JP2021061348A - 基板処理方法及び基板処理装置 - Google Patents
基板処理方法及び基板処理装置 Download PDFInfo
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- JP2021061348A JP2021061348A JP2019185446A JP2019185446A JP2021061348A JP 2021061348 A JP2021061348 A JP 2021061348A JP 2019185446 A JP2019185446 A JP 2019185446A JP 2019185446 A JP2019185446 A JP 2019185446A JP 2021061348 A JP2021061348 A JP 2021061348A
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- Prior art keywords
- gas
- insulating film
- adsorption layer
- etching
- substrate processing
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- 238000012545 processing Methods 0.000 title claims abstract description 168
- 239000000758 substrate Substances 0.000 title claims abstract description 50
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 199
- 238000005530 etching Methods 0.000 claims abstract description 52
- 239000012495 reaction gas Substances 0.000 claims abstract description 30
- 238000001179 sorption measurement Methods 0.000 claims abstract description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 29
- 150000002500 ions Chemical class 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 4
- VOSJXMPCFODQAR-UHFFFAOYSA-N ac1l3fa4 Chemical compound [SiH3]N([SiH3])[SiH3] VOSJXMPCFODQAR-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002429 hydrazines Chemical class 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 235000012431 wafers Nutrition 0.000 description 42
- 239000002243 precursor Substances 0.000 description 31
- 230000007246 mechanism Effects 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 238000012546 transfer Methods 0.000 description 13
- 238000010926 purge Methods 0.000 description 12
- 238000003860 storage Methods 0.000 description 9
- 230000032258 transport Effects 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 6
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 5
- 238000005121 nitriding Methods 0.000 description 5
- 230000007723 transport mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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Abstract
Description
本実施形態に係る基板処理システムについて、図1を用いて説明する。図1は、基板処理システムの構成例を示す概略図である。
温度:250〜600℃
圧力:0.5〜10Torr
DCSガス流量:10〜100cc/サイクル
NH3ガス流量:500〜10000sccm
Arガス流量:500〜10000sccm
工程S201時間:0.05〜2.0秒
工程S202時間:0.1〜2.0秒
工程S203時間:0.5〜2.0秒
工程S204時間:1.0〜6.0秒
工程S205時間:0.1〜2.0秒
RFパワー:50〜1000W
下部リアクタンス:−300〜100Ω
温度:100〜600℃
圧力:0.5〜10.0Torr
NF3ガス流量:5〜500sccm
Arガス流量:1000〜10000sccm
工程S301時間:0.0〜10.0秒
工程S302時間:0.0〜60.0秒
工程S303時間:0.5〜10.0秒
工程S305時間:0.0〜60.0秒
工程S306時間:0.0〜60.0秒
RFパワー:10〜500W
なお、工程S301、S302は省いてもよく、S305、S306はどちらか片方を省いてもよい。
温度:250〜600℃
圧力:0.5〜10.0Torr
DCSガス流量:10〜100cc/サイクル
