JP2018168398A - 原子層堆積法による酸化イットリウム含有薄膜の製造方法 - Google Patents
原子層堆積法による酸化イットリウム含有薄膜の製造方法 Download PDFInfo
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Abstract
Description
また、特許文献2には、トリス(第2ブチルシクロペンタジエニル)イットリウムがCVD法やALD法で用いることができること、およびCVD法で用いる場合において、必要に応じて用いられる反応性ガスとして、酸素、オゾン、二酸化窒素、一酸化窒素、水蒸気、過酸化水素、水素、モノアルキルアミン、ジアルキルアミン、トリアルキルアミン、アルキレンジアミン等の有機アミン化合物、ヒドラジン、アンモニア等が挙げられている。特許文献2で開示されている方法のように、トリス(第2ブチルシクロペンタジエニル)イットリウムを用いて酸化イットリウム含有薄膜をCVD法によって製造しようとした場合、250〜800℃の反応温度が必要であり、実施例のように良質な酸化イットリウム含有薄膜をCVD法によって製造しようとした場合には、450℃前後の反応温度が必要であった。
(A)トリス(第2ブチルシクロペンタジエニル)イットリウムを含む原料ガスを処理雰囲気に導入し、前記基体上にトリス(第2ブチルシクロペンタジエニル)イットリウムを堆積させる工程(以下、(A)工程と略す場合がある)、(B)水蒸気を含む反応性ガスを処理雰囲気に導入し、前記基体上に堆積させたトリス(第2ブチルシクロペンタジエニル)イットリウムと反応させることでイットリウムを酸化する工程(以下、(B)工程と略す場合がある)を含む酸化イットリウム含有薄膜の製造方法を提供するものである。
トリス(第2ブチルシクロペンタジエニル)イットリウムを原子層堆積法用原料とし、図2に示す装置を用いて以下の条件のALD法により、シリコンウエハ上に酸化イットリウム薄膜を製造することを20回繰り返すことで、20枚の薄膜を製造した。
反応温度(シリコンウエハ温度):200℃
反応性ガス:
アルゴンガス:水蒸気=99.9:0.1 〜95.0:5.0(体積比)
下記(1)〜(4)からなる一連の工程を1サイクルとして、50サイクル繰り返した。
(1)原料容器温度:150℃、原料容器内圧力:100Paの条件で気化させた原子層堆積法用原料を成膜チャンバーに導入し、系圧力:100Paで30秒間堆積させる。
(2)15秒間のアルゴンパージにより、堆積しなかった原料を除去する。
(3)反応性ガスを成膜チャンバーに導入し、系圧力:100Paで0.2秒間反応させる。
(4)60秒間のアルゴンパージにより、未反応の反応性ガス及び副生ガスを除去する。
反応温度(シリコンウエハ温度)を250℃に変更したこと以外は実施例1と同様の方法で20枚の平滑な薄膜を製造した。各々のX線光電子分光法による薄膜組成の確認したところ、得られた薄膜は全て酸化イットリウムであり、炭素含有量は検出下限である0.1atom%よりも少なかった。また、X線反射率法による膜厚測定を行い、その平均値を算出したところ、膜厚は平均6.5nmであり、1サイクル当たりに得られる膜厚は平均0.13nmであった。FE−SEMを用いた断面観察の結果、薄膜の表面は平滑だった。
原子層堆積法用原料をトリス(シクロペンタジエニル)イットリウムに変更したこと以外は、実施例1と同様の方法で20枚の薄膜の製造を試みたが、1〜8枚目はシリコンウエハ上に薄膜が形成されたものの、薄膜表面の凹凸が大きく、平坦な薄膜を形成することができていなかった。また、9〜20枚目はシリコンウエハ上に薄膜は形成されなかった。
原子層堆積法用原料をトリス(2,2,6,6−テトラメチル−3,5−ヘプタンジオネート)イットリウムに変更したこと以外は、実施例1と同様の方法で20枚の薄膜の製造を試みたが、1〜8枚目はシリコンウエハ上に薄膜が形成されたものの、薄膜表面の凹凸が大きく、平坦な薄膜を形成することができていなかった。また、9〜20枚目はシリコンウエハ上に薄膜は形成されなかった。
Claims (4)
- 基体上に原子層堆積法により酸化イットリウム含有薄膜を製造する方法において、
(A)トリス(第2ブチルシクロペンタジエニル)イットリウムを含む原料ガスを処理雰囲気に導入し、前記基体上にトリス(第2ブチルシクロペンタジエニル)イットリウムを堆積させる工程、
(B)水蒸気を含む反応性ガスを処理雰囲気に導入し、前記基体上に堆積させたトリス(第2ブチルシクロペンタジエニル)イットリウムと反応させることでイットリウムを酸化する工程を含む、酸化イットリウム含有薄膜の製造方法。 - 前記(B)工程における前記基体の温度が150℃〜300℃の範囲である、請求項1に記載の酸化イットリウム含有薄膜の製造方法。
- 前記(A)工程と前記(B)工程の間及び前記(B)工程の後の少なくとも一方に、前記処理雰囲気のガスを排気する工程を有する、請求項1又は2に記載の酸化イットリウム含有薄膜の製造方法。
- 前記(A)工程と前記(B)工程とを含む成膜サイクルをこの順に繰り返す、請求項1〜3のいずれか1項に記載の酸化イットリウム含有薄膜の製造方法。
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017064631A JP6912913B2 (ja) | 2017-03-29 | 2017-03-29 | 原子層堆積法による酸化イットリウム含有薄膜の製造方法 |
| KR1020257025334A KR20250121606A (ko) | 2017-03-29 | 2018-02-13 | 원자층 퇴적법에 의한 산화이트륨 함유 박막의 제조 방법 |
| EP18775277.9A EP3604613A4 (en) | 2017-03-29 | 2018-02-13 | PROCESS FOR FORMING A THIN LAYER CONTAINING YTTRIUM OXIDE BY ATOMIC LAYER DEPOSITION |
| KR1020237016767A KR20230074306A (ko) | 2017-03-29 | 2018-02-13 | 원자층 퇴적법에 의한 산화이트륨 함유 박막의 제조 방법 |
| US16/494,838 US11335896B2 (en) | 2017-03-29 | 2018-02-13 | Method for producing yttrium oxide-containing thin film by atomic layer deposition |
