公开(公告)号：US07585735B2

公开(公告)日：2009-09-08

申请号：US11047946

申请日：2005-02-01

申请人： Leo Mathew ,  Yang Du ,  Bich-Yen Nguyen ,  Voon-Yew Thean

发明人： Leo Mathew ,  Yang Du ,  Bich-Yen Nguyen ,  Voon-Yew Thean

IPC分类号： H01L21/8234

CPC分类号： H01L29/4983 ,  H01L29/165 ,  H01L29/517 ,  H01L29/665 ,  H01L29/6653 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/66659 ,  H01L29/7843

摘要： A method of forming a semiconductor device is provided in which a substrate (102) is provided which has a gate dielectric layer (106) disposed thereon, and a gate electrode (116) having first and second sidewalls is formed over the gate dielectric layer. First (146) and second (150) extension spacer structures are formed adjacent the first and second sidewalls, respectively. In the resulting device: (a) the first and second extension spacer structures have different dimensions; (b) the first and second extension spacer structures comprise first and second distinct materials; (c) the device has asymmetric source/drain extensions (162); and/or (d) the device has an oxide layer (160) disposed between the first extension spacer structure and the gate electrode, and either (i) the device has no dielectric layer disposed between the second extension spacer structure and the gate electrode, or (ii) the device has a second dielectric layer disposed between the second extension spacer structure and the gate electrode, and the first dielectric layer is substantially thicker than the second dielectric layer.

摘要翻译： 提供一种形成半导体器件的方法，其中设置有其上设置有栅介质层（106）的衬底（102），并且在栅极介电层上形成具有第一和第二侧壁的栅电极（116）。 分别在第一和第二侧壁附近形成第一（146）和第二（150）延伸间隔结构。 在所得装置中：（a）第一和第二延伸间隔结构具有不同的尺寸; （b）第一和第二延伸间隔结构包括第一和第二不同材料; （c）该器件具有不对称的源极/漏极延伸部分（162）; 和/或（d）所述器件具有设置在所述第一延伸间隔物结构和所述栅电极之间的氧化物层（160），以及（i）所述器件在所述第二延伸间隔物结构和所述栅电极之间没有设置介电层， 或者（ii）该器件具有设置在第二延伸间隔物结构和栅极之间的第二介电层，并且第一介电层基本上比第二介电层更厚。

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：US07205210B2

公开(公告)日：2007-04-17

申请号：US10780143

申请日：2004-02-17

申请人： Alexander L. Barr ,  Dejan Jovanovic ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Voon-Yew Thean ,  Ted R. White

发明人： Alexander L. Barr ,  Dejan Jovanovic ,  Bich-Yen Nguyen ,  Mariam G. Sadaka ,  Voon-Yew Thean ,  Ted R. White

IPC分类号： H01L21/30 ,  H01L21/46

CPC分类号： H01L27/1203 ,  H01L21/76254 ,  H01L21/823412 ,  H01L21/823807 ,  H01L21/84

摘要： A first semiconductor structure has a silicon substrate, a first silicon germanium layer grown on the silicon, a second silicon germanium layer on the first silicon germanium layer, and a strained silicon layer on the second silicon germanium layer. A second semiconductor structure has a silicon substrate and an insulating top layer. The silicon layer of the first semiconductor structure is bonded to the insulator layer to form a third semiconductor structure. The second silicon germanium layer is cut to separate most of the first semiconductor structure from the third semiconductor structure. The silicon germanium layer is removed to expose the strained silicon layer where transistors are subsequently formed, which is then the only layer remaining from the first semiconductor structure. The transistors are oriented along the direction and at a 45 degree angle to the direction of the base silicon layer of the second silicon.

摘要翻译： 第一半导体结构具有硅衬底，在硅上生长的第一硅锗层，第一硅锗层上的第二硅锗层和第二硅锗层上的应变硅层。 第二半导体结构具有硅衬底和绝缘顶层。 第一半导体结构的硅层被结合到绝缘体层以形成第三半导体结构。 切割第二硅锗层以将大部分第一半导体结构与第三半导体结构分离。 去除硅锗层以暴露随后形成晶体管的应变硅层，其后是从第一半导体结构残留的唯一层。 晶体管沿着<100>方向定向并且与第二硅的基底硅层的<100>方向成45度角。

公开(公告)号：US20060094169A1

公开(公告)日：2006-05-04

申请号：US10977423

申请日：2004-10-29

申请人： Ted White ,  Alexander Barr ,  Bich-Yen Nguyen ,  Marius Orlowski ,  Mariam Sadaka ,  Voon-Yew Thean

发明人： Ted White ,  Alexander Barr ,  Bich-Yen Nguyen ,  Marius Orlowski ,  Mariam Sadaka ,  Voon-Yew Thean

