JP6759366B2 - 3dnand用のトンネル酸化物の高圧でのアンモニア窒化 - Google Patents
3dnand用のトンネル酸化物の高圧でのアンモニア窒化 Download PDFInfo
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- JP6759366B2 JP6759366B2 JP2018562292A JP2018562292A JP6759366B2 JP 6759366 B2 JP6759366 B2 JP 6759366B2 JP 2018562292 A JP2018562292 A JP 2018562292A JP 2018562292 A JP2018562292 A JP 2018562292A JP 6759366 B2 JP6759366 B2 JP 6759366B2
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- 238000005121 nitriding Methods 0.000 title description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title 2
- 229910021529 ammonia Inorganic materials 0.000 title 1
- 239000000758 substrate Substances 0.000 claims description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 44
- 239000010453 quartz Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 12
- 238000005229 chemical vapour deposition Methods 0.000 claims description 7
- 238000000231 atomic layer deposition Methods 0.000 claims description 6
- 238000005240 physical vapour deposition Methods 0.000 claims description 6
- 238000001289 rapid thermal chemical vapour deposition Methods 0.000 claims description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 27
- 235000012239 silicon dioxide Nutrition 0.000 description 23
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005086 pumping Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000011282 treatment Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- WYEMLYFITZORAB-UHFFFAOYSA-N boscalid Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1NC(=O)C1=CC=CN=C1Cl WYEMLYFITZORAB-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
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Description
NH3 *+SiO2→SiON+H2O
また、本願は以下に記載する態様を含む。
(態様1)
処理チャンバであって、
内部空間を画定するチャンバ本体と、
処理中に1つ以上の基板を支持するように構成された基板支持装置と、
前記処理チャンバ内に配置され、前記基板支持装置を収納するように構成された石英エンベロープと、
前記石英エンベロープの周囲に配置された1つ以上の加熱装置と、
前記処理チャンバに連結され、前記処理チャンバの前記内部空間に対してNH 3 ガスを供給するように構成されたガス射出アセンブリと、
前記処理チャンバに連結され、前記処理チャンバを少なくとも10atmの圧力に維持するように構成されたポンプ装置と、
を含む処理チャンバ。
(態様2)
前記ポンプ装置が、前記処理チャンバを約10atmと20atmの間の圧力に維持するように構成されている、態様1に記載の処理チャンバ。
(態様3)
前記チャンバ本体の温度を制御するように構成された温度制御装置
をさらに備える、態様1に記載の処理チャンバ。
(態様4)
前記温度制御装置が前記チャンバ本体内に形成された冷却チャネルであり、前記冷却チャネルは前記チャンバ本体を通って熱伝導流体を流すように構成されている、態様3に記載の処理チャンバ。
(態様5)
前記処理チャンバの端部に位置する単一のチャンバドアであって、前記基板支持装置を進入及び退出させるように構成された単一のチャンバドア
をさらに備える、態様1の処理チャンバ。
(態様6)
前記ガス射出アセンブリが、前記石英エンベロープの内部空間に対してNH 3 ガスを供給する、態様1に記載の処理チャンバ。
(態様7)
前記1つ以上の基板が、上に形成された二酸化ケイ素(SiO 2 )層を含む、態様1に記載の処理チャンバ。