NH3ガス流量:500〜10000sccm
Arガス流量:500〜10000sccm
工程S201時間:0.05〜2.0秒
工程S202時間:0.1〜2.0秒
工程S203時間:0.5〜2.0秒
工程S204時間:1.0〜6.0秒
工程S205時間:0.1〜2.0秒
RFパワー:50〜1000W
下部リアクタンス:−300〜100Ω
200 真空搬送室
W ウエハ
1 処理容器
2 載置台
3 シャワーヘッド
4 排気部
9 制御部
5,6 ガス供給機構
51a プリカーサガス供給源
52a 反応ガス供給源
53a Arガス供給源
54a Arガス供給源
61a エッチングガス供給源
62a Arガス供給源
8 RF電力供給部(高周波電力供給部)
83 高周波電源
Claims (13)
- 凹部が形成された基板上に、シリコン含有ガスを供給して吸着層を形成する工程と、反応ガスのプラズマを生成して前記吸着層と反応させる工程と、を繰り返して、前記凹部に第1の絶縁膜を埋め込む工程と、
エッチングガスのプラズマを生成して前記第1の絶縁膜をエッチングする工程と、を有し、
前記吸着層と反応させる工程におけるプラズマの生成パラメータを制御して、エッチング後の前記凹部に埋め込まれた前記第1の絶縁膜の形状を制御する、
基板処理方法。 - 前記吸着層と反応させる工程における前記吸着層に入射するイオンのエネルギを制御する、
請求項1に記載の基板処理方法。 - 前記プラズマの生成パラメータは、プラズマを生成するための高周波電力、前記基板を載置する下部電極のリアクタンス、処理空間内の圧力のうち少なくとも1つを含む、
請求項1または請求項2に記載の基板処理方法。 - 前記第1の絶縁膜をエッチングする工程の後に、
前記基板上に、シリコン含有ガスを供給して吸着層を形成する工程と、反応ガスのプラズマを生成して前記吸着層と反応させる工程と、を繰り返して、前記凹部に第2の絶縁膜を埋め込む工程を更に有する、
請求項1乃至請求項3のいずれか1項に記載の基板処理方法。 - 前記第2の絶縁膜を埋め込む工程は、前記第1の絶縁膜よりもエッチング耐性の高い前記第2の絶縁膜を埋め込む、
請求項4に記載の基板処理方法。 - 前記第2の絶縁膜を埋め込む工程における前記吸着層と反応させる工程における前記吸着層に入射するイオンのエネルギは、
前記第1の絶縁膜を成膜する工程における前記吸着層と反応させる工程における前記吸着層に入射するイオンのエネルギよりも高くなるように、プラズマの生成パラメータを制御する、
請求項4または請求項5に記載の基板処理方法。 - 前記第1の絶縁膜を成膜する工程は、
水素含有ガスのプラズマを生成して前記吸着層を改質する工程を更に有する、
請求項1乃至請求項6のいずれか1項に記載の基板処理方法。 - 前記第1の絶縁膜を埋め込む工程と、前記第1の絶縁膜をエッチングする工程は、大気暴露させずに処理される、
請求項1乃至請求項7のいずれか1項に記載の基板処理方法。 - 前記第1の絶縁膜を埋め込む工程と、前記第1の絶縁膜をエッチングする工程は、同一の処理装置で処理される、
請求項1乃至請求項7のいずれか1項に記載の基板処理方法。 - 前記第1の絶縁膜は、SiO2、SiNのうち、少なくとも何れか一つを含む、
請求項1乃至請求項9のいずれか1項に記載の基板処理方法。 - 前記シリコン含有ガスは、DCSガス、SiH4ガス、TSA(trisilylamine)ガスのうち、少なくとも何れか一つを含む、
請求項1乃至請求項10のいずれか1項に記載の基板処理方法。 - 前記反応ガスは、NH3ガス、N2ガス、ヒドラジン、ヒドラジン誘導体ガスのうち、少なくとも何れか一つを含む、
請求項1乃至請求項11のいずれか1項に記載の基板処理方法。 - 基板を載置する載置台を有する処理容器と、
前記処理容器にガスを供給するガス供給源と、
高周波電力を印加して前記処理容器内にプラズマを生成する高周波電力供給部と、
制御部と、を備え、
前記制御部は、
凹部が形成された前記基板上に、シリコン含有ガスを供給して吸着層を形成する工程と、反応ガスのプラズマを生成して前記吸着層と反応させる工程と、を繰り返して、前記凹部に第1の絶縁膜を埋め込む工程と、
エッチングガスのプラズマを生成して前記第1の絶縁膜をエッチングする工程と、を有し、
前記吸着層と反応させる工程におけるプラズマの生成パラメータを制御して、エッチング後の前記凹部に埋め込まれた前記第1の絶縁膜の形状を制御する、
基板処理装置。
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JP2014532304A (ja) * | 2011-09-23 | 2014-12-04 | ノベラス・システムズ・インコーポレーテッドNovellus Systems Incorporated | プラズマ活性化されるコンフォーマル誘電体膜 |
JP2018026524A (ja) * | 2016-08-08 | 2018-02-15 | 東京エレクトロン株式会社 | シリコン窒化膜の成膜方法および成膜装置 |
WO2018110150A1 (ja) * | 2016-12-14 | 2018-06-21 | 株式会社アルバック | 成膜装置及び成膜方法 |
US20180301460A1 (en) * | 2017-04-13 | 2018-10-18 | Asm Ip Holding B.V. | Substrate processing method and device manufactured by the same |
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JP2014532304A (ja) * | 2011-09-23 | 2014-12-04 | ノベラス・システムズ・インコーポレーテッドNovellus Systems Incorporated | プラズマ活性化されるコンフォーマル誘電体膜 |
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