公开(公告)号：US20090152642A1

公开(公告)日：2009-06-18

申请号：US12355368

申请日：2009-01-16

申请人： Nestor A. Bojarczuk, JR. ,  Cyril Cabral, JR. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, JR. ,  Cyril Cabral, JR. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L27/092 ,  H01L21/336 ,  H01L21/02

CPC分类号： H01L29/513 ,  H01L21/28079 ,  H01L21/28088 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/517

摘要： The present invention provides a semiconductor structure including a semiconductor substrate having a plurality of source and drain diffusion regions located therein, each pair of source and drain diffusion regions are separated by a device channel. The structure further includes a first gate stack of pFET device located on top of some of the device channels, the first gate stack including a high-k gate dielectric, an insulating interlayer abutting the gate dielectric and a fully silicided metal gate electrode abutting the insulating interlayer, the insulating interlayer includes an insulating metal nitride that stabilizes threshold voltage and flatband voltage of the p-FET device to a targeted value and is one of aluminum oxynitride, boron nitride, boron oxynitride, gallium nitride, gallium oxynitride, indium nitride and indium oxynitride. A second gate stack of an nFET devices is located on top remaining device channels, the second gate stack including a high-k gate dielectric and a fully silicided gate electrode located directly atop the high-k gate dielectric.

摘要翻译： 本发明提供一种半导体结构，其包括具有位于其中的多个源极和漏极扩散区域的半导体衬底，每对源极和漏极扩散区域由器件沟道分离。 该结构还包括位于一些器件通道顶部的pFET器件的第一栅极堆叠，第一栅极堆叠包括高k栅极电介质，邻接栅极电介质的绝缘夹层和邻接绝缘体的完全硅化金属栅电极 中间层，绝缘中间层包括将p-FET器件的阈值电压和扁平带电压稳定到目标值的绝缘金属氮化物，并且是氮氧化铝，氮化硼，氮氧化硼，氮化镓，氮氧化镓，氮化铟和铟中的一种 氮氧化物。 nFET器件的第二栅极堆叠位于顶部剩余器件沟道上，第二栅极堆叠包括高k栅极电介质和直接位于高k栅极电介质顶部的完全硅化栅电极。

公开(公告)号：US07452767B2

公开(公告)日：2008-11-18

申请号：US11500254

申请日：2006-08-07

申请人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L21/8238

CPC分类号： H01L29/513 ,  H01L21/28079 ,  H01L21/28088 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/517

摘要： A method of forming a CMOS structure, and the device produced therefrom, having improved threshold voltage and flatband voltage stability. The inventive method includes the steps of providing a semiconductor substrate having an nFET region and a pFET region; forming a dielectric stack atop the semiconductor substrate comprising an insulating interlayer atop a high k dielectric; removing the insulating interlayer from the nFET region without removing the insulating interlayer from the pFET region; and providing at least one gate stack in the pFET region and at least one gate stack in the nFET region. The insulating interlayer can be AlN or AlOxNy. The high k dielectric can be HfO2, hafnium silicate or hafnium silicon oxynitride. The insulating interlayer can be removed from the nFET region by a wet etch including a HCl/H2O2 peroxide solution.

摘要翻译： 一种形成CMOS结构的方法及其制造的器件，具有改进的阈值电压和平带电压稳定性。 本发明的方法包括提供具有nFET区和pFET区的半导体衬底的步骤; 在所述半导体衬底上形成包括在高k电介质顶上的绝缘夹层的电介质叠层; 从nFET区域去除绝缘中间层而不从pFET区域去除绝缘中间层; 以及在pFET区域中提供至少一个栅极堆叠以及在nFET区域中提供至少一个栅极堆叠。 绝缘中间层可以是AlN或AlO x N y Y。 高k电介质可以是HfO 2，硅酸铪或铪硅氮氧化物。 可以通过包含HCl / H 2 O 2 O 2过氧化物溶液的湿蚀刻从nFET区域去除绝缘中间层。

公开(公告)号：US20080182389A1

公开(公告)日：2008-07-31

申请号：US12062972

申请日：2008-04-04

申请人： Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Paul C. Jamison ,  Rajarao Jammy ,  Barry P. Linder ,  Vijay Narayanan

发明人： Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Paul C. Jamison ,  Rajarao Jammy ,  Barry P. Linder ,  Vijay Narayanan

IPC分类号： H01L21/479

CPC分类号： H01L29/513 ,  H01L21/28194 ,  H01L21/28238 ,  H01L21/823807 ,  H01L29/105 ,  H01L29/1083 ,  H01L29/517 ,  H01L29/518 ,  H01L29/6659 ,  H01L29/7833

摘要： A semiconductor structure, particularly a pFET, which includes a dielectric material that has a dielectric constant of greater than that of SiO2 and a Ge or Si content of greater than 50% and at least one other means for threshold/flatband voltage tuning by material stack engineering is provided. The other means contemplated in the present invention include, for example, utilizing an insulating interlayer atop the dielectric for charge fixing and/or by forming an engineered channel region. The present invention also relates to a method of fabricating such a CMOS structure.

