公开(公告)号：US20090035911A1

公开(公告)日：2009-02-05

申请号：US11830155

申请日：2007-07-30

申请人： Willy Rachmady ,  Steven Keating ,  Bernhard Sell

发明人： Willy Rachmady ,  Steven Keating ,  Bernhard Sell

IPC分类号： H01L21/336

CPC分类号： H01L21/26506 ,  H01L21/823807 ,  H01L21/823814 ,  H01L29/165 ,  H01L29/66545 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/7833 ,  H01L29/7848

摘要： A method for forming a semiconductor device having abrupt ultra shallow epi-tip regions comprises forming a gate stack on a crystalline substrate, performing a first ion implantation process to amorphisize a first pair of regions of the substrate disposed adjacent to and on laterally opposite sides of the gate stack, forming a pair of spacers on the substrate disposed on laterally opposite sides of the gate stack, performing a second ion implantation process to amorphisize a second pair of regions of the substrate that are disposed on laterally opposite sides of the gate stack and adjacent to the spacers, applying a selective wet etch chemistry to remove the amorphisized first and second pair of regions and form a pair of cavities on laterally opposite sides of the gate stack, and depositing a silicon alloy in the pair of cavities to form source and drain regions and source and drain epi-tip regions.

摘要翻译： 一种用于形成具有突变的超浅表面尖端区域的半导体器件的方法包括在晶体衬底上形成栅极堆叠，执行第一离子注入工艺以使位于邻近和相对侧两侧的衬底的第一对区域非晶化 所述栅堆叠在所述衬底上形成一对间隔物，所述衬底设置在所述栅堆叠的横向相对侧上，执行第二离子注入工艺以使位于所述栅叠层的横向相对侧上的所述衬底的第二对区域非晶化;以及 邻近所述间隔物，施加选择性湿法蚀刻化学物质以去除所述非晶化的第一和第二对区域并在所述栅极堆叠的横向相对侧上形成一对空腔，以及在所述一对空腔中沉积硅合金以形成源和 漏极区域和源极和漏极表面尖端区域。

公开(公告)号：US20070004123A1

公开(公告)日：2007-01-04

申请号：US11173660

申请日：2005-06-30

申请人： Mark Bohr ,  Steven Keating ,  Thomas Letson ,  Anand Murthy ,  Donald O'Neill ,  Willy Rachmady

发明人： Mark Bohr ,  Steven Keating ,  Thomas Letson ,  Anand Murthy ,  Donald O'Neill ,  Willy Rachmady

IPC分类号： H01L21/8238

CPC分类号： H01L29/045 ,  H01L21/30608 ,  H01L29/165 ,  H01L29/665 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/78 ,  H01L29/7848

摘要： Embodiments are an improved transistor structure and the method of fabricating the structure. In particular, a wet etch of an embodiment forms source and drain regions with an improved tip shape to improve the performance of the transistor by improving control of short channel effects, increasing the saturation current, improving control of the metallurgical gate length, increasing carrier mobility, and decreasing contact resistance at the interface between the source and drain and the silicide.

摘要翻译： 实施例是改进的晶体管结构和制造该结构的方法。 特别地，实施例的湿蚀刻形成具有改进的尖端形状的源极和漏极区域，以通过改善短沟道效应的控制，增加饱和电流，改善冶金栅极长度的控制，增加载流子迁移率来提高晶体管的性能 并且在源极和漏极与硅化物之间的界面处降低接触电阻。

公开(公告)号：US20230090092A1

公开(公告)日：2023-03-23

申请号：US17448382

申请日：2021-09-22

申请人： Aaron D. Lilak ,  Orb Acton ,  Cheng-Ying Huang ,  Gilbert Dewey ,  Ehren Mannebach ,  Anh Phan ,  Willy Rachmady ,  Jack T. Kavalieros

发明人： Aaron D. Lilak ,  Orb Acton ,  Cheng-Ying Huang ,  Gilbert Dewey ,  Ehren Mannebach ,  Anh Phan ,  Willy Rachmady ,  Jack T. Kavalieros

IPC分类号： H01L27/12 ,  H01L21/84

摘要： An integrated circuit having a transistor architecture includes a first semiconductor body and a second semiconductor body. The first and second semiconductor bodies are arranged vertically (e.g., stacked configuration) or horizontally (e.g., forksheet configuration) with respect to each other, and separated from one another by insulator material, and each can be configured for planar or non-planar transistor topology. A first gate structure is on the first semiconductor body, and includes a first gate electrode and a first high-k gate dielectric. A second gate structure is on the second semiconductor body, and includes a second gate electrode and a second high-k gate dielectric. In an example, the first gate electrode includes a layer comprising a compound of silicon and one or more metals; the second gate structure may include a silicide workfunction layer, or not. In one example, the first gate electrode is n-type, and the second gate electrode is p-type.