IPC分类号： H01L21/84 ,  H01L21/00

CPC分类号： H01L29/78696 ,  H01L21/84 ,  H01L27/1203 ,  H01L27/1207 ,  H01L29/045 ,  H01L29/66772

摘要： Two different transistors types are made on different crystal orientations in which both are formed on SOI. A substrate has an underlying semiconductor layer of one of the crystal orientations and an overlying layer of the other crystal orientation. The underlying layer has a portion exposed on which is epitaxially grown an oxygen-doped semiconductor layer that maintains the crystalline structure of the underlying semiconductor layer. A semiconductor layer is then epitaxially grown on the oxygen-doped semiconductor layer. An oxidation step at elevated temperatures causes the oxide-doped region to separate into oxide and semiconductor regions. The oxide region is then used as an insulation layer in an SOI structure and the overlying semiconductor layer that is left is of the same crystal orientation as the underlying semiconductor layer. Transistors of the different types are formed on the different resulting crystal orientations.

摘要翻译： 在不同的晶体取向上制作了两种不同的晶体管类型，其中两者都形成在SOI上。 衬底具有晶体取向之一的底层半导体层和另一晶体取向的上覆层。 底层具有暴露在其上的部分外延生长保持下面的半导体层的晶体结构的氧掺杂半导体层。 然后在氧掺杂半导体层上外延生长半导体层。 在高温下的氧化步骤使得氧化物掺杂区域分离成氧化物和半导体区域。 然后将氧化物区域用作SOI结构中的绝缘层，并且剩下的上覆半导体层具有与下面的半导体层相同的晶体取向。 不同类型的晶体管形成在不同的结晶取向上。

公开(公告)号：US20060076579A1

公开(公告)日：2006-04-13

申请号：US11247866

申请日：2005-10-07

申请人： Voon-Yew Thean ,  Dina Triyoso ,  Bich-Yen Nguyen

发明人： Voon-Yew Thean ,  Dina Triyoso ,  Bich-Yen Nguyen

IPC分类号： H01L29/76

CPC分类号： H01L21/823807 ,  H01L21/823814 ,  H01L21/823835 ,  H01L21/823842 ,  H01L21/823878 ,  H01L21/84 ,  H01L29/165 ,  H01L29/517 ,  H01L29/665 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/66659 ,  H01L29/7848

摘要： A transistor is formed using a semiconductor substrate and forming a control electrode overlying the semiconductor substrate. A first current electrode is formed within the semiconductor substrate and adjacent the control electrode. The first current electrode has a first predetermined semiconductor material. A second current electrode is formed within the semiconductor substrate and adjacent the control electrode to form a channel within the semiconductor substrate. The second current electrode has a second predetermined semiconductor material that is different from the first predetermined semiconductor material. The first predetermined semiconductor material is chosen to optimize bandgap energy of the first current electrode, and the second predetermined semiconductor material is chosen to optimize strain of the channel.

摘要翻译： 使用半导体衬底形成晶体管，并形成覆盖半导体衬底的控制电极。 第一电流电极形成在半导体衬底内并与控制电极相邻。 第一电流电极具有第一预定半导体材料。 第二电流电极形成在半导体衬底内并与控制电极相邻，以在半导体衬底内形成通道。 第二电流电极具有与第一预定半导体材料不同的第二预定半导体材料。 选择第一预定半导体材料以优化第一电流电极的带隙能量，并且选择第二预定半导体材料以优化通道的应变。

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：US20050070056A1

公开(公告)日：2005-03-31

申请号：US10670928

申请日：2003-09-25

申请人： Chun-Li Liu ,  Marius Orlowski ,  Matthew Stoker ,  Philip Tobin ,  Mariam Sadaka ,  Alexander Barr ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Shawn Thomas ,  Ted White

发明人： Chun-Li Liu ,  Marius Orlowski ,  Matthew Stoker ,  Philip Tobin ,  Mariam Sadaka ,  Alexander Barr ,  Bich-Yen Nguyen ,  Voon-Yew Thean ,  Shawn Thomas ,  Ted White

IPC分类号： H01L20060101 ,  H01L21/00 ,  H01L21/338

CPC分类号： H01L29/161 ,  H01L21/26506 ,  H01L21/823807 ,  H01L21/823878 ,  H01L21/84 ,  H01L29/1054 ,  Y10S438/933

摘要： A vacancy injecting process for injecting vacancies in template layer material of an SOI substrate. The template layer material has a crystalline structure that includes, in some embodiments, both germanium and silicon atoms. A strained silicon layer is then epitaxially grown on the template layer material with the beneficial effects that straining has on electron and hole mobility. The vacancy injecting process is performed to inject vacancies and germanium atoms into the crystalline structure wherein germanium atoms recombine with the vacancies. One embodiment, a nitridation process is performed to grow a nitride layer on the template layer material and consume silicon in a way that injects vacancies in the crystalline structure while also allowing germanium atoms to recombine with the vacancies. Other examples of a vacancy injecting processes include silicidation processes, oxynitridation processes, oxidation processes with a chloride bearing gas, or inert gas post bake processes subsequent to an oxidation process.