摘要翻译： 一种半导体结构，特别是pFET，其包括介电常数大于SiO 2的介电常数和大于50％的Ge或Si含量的至少一种其它装置， 提供材料堆栈工程的阈值/平带电压调谐。 本发明中考虑的其它方法包括例如在用于电荷固定的电介质的顶部和/或通过形成工程化的沟道区域之间使用绝缘夹层。 本发明还涉及一种制造这种CMOS结构的方法。

公开(公告)号：US08785995B2

公开(公告)日：2014-07-22

申请号：US13108340

申请日：2011-05-16

申请人： Catherine A. Dubourdieu ,  David J. Frank ,  Martin M. Frank ,  Vijay Narayanan ,  Paul M. Solomon ,  Thomas N. Theis

发明人： Catherine A. Dubourdieu ,  David J. Frank ,  Martin M. Frank ,  Vijay Narayanan ,  Paul M. Solomon ,  Thomas N. Theis

IPC分类号： H01L21/02 ,  H01L21/00

CPC分类号： H01L29/4232 ,  H01L29/42316 ,  H01L29/812

摘要： Ferroelectric semiconductor switching devices are provided, including field effect transistor (FET) devices having gate stack structures formed with a ferroelectric layer disposed between a gate contact and a thin conductive layer (“quantum conductive layer”). The gate contact and ferroelectric layer serve to modulate an effective work function of the thin conductive layer. The thin conductive layer with the modulated work function is coupled to a semiconductor channel layer to modulate current flow through the semiconductor and achieve a steep sub-threshold slope.

摘要翻译： 提供了铁电半导体开关器件，包括具有栅极叠层结构的场效应晶体管（FET）器件，栅极叠层结构形成有设置在栅极接触和薄导电层（“量子传导层”）之间的铁电层。 栅极接触和铁电层用于调制薄导电层的有效功函数。 具有调制功函数的薄导电层耦合到半导体沟道层，以调制通过半导体的电流，并实现陡峭的子阈值斜率。

公开(公告)号：US20120228773A1

公开(公告)日：2012-09-13

申请号：US13042618

申请日：2011-03-08

申请人： Stephen L. Brown ,  John Bruley ,  Cyril Cabral, JR. ,  Sandro Callegari ,  Martin M. Frank ,  Michael A. Guillorn ,  Marinus Hopstaken ,  Vijay Narayanan ,  Keith Kwong Hon Wong

发明人： Stephen L. Brown ,  John Bruley ,  Cyril Cabral, JR. ,  Sandro Callegari ,  Martin M. Frank ,  Michael A. Guillorn ,  Marinus Hopstaken ,  Vijay Narayanan ,  Keith Kwong Hon Wong

IPC分类号： H01L23/48 ,  H01L21/28

CPC分类号： H01L29/4966 ,  H01L21/28088 ,  H01L23/53266 ,  H01L29/517 ,  H01L2924/0002 ,  H01L2924/00

摘要： A layered structure and semiconductor device and methods for fabricating a layered structure and semiconductor device. The layered structure includes: a base layer including a material containing titanium nitride, tantalum nitride, or a combination thereof; a conductive layer including a material containing: tantalum aluminum nitride, titanium aluminum nitride, tantalum silicon nitride, titanium silicon nitride, tantalum hafnium nitride, titanium hafnium nitride, hafnium nitride, hafnium carbide, tantalum carbide, vanadium nitride, niobium nitride, or any combination thereof; and a tungsten layer. The semiconductor device includes: a semiconductor substrate; a base layer; a conductive layer; and a tungsten layer.