公开(公告)号：US20210202476A1

公开(公告)日：2021-07-01

申请号：US16728983

申请日：2019-12-27

申请人： Cheng-Ying Huang ,  Gilbert Dewey ,  Ashish Agrawal ,  Kimin Jun ,  Willy Rachmady ,  Zachary Geiger ,  Cory Bomberger ,  Ryan Keech ,  Koustav Ganguly ,  Anand Murthy ,  Jack Kavalieros

发明人： Cheng-Ying Huang ,  Gilbert Dewey ,  Ashish Agrawal ,  Kimin Jun ,  Willy Rachmady ,  Zachary Geiger ,  Cory Bomberger ,  Ryan Keech ,  Koustav Ganguly ,  Anand Murthy ,  Jack Kavalieros

IPC分类号： H01L27/06 ,  H01L21/683 ,  H01L21/8238 ,  H01L29/10 ,  H01L29/04 ,  H01L29/08 ,  H01L27/092

摘要： A monolithic three-dimensional integrated circuit may include multiple transistor levels separated by one or more levels of metallization. An upper level transistor structure may include a monocrystalline channel material over a bottom gate stack. The channel material and the gate stack materials may be formed on a donor substrate at any suitable temperature, and subsequently transferred from the donor substrate to a host substrate that includes lower-level circuitry. The upper-level transistor may be patterned from the transferred layers so that the gate electrode includes one or more bonding layers. Source and drain material may be patterned from a source and drain material layer that was transferred from the donor substrate along with the channel material, or source and drain material may be grown at low temperatures from the transferred channel material.

公开(公告)号：US09590089B2

公开(公告)日：2017-03-07

申请号：US13997162

申请日：2011-12-30

申请人： Willy Rachmady ,  Van H. Le ,  Ravi Pillarisetty ,  Jack T. Kavalieros ,  Robert S. Chau ,  Seung Hoon Sung

发明人： Willy Rachmady ,  Van H. Le ,  Ravi Pillarisetty ,  Jack T. Kavalieros ,  Robert S. Chau ,  Seung Hoon Sung

IPC分类号： H01L29/78 ,  H01L29/423 ,  H01L29/66 ,  H01L29/775 ,  H01L29/06 ,  H01L29/10 ,  H01L29/786 ,  B82Y10/00 ,  B82Y40/00

CPC分类号： H01L29/0676 ,  B82Y10/00 ,  B82Y40/00 ,  H01L21/02603 ,  H01L21/30604 ,  H01L29/0673 ,  H01L29/1033 ,  H01L29/41791 ,  H01L29/4232 ,  H01L29/42392 ,  H01L29/66439 ,  H01L29/66545 ,  H01L29/66613 ,  H01L29/66795 ,  H01L29/775 ,  H01L29/78 ,  H01L29/785 ,  H01L29/78696 ,  H01L2029/7858 ,  Y10S977/762 ,  Y10S977/89 ,  Y10S977/938

摘要： Nanowire-based gate all-around transistor devices having one or more active nanowires and one or more inactive nanowires are described herein. Methods to fabricate such devices are also described. One or more embodiments of the present invention are directed at approaches for varying the gate width of a transistor structure comprising a nanowire stack having a distinct number of nanowires. The approaches include rendering a certain number of nanowires inactive (i.e. so that current does not flow through the nanowire), by severing the channel region, burying the source and drain regions, or both. Overall, the gate width of nanowire-based structures having a plurality of nanowires may be varied by rendering a certain number of nanowires inactive, while maintaining other nanowires as active.

