公开(公告)号：US09748338B2

公开(公告)日：2017-08-29

申请号：US13538985

申请日：2012-06-29

申请人： Gilbert Dewey ,  Marko Radosavljevic ,  Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Niloy Mukherjee

发明人： Gilbert Dewey ,  Marko Radosavljevic ,  Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Niloy Mukherjee

IPC分类号： H01L29/78 ,  H01L21/762 ,  H01L29/10 ,  H01L29/66

CPC分类号： H01L29/1054 ,  H01L21/76224 ,  H01L29/66795 ,  H01L29/785

摘要： A fin is formed over a first barrier layer over a substrate. The first barrier layer has a band gap greater than the band gap of the fin. In one embodiment, a gate dielectric layer is deposited on the top surface and opposing sidewalls of the fin and is adjacent to a second barrier layer deposited on the first barrier layer underneath the fin. In one embodiment, the gate dielectric layer is deposited on the top surface and the opposing sidewalls of the fin and an isolating layer is formed adjacent to the first barrier layer underneath the fin. In one embodiment, the gate dielectric layer is deposited on the top surface and the opposing sidewalls of the fin, and an isolating layer is formed adjacent to the second barrier layer deposited between the fin and the first barrier layer.

公开(公告)号：US20160233344A1

公开(公告)日：2016-08-11

申请号：US15134093

申请日：2016-04-20

申请人： Ravi Pillarisetty ,  Willy Rachmady ,  Van H. Le ,  Seung Hoon Sung ,  Jessica S. Kachian ,  Jack T. Kavalieros ,  Han Wui Then ,  Gilbert Dewey ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Niloy Mukherjee

发明人： Ravi Pillarisetty ,  Willy Rachmady ,  Van H. Le ,  Seung Hoon Sung ,  Jessica S. Kachian ,  Jack T. Kavalieros ,  Han Wui Then ,  Gilbert Dewey ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Niloy Mukherjee

IPC分类号： H01L29/786 ,  H01L29/423 ,  H01L29/66 ,  H01L29/06

CPC分类号： H01L29/78609 ,  H01L29/0653 ,  H01L29/0673 ,  H01L29/0676 ,  H01L29/165 ,  H01L29/205 ,  H01L29/42392 ,  H01L29/66742 ,  H01L29/785 ,  H01L29/78606 ,  H01L29/78618 ,  H01L29/78681 ,  H01L29/78684 ,  H01L29/78696

摘要： Deep gate-all-around semiconductor devices having germanium or group III-V active layers are described. For example, a non-planar semiconductor device includes a hetero-structure disposed above a substrate. The hetero-structure includes a hetero-junction between an upper layer and a lower layer of differing composition. An active layer is disposed above the hetero-structure and has a composition different from the upper and lower layers of the hetero-structure. A gate electrode stack is disposed on and completely surrounds a channel region of the active layer, and is disposed in a trench in the upper layer and at least partially in the lower layer of the hetero-structure. Source and drain regions are disposed in the active layer and in the upper layer, but not in the lower layer, on either side of the gate electrode stack.

公开(公告)号：US09356099B2

公开(公告)日：2016-05-31

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 ,  H01L29/41 ,  H01L29/78 ,  H01L29/66 ,  H01L29/778 ,  H01L29/775 ,  H01L29/417 ,  H01L29/423 ,  H01L29/51

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.

公开(公告)号：US09240410B2

公开(公告)日：2016-01-19

申请号：US13976413

申请日：2011-12-19

申请人： Han Wui Then ,  Robert Chau ,  Benjamin Chu-Kung ,  Gilbert Dewey ,  Jack Kavalieros ,  Matthew Metz ,  Niloy Mukherjee ,  Ravi Pillarisetty ,  Marko Radosavljevic

发明人： Han Wui Then ,  Robert Chau ,  Benjamin Chu-Kung ,  Gilbert Dewey ,  Jack Kavalieros ,  Matthew Metz ,  Niloy Mukherjee ,  Ravi Pillarisetty ,  Marko Radosavljevic

IPC分类号： H01L27/088 ,  H01L29/66 ,  H01L29/775 ,  H01L29/778 ,  H01L29/786 ,  H01L29/78 ,  B82Y10/00 ,  H01L29/06 ,  H01L29/20

CPC分类号： H01L29/158 ,  B82Y10/00 ,  H01L21/02603 ,  H01L23/66 ,  H01L27/0605 ,  H01L27/0886 ,  H01L29/045 ,  H01L29/0669 ,  H01L29/0673 ,  H01L29/0676 ,  H01L29/068 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/42392 ,  H01L29/66431 ,  H01L29/66462 ,  H01L29/66469 ,  H01L29/66522 ,  H01L29/66742 ,  H01L29/775 ,  H01L29/778 ,  H01L29/7786 ,  H01L29/785 ,  H01L29/78618 ,  H01L29/78681 ,  H01L29/78696 ,  H01L2223/6677 ,  Y10S977/938

摘要： A group III-N nanowire is disposed on a substrate. A longitudinal length of the nanowire is defined into a channel region of a first group III-N material, a source region electrically coupled with a first end of the channel region, and a drain region electrically coupled with a second end of the channel region. A second group III-N material on the first group III-N material serves as a charge inducing layer, and/or barrier layer on surfaces of nanowire. A gate insulator and/or gate conductor coaxially wraps completely around the nanowire within the channel region. Drain and source contacts may similarly coaxially wrap completely around the drain and source regions.

