公开(公告)号：US10483282B2

公开(公告)日：2019-11-19

申请号：US16267151

申请日：2019-02-04

Applicant: Applied Materials, Inc.

Inventor： Michael Wenyoung Tsiang ,  Praket P. Jha ,  Xinhai Han ,  Bok Hoen Kim ,  Sang Hyuk Kim ,  Myung Hun Ju ,  Hyung Jin Park ,  Ryeun Kwan Kim ,  Jin Chul Son ,  Saiprasanna Gnanavelu ,  Mayur G. Kulkarni ,  Sanjeev Baluja ,  Majid K. Shahreza ,  Jason K. Foster

IPC: H01L21/02 ,  C23C16/02 ,  C23C16/505 ,  C23C16/52 ,  C23C16/40 ,  H01L27/11582 ,  H01L29/06 ,  H01L21/3115 ,  H01L27/11556 ,  H01L27/11575 ,  H01L27/11548 ,  H01L21/768 ,  C23C16/455 ,  H01L21/311 ,  H01L21/3105

Abstract: Embodiments of the present disclosure generally relate to an improved method for forming a dielectric film stack used for inter-level dielectric (ILD) layers in a 3D NAND structure. In one embodiment, the method comprises providing a substrate having a gate stack deposited thereon, forming on exposed surfaces of the gate stack a first oxide layer using a first RF power and a first process gas comprising a TEOS gas and a first oxygen-containing gas, and forming over the first oxide layer a second oxide layer using a second RF power and a second process gas comprising a silane gas and a second oxygen-containing gas.

公开(公告)号：US11365476B2

公开(公告)日：2022-06-21

申请号：US16269337

申请日：2019-02-06

Applicant: Applied Materials, Inc.

Inventor： Praket P. Jha ,  Allen Ko ,  Xinhai Han ,  Thomas Jongwan Kwon ,  Bok Hoen Kim ,  Byung Ho Kil ,  Ryeun Kim ,  Sang Hyuk Kim

IPC: H01L27/11556 ,  C23C16/34 ,  H01L21/02 ,  C23C16/40 ,  C23C16/455 ,  H01L21/311 ,  H01L27/11582

Abstract: The present disclosure generally relate to thin films incorporating high aspect ratio feature definitions and methods for forming the same. As gate height increases, 3D NAND gate stacks are subject to higher aspect ratio etching. Due to the current limitations of etching techniques, the vertical etch profile typically tapers as the depth into the gate stack increases. The inventors have devised a unique deposition scheme that compensates for etch performance degradation in deep trenches by a novel plasma-enhanced chemical vapor deposition (PECVD) film deposition method. The inventors have found that by grading various properties (e.g., refractive index, stress of the film, dopant concentration in the film) of the as-deposited films (e.g., silicon nitride) a more uniform etch profile can be achieved by compensating for variations in both dry and wet etch rates.

公开(公告)号：US20140199850A1

公开(公告)日：2014-07-17

申请号：US13839948

申请日：2013-03-15

Applicant: APPLIED MATERIALS, INC.

Inventor： Sang Hyuk Kim ,  Dongqing Yang ,  Young S. Lee ,  Weon Young Jung ,  Sang-jin Kim ,  Ching-Mei Hsu ,  Anchuan Wang ,  Nitin K. Ingle

IPC: H01L21/311

CPC classification number: H01L21/3065 ,  C23C16/0245 ,  H01J37/32357 ,  H01J2237/334 ,  H01L21/02046 ,  H01L21/02068 ,  H01L21/31116 ,  H01L21/31122 ,  H01L21/32135 ,  H01L21/32136 ,  H01L21/76814

Abstract: Methods of selectively etching tungsten oxide relative to tungsten, silicon oxide, silicon nitride and/or titanium nitride are described. The methods include a remote plasma etch formed from a fluorine-containing precursor and/or hydrogen (H2). Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents react with the tungsten oxide. The plasmas effluents react with exposed surfaces and selectively remove tungsten oxide while very slowly removing other exposed materials. In some embodiments, the tungsten oxide selectivity results partly from the presence of an ion suppression element positioned between the remote plasma and the substrate processing region. The ion suppression element reduces or substantially eliminates the number of ionically-charged species that reach the substrate.