摘要翻译： 本文描述了具有一个或多个活性纳米线和一个或多个非活性纳米线的基于纳米线的栅极全周极晶体管器件。 还描述了制造这种装置的方法。 本发明的一个或多个实施例涉及用于改变包括具有不同数量的纳米线的纳米线堆叠的晶体管结构的栅极宽度的方法。 这些方法包括使一定数量的纳米线无效（即使得电流不流过纳米线），通过切断沟道区，掩埋源区和漏区，或两者。 总之，具有多个纳米线的纳米线基结构的栅极宽度可以通过使一定数量的纳米线无效而保持其它纳米线作为活性而变化。

公开(公告)号：US09159787B2

公开(公告)日：2015-10-13

申请号：US14301281

申请日：2014-06-10

申请人： Willy Rachmady ,  Van H. Le ,  Ravi Pillarisetty ,  Jessica S. Kachian ,  Marc C. French ,  Aaron A. Budrevich

发明人： Willy Rachmady ,  Van H. Le ,  Ravi Pillarisetty ,  Jessica S. Kachian ,  Marc C. French ,  Aaron A. Budrevich

IPC分类号： H01L29/06 ,  H01L29/78 ,  H01L29/66 ,  H01L21/306 ,  H01L29/786

CPC分类号： H01L29/0673 ,  B82Y10/00 ,  B82Y40/00 ,  H01L21/02381 ,  H01L21/0245 ,  H01L21/02532 ,  H01L21/02584 ,  H01L21/30604 ,  H01L21/30608 ,  H01L21/3065 ,  H01L29/1054 ,  H01L29/161 ,  H01L29/165 ,  H01L29/167 ,  H01L29/365 ,  H01L29/42392 ,  H01L29/511 ,  H01L29/66439 ,  H01L29/66477 ,  H01L29/66628 ,  H01L29/66742 ,  H01L29/775 ,  H01L29/7781 ,  H01L29/78 ,  H01L29/7848 ,  H01L29/785 ,  H01L29/786 ,  H01L29/78696 ,  Y02E10/50

摘要： Semiconductor device stacks and devices made there from having Ge-rich device layers. A Ge-rich device layer is disposed above a substrate, with a p-type doped Ge etch suppression layer (e.g., p-type SiGe) disposed there between to suppress etch of the Ge-rich device layer during removal of a sacrificial semiconductor layer richer in Si than the device layer. Rates of dissolution of Ge in wet etchants, such as aqueous hydroxide chemistries, may be dramatically decreased with the introduction of a buried p-type doped semiconductor layer into a semiconductor film stack, improving selectivity of etchant to the Ge-rich device layers.

摘要翻译： 在那里制造的半导体器件堆叠和器件具有富锗器件层。 富锗器件层设置在衬底之上，其中设置有p型掺杂Ge蚀刻抑制层（例如，p型SiGe），以在去除牺牲半导体层期间抑制富锗器件层的蚀刻 Si比设备层更丰富。 随着在半导体膜堆叠中引入掩埋的p型掺杂半导体层，可以显着降低Ge在湿蚀刻剂（例如氢氧化物水溶液）中的溶解速率，从而提高蚀刻剂对Ge富集器件层的选择性。

公开(公告)号：US20150060945A1

公开(公告)日：2015-03-05

申请号：US14535387

申请日：2014-11-07

申请人： Anand S. Murthy ,  Glenn A. Glass ,  Tahir Ghani ,  Ravi Pillarisetty ,  Niloy Mukherjee ,  Jack T. Kavalieros ,  Roza Kotlyar ,  Willy Rachmady ,  Mark Y. Liu

发明人： Anand S. Murthy ,  Glenn A. Glass ,  Tahir Ghani ,  Ravi Pillarisetty ,  Niloy Mukherjee ,  Jack T. Kavalieros ,  Roza Kotlyar ,  Willy Rachmady ,  Mark Y. Liu

IPC分类号： H01L29/36 ,  H01L21/02 ,  H01L29/78 ,  H01L29/66 ,  H01L29/165 ,  H01L29/08

CPC分类号： H01L29/0676 ,  H01L21/02532 ,  H01L21/28512 ,  H01L21/28525 ,  H01L21/3215 ,  H01L21/76831 ,  H01L23/535 ,  H01L27/092 ,  H01L27/0924 ,  H01L29/0615 ,  H01L29/0847 ,  H01L29/086 ,  H01L29/165 ,  H01L29/167 ,  H01L29/36 ,  H01L29/41791 ,  H01L29/42392 ,  H01L29/45 ,  H01L29/456 ,  H01L29/4966 ,  H01L29/66477 ,  H01L29/66545 ,  H01L29/6659 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/66681 ,  H01L29/66931 ,  H01L29/7785 ,  H01L29/78 ,  H01L29/7816 ,  H01L29/7833 ,  H01L29/7848 ,  H01L29/785 ,  H01L29/7851

