公开(公告)号：US09748386B2

公开(公告)日：2017-08-29

申请号：US14922215

申请日：2015-10-26

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： I-cheng Hu ,  Tien-I Wu ,  Chun-Jen Chen ,  Yu-Shu Lin ,  Neng-Hui Yang

IPC: H01L29/66 ,  H01L29/78 ,  H01L29/161 ,  H01L29/165 ,  H01L29/08 ,  H01L21/02

CPC classification number: H01L29/7848 ,  H01L21/0243 ,  H01L21/0245 ,  H01L21/02502 ,  H01L21/02532 ,  H01L21/0262 ,  H01L21/02639 ,  H01L29/0847 ,  H01L29/161 ,  H01L29/165 ,  H01L29/66628 ,  H01L29/66636

Abstract: An epitaxial structure of semiconductor device includes a substrate, a recess, a first epitaxial layer, a second epitaxial layer, and a third epitaxial layer. The recess is formed in the substrate and disposed near a surface of the substrate, wherein the recess has a recess depth. The first epitaxial layer is disposed on surfaces of a sidewall and a bottom of the recess. The second epitaxial layer is disposed on the surface of the first epitaxial layer, wherein the Ge concentration of the second epitaxial layer is greater than the Ge concentration of the first epitaxial layer. The third epitaxial layer is disposed on the surface of the second epitaxial layer, wherein the Ge concentration of the third epitaxial layer is greater than the Ge concentration of the second epitaxial layer, and the depth of the third epitaxial layer is about ½ to about ¾ of the recess depth.

公开(公告)号：US09735235B2

公开(公告)日：2017-08-15

申请号：US15215609

申请日：2016-07-21

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Tsai-Yu Wen ,  Chin-Sheng Yang ,  Chun-Jen Chen ,  Tsuo-Wen Lu ,  Yu-Ren Wang

IPC: H01L21/02 ,  H01L29/06 ,  H01L21/306 ,  H01L29/161 ,  H01L21/316 ,  H01L29/66 ,  H01L29/775 ,  H01L29/78 ,  H01L29/165

CPC classification number: H01L29/0673 ,  H01L21/02164 ,  H01L21/02233 ,  H01L21/02236 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/0245 ,  H01L21/02452 ,  H01L21/02532 ,  H01L21/02535 ,  H01L21/02603 ,  H01L21/02612 ,  H01L21/02639 ,  H01L21/02664 ,  H01L21/30604 ,  H01L21/31658 ,  H01L29/161 ,  H01L29/165 ,  H01L29/66439 ,  H01L29/66795 ,  H01L29/775 ,  H01L29/785

Abstract: A method of forming a nanowire includes providing a substrate. The substrate is etched to form at least one fin. Subsequently, a first epitaxial layer is formed on an upper portion of the fin. Later, an undercut is formed on a middle portion the fin. A second epitaxial layer is formed to fill into the undercut. Finally, the fin, the first epitaxial layer and the second epitaxial layer are oxidized to condense the first epitaxial layer and the second epitaxial layer into a germanium-containing nanowire.

公开(公告)号：US09214551B2

公开(公告)日：2015-12-15

申请号：US14183545

申请日：2014-02-19

Applicant: United Microelectronics Corp.

Inventor： Ming-Hua Chang ,  Tien-Wei Yu ,  I-Cheng Hu ,  Chieh-Lung Wu ,  Yu-Shu Lin ,  Chun-Jen Chen ,  Tsung-Mu Yang ,  Tien-Chen Chan ,  Chin-Cheng Chien

IPC: H01L29/161 ,  H01L29/165 ,  H01L29/78 ,  H01L29/66 ,  H01L21/02 ,  H01L21/306

CPC classification number: H01L29/7848 ,  H01L21/0245 ,  H01L21/02532 ,  H01L21/02579 ,  H01L21/0262 ,  H01L21/02639 ,  H01L21/30604 ,  H01L29/045 ,  H01L29/0847 ,  H01L29/161 ,  H01L29/165 ,  H01L29/66477 ,  H01L29/66636 ,  H01L29/7834

Abstract: A method for fabricating a semiconductor device, and a semiconductor device made with the method are described. In the method, a cavity is formed in a substrate, a first epitaxy process is performed under a pressure higher than 65 torr to form a buffer layer in the cavity, and a second epitaxy process is performed to form a semiconductor compound layer on the buffer layer in the cavity. In the semiconductor device, the ratio (S/Y) of the thickness S of the buffer layer on a lower sidewall of the cavity to the thickness Y of the buffer layer at the bottom of the cavity ranges from 0.6 to 0.8.

