JP6584348B2 - 凹部の埋め込み方法および処理装置 - Google Patents
凹部の埋め込み方法および処理装置 Download PDFInfo
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Description
最初に、本発明に係る凹部の埋め込み方法の一実施形態について、図1のフロー図および図2の工程断面図に基づいて説明する。
次に、本発明の凹部の埋め込み方法の実施に用いることができる処理装置の一例について説明する。図3は、そのような処理装置の一例である成膜装置を示す縦断面図である。
・ウエハ枚数:150枚
・アモルファスシリコン膜成膜
温度:500℃
圧力:2.0Torr(267Pa)
SiH4ガス流量:1000sccm
・エッチング
温度:400℃
圧力:0.3Torr(40Pa)
Cl2ガス流量:1000sccm
・Ge膜埋め込み
温度:300℃
圧力:1.5Torr(200Pa)
GeH4ガス流量:700sccm
・SiGe膜埋め込み
温度:350℃
圧力:1.5Torr(200Pa)
GeH4ガス流量:900sccm
SiH4ガス流量:225sccm
次に実験例について説明する。
図4は実験例におけるサンプルウエハの各工程の断面を示すSEM写真である。
図4(a)に示すような、Si基体上に形成されたSiO2膜に間口の幅が40nm、深さが300nmのトレンチが所定パターンで形成されたサンプルウエハを準備し、このサンプルウエハに対し図3の成膜装置を用いて埋め込み処理を行った。
以上、本発明の実施形態について説明したが、この発明は、上記の実施形態に限定されることはなく、その趣旨を逸脱しない範囲で種々変形可能である。
2;加熱炉
4;ヒータ
10;処理容器
20;ウエハボート
21;Si原料ガス供給機構
22;Ge原料ガス供給機構
23;エッチングガス供給機構
41;排気管
42;真空ポンプ
50;制御部
200;Si基体
201;絶縁膜
202;凹部(トレンチまたはホール)
203;アモルファスシリコン膜
204;ゲルマニウム系膜
W;半導体ウエハ(被処理基板)
Claims (12)
- 凹部が形成された絶縁膜を表面に有する被処理基板に対し、前記凹部にゲルマニウムまたはシリコンゲルマニウムからなるゲルマニウム系膜を埋め込む凹部の埋め込み方法であって、
前記絶縁膜の表面に、前記凹部を完全に埋め込まない程度にシリコン膜を成膜する工程と、
次いで、前記シリコン膜をエッチングして、前記凹部内の底部のみに前記シリコン膜を残存させる工程と、
次いで、前記凹部内の底部に残存する前記シリコン膜上に選択的にゲルマニウムまたはシリコンゲルマニウムからなるゲルマニウム系膜を成長させ、前記凹部に選択的に前記ゲルマニウム系膜を埋め込む工程と
を有することを特徴とする凹部の埋め込み方法。 - 前記シリコン膜は、シリコン原料ガスを用いたCVD法により形成され、前記ゲルマニウム系膜は、ゲルマニウム原料ガス、またはゲルマニウム原料ガスおよびシリコン原料ガスを用いたCVD法により形成されることを特徴とする請求項1に記載の凹部の埋め込み方法。
- 前記シリコン原料ガスは、シラン系ガスまたはアミノシラン系ガスであることを特徴とする請求項2に記載の凹部の埋め込み方法。
- 前記ゲルマニウム原料ガスは、ゲルマン系ガスまたはアミノゲルマン系ガスであることを特徴とする請求項2または請求項3に記載の凹部の埋め込み方法。
- 前記シリコン膜をエッチングする工程は、被処理基板に前記シリコン膜をエッチング可能なエッチングガスを供給することによりなされることを特徴とする請求項1から請求項4のいずれか1項に記載の凹部の埋め込み方法。
- 前記エッチングガスは、Cl2、HCl、F2、Br2、HBrから選択されたものであることを特徴とする請求項5に記載の凹部の埋め込み方法。
- 前記シリコン膜を成膜する工程は、前記被処理基板の温度を300〜700℃の範囲内にして行われることを特徴とする請求項1から請求項6のいずれか1項に記載の凹部の埋め込み方法。
- 前記シリコン膜をエッチングする工程は、前記被処理基板の温度を200〜500℃にして行われることを特徴とする請求項1から請求項7のいずれか1項に記載の凹部の埋め込み方法。
- 前記凹部に選択的に前記ゲルマニウム系膜を埋め込む工程は、前記被処理基板の温度を200〜500℃にして行われることを特徴とする請求項1から請求項8のいずれか1項に記載の凹部の埋め込み方法。
