公开(公告)号：US08159031B2

公开(公告)日：2012-04-17

申请号：US12709873

申请日：2010-02-22

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

IPC分类号： H01L27/12

CPC分类号： H01L29/0653 ,  H01L21/76243 ,  H01L21/76267 ,  H01L21/76283 ,  H01L21/823481 ,  H01L21/823878 ,  H01L21/84 ,  H01L27/1203

摘要： An improved semiconductor-on-insulator (SOI) substrate is provided, which contains a patterned buried insulator layer at varying depths. Specifically, the SOI substrate has a substantially planar upper surface and comprises: (1) first regions that do not contain any buried insulator, (2) second regions that contain first portions of the patterned buried insulator layer at a first depth (i.e., measured from the planar upper surface of the SOI substrate), and (3) third regions that contain second portions of the patterned buried insulator layer at a second depth, where the first depth is larger than the second depth. One or more field effect transistors (FETs) can be formed in the SOI substrate. For example, the FETs may comprise: channel regions in the first regions of the SOI substrate, source and drain regions in the second regions of the SOI substrate, and source/drain extension regions in the third regions of the SOI substrate.

摘要翻译： 提供了一种改进的绝缘体上半导体（SOI）衬底，其包含在不同深度处的图案化掩埋绝缘体层。 具体而言，SOI衬底具有基本平坦的上表面，并且包括：（1）不包含任何埋入绝缘体的第一区域，（2）第一区域，其包含第一深度处的图案化掩埋绝缘体层的第一部分 从SOI衬底的平坦的上表面），和（3）第二深度大于第二深度的第二深度上包含图案化的掩埋绝缘体层的第二部分的第三区域。 可以在SOI衬底中形成一个或多个场效应晶体管（FET）。 例如，FET可以包括：SOI衬底的第一区域中的沟道区域，SOI衬底的第二区域中的源极和漏极区域以及SOI衬底的第三区域中的源极/漏极延伸区域。

公开(公告)号：US07750429B2

公开(公告)日：2010-07-06

申请号：US11748521

申请日：2007-05-15

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

IPC分类号： H01L29/78

CPC分类号： H01L21/76229 ,  H01L21/3086 ,  H01L21/823878

摘要： A pedestal is formed out of the pad layer such that two edges of the pedestal coincide with a border of the wells as implanted. An extended pedestal is formed over the pedestal by depositing a conformal dielectric layer. The area of the extended pedestal is exposed the semiconductor surface below is recessed to a recess depth. Other trenches including at least one intra-well isolation trench are lithographically patterned. After a reactive ion etch, both an inter-well isolation trench and at least one intra-well isolation trench are formed. The width of the inter-well isolation trench may be reduced due to the deeper bottom surface compared to the prior art structures. The boundary between the p-well and the n-well below the inter-well isolation structure is self-aligned to the middle of the inter-well isolation structure.

摘要翻译： 从衬垫层形成基座，使得底座的两个边缘与植入的孔的边界重合。 通过沉积保形介电层在基座上形成延伸基座。 扩展基座的面积暴露在下方的半导体表面凹陷到凹陷深度。 包括至少一个井内隔离沟槽的其它沟槽被光刻图案化。 在反应离子蚀刻之后，形成阱间隔离沟槽和至少一个阱间隔离沟槽。 与现有技术的结构相比，由于较深的底面，间隙隔离沟槽的宽度可能会降低。 在井间隔离结构下面的p阱和n阱之间的边界与井间隔离结构的中间自对准。

公开(公告)号：US20100148259A1

公开(公告)日：2010-06-17

申请号：US12709873

申请日：2010-02-22

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

IPC分类号： H01L27/12 ,  H01L29/78

CPC分类号： H01L29/0653 ,  H01L21/76243 ,  H01L21/76267 ,  H01L21/76283 ,  H01L21/823481 ,  H01L21/823878 ,  H01L21/84 ,  H01L27/1203

