公开(公告)号：US10050015B2

公开(公告)日：2018-08-14

申请号：US15121759

申请日：2014-03-27

Applicant: Ravi Pillarisetty ,  Sansaptak Dasgupta ,  Niloy Mukherjee ,  Brian S. Doyle ,  Marko Radosavljevic ,  Han Wui Then

Inventor： Ravi Pillarisetty ,  Sansaptak Dasgupta ,  Niloy Mukherjee ,  Brian S. Doyle ,  Marko Radosavljevic ,  Han Wui Then

IPC: H01L29/10 ,  H01L29/12 ,  H01L25/065 ,  H01L25/00 ,  H01L29/20 ,  H01L29/24 ,  G06F1/16 ,  G09F9/30 ,  G09G3/36 ,  H01L21/8258 ,  H01L23/14 ,  H01L23/15 ,  H01L23/498 ,  H01L21/822 ,  H01L27/06

Abstract: Embodiments of the present disclosure describe multi-device flexible systems on a chip (SOCs) and methods for making such SOCs. A multi-material stack may be processed sequentially to form multiple integrated circuit (IC) devices in a single flexible SOC. By forming the IC devices from a single stack, it is possible to form contacts for multiple devices through a single metallization process and for those contacts to be located in a common back-plane of the SOC. Stack layers may be ordered and processed according to processing temperature, such that higher temperature processes are performed earlier. In this manner, intervening layers of the stack may shield some stack layers from elevated processing temperatures associated with processing upper layers of the stack. Other embodiments may be described and/or claimed.

公开(公告)号：US09064709B2

公开(公告)日：2015-06-23

申请号：US13631569

申请日：2012-09-28

Applicant: Han Wui Then ,  Sansaptak Dasgupta ,  Gerhard Schrom ,  Valluri R. Rao ,  Robert S. Chau

Inventor： Han Wui Then ,  Sansaptak Dasgupta ,  Gerhard Schrom ,  Valluri R. Rao ,  Robert S. Chau

IPC: H01L27/06 ,  H01L29/93 ,  H01L29/66 ,  H01L29/94 ,  H01L27/08 ,  H01L29/06 ,  H01L29/205 ,  H01L29/04 ,  H01L29/20

CPC classification number: H01L27/0605 ,  H01L27/0805 ,  H01L29/045 ,  H01L29/0657 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/66181 ,  H01L29/93 ,  H01L29/94

Abstract: III-N high voltage MOS capacitors and System on Chip (SoC) solutions integrating at least one III-N MOS capacitor capable of high breakdown voltages (BV) to implement high voltage and/or high power circuits. Breakdown voltages over 4V may be achieved avoiding any need to series couple capacitors in an RFIC and/or PMIC. In embodiments, depletion mode III-N capacitors including a GaN layer in which a two dimensional electron gas (2DEG) is formed at threshold voltages below 0V are monolithically integrated with group IV transistor architectures, such as planar and non-planar silicon CMOS transistor technologies. In embodiments, silicon substrates are etched to provide a (111) epitaxial growth surface over which a GaN layer and III-N barrier layer are formed. In embodiments, a high-K dielectric layer is deposited, and capacitor terminal contacts are made to the 2DEG and over the dielectric layer.

Abstract translation: 集成了至少一个具有高击穿电压（BV）的III-N MOS电容器的III-N高压MOS电容器和片上系统（SoC）解决方案，以实现高压和/或高功率电路。 可以实现超过4V的击穿电压，避免了RFIC和/或PMIC中的串联耦合电容的任何需要。 在实施例中，包括其中在低于0V的阈值电压下形成二维电子气（2DEG）的GaN层的耗尽型III-N电容器与IV族晶体管架构单片集成，例如平面和非平面硅CMOS晶体管技术 。 在实施例中，蚀刻硅衬底以提供形成GaN层和III-N势垒层的（111）外延生长表面。 在实施例中，沉积高K电介质层，并且电容器端子触点被制成2DEG并且在电介质层上。