| CN201880022667.8A CN110475904A (zh) | 2017-03-29 | 2018-02-13 | 通过原子层沉积法制造含氧化钇薄膜的制造方法 |
| PCT/JP2018/004849 WO2018179924A1 (ja) | 2017-03-29 | 2018-02-13 | 原子層堆積法による酸化イットリウム含有薄膜の製造方法 |
| KR1020197029250A KR20190128062A (ko) | 2017-03-29 | 2018-02-13 | 원자층 퇴적법에 의한 산화이트륨 함유 박막의 제조 방법 |
| TW107106758A TWI735750B (zh) | 2017-03-29 | 2018-03-01 | 由原子層沉積法所形成的含氧化釔薄膜的製造方法 |
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| JP2011243620A (ja) * | 2010-05-14 | 2011-12-01 | Tokyo Electron Ltd | 成膜方法および成膜装置 |
| JP2015119045A (ja) * | 2013-12-18 | 2015-06-25 | 大陽日酸株式会社 | 窒化ケイ素含有薄膜の形成方法 |
| JP2017053019A (ja) * | 2015-09-11 | 2017-03-16 | 田中貴金属工業株式会社 | 有機ルテニウム化合物からなる化学蒸着用原料及び該化学蒸着用原料を用いた化学蒸着法 |
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| US4882206A (en) | 1988-06-22 | 1989-11-21 | Georgia Tech Research Corporation | Chemical vapor deposition of group IIIB metals |
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| JP5138927B2 (ja) * | 2006-12-25 | 2013-02-06 | 共同印刷株式会社 | フレキシブルtft基板及びその製造方法とフレキシブルディスプレイ |
| JP2008274374A (ja) | 2007-05-02 | 2008-11-13 | Seiko Epson Corp | 成膜装置および成膜方法 |
| WO2009131902A2 (en) * | 2008-04-23 | 2009-10-29 | Intermolecular, Inc. | Yttrium and titanium high-k dielectric films |
| TWI610932B (zh) * | 2012-12-07 | 2018-01-11 | 東曹股份有限公司 | 釕錯合物及其製造方法、陽離子性三腈錯合物及其製造方法、以及含釕薄膜的製造方法 |
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| JP2005068074A (ja) * | 2003-08-25 | 2005-03-17 | Asahi Denka Kogyo Kk | 希土類金属錯体、薄膜形成用原料及び薄膜の製造方法 |
| JP2011243620A (ja) * | 2010-05-14 | 2011-12-01 | Tokyo Electron Ltd | 成膜方法および成膜装置 |
| JP2015119045A (ja) * | 2013-12-18 | 2015-06-25 | 大陽日酸株式会社 | 窒化ケイ素含有薄膜の形成方法 |
| JP2017053019A (ja) * | 2015-09-11 | 2017-03-16 | 田中貴金属工業株式会社 | 有機ルテニウム化合物からなる化学蒸着用原料及び該化学蒸着用原料を用いた化学蒸着法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021065646A1 (ja) | 2019-10-04 | 2021-04-08 | 株式会社Adeka | 酸化イットリウム含有膜の製造方法 |
| JPWO2021065646A1 (ja) * | 2019-10-04 | 2021-04-08 | ||
| CN114502770A (zh) * | 2019-10-04 | 2022-05-13 | 株式会社Adeka | 含氧化钇膜的制造方法 |
| KR20220078608A (ko) | 2019-10-04 | 2022-06-10 | 가부시키가이샤 아데카 | 산화이트륨 함유막의 제조 방법 |
| JP7636336B2 (ja) | 2019-10-04 | 2025-02-26 | 株式会社Adeka | 酸化イットリウム含有膜の製造方法 |
| KR102884827B1 (ko) * | 2019-10-04 | 2025-11-11 | 가부시키가이샤 아데카 | 산화이트륨 함유막의 제조 방법 |
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| KR20190128062A (ko) | 2019-11-14 |
| JP6912913B2 (ja) | 2021-08-04 |
| KR20230074306A (ko) | 2023-05-26 |
| CN110475904A (zh) | 2019-11-19 |
| EP3604613A4 (en) | 2020-12-02 |
| TWI735750B (zh) | 2021-08-11 |
| WO2018179924A1 (ja) | 2018-10-04 |
| US11335896B2 (en) | 2022-05-17 |
| US20200083520A1 (en) | 2020-03-12 |
| TW201840891A (zh) | 2018-11-16 |
| KR20250121606A (ko) | 2025-08-12 |
| EP3604613A1 (en) | 2020-02-05 |
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