摘要： An improved semiconductor-on-insulator (SOI) substrate is provided, which contains a patterned buried insulator layer at varying depths. Specifically, the SOI substrate has a substantially planar upper surface and comprises: (1) first regions that do not contain any buried insulator, (2) second regions that contain first portions of the patterned buried insulator layer at a first depth (i.e., measured from the planar upper surface of the SOI substrate), and (3) third regions that contain second portions of the patterned buried insulator layer at a second depth, where the first depth is larger than the second depth. One or more field effect transistors (FETs) can be formed in the SOI substrate. For example, the FETs may comprise: channel regions in the first regions of the SOI substrate, source and drain regions in the second regions of the SOI substrate, and source/drain extension regions in the third regions of the SOI substrate.

摘要翻译： 提供了一种改进的绝缘体上半导体（SOI）衬底，其包含在不同深度处的图案化掩埋绝缘体层。 具体而言，SOI衬底具有基本平坦的上表面，并且包括：（1）不包含任何埋入绝缘体的第一区域，（2）第一区域，其包含第一深度处的图案化掩埋绝缘体层的第一部分 从SOI衬底的平坦的上表面），和（3）第二深度大于第二深度的第二深度上包含图案化的掩埋绝缘体层的第二部分的第三区域。 可以在SOI衬底中形成一个或多个场效应晶体管（FET）。 例如，FET可以包括：SOI衬底的第一区域中的沟道区域，SOI衬底的第二区域中的源极和漏极区域以及SOI衬底的第三区域中的源极/漏极延伸区域。

公开(公告)号：US07666721B2

公开(公告)日：2010-02-23

申请号：US11308292

申请日：2006-03-15

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

IPC分类号： H01L21/00

CPC分类号： H01L29/0653 ,  H01L21/76243 ,  H01L21/76267 ,  H01L21/76283 ,  H01L21/823481 ,  H01L21/823878 ,  H01L21/84 ,  H01L27/1203

摘要： An improved semiconductor-on-insulator (SOI) substrate is provided, which contains a patterned buried insulator layer at varying depths. Specifically, the SOI substrate has a substantially planar upper surface and comprises: (1) first regions that do not contain any buried insulator, (2) second regions that contain first portions of the patterned buried insulator layer at a first depth (i.e., measured from the planar upper surface of the SOI substrate), and (3) third regions that contain second portions of the patterned buried insulator layer at a second depth, where the first depth is larger than the second depth. One or more field effect transistors (FETs) can be formed in the SOI substrate. For example, the FETs may comprise: channel regions in the first regions of the SOI substrate, source and drain regions in the second regions of the SOI substrate, and source/drain extension regions in the third regions of the SOI substrate.

摘要翻译： 提供了一种改进的绝缘体上半导体（SOI）衬底，其包含在不同深度处的图案化掩埋绝缘体层。 具体而言，SOI衬底具有基本平坦的上表面，并且包括：（1）不包含任何埋入绝缘体的第一区域，（2）第一区域，其包含第一深度处的图案化掩埋绝缘体层的第一部分 从SOI衬底的平坦的上表面），和（3）第二深度大于第二深度的第二深度上包含图案化的掩埋绝缘体层的第二部分的第三区域。 可以在SOI衬底中形成一个或多个场效应晶体管（FET）。 例如，FET可以包括：SOI衬底的第一区域中的沟道区域，SOI衬底的第二区域中的源极和漏极区域以及SOI衬底的第三区域中的源极/漏极延伸区域。

公开(公告)号：US20080283962A1

公开(公告)日：2008-11-20

申请号：US11748521

申请日：2007-05-15

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Haining S. Yang

IPC分类号： H01L29/00 ,  H01L21/762

CPC分类号： H01L21/76229 ,  H01L21/3086 ,  H01L21/823878

摘要： A pedestal is formed out of the pad layer such that two edges of the pedestal coincide with a border of the wells as implanted. An extended pedestal is formed over the pedestal by depositing a conformal dielectric layer. The area of the extended pedestal is exposed the semiconductor surface below is recessed to a recess depth. Other trenches including at least one intra-well isolation trench are lithographically patterned. After a reactive ion etch, both an inter-well isolation trench and at least one intra-well isolation trench are formed. The width of the inter-well isolation trench may be reduced due to the deeper bottom surface compared to the prior art structures. The boundary between the p-well and the n-well below the inter-well isolation structure is self-aligned to the middle of the inter-well isolation structure.