公开(公告)号：US20140175512A1

公开(公告)日：2014-06-26

申请号：US13722824

申请日：2012-12-20

Applicant: BENJAMIN CHU-KUNG ,  VAN LE ,  ROBERT CHAU ,  SANSAPTAK DASGUPTA ,  GILBERT DEWEY ,  NITI GOEL ,  JACK KAVALIEROS ,  MATTHEW METZ ,  NILOY MUKHERJEE ,  RAVI PILLARISETTY ,  WILLY RACHMADY ,  MARKO RADOSAVLJEVIC ,  HAN WUI THEN ,  NANCY ZELICK

Inventor： BENJAMIN CHU-KUNG ,  VAN LE ,  ROBERT CHAU ,  SANSAPTAK DASGUPTA ,  GILBERT DEWEY ,  NITI GOEL ,  JACK KAVALIEROS ,  MATTHEW METZ ,  NILOY MUKHERJEE ,  RAVI PILLARISETTY ,  WILLY RACHMADY ,  MARKO RADOSAVLJEVIC ,  HAN WUI THEN ,  NANCY ZELICK

IPC: H01L29/78

CPC classification number: H01L21/823821 ,  H01L27/0924 ,  H01L29/1054 ,  H01L29/165 ,  H01L29/785

Abstract: An embodiment uses a very thin layer nanostructure (e.g., a Si or SiGe fin) as a template to grow a crystalline, non-lattice matched, epitaxial (EPI) layer. In one embodiment the volume ratio between the nanostructure and EPI layer is such that the EPI layer is thicker than the nanostructure. In some embodiments a very thin bridge layer is included between the nanostructure and EPI. An embodiment includes a CMOS device where EPI layers covering fins (or that once covered fins) are oppositely polarized from one another. An embodiment includes a CMOS device where an EPI layer covering a fin (or that once covered a fin) is oppositely polarized from a bridge layer covering a fin (or that once covered a fin). Thus, various embodiments are disclosed from transferring defects from an EPI layer to a nanostructure (that is left present or removed). Other embodiments are described herein.

Abstract translation: 一个实施例使用非常薄的层纳米结构（例如，Si或SiGe鳍）作为模板来生长晶体，非晶格匹配的外延（EPI）层。 在一个实施方案中，纳米结构和EPI层之间的体积比使得EPI层比纳米结构厚。 在一些实施例中，在纳米结构和EPI之间包括非常薄的桥接层。 一个实施例包括一个CMOS器件，其中覆盖翅片（或一旦被覆盖的翅片）的EPI层彼此相反地极化。 一个实施例包括一个CMOS器件，其中覆盖翅片（或一旦被覆盖的翅片）的EPI层与覆盖翅片（或一旦被覆盖的翅片）的桥接层相反地偏振。 因此，从EPI层转移到纳米结构（剩下的存在或去除）的缺陷中公开了各种实施例。 本文描述了其它实施例。

公开(公告)号：US20140170998A1

公开(公告)日：2014-06-19

申请号：US13720852

申请日：2012-12-19

Applicant: Han Wui THEN ,  Sansaptak DASGUPTA ,  Marko RADOSAVLJEVIC ,  Benjamin CHU-KUNG ,  Sanaz K. GARDNER ,  Seung Hoon SUNG ,  Robert S. CHAU

Inventor： Han Wui THEN ,  Sansaptak DASGUPTA ,  Marko RADOSAVLJEVIC ,  Benjamin CHU-KUNG ,  Sanaz K. GARDNER ,  Seung Hoon SUNG ,  Robert S. CHAU

IPC: H01L29/80 ,  H01L29/66 ,  H01L29/20

CPC classification number: H01L29/2003 ,  H01L21/02164 ,  H01L21/02238 ,  H01L21/02255 ,  H01L21/0228 ,  H01L21/0254 ,  H01L21/283 ,  H01L21/28575 ,  H01L21/84 ,  H01L27/1203 ,  H01L29/0649 ,  H01L29/201 ,  H01L29/42356 ,  H01L29/66462 ,  H01L29/66795 ,  H01L29/7787 ,  H01L29/78 ,  H01L29/785 ,  H01L29/7851 ,  H01L29/802

Abstract: A III-N semiconductor channel is formed on a III-N transition layer formed on a (111) or (110) surface of a silicon template structure, such as a fin sidewall. In embodiments, the silicon fin has a width comparable to the III-N epitaxial film thicknesses for a more compliant seeding layer, permitting lower defect density and/or reduced epitaxial film thickness. In embodiments, a transition layer is GaN and the semiconductor channel comprises Indium (In) to increase a conduction band offset from the silicon fin. In other embodiments, the fin is sacrificial and either removed or oxidized, or otherwise converted into a dielectric structure during transistor fabrication. In certain embodiments employing a sacrificial fin, the III-N transition layer and semiconductor channel is substantially pure GaN, permitting a breakdown voltage higher than would be sustainable in the presence of the silicon fin.