- 凹部が形成された絶縁膜を表面に有する被処理基板に対し、前記凹部にゲルマニウムまたはシリコンゲルマニウムからなるゲルマニウム系膜を埋め込む処理装置であって、
前記被処理基板を収容する処理容器と、
前記処理容器内に所定のガスを供給するガス供給部と、
前記処理容器内を加熱する加熱機構と、
前記処理容器内を排気して減圧状態とする排気機構と、
前記ガス供給部、前記加熱機構、および前記排気機構を制御する制御部と
を具備し、
前記制御部は、
前記排気機構により前記処理容器内を所定の減圧状態に制御し、前記加熱機構により前記処理容器内を所定温度に制御し、
前記ガス供給部から前記処理容器内にシリコン原料ガスを供給させて、前記絶縁膜の表面に、前記凹部を完全に埋め込まない程度にシリコン膜を成膜させ、
次いで、前記ガス供給部から前記処理容器内にエッチングガスを供給させ、前記シリコン膜をエッチングして、前記凹部内の底部のみに前記シリコン膜を残存させ、
次いで、前記ガス供給部から前記処理容器内にゲルマニウム原料ガス、またはゲルマニウム原料ガスおよび前記シリコン原料ガスを供給させて、前記凹部内の底部に残存する前記シリコン膜上に選択的にゲルマニウムまたはシリコンゲルマニウムからなるゲルマニウム系膜を成長させることを特徴とする処理装置。 - 前記処理容器は、前記被処理基板が複数保持された基板保持具が収容され、複数の基板に対して処理が行われることを特徴とする請求項10に記載の処理装置。
- コンピュータ上で動作し、処理装置を制御するためのプログラムが記憶された記憶媒体であって、前記プログラムは、実行時に、請求項1から請求項9のいずれかの凹部の埋め込み方法が行われるように、コンピュータに前記処理装置を制御させることを特徴とする記憶媒体。
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| JP2016043021A JP6584348B2 (ja) | 2016-03-07 | 2016-03-07 | 凹部の埋め込み方法および処理装置 |
| TW106106309A TWI700784B (zh) | 2016-03-07 | 2017-02-24 | 凹部之填埋方法及記錄媒體 |
| KR1020170026265A KR102116165B1 (ko) | 2016-03-07 | 2017-02-28 | 오목부의 매립 방법 및 처리 장치 |
| US15/450,595 US9824919B2 (en) | 2016-03-07 | 2017-03-06 | Recess filling method and processing apparatus |
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| WO2019035553A1 (ko) | 2017-08-17 | 2019-02-21 | 주식회사 엘지화학 | 슬롯들의 움직임으로 전극 활물질 슬러리의 코팅 형태가 변환되는 슬롯 다이 코터 |
| JP6777624B2 (ja) | 2017-12-28 | 2020-10-28 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理装置、およびプログラム |
| US20220108888A1 (en) * | 2020-10-04 | 2022-04-07 | Applied Materials, Inc. | Selective Deposition of Germanium |
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| TWI700784B (zh) | 2020-08-01 |
| US9824919B2 (en) | 2017-11-21 |
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| JP2017162850A (ja) | 2017-09-14 |
| US20170256450A1 (en) | 2017-09-07 |
| KR20170104380A (ko) | 2017-09-15 |
| KR102116165B1 (ko) | 2020-06-05 |
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