摘要翻译： 从衬垫层形成基座，使得底座的两个边缘与植入的孔的边界重合。 通过沉积保形介电层在基座上形成延伸基座。 扩展基座的面积暴露在下方的半导体表面凹陷到凹陷深度。 包括至少一个井内隔离沟槽的其它沟槽被光刻图案化。 在反应离子蚀刻之后，形成阱间隔离沟槽和至少一个阱间隔离沟槽。 与现有技术的结构相比，由于较深的底面，间隙隔离沟槽的宽度可能会降低。 在井间隔离结构下面的p阱和n阱之间的边界与井间隔离结构的中间自对准。

公开(公告)号：US20080023752A1

公开(公告)日：2008-01-31

申请号：US11460766

申请日：2006-07-28

申请人： Xiangdong Chen ,  Yung Fu Chong ,  Zhijiong Luo ,  Xinlin Wang ,  Haining S. Yang

发明人： Xiangdong Chen ,  Yung Fu Chong ,  Zhijiong Luo ,  Xinlin Wang ,  Haining S. Yang

IPC分类号： H01L29/76 ,  H01L21/336

CPC分类号： H01L21/26586 ,  H01L29/1045 ,  H01L29/165 ,  H01L29/665 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/66636

摘要： An n-type field effect transistor (NFET) and methods of forming a halo for an NFET to control the short channel effect are disclosed. One method includes forming a gate over a silicon substrate; recessing the silicon adjacent to the gate; forming a halo by epitaxially growing boron in-situ doped silicon germanium (SiGe) in the recess; and epitaxially growing silicon over the silicon germanium. Alternatively, the halo can be formed by ion implanting boron into an embedded SiGe region within the silicon substrate. The resulting NFET includes a boron doped SiGe halo embedded within the silicon substrate. The embedded SiGe layer may be a relaxed layer without inserting strain in the channel. The high solid solubility of boron in SiGe and low diffusion rate allows formation of a halo that will maintain the sharp profile, which provides better control of the short channel effect and increasing control over NFET threshold voltage roll-off.

摘要翻译： 公开了一种n型场效应晶体管（NFET）和用于形成用于NFET的光晕以控制短沟道效应的方法。 一种方法包括在硅衬底上形成栅极; 凹陷与栅极相邻的硅; 通过在凹槽中外延生长硼原位掺杂硅锗（SiGe）来形成卤素; 并在硅锗上外延生长硅。 或者，可以通过将硼离子注入到硅衬底内的嵌入的SiGe区域中来形成卤素。 所得NFET包括嵌入在硅衬底内的硼掺杂SiGe光晕。 嵌入的SiGe层可以是松弛层，而不会在通道中插入应变。 硼在SiGe中的高固体溶解度和低扩散速率允许形成将保持尖锐轮廓的光晕，这提供了对短通道效应的更好控制并增加了对NFET阈值电压滚降的控制。

公开(公告)号：US07884448B2

公开(公告)日：2011-02-08

申请号：US12500396

申请日：2009-07-09

申请人： Thomas W. Dyer ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Haining S. Yang