公开(公告)号：US20140094223A1

公开(公告)日：2014-04-03

申请号：US13631514

申请日：2012-09-28

Applicant: Sansaptak DASGUPTA ,  Han Wui THEN ,  Niloy MUKHERJEE ,  Marko RADOSAVLJEVIC ,  Robert S. CHAU

Inventor： Sansaptak DASGUPTA ,  Han Wui THEN ,  Niloy MUKHERJEE ,  Marko RADOSAVLJEVIC ,  Robert S. CHAU

IPC: H01L29/205 ,  H01L29/66 ,  H01L29/20

CPC classification number: H01L29/7787 ,  H01L23/535 ,  H01L29/04 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/4236 ,  H01L29/66431 ,  H01L29/66462 ,  H01L29/66545

Abstract: Embodiments include epitaxial semiconductor stacks for reduced defect densities in III-N device layers grown over non-III-N substrates, such as silicon substrates. In embodiments, a metamorphic buffer includes an AlxIn1-xN layer lattice matched to an overlying GaN device layers to reduce thermal mismatch induced defects. Such crystalline epitaxial semiconductor stacks may be device layers for HEMT or LED fabrication, for example. System on Chip (SoC) solutions integrating an RFIC with a PMIC using a transistor technology based on group III-nitrides (III-N) capable of achieving high Ft and also sufficiently high breakdown voltage (BV) to implement high voltage and/or high power circuits may be provided on the semiconductor stacks in a first area of the silicon substrate while silicon-based CMOS circuitry is provided in a second area of the substrate.

Abstract translation: 实施例包括用于在诸如硅衬底的非III-N衬底上生长的III-N器件层中的缺陷密度降低的外延半导体堆叠。 在实施例中，变质缓冲器包括与上覆GaN器件层匹配的Al x In 1-x N层晶格以减少热失配引起的缺陷。 这种结晶外延半导体叠层可以是用于例如HEMT或LED制造的器件层。 使用基于能够实现高Ft的III族氮化物（III-N）的晶体管技术并且还具有足够高的击穿电压（BV）来实现高电压和/或高电平的片上系统（SoC）解决方案集成RFIC与PMIC 电源电路可以设置在硅衬底的第一区域中的半导体堆叠上，而硅基CMOS电路设置在衬底的第二区域中。

公开(公告)号：US20200211842A1

公开(公告)日：2020-07-02

申请号：US16232535

申请日：2018-12-26

Applicant: Glenn GLASS ,  Sansaptak DASGUPTA ,  Han Wui THEN ,  Marko RADOSAVLJEVIC ,  Paul FISCHER ,  Anand MURTHY ,  Walid HAFEZ

Inventor： Glenn GLASS ,  Sansaptak DASGUPTA ,  Han Wui THEN ,  Marko RADOSAVLJEVIC ,  Paul FISCHER ,  Anand MURTHY ,  Walid HAFEZ

IPC: H01L21/02 ,  H01L29/20 ,  H01L29/205 ,  H01L29/778 ,  H01L27/092 ,  H01L23/00 ,  H01L29/66 ,  H01L21/306 ,  H01L21/8252

Abstract: An integrated circuit structure comprises a relaxed buffer stack that includes a channel region, wherein the relaxed buffer stack and the channel region include a group III-N semiconductor material, wherein the relaxed buffer stack comprises a plurality of AlGaN material layers and a buffer stack over the plurality of AlGaN material layers, wherein the buffer stack comprises the group III-N semiconductor material and has a thickness of less than approximately 25 nm. A back barrier is in the relaxed buffer stack between the plurality of AlGaN material layers and the buffer stack, wherein the back barrier comprises an AlGaN material of approximately 2-10% Al. A polarization stack over the relaxed buffer stack.