公开(公告)号：US20150349077A1

公开(公告)日：2015-12-03

申请号：US14821561

申请日：2015-08-07

申请人： Ravi Pillarisetty ,  Willy Rachmady ,  Van H. Le ,  Seung Hoon Sung ,  Jessica S. Kachian ,  Jack T. Kavalieros ,  Han Wui Then ,  Gilbert Dewey ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Niloy Mukherjee

发明人： Ravi Pillarisetty ,  Willy Rachmady ,  Van H. Le ,  Seung Hoon Sung ,  Jessica S. Kachian ,  Jack T. Kavalieros ,  Han Wui Then ,  Gilbert Dewey ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Niloy Mukherjee

IPC分类号： H01L29/423 ,  H01L29/205 ,  H01L29/786 ,  H01L29/165 ,  H01L29/06

CPC分类号： H01L29/78609 ,  H01L29/0653 ,  H01L29/0673 ,  H01L29/0676 ,  H01L29/165 ,  H01L29/205 ,  H01L29/42392 ,  H01L29/66742 ,  H01L29/785 ,  H01L29/78606 ,  H01L29/78618 ,  H01L29/78681 ,  H01L29/78684 ,  H01L29/78696

摘要： Deep gate-all-around semiconductor devices having germanium or group III-V active layers are described. For example, a non-planar semiconductor device includes a hetero-structure disposed above a substrate. The hetero-structure includes a hetero-junction between an upper layer and a lower layer of differing composition. An active layer is disposed above the hetero-structure and has a composition different from the upper and lower layers of the hetero-structure. A gate electrode stack is disposed on and completely surrounds a channel region of the active layer, and is disposed in a trench in the upper layer and at least partially in the lower layer of the hetero-structure. Source and drain regions are disposed in the active layer and in the upper layer, but not in the lower layer, on either side of the gate electrode stack.

摘要翻译： 描述具有锗或III-V族有源层的深栅极全面半导体器件。 例如，非平面半导体器件包括设置在衬底上的异质结构。 异质结构包括不同组成的上层和下层之间的异质结。 有源层设置在杂结构上方，并且具有与异质结构的上层和下层不同的组成。 栅电极堆叠设置在有源层的沟道区上并完全包围有源层的沟道区，并且设置在上层中的沟槽中，并且至少部分地设置在异质结构的下层中。 源极和漏极区域设置在栅电极堆叠的任一侧上的有源层和上层中，而不是在下层中。

公开(公告)号：US08890118B2

公开(公告)日：2014-11-18

申请号：US12972057

申请日：2010-12-17

申请人： Benjamin Chu-Kung ,  Gilbert Dewey ,  Marko Radosavljevic ,  Niloy Mukherjee

发明人： Benjamin Chu-Kung ,  Gilbert Dewey ,  Marko Radosavljevic ,  Niloy Mukherjee

IPC分类号： H01L29/06 ,  H01L29/08 ,  H01L29/739

CPC分类号： H01L29/7391 ,  H01L29/0843

摘要： The present disclosure relates to the field of microelectronic transistor fabrication and, more particularly, to the fabrication of a tunnel field effect transistor having an improved on-current level without a corresponding increasing the off-current level, achieved by the addition of a transition layer between a source and an intrinsic channel of the tunnel field effect transistor.

摘要翻译： 本公开涉及微电子晶体管制造领域，更具体地说，涉及具有改善的导通电流水平的隧道场效应晶体管的制造，而不相应地增加截止电流水平，通过添加过渡层 在隧道场效应晶体管的源极和固有通道之间。

公开(公告)号：US20140332852A1

公开(公告)日：2014-11-13

申请号：US14340981

申请日：2014-07-25

申请人： Gilbert Dewey ,  Marko Radosavljevic ,  Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Niloy Mukherjee

发明人： Gilbert Dewey ,  Marko Radosavljevic ,  Ravi Pillarisetty ,  Benjamin Chu-Kung ,  Niloy Mukherjee

IPC分类号： H01L29/40 ,  H01L29/423 ,  H01L29/205 ,  H01L29/78 ,  H01L29/51

CPC分类号： H01L29/0673 ,  B82Y10/00 ,  B82Y99/00 ,  H01L29/0665 ,  H01L29/201 ,  H01L29/205 ,  H01L29/408 ,  H01L29/4236 ,  H01L29/42364 ,  H01L29/42392 ,  H01L29/511 ,  H01L29/512 ,  H01L29/513 ,  H01L29/517 ,  H01L29/518 ,  H01L29/66462 ,  H01L29/775 ,  H01L29/78 ,  H01L29/785 ,  H01L29/78696

摘要： Non-planar semiconductor devices having group III-V material active regions with multi-dielectric gate stacks are described. For example, a semiconductor device includes a hetero-structure disposed above a substrate. The hetero-structure includes a three-dimensional group III-V material body with a channel region. A source and drain material region is disposed above the three-dimensional group III-V material body. A trench is disposed in the source and drain material region separating a source region from a drain region, and exposing at least a portion of the channel region. A gate stack is disposed in the trench and on the exposed portion of the channel region. The gate stack includes first and second dielectric layers and a gate electrode.

