JP6960351B2 - 処理方法 - Google Patents
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- JP6960351B2 JP6960351B2 JP2018026998A JP2018026998A JP6960351B2 JP 6960351 B2 JP6960351 B2 JP 6960351B2 JP 2018026998 A JP2018026998 A JP 2018026998A JP 2018026998 A JP2018026998 A JP 2018026998A JP 6960351 B2 JP6960351 B2 JP 6960351B2
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Description
Claims (7)
- 被加工物の処理方法であって、
前記被加工物は、
下地領域と、
シリコンから形成されており、前記下地領域から突き出るように延在する第1の凸部及び第2の凸部であり、該下地領域上で一方向に配列された該第1の凸部及び該第2の凸部と、
シリコン及び窒素を含み、前記第1の凸部の頂部上に設けられた第1の窒化領域と、
シリコン及び窒素を含み、前記第2の凸部の頂部上に設けられた第2の窒化領域と、
炭素を含み、前記第1の凸部、前記第2の凸部、前記第1の窒化領域、及び前記第2の窒化領域を覆うように設けられた有機領域と、
前記第1の凸部及び前記第1の窒化領域上で延在する前記有機領域の部分領域を露出させるように該有機領域上に設けられたマスクと、
を有し、
該処理方法は、
前記有機領域の前記部分領域を除去して前記第1の窒化領域を露出させるよう、前記有機領域をエッチングする工程と、
前記有機領域をエッチングする前記工程によって前記被加工物から作成された中間生産物の表面上にコンフォーマルにシリコン酸化膜を形成する工程と、
前記第1の窒化領域の上面を露出させるよう前記シリコン酸化膜をエッチングする工程と、
前記シリコン酸化膜及び前記第1の凸部に対して選択的に且つ等方的に前記第1の窒化領域をエッチングする工程と、
を含む処理方法。 - 前記シリコン酸化膜は原子層堆積法により形成される請求項1に記載の処理方法。
- 前記第1の窒化領域をエッチングする前記工程において、
水素含有ガスのプラズマにより、前記第1の窒化領域の表面を含む前記第1の窒化領域の少なくとも一部を改質する工程であり、該第1の窒化領域の該少なくとも一部から改質領域が形成される、該工程と、
フッ素含有ガスのプラズマにより、前記改質領域をエッチングする工程と、
を含むシーケンスが1回以上実行される、請求項1又は2に記載の処理方法。 - 前記シーケンスは、複数回実行され、
少なくとも前記第1の凸部が露出される時点を含む期間において実行されるシーケンスは、酸素含有ガスのプラズマにより、前記第1の凸部の表面を含む該第1の凸部の一部を酸化させる工程を含む、
請求項3に記載の処理方法。 - 前記第1の窒化領域の少なくとも一部を改質する前記工程が実行される期間と第1の凸部の一部を酸化させる前記工程が実行される期間は、互いに異なる、請求項4に記載の処理方法。
- 前記有機領域をエッチングする前記工程では、前記第1の凸部の周囲の前記有機領域の上面の高さ方向の位置が、前記第1の窒化領域と前記第1の凸部との間の境界の高さ方向の位置と同一であるか、又は、該境界の該高さ方向の該位置よりも低くなるように、前記有機領域がエッチングされる、請求項1〜5の何れか一項に記載の処理方法。
- 前記有機領域をエッチングする前記工程、シリコン酸化膜を形成する前記工程、前記シリコン酸化膜をエッチングする前記工程、及び前記第1の窒化領域をエッチングする前記工程が、単一のプラズマ処理装置の単一のチャンバの中に前記被加工物が収容された状態で実行される、請求項1〜6の何れか一項に記載の処理方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018026998A JP6960351B2 (ja) | 2018-02-19 | 2018-02-19 | 処理方法 |
| US16/274,273 US10593783B2 (en) | 2018-02-19 | 2019-02-13 | Processing method |
| KR1020190016821A KR102747214B1 (ko) | 2018-02-19 | 2019-02-13 | 처리 방법 |
| TW108104908A TWI818953B (zh) | 2018-02-19 | 2019-02-14 | 被加工物之處理方法 |
| CN201910115973.2A CN110176400B (zh) | 2018-02-19 | 2019-02-15 | 处理方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018026998A JP6960351B2 (ja) | 2018-02-19 | 2018-02-19 | 処理方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019145608A JP2019145608A (ja) | 2019-08-29 |
| JP6960351B2 true JP6960351B2 (ja) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018026998A Active JP6960351B2 (ja) | 2018-02-19 | 2018-02-19 | 処理方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10593783B2 (ja) |
| JP (1) | JP6960351B2 (ja) |
| KR (1) | KR102747214B1 (ja) |
| CN (1) | CN110176400B (ja) |
| TW (1) | TWI818953B (ja) |
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| US8569125B2 (en) * | 2011-11-30 | 2013-10-29 | International Business Machines Corporation | FinFET with improved gate planarity |
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| US8980758B1 (en) * | 2013-09-17 | 2015-03-17 | Applied Materials, Inc. | Methods for etching an etching stop layer utilizing a cyclical etching process |
| JP6243722B2 (ja) * | 2013-12-10 | 2017-12-06 | 東京エレクトロン株式会社 | エッチング処理方法 |
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| JP6059165B2 (ja) * | 2014-02-19 | 2017-01-11 | 東京エレクトロン株式会社 | エッチング方法、及びプラズマ処理装置 |
| US9196499B2 (en) * | 2014-03-26 | 2015-11-24 | Globalfoundries Inc. | Method of forming semiconductor fins |
| US9780191B2 (en) * | 2014-07-18 | 2017-10-03 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method of forming spacers for a gate of a transistor |
| JP6494424B2 (ja) * | 2015-05-29 | 2019-04-03 | 東京エレクトロン株式会社 | エッチング方法 |
| CN106571336B (zh) * | 2015-10-12 | 2020-04-07 | 中芯国际集成电路制造(上海)有限公司 | 鳍式场效应管的形成方法 |
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| US9806161B1 (en) * | 2016-04-07 | 2017-10-31 | Globalfoundries Inc. | Integrated circuit structure having thin gate dielectric device and thick gate dielectric device |
| US10026827B2 (en) * | 2016-04-10 | 2018-07-17 | United Microelectronics Corp. | Method for fabricating semiconductor device |
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| US10008414B2 (en) * | 2016-06-28 | 2018-06-26 | Taiwan Semiconductor Manufacturing Co., Ltd. | System and method for widening Fin widths for small pitch FinFET devices |
| JP6757624B2 (ja) * | 2016-08-12 | 2020-09-23 | 東京エレクトロン株式会社 | 被処理体を処理する方法 |
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| CN110176400A (zh) | 2019-08-27 |
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| US20190259860A1 (en) | 2019-08-22 |
| TW201942408A (zh) | 2019-11-01 |
| KR20190100041A (ko) | 2019-08-28 |
| KR102747214B1 (ko) | 2024-12-31 |
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| US10593783B2 (en) | 2020-03-17 |
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