Abstract translation: 描述了相对于钨，氧化硅，氮化硅和/或氮化钛选择性地蚀刻氧化钨的方法。 这些方法包括由含氟前体和/或氢（H 2）形成的远程等离子体蚀刻。 来自远程等离子体的等离子体流出物流入基板处理区域，其中等离子体流出物与氧化钨反应。 等离子体流出物与暴露的表面反应并选择性地去除氧化钨，同时非常缓慢地除去其它暴露的材料。 在一些实施方案中，氧化钨选择性部分地来自位于远程等离子体和基板处理区域之间的离子抑制元件的存在。 离子抑制元件减少或基本消除了到达衬底的离子充电物质的数量。

公开(公告)号：US10246772B2

公开(公告)日：2019-04-02

申请号：US15063569

申请日：2016-03-08

Applicant: Applied Materials, Inc.

Inventor： Praket P. Jha ,  Allen Ko ,  Xinhai Han ,  Thomas Jongwan Kwon ,  Bok Hoen Kim ,  Byung Ho Kil ,  Ryeun Kim ,  Sang Hyuk Kim

IPC: C23C16/34 ,  C23C16/40 ,  H05H1/24 ,  H01L21/02 ,  C23C16/455 ,  H01L21/311 ,  H01L27/11556 ,  H01L27/11582

Abstract: A method for forming a high aspect ratio feature is disclosed. The method includes depositing one or more silicon oxide/silicon nitride containing stacks on a substrate by depositing a first film layer on the substrate from a first plasma and depositing a second film layer having a refractive index on the first film layer from a second plasma. A predetermined number of first film layers and second film layers are deposited on the substrate. The first film layer and the second film layer are either a silicon oxide layer or a silicon nitride layer and the first film layer is different from the second film layer. The method further includes depositing a third film layer from a third plasma and depositing a fourth film layer on the third film layer from a fourth plasma. The fourth film layer has a refractive index greater than the first refractive index.

公开(公告)号：US20150311089A1

公开(公告)日：2015-10-29

申请号：US14746655

申请日：2015-06-22

Applicant: Applied Materials, Inc.

Inventor： Sang Hyuk Kim ,  Dongqing Yang ,  Young S. Lee ,  Weon Young Jung ,  Sang-jin Kim ,  Ching-Mei Hsu ,  Anchuan Wang ,  Nitin K. Ingle

IPC: H01L21/311

CPC classification number: H01L21/3065 ,  C23C16/0245 ,  H01J37/32357 ,  H01J2237/334 ,  H01L21/02046 ,  H01L21/02068 ,  H01L21/31116 ,  H01L21/31122 ,  H01L21/32135 ,  H01L21/32136 ,  H01L21/76814

Abstract: Methods of selectively etching tungsten oxide relative to tungsten, silicon oxide, silicon nitride and/or titanium nitride are described. The methods include a remote plasma etch formed from a fluorine-containing precursor and/or hydrogen (H2). Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents react with the tungsten oxide. The plasmas effluents react with exposed surfaces and selectively remove tungsten oxide while very slowly removing other exposed materials. In some embodiments, the tungsten oxide selectivity results partly from the presence of an ion suppression element positioned between the remote plasma and the substrate processing region. The ion suppression element reduces or substantially eliminates the number of ionically-charged species that reach the substrate.