公开(公告)号：US20160204276A1

公开(公告)日：2016-07-14

申请号：US14912403

申请日：2013-09-25

Applicant: Sansaptak DASGUPTA ,  Han Wui THEN ,  Sanaz GARDNER ,  Benjamin CHU-KUNG ,  Marko RADOSAVLJEVIC ,  Seung Hoon SUNG ,  Robert CHAU

Inventor： Sansaptak DASGUPTA ,  Han Wui THEN ,  Sanaz GARDNER ,  Benjamin CHU-KUNG ,  Marko RADOSAVLJEVIC ,  Seung Hoon SUNG ,  Robert CHAU

IPC: H01L29/786 ,  H01L29/04 ,  H01L29/51 ,  H01L29/66 ,  H01L29/423 ,  H01L29/49 ,  H01L27/108 ,  H01L29/06

CPC classification number: H01L29/78696 ,  B82Y10/00 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/02433 ,  H01L21/0245 ,  H01L21/02494 ,  H01L21/02516 ,  H01L21/0254 ,  H01L27/10826 ,  H01L27/10879 ,  H01L29/045 ,  H01L29/0657 ,  H01L29/0673 ,  H01L29/0676 ,  H01L29/2003 ,  H01L29/413 ,  H01L29/42392 ,  H01L29/4908 ,  H01L29/517 ,  H01L29/66462 ,  H01L29/66742 ,  H01L29/66795 ,  H01L29/775 ,  H01L29/7786 ,  H01L29/7848 ,  H01L29/785 ,  H01L29/7853 ,  H01L29/78618 ,  H01L29/78681

Abstract: Methods of forming high voltage (111) silicon nano-structures are described. Those methods and structures may include forming a III-V device layer on (111) surface of a silicon fin structure, forming a 2DEG inducing polarization layer on the III-V device layer, forming a source/drain material on a portion of the III-V device layer on terminal ends of the silicon fin. A middle portion of the silicon fin structure between the source and drain regions may be removed, and backfilled with a dielectric material, and then a gate dielectric and a gate material may be formed on the III-V device layer.

Abstract translation: 描述了形成高电压（111）硅纳米结构的方法。 这些方法和结构可以包括在硅鳍结构的（111）表面上形成III-V器件层，在III-V器件层上形成2DEG诱导极化层，在III部分上形成源极/漏极材料 -V在硅片末端的器件层。 源极和漏极区域之间的硅鳍结构的中间部分可以被去除，并且用电介质材料回填，然后可以在III-V器件层上形成栅极电介质和栅极材料。

公开(公告)号：US08954021B2

公开(公告)日：2015-02-10

申请号：US14303513

申请日：2014-06-12

Applicant: Han Wui Then ,  Sansaptak Dasgupta ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Sanaz Gardner ,  Seung Hoon Sung ,  Robert S. Chau

Inventor： Han Wui Then ,  Sansaptak Dasgupta ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Sanaz Gardner ,  Seung Hoon Sung ,  Robert S. Chau

IPC: H04B1/04 ,  H01L29/772 ,  H01L29/20 ,  H01L29/80 ,  H01L29/66 ,  H01L29/78

CPC classification number: H01L29/2003 ,  H01L21/02164 ,  H01L21/02238 ,  H01L21/02255 ,  H01L21/0228 ,  H01L21/0254 ,  H01L21/283 ,  H01L21/28575 ,  H01L21/84 ,  H01L27/1203 ,  H01L29/0649 ,  H01L29/201 ,  H01L29/42356 ,  H01L29/66462 ,  H01L29/66795 ,  H01L29/7787 ,  H01L29/78 ,  H01L29/785 ,  H01L29/7851 ,  H01L29/802

Abstract: A III-N semiconductor channel is formed on a III-N transition layer formed on a (111) or (110) surface of a silicon template structure, such as a fin sidewall. In embodiments, the silicon fin has a width comparable to the III-N epitaxial film thicknesses for a more compliant seeding layer, permitting lower defect density and/or reduced epitaxial film thickness. In embodiments, a transition layer is GaN and the semiconductor channel comprises Indium (In) to increase a conduction band offset from the silicon fin. In other embodiments, the fin is sacrificial and either removed or oxidized, or otherwise converted into a dielectric structure during transistor fabrication. In certain embodiments employing a sacrificial fin, the III-N transition layer and semiconductor channel is substantially pure GaN, permitting a breakdown voltage higher than would be sustainable in the presence of the silicon fin.