摘要： Techniques are disclosed for forming transistor devices having source and drain regions with high concentrations of boron doped germanium. In some embodiments, an in situ boron doped germanium, or alternatively, boron doped silicon germanium capped with a heavily boron doped germanium layer, are provided using selective epitaxial deposition in the source and drain regions and their corresponding tip regions. In some such cases, germanium concentration can be, for example, in excess of 50 atomic % and up to 100 atomic %, and the boron concentration can be, for instance, in excess of 1E20 cm−3. A buffer providing graded germanium and/or boron concentrations can be used to better interface disparate layers. The concentration of boron doped in the germanium at the epi-metal interface effectively lowers parasitic resistance without degrading tip abruptness. The techniques can be embodied, for instance, in planar or non-planar transistor devices.

摘要翻译： 公开了用于形成具有高掺杂硼掺杂锗的源区和漏区的晶体管器件的技术。 在一些实施例中，使用在源极和漏极区域及其对应的尖端区域中的选择性外延沉积来提供原位硼掺杂锗或者掺杂有硼掺杂锗层的硼掺杂硅锗。 在一些这样的情况下，锗浓度可以例如超过50原子％且高达100原子％，并且硼浓度可以例如超过1E20cm-3。 可以使用提供梯度锗和/或硼浓度的缓冲液来更好地接合不同的层。 锗在外延金属界面掺杂的硼的浓度有效地降低了寄生电阻而不降低尖端突然性。 这些技术可以例如在平面或非平面晶体管器件中实现。

公开(公告)号：US08883573B2

公开(公告)日：2014-11-11

申请号：US13563456

申请日：2012-07-31

申请人： Uday Shah ,  Benjamin Chu-Kung ,  Been-Yih Jin ,  Ravi Pillarisetty ,  Marko Radosavljevic ,  Willy Rachmady

发明人： Uday Shah ,  Benjamin Chu-Kung ,  Been-Yih Jin ,  Ravi Pillarisetty ,  Marko Radosavljevic ,  Willy Rachmady

IPC分类号： H01L21/335 ,  H01L29/06 ,  H01L29/78 ,  H01L21/02 ,  B82Y10/00 ,  B82Y40/00 ,  H01L21/762 ,  H01L29/66 ,  H01L29/775 ,  H01L29/786

CPC分类号： H01L29/0665 ,  B82Y10/00 ,  B82Y40/00 ,  H01L21/02236 ,  H01L21/02532 ,  H01L21/02603 ,  H01L21/76224 ,  H01L29/0649 ,  H01L29/0653 ,  H01L29/0669 ,  H01L29/0673 ,  H01L29/66439 ,  H01L29/775 ,  H01L29/78 ,  H01L29/78696 ,  H01L2221/1094

摘要： The present disclosure relates to the field of fabricating microelectronic devices. In at least one embodiment, the present disclosure relates to forming an isolated nanowire, wherein isolation structure adjacent the nanowire provides a substantially level surface for the formation of microelectronic structures thereon.

摘要翻译： 本公开涉及制造微电子器件的领域。 在至少一个实施方案中，本公开涉及形成分离的纳米线，其中与纳米线相邻的隔离结构提供用于在其上形成微电子结构的基本水平的表面。

公开(公告)号：US20140326953A1

公开(公告)日：2014-11-06

申请号：US14334636

申请日：2014-07-17

申请人： Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Mantu K. Hudait ,  Marko Radosavljevic ,  Jack T. Kavalieros ,  Willy Rachmady ,  Niloy Mukherjee ,  Robert S. Chau

发明人： Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Mantu K. Hudait ,  Marko Radosavljevic ,  Jack T. Kavalieros ,  Willy Rachmady ,  Niloy Mukherjee ,  Robert S. Chau