IPC分类号： H01L29/04

CPC分类号： H01L21/823807 ,  H01L21/823821 ,  H01L27/0922 ,  H01L27/1211 ,  H01L29/04 ,  H01L29/66795 ,  H01L29/7853

摘要： The present invention relates to high performance three-dimensional (3D) field effect transistors (FETs). Specifically, a 3D semiconductor structure having a bottom surface oriented along one of a first set of equivalent crystal planes and multiple additional surfaces oriented along a second, different set of equivalent crystal planes can be used to form a high performance 3D FET with carrier channels oriented along the second, different set of equivalent crystal planes. More importantly, such a 3D semiconductor structure can be readily formed over the same substrate with an additional 3D semiconductor structure having a bottom surface and multiple additional surfaces all oriented along the first set of equivalent crystal planes. The additional 3D semiconductor structure can be used to form an additional 3D FET, which is complementary to the above-described 3D FET and has carrier channels oriented along the first set of equivalent crystal planes.

摘要翻译： 本发明涉及高性能三维（3D）场效应晶体管（FET）。 具体而言，可以使用具有沿着第一组等效晶面中的一个取向的底表面和沿着第二不同组的等效晶面取向的多个附加表面的3D半导体结构，以形成具有载体通道定向的高性能3D FET 沿着第二个不同组的等效晶面。 更重要的是，这种3D半导体结构可以容易地在具有底表面和多个附加表面的附加3D半导体结构的同一衬底上形成，所述另外的三维半导体结构全部沿着第一组等效晶面取向。 附加的3D半导体结构可以用于形成附加的3D FET，其与上述3D FET互补，并且具有沿着第一组等效晶面取向的载流子通道。

公开(公告)号：US20090283829A1

公开(公告)日：2009-11-19

申请号：US12119515

申请日：2008-05-13

申请人： Thomas W. Dyer ,  Haining S. Yang

发明人： Thomas W. Dyer ,  Haining S. Yang

IPC分类号： H01L21/8238 ,  H01L27/092

CPC分类号： H01L29/785 ,  H01L29/045 ,  H01L29/66818

摘要： A fin-type field effect transistor (finFET) structure comprises a substrate having a planar upper surface, an elongated fin on the planar upper surface of the substrate (wherein the length and the height of the fin are greater that the width of the fin) and an elongated gate conductor on the planar upper surface of the substrate. The length and the height of the gate conductor are greater than the width of the gate conductor. The fin comprises a center section comprising a semiconducting channel region and end sections distal to the channel region. The end sections of the fin comprise conductive source and drain regions. The gate conductor covers the channel region of the fin. The sidewalls of the channel region comprise a different crystal orientation than the sidewalls of the source and drain regions.

摘要翻译： 鳍式场效应晶体管（finFET）结构包括具有平坦上表面的基板，在基板的平面上表面上的细长翅片（其中鳍的长度和高度大于翅片的宽度） 以及在基板的平面上表面上的细长栅极导体。 栅极导体的长度和高度大于栅极导体的宽度。 翅片包括中心部分，其包括半导体沟道区域和远离沟道区域的端部区段。 翅片的端部部分包括导电源极和漏极区域。 栅极导体覆盖鳍片的沟道区域。 沟道区的侧壁包括与源区和漏区的侧壁不同的晶体取向。

公开(公告)号：US20090256173A1

公开(公告)日：2009-10-15

申请号：US12103301

申请日：2008-04-15

申请人： Xiangdong Chen ,  Thomas W. Dyer ,  Haining S. Yang

发明人： Xiangdong Chen ,  Thomas W. Dyer ,  Haining S. Yang

IPC分类号： H01L27/092 ,  H01L21/8238

CPC分类号： H01L21/823807 ,  H01L21/8258 ,  H01L29/1054 ,  H01L29/165 ,  H01L29/66636 ,  H01L29/7848

摘要： A method is provided of fabricating complementary stressed semiconductor devices, e.g., an NFET having a tensile stressed channel and a PFET having a compressive stressed channel. In such method, a first semiconductor region having a lattice constant larger than silicon can be epitaxially grown on an underlying semiconductor region of a substrate. The first semiconductor region can be grown laterally adjacent to a second semiconductor region which has a lattice constant smaller than that of silicon. Layers consisting essentially of silicon can be grown epitaxially onto exposed major surfaces of the first and second semiconductor regions after which gates can be formed which overlie the epitaxially grown silicon layers. Portions of the first and second semiconductor regions adjacent to the gates can be removed to form recesses. Regions consisting essentially of silicon can be grown within the recesses to form embedded silicon regions. Source and drain regions then can be formed in the embedded silicon regions. The difference between the lattice constant of silicon and that of the underlying first and second regions results in tensile stressed silicon over the first semiconductor region and compressive stressed silicon over the second semiconductor region.