Abstract translation: 描述了相对于钨，氧化硅，氮化硅和/或氮化钛选择性地蚀刻氧化钨的方法。 这些方法包括由含氟前体和/或氢（H 2）形成的远程等离子体蚀刻。 来自远程等离子体的等离子体流出物流入基板处理区域，其中等离子体流出物与氧化钨反应。 等离子体流出物与暴露的表面反应并选择性地去除氧化钨，同时非常缓慢地除去其它暴露的材料。 在一些实施方案中，氧化钨选择性部分地来自位于远程等离子体和基板处理区域之间的离子抑制元件的存在。 离子抑制元件减少或基本消除了到达衬底的离子充电物质的数量。

公开(公告)号：US10199388B2

公开(公告)日：2019-02-05

申请号：US15214104

申请日：2016-07-19

Applicant: Applied Materials, Inc.

Inventor： Michael Wenyoung Tsiang ,  Praket P. Jha ,  Xinhai Han ,  Bok Hoen Kim ,  Sang Hyuk Kim ,  Myung Hun Ju ,  Hyung Jin Park ,  Ryeun Kwan Kim ,  Jin Chul Son ,  Saiprasanna Gnanavelu ,  Mayur G. Kulkarni ,  Sanjeev Baluja ,  Majid K. Shahreza ,  Jason K. Foster

IPC: H01L21/02 ,  C23C16/02 ,  C23C16/40 ,  C23C16/455 ,  C23C16/505 ,  C23C16/52 ,  H01L27/11582 ,  H01L27/11556 ,  H01L21/3115 ,  H01L29/06 ,  H01L21/768 ,  H01L27/11548 ,  H01L27/11575 ,  H01L21/3105 ,  H01L21/311

Abstract: Embodiments of the present disclosure generally relate to an improved method for forming a dielectric film stack used for inter-level dielectric (ILD) layers in a 3D NAND structure. In one embodiment, the method comprises providing a substrate having a gate stack deposited thereon, forming on exposed surfaces of the gate stack a first oxide layer using a first RF power and a first process gas comprising a TEOS gas and a first oxygen-containing gas, and forming over the first oxide layer a second oxide layer using a second RF power and a second process gas comprising a silane gas and a second oxygen-containing gas.

公开(公告)号：US09064816B2

公开(公告)日：2015-06-23

申请号：US13839948

申请日：2013-03-15

Applicant: Applied Materials, Inc.

Inventor： Sang Hyuk Kim ,  Dongqing Yang ,  Young S. Lee ,  Weon Young Jung ,  Sang-jin Kim ,  Ching-Mei Hsu ,  Anchuan Wang ,  Nitin K. Ingle

IPC: B44C1/22 ,  H01L21/311 ,  H01L21/02 ,  H01J37/32

CPC classification number: H01L21/3065 ,  C23C16/0245 ,  H01J37/32357 ,  H01J2237/334 ,  H01L21/02046 ,  H01L21/02068 ,  H01L21/31116 ,  H01L21/31122 ,  H01L21/32135 ,  H01L21/32136 ,  H01L21/76814

Abstract: Methods of selectively etching tungsten oxide relative to tungsten, silicon oxide, silicon nitride and/or titanium nitride are described. The methods include a remote plasma etch formed from a fluorine-containing precursor and/or hydrogen (H2). Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents react with the tungsten oxide. The plasmas effluents react with exposed surfaces and selectively remove tungsten oxide while very slowly removing other exposed materials. In some embodiments, the tungsten oxide selectivity results partly from the presence of an ion suppression element positioned between the remote plasma and the substrate processing region. The ion suppression element reduces or substantially eliminates the number of ionically-charged species that reach the substrate.

Abstract translation: 描述了相对于钨，氧化硅，氮化硅和/或氮化钛选择性地蚀刻氧化钨的方法。 这些方法包括由含氟前体和/或氢（H 2）形成的远程等离子体蚀刻。 来自远程等离子体的等离子体流出物流入基板处理区域，其中等离子体流出物与氧化钨反应。 等离子体流出物与暴露的表面反应并选择性地去除氧化钨，同时非常缓慢地除去其它暴露的材料。 在一些实施方案中，氧化钨选择性部分地来自位于远程等离子体和基板处理区域之间的离子抑制元件的存在。 离子抑制元件减少或基本消除了到达衬底的离子充电物质的数量。