JP7121237B2 - 閾値シフトの低減のためのシリコン窒化プロセス - Google Patents
閾値シフトの低減のためのシリコン窒化プロセス Download PDFInfo
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- JP7121237B2 JP7121237B2 JP2018567698A JP2018567698A JP7121237B2 JP 7121237 B2 JP7121237 B2 JP 7121237B2 JP 2018567698 A JP2018567698 A JP 2018567698A JP 2018567698 A JP2018567698 A JP 2018567698A JP 7121237 B2 JP7121237 B2 JP 7121237B2
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- H10D30/471—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT]
- H10D30/475—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having wider bandgap layer formed on top of lower bandgap active layer, e.g. undoped barrier HEMTs such as i-AlGaN/GaN HEMTs
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- H10D64/693—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator the insulator comprising nitrogen, e.g. nitrides, oxynitrides or nitrogen-doped materials
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- H10D62/85—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs
- H10D62/8503—Nitride Group III-V materials, e.g. AlN or GaN
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- Microelectronics & Electronic Packaging (AREA)
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- Formation Of Insulating Films (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
Claims (16)
- 方法であって、
半導体デバイスの基板を提供することであって、前記基板が半導体材料を含む、前記提供することと、
FETのための領域において前記基板の上に窒素リッチシリコン窒化物層を形成することと、
前記窒素リッチシリコン窒化物層の上にシリコン窒化物層を形成することと、
前記シリコン窒化物層の上に前記FETのゲートを形成することと、
を含み、
前記窒素リッチシリコン窒化物層が、ジクロロシランとアンモニアとを用いて第1のLPCVDチャンバにおいて低圧化学気相成長(LPCVD)プロセスにより形成される、方法。 - 請求項1に記載の方法であって、
前記シリコン窒化物層を形成することが、実質的に酸化反応物がない雰囲気で実施される、方法。 - 請求項2に記載の方法であって、
前記窒素リッチシリコン窒化物層の形成の間に、前記アンモニアが前記ジクロロシランの流量の6~12倍の流量で前記第1のLPCVDチャンバ内に流される、方法。 - 請求項2に記載の方法であって、
前記第1のLPCVDチャンバにおける前記基板の温度が、前記窒素リッチシリコン窒化物層の形成の間に600℃~740℃である、方法。 - 請求項2に記載の方法であって、
前記窒素リッチシリコン窒化物層の上にシリコン窒化物層を形成することが、前記窒素リッチシリコン窒化物層上にシリコンリッチシリコン窒化物層を形成することを含む、方法。 - 請求項5に記載の方法であって、
前記シリコンリッチシリコン窒化物層が、ジクロロシランとアンモニアとを用いて第2のLPCVDチャンバにおいてLPCVDプロセスにより形成される、方法。 - 請求項6に記載の方法であって、
前記第2のLPCVDチャンバが前記第1のLPCVDチャンバである、方法。 - 請求項6に記載の方法であって、
前記アンモニアが、前記シリコンリッチシリコン窒化物層の形成の間に前記ジクロロシランの流量の3~6倍の流量で前記第2のLPCVDチャンバ内に流される、方法。 - 請求項6に記載の方法であって、
前記第2のLPCVDチャンバにおける前記基板の温度が、前記シリコンリッチシリコン窒化物層の形成の間に780℃~900℃である、方法。 - 請求項5に記載の方法であって、
前記シリコンリッチシリコン窒化物層の厚みが5ナノメートル~20ナノメートルである、方法。 - 請求項10に記載の方法であって、
前記シリコンリッチシリコン窒化物層が化学量論のシリコン窒化物材料の屈折率より0.025~0.040大きい屈折率を有し、前記屈折率が630ナノメートル~635ナノメートルの波長で判定される、方法。 - 請求項1に記載の方法であって、
前記窒素リッチシリコン窒化物層の厚みが5ナノメートル~20ナノメートルである、方法。 - 請求項1に記載の方法であって、
前記窒素リッチシリコン窒化物層が化学量論のシリコン窒化物材料の屈折率より0.015~0.030小さい屈折率を有し、前記屈折率が630ナノメートル~635ナノメートルの波長で判定される、方法。 - 方法であって、
半導体デバイスの基板を提供することであって、前記基板が半導体材料を含む、前記提供することと、
FETのための領域において前記基板の上に窒素リッチシリコン窒化物層を形成することと、
前記窒素リッチシリコン窒化物層の上にシリコン窒化物層を形成することと、
前記シリコン窒化物層の上に前記FETのゲートを形成することと、
を含み、
前記窒素リッチシリコン窒化物層の上にシリコン窒化物層を形成することが、前記窒素リッチシリコン窒化物層上に化学量論のシリコン窒化物層を形成することを含み、前記化学量論のシリコン窒化物層が約0.75のシリコン対窒素原子比を有する、方法。 - 方法であって、
半導体デバイスの基板を提供することであって、前記基板が半導体材料を含む、前記提供することと、
FETのための領域において前記基板の上に窒素リッチシリコン窒化物層を形成することと、
前記窒素リッチシリコン窒化物層の上にシリコン窒化物層を形成することと、
前記シリコン窒化物層の上に前記FETのゲートを形成することと、
を含み、
前記窒素リッチシリコン窒化物層が、テトラクロロシランとアンモニアとを用いて原子層堆積(ALD)チャンバにおいてALDプロセスにより形成される、方法。 - 請求項15に記載の方法であって、
前記ALDプロセスが、
前記基板を前記ALDチャンバにおいて約375℃の温度まで加熱することと、
前記基板が約375℃の前記温度である間に、約170ミリトールの圧力を提供するために前記テトラクロロシランを前記ALDチャンバに流すことと、
続いて、前記ALDチャンバへの前記テトラクロロシランを中断することと、
続いて、前記基板を前記ALDチャンバにおいて約550℃の温度まで加熱することと、
前記基板が約550℃の前記温度である間に、約300ミリトールの圧力を提供するために前記アンモニアを前記ALDチャンバに流すことと、
続いて、前記ALDチャンバへの前記アンモニアを中断することと、
を含む、方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/191,500 | 2016-06-23 | ||