IPC分类号： H01L29/15 ,  H01L29/417 ,  H01L29/78

CPC分类号： H01L29/7784 ,  H01L29/151 ,  H01L29/155 ,  H01L29/201 ,  H01L29/205 ,  H01L29/401 ,  H01L29/41725 ,  H01L29/41775 ,  H01L29/42316 ,  H01L29/4236 ,  H01L29/517 ,  H01L29/66462 ,  H01L29/775 ,  H01L29/7783 ,  H01L29/78

摘要： Techniques are disclosed for providing a low resistance self-aligned contacts to devices formed in a semiconductor heterostructure. The techniques can be used, for example, for forming contacts to the gate, source and drain regions of a quantum well transistor fabricated in III-V and SiGe/Ge material systems. Unlike conventional contact process flows which result in a relatively large space between the source/drain contacts to gate, the resulting source and drain contacts provided by the techniques described herein are self-aligned, in that each contact is aligned to the gate electrode and isolated therefrom via spacer material.

摘要翻译： 公开了用于向半导体异质结构中形成的器件提供低电阻自对准触点的技术。 这些技术可以用于例如形成与在III-V和SiGe / Ge材料系统中制造的量子阱晶体管的栅极，源极和漏极区的接触。 不同于在源极/漏极接触到栅极之间的相对大的空间的常规接触工艺流程，由本文所描述的技术提供的所得到的源极和漏极触点是自对准的，因为每个触点与栅电极对准并且被隔离 通过间隔材料。

公开(公告)号：US20140175378A1

公开(公告)日：2014-06-26

申请号：US13722746

申请日：2012-12-20

申请人： Niti Goel ,  Niloy Mukherjee ,  Seung Hoon Sung ,  Van Le ,  Matthew Metz ,  Jack Kavalieros ,  RAVI PILLARISETTY ,  Sanaz Gardner ,  SANSAPTAK DASGUPTA ,  Willy Rachmady ,  BENJAMIN CHU-KUNG ,  MARKO RADOSAVLJEVIC ,  Gilbert Dewey ,  Marc French ,  JESSICA KACHIAN ,  SATYARTH SURI ,  Robert Chau

发明人： Niti Goel ,  Niloy Mukherjee ,  Seung Hoon Sung ,  Van Le ,  Matthew Metz ,  Jack Kavalieros ,  RAVI PILLARISETTY ,  Sanaz Gardner ,  SANSAPTAK DASGUPTA ,  Willy Rachmady ,  BENJAMIN CHU-KUNG ,  MARKO RADOSAVLJEVIC ,  Gilbert Dewey ,  Marc French ,  JESSICA KACHIAN ,  SATYARTH SURI ,  Robert Chau

IPC分类号： H01L21/20 ,  H01L21/764

CPC分类号： H01L21/764 ,  H01L21/02381 ,  H01L21/0245 ,  H01L21/02494 ,  H01L21/02507 ,  H01L21/02532 ,  H01L21/76232

摘要： An embodiment includes depositing a material onto a substrate where the material includes a different lattice constant than the substrate (e.g., III-V or IV epitaxial (EPI) material on a Si substrate). An embodiment includes an EPI layer formed within a trench having walls that narrow as the trench extends upwards. An embodiment includes an EPI layer formed within a trench using multiple growth temperatures. A defect barrier, formed in the EPI layer when the temperature changes, contains defects within the trench and below the defect barrier. The EPI layer above the defect barrier and within the trench is relatively defect free. An embodiment includes an EPI layer annealed within a trench to induce defect annihilation. An embodiment includes an EPI superlattice formed within a trench and covered with a relatively defect free EPI layer (that is still included in the trench). Other embodiments are described herein.

摘要翻译： 实施例包括将材料沉积到衬底上，其中材料包括与衬底（例如Si衬底上的III-V或IV外延（EPI）材料）不同的晶格常数。 一个实施例包括形成在沟槽内的EPI层，其具有随着沟槽向上延伸而变窄的壁。 实施例包括使用多个生长温度在沟槽内形成的EPI层。 当温度变化时，在EPI层中形成的缺陷屏障在沟槽内和缺陷屏障之下包含缺陷。 缺陷屏障之上和沟槽内的EPI层相对无缺陷。 一个实施方案包括在沟槽内退火以引发缺陷湮灭的EPI层。 一个实施例包括形成在沟槽内并覆盖有相对无缺陷的EPI层（仍包含在沟槽中）的EPI超晶格。 本文描述了其它实施例。