公开(公告)号：US08809836B2

公开(公告)日：2014-08-19

申请号：US13758974

申请日：2013-02-04

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： H01L29/66

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：US20140061589A1

公开(公告)日：2014-03-06

申请号：US14057204

申请日：2013-10-18

申请人： Ravi Pillarisetty ,  Been-Yin Jin ,  Benjamin Chu-Kung ,  Matthew V. Metz ,  Jack T. Kavalieros ,  Marko Radosavljevic ,  Roza Kotlyar ,  Willy Rachmady ,  Niloy Mukherjee ,  Gilbert Dewey ,  Robert S. Chau

发明人： Ravi Pillarisetty ,  Been-Yin Jin ,  Benjamin Chu-Kung ,  Matthew V. Metz ,  Jack T. Kavalieros ,  Marko Radosavljevic ,  Roza Kotlyar ,  Willy Rachmady ,  Niloy Mukherjee ,  Gilbert Dewey ,  Robert S. Chau

IPC分类号： H01L29/775

CPC分类号： H01L27/092 ,  H01L21/02532 ,  H01L21/02546 ,  H01L21/283 ,  H01L27/088 ,  H01L29/0653 ,  H01L29/155 ,  H01L29/165 ,  H01L29/267 ,  H01L29/517 ,  H01L29/66431 ,  H01L29/66522 ,  H01L29/66553 ,  H01L29/775 ,  H01L29/7782

摘要： A quantum well transistor has a germanium quantum well channel region. A silicon-containing etch stop layer provides easy placement of a gate dielectric close to the channel. A group III-V barrier layer adds strain to the channel. Graded silicon germanium layers above and below the channel region improve performance. Multiple gate dielectric materials allow use of a high-k value gate dielectric.

摘要翻译： 量子阱晶体管具有锗量子阱沟道区域。 含硅蚀刻停止层提供了靠近通道的栅电介质的容易放置。 III-V族阻挡层增加了通道的应变。 通道区域上方和下方的分级硅锗层提高性能。 多栅极电介质材料允许使用高k值栅极电介质。

公开(公告)号：US08575596B2

公开(公告)日：2013-11-05

申请号：US13647952

申请日：2012-10-09

申请人： Ravi Pillarisetty ,  Jack T. Kavalieros ,  Willy Rachmady ,  Uday Shah ,  Benjamin Chu-Kung ,  Marko Radosavljevic ,  Niloy Mukherjee ,  Gilbert Dewey ,  Been Y. Jin ,  Robert S. Chau

发明人： Ravi Pillarisetty ,  Jack T. Kavalieros ,  Willy Rachmady ,  Uday Shah ,  Benjamin Chu-Kung ,  Marko Radosavljevic ,  Niloy Mukherjee ,  Gilbert Dewey ,  Been Y. Jin ,  Robert S. Chau

IPC分类号： H01L31/00

CPC分类号： H01L29/775 ,  B82Y10/00 ,  H01L21/76 ,  H01L29/0653 ,  H01L29/1054 ,  H01L29/155 ,  H01L29/165 ,  H01L29/267 ,  H01L29/517 ,  H01L29/66431 ,  H01L29/66439 ,  H01L29/66477 ,  H01L29/66795 ,  H01L29/66977 ,  H01L29/7782 ,  H01L29/7849 ,  H01L29/785 ,  H01L29/7851

摘要： Techniques are disclosed for forming a non-planar germanium quantum well structure. In particular, the quantum well structure can be implemented with group IV or III-V semiconductor materials and includes a germanium fin structure. In one example case, a non-planar quantum well device is provided, which includes a quantum well structure having a substrate (e.g. SiGe or GaAs buffer on silicon), a IV or III-V material barrier layer (e.g., SiGe or GaAs or AlGaAs), a doping layer (e.g., delta/modulation doped), and an undoped germanium quantum well layer. An undoped germanium fin structure is formed in the quantum well structure, and a top barrier layer deposited over the fin structure. A gate metal can be deposited across the fin structure. Drain/source regions can be formed at respective ends of the fin structure.

摘要翻译： 公开了用于形成非平面锗量子阱结构的技术。 特别地，量子阱结构可以用IV或III-V族半导体材料实现，并且包括锗鳍结构。 在一个示例性情况下，提供了非平面量子阱器件，其包括具有衬底（例如硅上的SiGe或GaAs缓冲器），IV或III-V材料阻挡层（例如，SiGe或GaAs或 AlGaAs），掺杂层（例如，掺杂Δ/调制）和未掺杂的锗量子阱层。 在量子阱结构中形成未掺杂的锗鳍结构，以及沉积在鳍结构上的顶部势垒层。 栅极金属可以跨鳍片结构沉积。 排水/源极区域可以形成在翅片结构的相应端部处。