公开(公告)号：US07745278B2

公开(公告)日：2010-06-29

申请号：US12211530

申请日：2008-09-16

申请人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L21/8238

CPC分类号： H01L29/513 ,  H01L21/28079 ,  H01L21/28088 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/517

摘要： A method of forming a CMOS structure, and the device produced therefrom, having improved threshold voltage and flatband voltage stability. The inventive method includes the steps of providing a semiconductor substrate having an nFET region and a pFET region; forming a dielectric stack atop the semiconductor substrate comprising an insulating interlayer atop a high k dielectric; removing the insulating interlayer from the nFET region without removing the insulating interlayer from the pFET region; and providing at least one gate stack in the pFET region and at least one gate stack in the nFET region. The insulating interlayer can be AlN or AlOxNy. The high k dielectric can be HfO2, hafnium silicate or hafnium silicon oxynitride. The insulating interlayer can be removed from the nFET region by a wet etch including a HCl/H2O2 peroxide solution.

摘要翻译： 一种形成CMOS结构的方法及其制造的器件，具有改进的阈值电压和平带电压稳定性。 本发明的方法包括提供具有nFET区和pFET区的半导体衬底的步骤; 在所述半导体衬底上形成包括在高k电介质顶上的绝缘夹层的电介质叠层; 从nFET区域去除绝缘中间层而不从pFET区域去除绝缘中间层; 以及在pFET区域中提供至少一个栅极堆叠以及在nFET区域中提供至少一个栅极堆叠。 绝缘中间层可以是AlN或AlOxNy。 高k电介质可以是HfO 2，硅酸铪或铪硅氮氧化物。 可以通过包括HCl / H2O2过氧化物溶液的湿蚀刻从nFET区域去除绝缘中间层。

公开(公告)号：US20090108373A1

公开(公告)日：2009-04-30

申请号：US11927964

申请日：2007-10-30

申请人： Martin M. Frank ,  Arvind Kumar ,  Vijay Narayanan ,  Jeffrey Sleight

发明人： Martin M. Frank ,  Arvind Kumar ,  Vijay Narayanan ,  Jeffrey Sleight

IPC分类号： H01L27/11 ,  H01L21/8244

CPC分类号： H01L27/1104 ,  H01L27/11 ,  H01L27/1108

摘要： Techniques for combining transistors having different threshold voltage requirements from one another are provided. In one aspect, a semiconductor device comprises a substrate having a first and a second nFET region, and a first and a second pFET region; a logic nFET on the substrate over the first nFET region; a logic pFET on the substrate over the first pFET region; a SRAM nFET on the substrate over the second nFET region; and a SRAM pFET on the substrate over the second pFET region, each comprising a gate stack having a metal layer over a high-K layer. The logic nFET gate stack further comprises a capping layer separating the metal layer from the high-K layer, wherein the capping layer is further configured to shift a threshold voltage of the logic nFET relative to a threshold voltage of one or more of the logic pFET, SRAM nFET and SRAM pFET.

摘要翻译： 提供了用于组合彼此具有不同阈值电压要求的晶体管的技术。 在一个方面，一种半导体器件包括具有第一和第二nFET区的衬底以及第一和第二pFET区; 在第一nFET区域上的衬底上的逻辑nFET; 在第一pFET区上的衬底上的逻辑pFET; 位于第二nFET区上的衬底上的SRAM nFET; 以及在第二pFET区上的衬底上的SRAM pFET，每个包括在高K层上具有金属层的栅极堆叠。 逻辑nFET栅极堆叠还包括将金属层与高K层分隔开的覆盖层，其中封盖层还被配置为相对于逻辑pFET中的一个或多个的阈值电压移动逻辑nFET的阈值电压 ，SRAM nFET和SRAM pFET。

公开(公告)号：US07479683B2

公开(公告)日：2009-01-20

申请号：US10957342

申请日：2004-10-01

申请人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L29/94 ,  H01L29/76

CPC分类号： H01L29/513 ,  H01L21/28079 ,  H01L21/28088 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/517

摘要： The present invention provides a semiconductor structure including a semiconductor substrate having a plurality of source and drain diffusion regions located therein, each pair of source and drain diffusion regions are separated by a device channel. The structure further includes a first stack of a pFET device located on top of some of the device channels, the first gate stack including a high-k gate dielectric, an insulating interlayer abutting the gate dielectric and a fully silicided metal gate electrode abutting the insulating interlayer, the insulating interlayer includes an insulating metal nitride that stabilizes threshold voltage and flatband voltage of the p-FET device to a targeted value and is one of aluminum oxynitride, boron nitride, boron oxynitride, gallium nitride, gallium oxynitride, indium nitride and indium oxynitride. A second gate stack of an nFET device is located on top remaining device channels, the second gate stack including a high-k gate dielectric and a fully silicided gate electrode located directly atop the high-k gate dielectric.

