JP2021125610A - 成膜方法及び成膜装置 - Google Patents
成膜方法及び成膜装置 Download PDFInfo
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- JP2021125610A JP2021125610A JP2020019159A JP2020019159A JP2021125610A JP 2021125610 A JP2021125610 A JP 2021125610A JP 2020019159 A JP2020019159 A JP 2020019159A JP 2020019159 A JP2020019159 A JP 2020019159A JP 2021125610 A JP2021125610 A JP 2021125610A
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- film forming
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000015572 biosynthetic process Effects 0.000 title description 12
- 239000002052 molecular layer Substances 0.000 claims abstract description 61
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000460 chlorine Substances 0.000 claims abstract description 30
- 239000010703 silicon Substances 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 23
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 12
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- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 229910003828 SiH3 Inorganic materials 0.000 abstract 2
- OLRJXMHANKMLTD-UHFFFAOYSA-N silyl Chemical compound [SiH3] OLRJXMHANKMLTD-UHFFFAOYSA-N 0.000 abstract 2
- 229910007264 Si2H6 Inorganic materials 0.000 abstract 1
- PPDADIYYMSXQJK-UHFFFAOYSA-N trichlorosilicon Chemical compound Cl[Si](Cl)Cl PPDADIYYMSXQJK-UHFFFAOYSA-N 0.000 abstract 1
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- 238000010586 diagram Methods 0.000 description 5
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
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- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
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- 230000033001 locomotion Effects 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】本開示の一態様による成膜方法は、Si−H結合を切断することが可能な第1の温度に設定された真空容器内に、互いに離間した第1の処理領域と第2の処理領域とが周方向に沿って配置され、前記第1の処理領域と前記第2の処理領域を回転通過可能な回転テーブルの上に載置された基板の上にシリコン膜を成膜する成膜方法であって、前記基板が前記第1の処理領域を通過する際に、前記第1の温度よりも低い第2の温度に設定されたSi2H6ガスを供給し、前記基板の表面上にSiH3の分子層を形成するステップと、前記基板が前記第2の処理領域を通過する際に、珪素及び塩素を含むガスを供給し、前記SiH3の分子層のSi−H結合を切断すると共に表面上にSiCl3の分子層を形成するステップと、を含む成膜工程を有する。
【選択図】図8
Description
図1は、実施形態の成膜装置の一例を示す断面図である。図2は、実施形態の成膜装置の内部構成の一例を示す斜視図である。図3は、実施形態の成膜装置の内部構成の一例を示す上面図である。
実施形態の成膜方法について、前述の成膜装置を用いて行う場合を例に挙げて説明する。図7は、実施形態の成膜方法の一例を示すフローチャートである。実施形態の成膜方法は、シード層形成工程S10、コンフォーマル成膜工程S20及びボトムアップ成膜工程S30を有する。
2 回転テーブル
D1 第1の分離領域
P1 第1の処理領域
P2 第2の処理領域
P3 第3の処理領域
W ウエハ
Claims (12)
- Si−H結合を切断することが可能な第1の温度に設定された真空容器内に、互いに離間した第1の処理領域と第2の処理領域とが周方向に沿って配置され、前記第1の処理領域と前記第2の処理領域を回転通過可能な回転テーブルの上に載置された基板の上にシリコン膜を成膜する成膜方法であって、
前記基板が前記第1の処理領域を通過する際に、前記第1の温度よりも低い第2の温度に設定されたSi2H6ガスを供給し、前記基板の表面上にSiH3の分子層を形成するステップと、
前記基板が前記第2の処理領域を通過する際に、珪素及び塩素を含むガスを供給し、前記SiH3の分子層のSi−H結合を切断すると共に表面上にSiCl3の分子層を形成するステップと、
を含む成膜工程を有する、成膜方法。 - 前記成膜工程では、前記SiH3の分子層を形成するステップと前記SiCl3の分子層を形成するステップとを含む複数回のサイクルを実行する、
請求項1に記載の成膜方法。 - 前記珪素及び塩素を含むガスは、HCDガスである、
請求項1又は2に記載の成膜方法。 - 前記成膜工程の前に、前記基板の表面にシード層を形成する工程を更に有する、
請求項1乃至3のいずれか一項に記載の成膜方法。 - 前記シード層を形成する工程は、アミノシラン系ガスを前記基板の表面に供給する処理を含む、
請求項4に記載の成膜方法。 - 前記第1の処理領域と前記第2の処理領域との間に、前記第1の処理領域と前記第2の処理領域とを分離する第1の分離領域が設けられ、
前記成膜工程は、前記SiH3の分子層を形成するステップの後、前記基板に前記第1の分離領域を通過させて前記基板の表面にパージガスを供給し、SiH3のCVD反応の発生を抑制するステップを更に含む、
請求項1乃至5のいずれか一項に記載の成膜方法。 - 前記基板は、前記回転テーブルに対して回転可能である、
請求項1乃至6のいずれか一項に記載の成膜方法。 - 前記回転テーブルの周方向に沿って前記第2の処理領域から離間して配置される第3の処理領域を有し、
前記基板の表面には凹部が形成されており、
前記成膜工程の後に実行される埋め込み工程を更に有し、
前記埋め込み工程は、
前記SiH3の分子層を形成するステップと、
前記SiCl3の分子層を形成するステップと、
前記基板が前記第3の処理領域を通過する際に、前記SiCl3の分子層を異方性エッチングして前記凹部の内壁上部の前記SiCl3の分子層を選択的に除去するステップと、
を含む、
請求項1乃至7のいずれか一項に記載の成膜方法。 - 前記埋め込み工程では、前記SiH3の分子層を形成するステップと前記SiCl3の分子層を形成するステップとを含む複数回のサイクルを実行し、前記複数回のサイクルの少なくとも一部が前記SiCl3の分子層を選択的に除去するステップを含む、
請求項8に記載の成膜方法。 - 前記異方性エッチングは、塩素ラジカル又はフッ素ラジカルを供給することにより実行される、
請求項9に記載の成膜方法。 - 前記塩素ラジカル又は前記フッ素ラジカルは、前記基板の表面に略平行に供給される、
請求項10に記載の成膜方法。 - Si−H結合を切断することが可能な第1の温度に設定された真空容器と、
前記真空容器内に設けられ、基板が載置されると共に回転可能な回転テーブルと、
前記真空容器内に、周方向に沿って設けられ、前記第1の温度よりも低い第2の温度でSi2H6ガスを供給し、前記回転テーブルの回転により前記基板が通過した際に、前記基板の凹部にSiH3の分子層を形成する第1の処理領域と、
前記第1の処理領域と周方向に離間して設けられ、前記回転テーブルの回転により前記基板が通過した際に、珪素及び塩素を含むガスを供給し、前記SiH3の分子層のSi−H結合を切断すると共に表面上にSiCl3の分子層を形成する第2の処理領域と、
を備える、成膜装置。
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