公开(公告)号：US11087989B1

公开(公告)日：2021-08-10

申请号：US16905246

申请日：2020-06-18

Applicant: Applied Materials, Inc.

Inventor： Alvaro Garcia De Gorordo ,  Zhonghua Yao ,  Sunil Srinivasan ,  Sang Wook Park

IPC: H01L21/3065 ,  H01L21/02 ,  H01L21/311

Abstract: A method for etching silicon at cryogenic temperatures is provided. The method includes forming an inert layer from condensation of a noble gas at cryogenic temperatures on exposed surfaces such as the sidewalls of a feature to passivate the sidewalls prior to the etching process. The method further includes flowing a fluorine-containing precursor gas into the chamber to form a fluorine-containing layer on the inert layer. The method further includes exposing the fluorine-containing layer and the inert layer to an energy source to form a passivation layer on the exposed portions of the substrate and exposing the substrate to ions to etch the substrate.

公开(公告)号：US11515166B2

公开(公告)日：2022-11-29

申请号：US17371176

申请日：2021-07-09

Applicant: Applied Materials, Inc.

Inventor： Alvaro Garcia De Gorordo ,  Zhonghua Yao ,  Sunil Srinivasan ,  Sang Wook Park

IPC: H01L21/306 ,  H01L21/3065 ,  H01L21/02 ,  H01L21/311

Abstract: A method for etching silicon at cryogenic temperatures is provided. The method includes forming an inert layer from condensation of a noble gas at cryogenic temperatures on exposed surfaces such as the sidewalls of a feature to passivate the sidewalls prior to the etching process. The method further includes flowing a fluorine-containing precursor gas into the chamber to form a fluorine-containing layer on the inert layer. The method further includes exposing the fluorine-containing layer and the inert layer to an energy source to form a passivation layer on the exposed portions of the substrate and exposing the substrate to ions to etch the substrate.

公开(公告)号：US10553425B2

公开(公告)日：2020-02-04

申请号：US15714162

申请日：2017-09-25

Applicant: Applied Materials, Inc. ,  The Regents of the University of California

Inventor： Jessica S. Kachian ,  Naomi Yoshida ,  Mei Chang ,  Mary Edmonds ,  Andrew C. Kummel ,  Sang Wook Park ,  Hyunwoong Kim

IPC: H01L21/02

Abstract: Embodiments described herein provide a self-limiting and saturating Si—Ox bilayer process which does not require the use of a plasma or catalyst and that does not lead to undesirable substrate oxidation. Methods of the disclosure do not produce SiO2, but instead produce a saturated Si—Ox film with —OH termination to make substrate surfaces highly reactive towards metal ALD precursors to seed high nucleation and growth of gate oxide ALD materials.

公开(公告)号：US09773663B2

公开(公告)日：2017-09-26

申请号：US15230218

申请日：2016-08-05

Applicant: Applied Materials, Inc. ,  The Regents of the University of California

Inventor： Jessica S. Kachian ,  Naomi Yoshida ,  Mei Chang ,  Mary Edmonds ,  Andrew C. Kummel ,  Sang Wook Park ,  Hyunwoong Kim

IPC: H01L21/02

CPC classification number: H01L21/0228 ,  H01L21/02164 ,  H01L21/0217 ,  H01L21/02178 ,  H01L21/022 ,  H01L21/02205 ,  H01L21/02211 ,  H01L21/02271 ,  H01L21/02299 ,  H01L21/02301 ,  H01L21/02304

Abstract: Embodiments described herein provide a self-limiting and saturating Si—Ox bilayer process which does not require the use of a plasma or catalyst and that does not lead to undesirable substrate oxidation. Methods of the disclosure do not produce SiO2, but instead produce a saturated Si—Ox film with —OH termination to make substrate surfaces highly reactive towards metal ALD precursors to seed high nucleation and growth of gate oxide ALD materials.

公开(公告)号：US11996294B2

公开(公告)日：2024-05-28

申请号：US17983560

申请日：2022-11-09

Applicant: Applied Materials, Inc.

Inventor： Alvaro Garcia De Gorordo ,  Zhonghua Yao ,  Sunil Srinivasan ,  Sang Wook Park

IPC: H01L21/306 ,  H01L21/02 ,  H01L21/3065 ,  H01L21/311

CPC classification number: H01L21/3065 ,  H01L21/02112 ,  H01L21/02263 ,  H01L21/0234 ,  H01L21/02348 ,  B81C2201/0138 ,  H01L21/0228 ,  H01L21/30655 ,  H01L21/31116

Abstract: The present disclosure generally relates to substrate processing methods, such as etching methods with noble gases at low temperatures. In an aspect, the method includes exposing a substrate, a first layer comprising a gas, and a fluorine-containing layer to energy to form a passivation layer while maintaining the substrate at conditions encompassing a triple point temperature of the gas, the substrate positioned in a processing region of a processing chamber. The method further includes etching the substrate with ions.

公开(公告)号：US11521849B2

公开(公告)日：2022-12-06

申请号：US16391219

申请日：2019-04-22

Applicant: Applied Materials, Inc.

Inventor： Sang Wook Park ,  Sunil Srinivasan ,  Rajinder Dhindsa ,  Jonathan Sungehul Kim ,  Lin Yu ,  Zhonghua Yao ,  Olivier Luere

IPC: H01L21/02 ,  H01L21/033 ,  C23C16/455 ,  C23C16/40 ,  C23C16/34

Abstract: Embodiments of the present disclosure provide methods and apparatus for forming a desired material layer on a substrate between, during, prior to or after a patterning process. In one embodiment, a method for forming a material layer on a substrate includes pulsing a first gas precursor onto a surface of a substrate, attaching a first element from the first gas precursor onto the surface of the substrate, maintaining a substrate temperature less than about 110 degrees Celsius, pulsing a second gas precursor onto the surface of the substrate, and attaching a second element from the second gas precursor to the first element on the surface of the substrate.