| US15/191,500 US9741557B1 (en) | 2016-06-23 | 2016-06-23 | Silicon nitride process for reduction of threshold shift |
| PCT/US2017/039150 WO2017223541A1 (en) | 2016-06-23 | 2017-06-23 | Silicon nitride process for reduction of threshold shift |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019519937A JP2019519937A (ja) | 2019-07-11 |
| JP2019519937A5 JP2019519937A5 (ja) | 2020-07-30 |
| JP7121237B2 true JP7121237B2 (ja) | 2022-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2018567698A Active JP7121237B2 (ja) | 2016-06-23 | 2017-06-23 | 閾値シフトの低減のためのシリコン窒化プロセス |
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| Country | Link |
|---|---|
| US (1) | US9741557B1 (ja) |
| JP (1) | JP7121237B2 (ja) |
| CN (1) | CN109219887B (ja) |
| WO (1) | WO2017223541A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016066641A (ja) * | 2014-09-22 | 2016-04-28 | 株式会社東芝 | 半導体装置及び半導体装置の製造方法 |
| US11037851B2 (en) * | 2019-08-30 | 2021-06-15 | Applied Materials, Inc. | Nitrogen-rich silicon nitride films for thin film transistors |
| US11819847B2 (en) | 2020-07-20 | 2023-11-21 | Applied Materials, Inc. | Nanofluidic device with silicon nitride membrane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008205392A (ja) | 2007-02-22 | 2008-09-04 | Fujitsu Ltd | 半導体装置及びその製造方法 |
| JP2009200306A (ja) | 2008-02-22 | 2009-09-03 | Eudyna Devices Inc | 半導体装置の製造方法 |
| US20110298060A1 (en) | 2010-06-02 | 2011-12-08 | International Business Machines Corporation | Interface structure for channel mobility improvement in high-k metal gate stack |
| JP2015103780A (ja) | 2013-11-28 | 2015-06-04 | ルネサスエレクトロニクス株式会社 | 半導体装置および半導体装置の製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972804A (en) * | 1997-08-05 | 1999-10-26 | Motorola, Inc. | Process for forming a semiconductor device |
| US6709928B1 (en) * | 2001-07-31 | 2004-03-23 | Cypress Semiconductor Corporation | Semiconductor device having silicon-rich layer and method of manufacturing such a device |
| JP2004111447A (ja) * | 2002-09-13 | 2004-04-08 | Handotai Rikougaku Kenkyu Center:Kk | 半導体装置及びその製造方法 |
| KR100560654B1 (ko) * | 2004-01-08 | 2006-03-16 | 삼성전자주식회사 | 질화실리콘막을 형성을 위한 질소화합물 및 이를 이용한질화실리콘 막의 형성방법 |
| CN102915952B (zh) * | 2011-08-04 | 2014-11-05 | 中芯国际集成电路制造(上海)有限公司 | 一种半导体器件的制造方法 |
| CN103632968B (zh) * | 2012-08-21 | 2016-10-05 | 中芯国际集成电路制造(上海)有限公司 | 晶体管及其形成方法 |
| US9614105B2 (en) * | 2013-04-22 | 2017-04-04 | Cypress Semiconductor Corporation | Charge-trap NOR with silicon-rich nitride as a charge trap layer |
-
2016
- 2016-06-23 US US15/191,500 patent/US9741557B1/en active Active
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2017
- 2017-06-23 WO PCT/US2017/039150 patent/WO2017223541A1/en not_active Ceased
- 2017-06-23 JP JP2018567698A patent/JP7121237B2/ja active Active
- 2017-06-23 CN CN201780031286.1A patent/CN109219887B/zh active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008205392A (ja) | 2007-02-22 | 2008-09-04 | Fujitsu Ltd | 半導体装置及びその製造方法 |
| JP2009200306A (ja) | 2008-02-22 | 2009-09-03 | Eudyna Devices Inc | 半導体装置の製造方法 |
| US20110298060A1 (en) | 2010-06-02 | 2011-12-08 | International Business Machines Corporation | Interface structure for channel mobility improvement in high-k metal gate stack |
| JP2015103780A (ja) | 2013-11-28 | 2015-06-04 | ルネサスエレクトロニクス株式会社 | 半導体装置および半導体装置の製造方法 |
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| Publication number | Publication date |
|---|---|
| CN109219887B (zh) | 2022-11-01 |
| WO2017223541A1 (en) | 2017-12-28 |
| US9741557B1 (en) | 2017-08-22 |
| JP2019519937A (ja) | 2019-07-11 |
| CN109219887A (zh) | 2019-01-15 |
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