔物（124）作为掩模，在基板（102）中形成第一s / d沟槽（130）。 第一s / d沟槽（130）填充有第一s / d结构（132）。 第二间隔物（140）形成在邻近第一间隔物（124）的栅电极（120）侧壁上。 使用栅电极（120）和第二间隔物（140）作为掩模，在衬底（102）中形成第二s / d沟槽（150）。 第二s / d沟槽（150）填充有第二s / d结构（152）。 填充第一和第二s / d沟槽（130,150）优选地包括使用外延工艺来生长s / d结构。 s / d结构（132,152）可以是应力诱导结构，例如用于PMOS晶体管的硅锗和用于NMOS晶体管的硅碳。