Abstract translation: III-N半导体沟道形成在形成于诸如翅片侧壁的硅模板结构的（111）或（110）表面上的III-N过渡层上。 在实施例中，硅鳍具有与更适应的种子层的III-N外延膜厚度相当的宽度，允许更低的缺陷密度和/或降低的外延膜厚度。 在实施例中，过渡层是GaN，并且半导体沟道包括铟（In）以增加从硅片的导带偏移。 在其它实施例中，鳍是牺牲性的，并且在晶体管制造期间被去除或氧化，或以其它方式转换为电介质结构。 在采用牺牲散热片的某些实施例中，III-N过渡层和半导体通道是基本上纯的GaN，允许击穿电压高于在硅片存在时可持续的击穿电压。

公开(公告)号：US08896101B2

公开(公告)日：2014-11-25

申请号：US13725546

申请日：2012-12-21

Applicant: Han Wui Then ,  Sansaptak Dasgupta ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Seung Hoon Sung ,  Sanaz K. Gardner ,  Robert S. Chau

Inventor： Han Wui Then ,  Sansaptak Dasgupta ,  Marko Radosavljevic ,  Benjamin Chu-Kung ,  Seung Hoon Sung ,  Sanaz K. Gardner ,  Robert S. Chau

IPC: H01L29/20 ,  H01L29/772 ,  H01L29/66

CPC classification number: H01L29/78696 ,  H01L21/02387 ,  H01L21/02389 ,  H01L21/02433 ,  H01L21/02458 ,  H01L21/0251 ,  H01L21/02538 ,  H01L21/0254 ,  H01L29/045 ,  H01L29/0673 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/42392 ,  H01L29/66409 ,  H01L29/66522 ,  H01L29/66742 ,  H01L29/772 ,  H01L29/785 ,  H01L29/78681

Abstract: A III-N semiconductor channel is compositionally graded between a transition layer and a III-N polarization layer. In embodiments, a gate stack is deposited over sidewalls of a fin including the graded III-N semiconductor channel allowing for formation of a transport channel in the III-N semiconductor channel adjacent to at least both sidewall surfaces in response to a gate bias voltage. In embodiments, a gate stack is deposited completely around a nanowire including a III-N semiconductor channel compositionally graded to enable formation of a transport channel in the III-N semiconductor channel adjacent to both the polarization layer and the transition layer in response to a gate bias voltage.

Abstract translation: III-N半导体通道在过渡层和III-N偏振层之间组成分级。 在实施例中，栅堆叠沉积在包括渐变III-N半导体沟道的鳍的侧壁上，允许在响应于栅极偏置电压的至少两个侧壁表面相邻的III-N半导体沟道中形成传输沟道。 在实施例中，栅极叠层完全沉积在包括III-N半导体沟道的纳米线周围，该纳米线被组成分级，以使得能够响应于栅极形成与偏振层和过渡层两者相邻的III-N半导体沟道中的传输沟道 偏压。

公开(公告)号：US20190393092A1

公开(公告)日：2019-12-26

申请号：US16016415

申请日：2018-06-22

Applicant: Sansaptak DASGUPTA ,  Marko RADOSAVLJEVIC ,  Han Wui THEN ,  Paul FISCHER ,  Walid HAFEZ

Inventor： Sansaptak DASGUPTA ,  Marko RADOSAVLJEVIC ,  Han Wui THEN ,  Paul FISCHER ,  Walid HAFEZ

IPC: H01L21/8252 ,  H01L27/06 ,  H01L27/02

Abstract: A diode is disclosed. The diode includes a semiconductor substrate, a hard mask formed above the substrate, vertically oriented components of a first material adjacent sides of the hard mask, and laterally oriented components of the first material on top of the hard mask. The laterally oriented components are oriented in a first direction and a second direction. The diode also includes a second material on top of the first material. The second material forms a Schottky barrier.