摘要翻译： 本发明提供一种半导体结构，其包括具有位于其中的多个源极和漏极扩散区域的半导体衬底，每对源极和漏极扩散区域由器件沟道分离。 该结构还包括位于一些器件通道顶部的pFET器件的第一堆叠，第一栅极堆叠包括高k栅极电介质，邻接栅极电介质的绝缘夹层和邻接绝缘体的完全硅化金属栅电极 中间层，绝缘中间层包括将p-FET器件的阈值电压和扁平带电压稳定到目标值的绝缘金属氮化物，并且是氮氧化铝，氮化硼，氮氧化硼，氮化镓，氮氧化镓，氮化铟和铟中的一种 氮氧化物。 nFET器件的第二栅极堆叠位于顶部剩余器件沟道上，第二栅极堆叠包括高k栅极电介质和直接位于高k栅极电介质顶部的完全硅化栅电极。

公开(公告)号：US20090011610A1

公开(公告)日：2009-01-08

申请号：US12211530

申请日：2008-09-16

申请人： Nestor A. Bojarczuk, JR. ,  Cyril Cabral, JR. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, JR. ,  Cyril Cabral, JR. ,  Eduard A. Cartier ,  Matthew W. Copel ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L21/31

CPC分类号： H01L29/513 ,  H01L21/28079 ,  H01L21/28088 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/517

摘要： A method of forming a CMOS structure, and the device produced therefrom, having improved threshold voltage and flatband voltage stability. The inventive method includes the steps of providing a semiconductor substrate having an nFET region and a pFET region; forming a dielectric stack atop the semiconductor substrate comprising an insulating interlayer atop a high k dielectric; removing the insulating interlayer from the nFET region without removing the insulating interlayer from the pFET region; and providing at least one gate stack in the pFET region and at least one gate stack in the nFET region. The insulating interlayer can be AlN or AlOxNy. The high k dielectric can be HfO2, hafnium silicate or hafnium silicon oxynitride. The insulating interlayer can be removed from the nFET region by a wet etch including a HCl/H2O2 peroxide solution.

摘要翻译： 一种形成CMOS结构的方法及其制造的器件，具有改进的阈值电压和平带电压稳定性。 本发明的方法包括提供具有nFET区和pFET区的半导体衬底的步骤; 在所述半导体衬底上形成包括在高k电介质顶上的绝缘夹层的电介质叠层; 从nFET区域去除绝缘中间层而不从pFET区域去除绝缘中间层; 以及在pFET区域中提供至少一个栅极堆叠以及在nFET区域中提供至少一个栅极堆叠。 绝缘中间层可以是AlN或AlOxNy。 高k电介质可以是HfO 2，硅酸铪或铪硅氮氧化物。 可以通过包括HCl / H2O2过氧化物溶液的湿蚀刻从nFET区域去除绝缘中间层。

公开(公告)号：US07242055B2

公开(公告)日：2007-07-10

申请号：US10988733

申请日：2004-11-15

申请人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Paul C. Jamison ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

发明人： Nestor A. Bojarczuk, Jr. ,  Cyril Cabral, Jr. ,  Eduard A. Cartier ,  Martin M. Frank ,  Evgeni P. Gousev ,  Supratik Guha ,  Paul C. Jamison ,  Rajarao Jammy ,  Vijay Narayanan ,  Vamsi K. Paruchuri

IPC分类号： H01L29/792

CPC分类号： H01L29/513 ,  H01L21/28194 ,  H01L21/2822 ,  H01L21/823828 ,  H01L21/823857 ,  H01L29/495 ,  H01L29/4966 ,  H01L29/4975 ,  H01L29/517 ,  H01L29/518

摘要： A semiconductor structure is provided that includes a Vt stabilization layer between a gate dielectric and a gate electrode. The Vt stabilization layer is capable of stabilizing the structure's threshold voltage and flatband voltage to a targeted value and comprises a nitrided metal oxide, or a nitrogen-free metal oxide, with the proviso that when the Vt stabilization layer comprises a nitrogen-free metal oxide, at least one of the semiconductor substrate or the gate dielectric includes nitrogen. The present invention also provides a method of fabricating such a structure.

摘要翻译： 提供了一种半导体结构，其包括在栅极电介质和栅电极之间的V 1稳定层。 VST稳定层能够将结构的阈值电压和平带电压稳定到目标值，并且包括氮化金属氧化物或无氮金属氧化物，条件是当V < 稳定层包括无氮金属氧化物，半导体衬底或栅极电介质中的至少一个包括氮。 本发明还提供一种制造这种结构的方法。