摘要翻译： 提供了制造互补应力半导体器件的方法，例如具有拉伸应力通道的NFET和具有压应力通道的PFET。 在这种方法中，可以在衬底的下面的半导体区域外延生长具有大于硅的晶格常数的第一半导体区域。 第一半导体区域可以与具有比硅的晶格常数小的晶格常数的第二半导体区域横向生长。 基本上由硅组成的层可以外延生长到第一和第二半导体区域的暴露的主表面上，之后可以形成覆盖外延生长的硅层的栅极。 可以去除与栅极相邻的第一和第二半导体区域的部分以形成凹部。 基本上由硅组成的区域可以在凹槽内生长以形成嵌入的硅区域。 然后可以在嵌入的硅区域中形成源区和漏区。 硅的晶格常数和下面的第一和第二区域的晶格常数之间的差异导致第一半导体区域上的拉伸应力硅和第二半导体区域上的压应力硅。

公开(公告)号：US20080001182A1

公开(公告)日：2008-01-03

申请号：US11427495

申请日：2006-06-29

申请人： Xiangdong Chen ,  Thomas W. Dyer ,  Kenneth Settlemyer ,  Haining S. Yang

发明人： Xiangdong Chen ,  Thomas W. Dyer ,  Kenneth Settlemyer ,  Haining S. Yang

IPC分类号： H01L29/76 ,  H01L27/148

CPC分类号： H01L29/7848 ,  H01L21/02532 ,  H01L21/30604 ,  H01L21/7624 ,  H01L21/823807 ,  H01L21/823878 ,  H01L21/84 ,  H01L27/092 ,  H01L27/1203 ,  H01L29/045 ,  H01L29/1054 ,  H01L29/16 ,  H01L29/161 ,  H01L29/165 ,  H01L29/66636 ,  H01L29/66772 ,  H01L29/78 ,  H01L29/78684 ,  H01L29/78696

摘要： The present invention relates to improved complementary metal-oxide-semiconductor (CMOS) devices with stressed channel regions. Specifically, each improved CMOS device comprises an field effect transistor (FET) having a channel region located in a semiconductor device structure, which has a top surface oriented along one of a first set of equivalent crystal planes and one or more additional surfaces oriented along a second, different set of equivalent crystal planes. Such additional surfaces can be readily formed by crystallographic etching. Further, one or more stressor layers with intrinsic compressive or tensile stress are located over the additional surfaces of the semiconductor device structure and are arranged and constructed to apply tensile or compressive stress to the channel region of the FET. Such stressor layers can be formed by pseudomorphic growth of a semiconductor material having a lattice constant different from the semiconductor device structure.

摘要翻译： 本发明涉及具有应力通道区域的改进的互补金属氧化物半导体（CMOS）器件。 具体地，每个改进的CMOS器件包括具有位于半导体器件结构中的沟道区的场效应晶体管（FET），其具有沿着第一组等效晶面中的一个取向的顶表面和沿着 第二，不同组的等效晶面。 这种附加表面可以通过晶体蚀刻容易地形成。 此外，具有固有压缩或拉伸应力的一个或多个应力层位于半导体器件结构的附加表面上，并且被布置和构造成将拉应力或压应力施加到FET的沟道区。 这样的应力层可以通过具有与半导体器件结构不同的晶格常数的半导体材料的假晶生长来形成。