摘要翻译： 用于在SOI衬底的模板层材料中注入空位的空位注入工艺。 模板层材料具有在一些实施方案中包括锗和硅原子的晶体结构。 然后在模板层材料上外延生长应变硅层，具有应力对电子和空穴迁移率的有益效果。 进行空位注入处理以将空位和锗原子注入晶格结构中，其中锗原子与空位重新组合。 一个实施方案中，进行氮化处理以在模板层材料上生长氮化物层，并以注入晶体结构中的空位并且还允许锗原子与空位复合的方式消耗硅。 空位注入方法的其它实例包括硅化工艺，氧氮化工艺，含氯化物气体的氧化工艺或氧化工艺之后的惰性气体后烘烤工艺。

公开(公告)号：US08039341B2

公开(公告)日：2011-10-18

申请号：US11428953

申请日：2006-07-06

申请人： Voon-Yew Thean ,  Bich-Yen Nguyen ,  Da Zhang

发明人： Voon-Yew Thean ,  Bich-Yen Nguyen ,  Da Zhang

IPC分类号： H01L21/8238

CPC分类号： H01L21/823807 ,  H01L21/823814 ,  H01L21/84 ,  H01L27/1203 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/7843 ,  H01L29/7848

摘要： A semiconductor fabrication process includes masking a first region, e.g., an NMOS region, of a semiconductor wafer, e.g., a biaxial, tensile strained silicon on insulator (SOI) wafer and creating recesses in source/drain regions of a second wafer region, e.g., a PMOS region. The wafer is then annealed in an ambient that promotes migration of silicon. The source/drain recesses are filled with source/drain structures, e.g., by epitaxial growth. The anneal ambient may include a hydrogen bearing species, e.g., H2 or GeH2, maintained at a temperature in the range of approximately 800 to 1000° C. The second region may be silicon and the source/drain structures may be silicon germanium. Creating the recesses may include creating shallow recesses with a first etch process, performing an amorphizing implant to create an amorphous layer, performing an inert ambient anneal to recrystallize the amorphous layer, and deepening the shallow recesses with a second etch process.

摘要翻译： 半导体制造工艺包括掩蔽半导体晶片的第一区域（例如，NMOS区域），例如双轴拉伸应变绝缘体上硅（SOI）晶片，并在第二晶片区域的源极/漏极区域中产生凹陷，例如 ，PMOS区域。 然后将晶片在促进硅迁移的环境中退火。 源极/漏极凹槽用源极/漏极结构填充，例如通过外延生长。 退火环境可以包括保持在约800至1000℃范围内的温度的氢气种类，例如H 2或GeH 2。第二区域可以是硅，并且源极/漏极结构可以是硅锗。 创建凹槽可以包括用第一蚀刻工艺创建浅凹槽，执行非晶化注入以产生非晶层，执行惰性环境退火以使非晶层重结晶，以及用第二蚀刻工艺加深浅凹槽。

公开(公告)号：US07781840B2

公开(公告)日：2010-08-24

申请号：US11742955

申请日：2007-05-01

申请人： Ted R. White ,  Alexander L. Barr ,  Bich-Yen Nguyen ,  Marius K. Orlowski ,  Mariam G. Sadaka ,  Voon-Yew Thean

发明人： Ted R. White ,  Alexander L. Barr ,  Bich-Yen Nguyen ,  Marius K. Orlowski ,  Mariam G. Sadaka ,  Voon-Yew Thean

IPC分类号： H01L29/786

CPC分类号： H01L29/78696 ,  H01L21/84 ,  H01L27/1203 ,  H01L27/1207 ,  H01L29/045 ,  H01L29/66772

摘要： Two different transistors types are made on different crystal orientations in which both are formed on SOI. A substrate has an underlying semiconductor layer of one of the crystal orientations and an overlying layer of the other crystal orientation. The underlying layer has a portion exposed on which is epitaxially grown an oxygen-doped semiconductor layer that maintains the crystalline structure of the underlying semiconductor layer. A semiconductor layer is then epitaxially grown on the oxygen-doped semiconductor layer. An oxidation step at elevated temperatures causes the oxide-doped region to separate into oxide and semiconductor regions. The oxide region is then used as an insulation layer in an SOI structure and the overlying semiconductor layer that is left is of the same crystal orientation as the underlying semiconductor layer. Transistors of the different types are formed on the different resulting crystal orientations.

摘要翻译： 在不同的晶体取向上制作了两种不同的晶体管类型，其中两者都形成在SOI上。 衬底具有晶体取向之一的底层半导体层和另一晶体取向的上覆层。 底层具有暴露在其上的部分外延生长保持下面的半导体层的晶体结构的氧掺杂半导体层。 然后在氧掺杂半导体层上外延生长半导体层。 在高温下的氧化步骤使得氧化物掺杂区域分离成氧化物和半导体区域。 然后将氧化物区域用作SOI结构中的绝缘层，并且剩下的上覆半导体层具有与下面的半导体层相同的晶体取向。 不同类型的晶体管形成在不同的结晶取向上。

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。