Abstract translation: 描述了一种用于制造半导体器件的方法，以及用该方法制造的半导体器件。 在该方法中，在衬底中形成腔体，在高于65托的压力下进行第一外延工艺，以在空腔中形成缓冲层，并且进行第二外延工艺以在缓冲器上形成半导体化合物层 在空腔中的层。 在半导体装置中，空腔下侧的缓冲层的厚度S与空腔底部的缓冲层的厚度Y的比值（S / Y）为0.6〜0.8。

公开(公告)号：US20150236158A1

公开(公告)日：2015-08-20

申请号：US14183545

申请日：2014-02-19

Applicant: United Microelectronics Corp.

Inventor： Ming-Hua Chang ,  Tien-Wei Yu ,  I-Cheng Hu ,  Chieh-Lung Wu ,  Yu-Shu Lin ,  Chun-Jen Chen ,  Tsung-Mu Yang ,  Tien-Chen Chan ,  Chin-Cheng Chien

IPC: H01L29/78 ,  H01L21/306 ,  H01L29/66 ,  H01L21/02 ,  H01L29/161 ,  H01L29/165

CPC classification number: H01L29/7848 ,  H01L21/0245 ,  H01L21/02532 ,  H01L21/02579 ,  H01L21/0262 ,  H01L21/02639 ,  H01L21/30604 ,  H01L29/045 ,  H01L29/0847 ,  H01L29/161 ,  H01L29/165 ,  H01L29/66477 ,  H01L29/66636 ,  H01L29/7834

Abstract: A method for fabricating a semiconductor device, and a semiconductor device made with the method are described. In the method, a cavity is formed in a substrate, a first epitaxy process is performed under a pressure higher than 65 torr to form a buffer layer in the cavity, and a second epitaxy process is performed to form a semiconductor compound layer on the buffer layer in the cavity. In the semiconductor device, the ratio (S/Y) of the thickness S of the buffer layer on a lower sidewall of the cavity to the thickness Y of the buffer layer at the bottom of the cavity ranges from 0.6 to 0.8.

Abstract translation: 描述了一种用于制造半导体器件的方法，以及用该方法制造的半导体器件。 在该方法中，在衬底中形成腔体，在高于65托的压力下进行第一外延工艺，以在空腔中形成缓冲层，并且进行第二外延工艺以在缓冲器上形成半导体化合物层 在空腔中的层。 在半导体装置中，空腔下侧的缓冲层的厚度S与空腔底部的缓冲层的厚度Y的比值（S / Y）为0.6〜0.8。

公开(公告)号：US11769833B2

公开(公告)日：2023-09-26

申请号：US17956840

申请日：2022-09-30

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chi-Hsuan Tang ,  Chung-Ting Huang ,  Bo-Shiun Chen ,  Chun-Jen Chen ,  Yu-Shu Lin

IPC: H01L29/78 ,  H01L29/66 ,  H01L21/02 ,  H01L29/06

CPC classification number: H01L29/7848 ,  H01L21/0245 ,  H01L29/0657 ,  H01L29/6656 ,  H01L29/66553

Abstract: A method for fabricating a semiconductor device includes the steps of forming a gate structure on a substrate, forming an epitaxial layer adjacent to the gate structure, and then forming a first cap layer on the epitaxial layer. Preferably, a top surface of the first cap layer includes a curve concave upward and a bottom surface of the first cap layer includes a planar surface higher than a top surface of the substrate.