(態様8)
基板を処理するためのシステムであって、
移送チャンバ、及び
前記移送チャンバに連結された複数の処理チャンバであって、前記複数の処理チャンバのうちの少なくとも1つが、
内部空間を画定するチャンバ本体と、
処理中に1つ以上の基板を支持するように構成された基板支持装置と、
前記処理チャンバ内に配置され、前記基板支持装置を収納するように構成された石英エンベロープと、
前記石英エンベロープの周囲に配置された1つ以上の加熱装置と、
前記処理チャンバに連結され、前記処理チャンバの前記内部空間に対してNH 3 ガスを供給するように構成されたガス射出アセンブリと、
前記処理チャンバに連結され、前記処理チャンバを少なくとも10atmの圧力に維持するように構成されたポンプ装置と、
を備える複数の処理チャンバ
を備える、システム。
(態様9)
前記ポンプ装置が、前記処理チャンバを約10atmと20atmの間の圧力に維持するように構成されている、態様8に記載のシステム。
(態様10)
前記処理チャンバのうちの少なくとも1つが、
前記チャンバ本体の温度を制御するように構成された温度制御装置をさらに備える、態様8に記載のシステム。
(態様11)
前記温度制御装置が前記チャンバ本体内に形成された冷却チャネルであり、前記冷却チャネルは前記チャンバ本体を通して熱伝導流体を流すように構成されている、態様10に記載のシステム。
(態様12)
前記処理チャンバのうちの少なくとも1つが、
前記処理チャンバの端部に位置する単一のチャンバドアであって、前記基板支持装置を進入及び退出させるように構成された単一のチャンバドア
をさらに備える、態様8のシステム。
(態様13)
前記ガス射出アセンブリが、前記石英エンベロープの内部空間に対してNH 3 ガスを供給する、態様8に記載のシステム。
(態様14)
前記1つ以上の基板が、上に形成された二酸化ケイ素(SiO 2 )層を含む、態様8に記載のシステム。
(態様15)
半導体構造を形成する方法であって、
基板表面上に酸化物層を形成することと、
前記酸化物層内に少なくとも部分的に延びているビアを、酸化物層内に形成することと、
前記酸化物層をNH 3 に曝露することと、
前記酸化物層をNH 3 に曝露している間、チャンバの圧力を少なくとも10atmに維持することとを含む、
方法。
Claims (8)
- 半導体構造を形成する方法であって、
チャンバの内部空間に配置された石英エンベロープに基板を位置付けることであって、前記基板はその上に形成された酸化物層を有する表面を有し、前記酸化物層は少なくともその中に部分的に広がるビアを有する、基板を位置付けることと、
前記石英エンベロープの内部にNH 3 の流れを導入することであって、
NH 3 を前記チャンバの前記内部空間に配置されたガス注入アセンブリに供給することと、
前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、その後ある流量で前記石英エンベロープの内部に流すことと、
前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、前記石英エンベロープの内部に流す間、前記内部空間を少なくとも10atmのある圧力に維持することとを含む、前記石英エンベロープの内部にNH 3 の流れを導入することとを有する方法。 - 前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、その後前記石英エンベロープの内部に流す間、前記内部空間を少なくとも600℃のある温度に維持することをさらに含む、請求項1に記載の方法。
- 前記酸化物層が前記基板上に、化学気相堆積(CVD)、急速熱CVD(RT−CVD)、プラズマCVD(PECVD)、物理的気相堆積(PVD)及び原子層堆積(ALD)の少なくとも一つによって堆積される、請求項1に記載の方法。
- 半導体構造を形成する方法であって、
チャンバの内部空間に配置された石英エンベロープに基板を位置付けることであって、前記基板はその上に形成された酸化物層を有する表面を有し、前記酸化物層は少なくともその中に部分的に広がるビアを有する、基板を位置付けることと、
前記石英エンベロープの内部にNH 3 の流れを導入することであって、
NH 3 を前記チャンバの前記内部空間に配置されたガス注入アセンブリに供給することと、
前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、その後ある流量で前記石英エンベロープの内部に流すことと、
前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、その後前記石英エンベロープの内部に流す間、前記内部空間を少なくとも600℃のある温度に維持することと、
前記NH 3 を前記石英エンベロープの外側の前記内部空間に流して、その後前記石英エンベロープの内部に流す間、前記内部空間を少なくとも10atmのある圧力に維持することとを含む、前記石英エンベロープの内部にNH 3 の流れを導入することとを有する方法。 - 前記ある温度が約1000℃である、請求項2または4に記載の方法。
- 前記ある圧力が約10atmと20atmとの間に維持される、請求項1または4に記載の方法。
- 前記ある流量が1slmと20slmとの間にある、請求項1または4に記載の方法。
- 前記酸化物層が酸化ケイ素を含む、請求項1または4に記載の方法。
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