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：US07442586B2

公开(公告)日：2008-10-28

申请号：US11308516

申请日：2006-03-31

申请人： Thomas W. Dyer ,  Zhijiong Luo

发明人： Thomas W. Dyer ,  Zhijiong Luo

IPC分类号： H01L21/00 ,  H01L21/84 ,  H01L21/20 ,  H01L21/36

CPC分类号： H01L29/0653 ,  H01L29/66772 ,  H01L29/78639

摘要： An improved semiconductor-on-insulator (SOI) substrate is provided, which has a substantially planar upper surface and comprises at least first and second patterned buried insulator layers. Specifically, the first patterned buried insulator layer has a first thickness and is located in the SOI substrate at a first depth from the substantially planar upper surface, and the second patterned buried insulator layer has a second, different thickness and is located in the SOI substrate at a second, different depth from the substantially planar upper surface. The first and second patterned buried insulator layers are separated from each other by one or more interlayer gaps, which provide body contacts for the SOI substrate. The SOI substrate of the present invention can be readily formed by a method that includes at least two independent ion implantation steps.

摘要翻译： 提供了一种改进的绝缘体上半导体（SOI）衬底，其具有基本平坦的上表面，并且至少包括第一和第二图案化的掩埋绝缘体层。 具体地，第一图案化掩埋绝缘体层具有第一厚度并且位于距离基本上平坦的上表面的第一深度处的SOI衬底中，并且第二图案化掩埋绝缘体层具有第二不同厚度并且位于SOI衬底中 在距离基本平坦的上表面不同的深度处。 第一和第二图案化的掩埋绝缘体层通过一个或多个夹层间隙彼此分开，这为SOI衬底提供体接触。 本发明的SOI衬底可以通过包括至少两个独立离子注入步骤的方法容易地形成。

公开(公告)号：US07550330B2

公开(公告)日：2009-06-23

申请号：US11564352

申请日：2006-11-29

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Jack A. Mandelman

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Jack A. Mandelman

IPC分类号： H01L21/00 ,  H01L21/84

CPC分类号： H01L29/78615 ,  H01L29/66772 ,  H01L29/78603 ,  H01L29/78618

摘要： A semiconductor structure is provided that has body contacts that are located at the edges of the device channel and a buried insulating region under the device channel that is shallower than the buried insulating regions under the source/drain junctions. A method of forming such a semiconductor structure is also described. The inventive method provides for self-alignment of the various features mentioned above with the gate conductor of the structure.

摘要翻译： 提供半导体结构，其具有位于器件沟道的边缘处的体接触以及在器件沟道下方比在源极/漏极结下方的掩埋绝缘区域浅的掩埋绝缘区域。 还描述了形成这种半导体结构的方法。 本发明的方法提供了上述各种特征与结构的栅极导体的自对准。

公开(公告)号：US20080185645A1

公开(公告)日：2008-08-07

申请号：US11670100

申请日：2007-02-01

申请人： Zhijiong Luo ,  Huilong Zhu ,  Sunfei Fang ,  Thomas W. Dyer

发明人： Zhijiong Luo ,  Huilong Zhu ,  Sunfei Fang ,  Thomas W. Dyer

IPC分类号： H01L29/78 ,  H01L21/336

CPC分类号： H01L29/0847 ,  H01L21/28518 ,  H01L23/485 ,  H01L29/6653 ,  H01L29/66545 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/7834 ,  H01L2924/0002 ,  H01L2924/00

摘要： A semiconductor structure includes a stepped source and drain region located in part within a semiconductor substrate that preferably has a step in a direction of a gate electrode located over a channel region that adjoins the stepped source and drain region within the semiconductor substrate. A stepped portion of the stepped source and drain region covers an extension region within the stepped source and drain region.

摘要翻译： 半导体结构包括部分地位于半导体衬底内的阶梯式源极和漏极区域，其优选地具有位于与半导体衬底内的阶梯式源极和漏极区域相邻的沟道区域上的栅极电极的方向上的台阶。 阶梯式源极和漏极区域的阶梯部分覆盖阶梯式源极和漏极区域内的延伸区域。

公开(公告)号：US20080121994A1

公开(公告)日：2008-05-29

申请号：US11564352

申请日：2006-11-29

申请人： Thomas W. Dyer ,  Zhijiong Luo ,  Jack A. Mandelman

发明人： Thomas W. Dyer ,  Zhijiong Luo ,  Jack A. Mandelman

IPC分类号： H01L29/786 ,  H01L21/336

CPC分类号： H01L29/78615 ,  H01L29/66772 ,  H01L29/78603 ,  H01L29/78618

摘要： A semiconductor structure is provided that has body contacts that are located at the edges of the device channel and a buried insulating region under the device channel that is shallower than the buried insulating regions under the source/drain junctions. A method of forming such a semiconductor structure is also described. The inventive method provides for self-alignment of the various features mentioned above with the gate conductor of the structure.

摘要翻译： 提供半导体结构，其具有位于器件沟道的边缘处的体接触以及在器件沟道下方比在源极/漏极结下方的掩埋绝缘区域浅的掩埋绝缘区域。 还描述了形成这种半导体结构的方法。 本发明的方法提供了上述各种特征与结构的栅极导体的自对准。