公开(公告)号：US11545560B2

公开(公告)日：2023-01-03

申请号：US17160421

申请日：2021-01-28

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Wei-Chih Chuang ,  Chia-Jong Liu ,  Kuang-Hsiu Chen ,  Chung-Ting Huang ,  Chi-Hsuan Tang ,  Kai-Hsiang Wang ,  Bing-Yang Jiang ,  Yu-Lin Cheng ,  Chun-Jen Chen ,  Yu-Shu Lin ,  Jhong-Yi Huang ,  Chao-Nan Chen ,  Guan-Ying Wu

IPC: H01L29/66 ,  H01L29/423

Abstract: A method for fabricating semiconductor device includes the steps of: forming a gate structure on a substrate; forming a first spacer and a second spacer around the gate structure; forming a recess adjacent to two sides of the second spacer; performing a cleaning process to trim the second spacer for forming a void between the first spacer and the substrate; and forming an epitaxial layer in the recess.

公开(公告)号：US11495686B2

公开(公告)日：2022-11-08

申请号：US17147468

申请日：2021-01-13

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chi-Hsuan Tang ,  Chung-Ting Huang ,  Bo-Shiun Chen ,  Chun-Jen Chen ,  Yu-Shu Lin

IPC: H01L29/78 ,  H01L29/66 ,  H01L29/06 ,  H01L21/02

Abstract: A method for fabricating a semiconductor device includes the steps of first forming a gate structure on a substrate, forming a first spacer adjacent to the gate structure, forming a second spacer adjacent to the first spacer, forming an epitaxial layer adjacent to the second spacer, forming a second cap layer on the epitaxial layer, and then forming a first cap layer on the second cap layer. Preferably, a top surface of the first cap layer includes a V-shape and the first cap layer and the second cap layer are made of different materials.

公开(公告)号：US20210057579A1

公开(公告)日：2021-02-25

申请号：US16572568

申请日：2019-09-16

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Bo-Shiun Chen ,  Chun-Jen Chen ,  Chung-Ting Huang ,  Chi-Hsuan Tang ,  Jhong-Yi Huang ,  Guan-Ying Wu

IPC: H01L29/78 ,  H01L29/08 ,  H01L29/15 ,  H01L29/66 ,  H01L21/02

Abstract: A transistor with strained superlattices as source/drain regions includes a substrate. A gate structure is disposed on the substrate. Two superlattices are respectively disposed at two sides of the gate structure and embedded in the substrate. The superlattices are strained. Each of the superlattices is formed by a repeated alternating stacked structure including a first epitaxial silicon germanium and a second epitaxial silicon germanium. The superlattices serve as source/drain regions of the transistor.

公开(公告)号：US10366991B1

公开(公告)日：2019-07-30

申请号：US15880492

申请日：2018-01-25

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Hsu Ting ,  Yu-Ying Lin ,  Yen-Hsing Chen ,  Chun-Jen Chen ,  Chun-Wei Yu ,  Keng-Jen Lin ,  Yu-Ren Wang

IPC: H01L27/088 ,  H01L29/66 ,  H01L21/8234 ,  H01L29/06

Abstract: A semiconductor device includes a semiconductor substrate, an isolation structure, a cladding layer, and a gate structure. The semiconductor substrate includes fin shaped structures. The isolation structure is disposed between the fin shaped structures. Each of the fin shaped structures includes a first portion disposed above a top surface of the isolation structure and a second portion disposed on the first portion. A width of the second portion is smaller than a width of the first portion. The cladding layer is disposed on the first portion and the second portion of each of the fin shaped structures. The cladding layer includes a curved surface. The gate structure is disposed straddling the fin shaped structures.

公开(公告)号：US20190214306A1

公开(公告)日：2019-07-11

申请号：US15885834

申请日：2018-02-01

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chun-Jen Chen ,  Tien-I Wu ,  Yu-Shu Lin

IPC: H01L21/8234 ,  H01L21/324 ,  H01L27/088 ,  H01L29/06 ,  H01L29/78 ,  H01L29/10

Abstract: A method for fabricating semiconductor device includes the steps of: providing a substrate having a first region and a second region; forming a first fin-shaped structure on the first region and a second fin-shaped structure on the second region; forming a shallow trench isolation (STI) around the first fin-shaped structure and the second fin-shaped structure; forming a mask layer on the first fin-shaped structure; and performing a first anneal process so that the first fin-shaped structure and the second fin-shaped structure comprise different radius of curvature.