JP7576040B2 - 高エッチング選択性かつ低応力のアッシャブルカーボンハードマスク - Google Patents
高エッチング選択性かつ低応力のアッシャブルカーボンハードマスク Download PDFInfo
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- JP7576040B2 JP7576040B2 JP2021557313A JP2021557313A JP7576040B2 JP 7576040 B2 JP7576040 B2 JP 7576040B2 JP 2021557313 A JP2021557313 A JP 2021557313A JP 2021557313 A JP2021557313 A JP 2021557313A JP 7576040 B2 JP7576040 B2 JP 7576040B2
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
- H01L21/3083—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/3086—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31144—Etching the insulating layers by chemical or physical means using masks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32139—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer using masks
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Description
本開示は、2019年3月25日出願の米国特許出願第62/823,211号のPCT国際出願である。上記出願の全ての開示は、参照により本明細書に援用される。
[適用例1]
基板上にカーボンアッシャブルハードマスク層を堆積するための方法であって、
(a)処理チャンバ内に基板を配置する工程と、
(b)チャンバ圧を所定圧力範囲内に設定する工程と、
(c)基板温度を-20℃から200℃の所定温度範囲内に設定する工程と、
(d)炭化水素前駆体および1つ以上の他のガスを含むガス混合物を供給する工程と、
(e)第1所定期間にRFプラズマ電力を供給することによりプラズマを発生させて、前記基板上にカーボンアッシャブルハードマスク層を堆積する工程と、
を含む、方法。
[適用例2]
適用例1に記載の方法であって、
前記処理チャンバは、誘導結合プラズマチャンバである、方法。
[適用例3]
適用例2に記載の方法であって、
(e)における前記RFプラズマ電力は、30Wから3000Wの範囲の第1電力レベルで供給され、
さらに、前記第1所定期間中に、0Wよりも大きく1000Wまでの範囲の第2電力レベルでRFバイアス電力を供給する工程を含む、方法。
[適用例4]
適用例1に記載の方法であって、さらに、
(f)前記第1所定期間の後に、前記炭化水素前駆体の流れを停止する工程と、
(g)応力を低減するために前記基板上で基板処理を行う工程と、
を含む、方法。
[適用例5]
適用例4に記載の方法であって、さらに、
前記カーボンアッシャブルハードマスクの前記堆積および前記基板処理を、さらに1回以上行う工程を含む、方法。
[適用例6]
適用例4に記載の方法であって、
前記カーボンアッシャブルハードマスクの前記堆積は、堆積/処理期間の30%から95%を構成し、前記基板処理は、前記堆積/処理期間の70%から5%を構成する、方法。
[適用例7]
適用例4に記載の方法であって、
前記カーボンアッシャブルハードマスクの前記堆積および前記基板処理は、0.05Hzから1000Hzの範囲の周波数で繰り返される、方法。
[適用例8]
適用例4に記載の方法であって、
(g)は、
(g1)不活性ガス混合物を供給する工程と、
(g2)前記第1電力レベルよりも低い第3電力レベルで前記RFプラズマ電力を供給する工程と、
(g3)前記第2電力レベルよりも低い第4電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。
[適用例9]
適用例8に記載の方法であって、
(g)は、さらに、
(g4)前記第4電力レベルにおける第2所定期間の後、第3所定期間に前記第4電力レベルよりも高い第5電力レベルで前記RFバイアス電力を供給する工程と、
(g5)前記第3所定期間の後、第4所定期間に前記第4電力レベルよりも低い第6電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。
[適用例10]
適用例9に記載の方法であって、さらに、
(c)から(g5)を1回以上繰り返す工程を含む、方法。
[適用例11]
適用例10に記載の方法であって、
前記第3電力レベルは、0Wから500Wの範囲であり、
前記第4電力レベルは、30Wから1000Wの範囲であり、
前記第5電力レベルは、100Wから1500Wの範囲であり、
前記第6電力レベルは、30Wから1000Wの範囲である、方法。
[適用例12]
適用例1に記載の方法であって、
前記所定温度範囲は、0℃から80℃である、方法。
[適用例13]
適用例1に記載の方法であって、
前記所定圧力範囲は、5mTから450mTである、方法。
[適用例14]
適用例1に記載の方法であって、
前記所定圧力範囲は、5mTから35mTである、方法。
[適用例15]
適用例1に記載の方法であって、
前記処理チャンバは、容量結合プラズマチャンバである、方法。
[適用例16]
基板上にカーボンアッシャブルハードマスク層を堆積するための方法であって、
(a)処理チャンバ内に基板を配置する工程と、
(b)チャンバ圧を所定圧力範囲内に設定する工程と、
(c)基板温度を所定温度範囲内に設定する工程と、
(d)炭化水素前駆体および1つ以上のガスを含むガス混合物を供給する工程と、
(e)第1所定期間にRFプラズマ電力を供給することによりプラズマを発生させて、カーボンアッシャブルハードマスク層を堆積する工程と、
(f)前記第1所定期間の後に、前記炭化水素前駆体の流れを停止する工程と、
(g)応力を低減するために前記基板上で基板処理を行う工程と、
を含む、方法。
[適用例17]
適用例16に記載の方法であって、さらに、
前記カーボンアッシャブルハードマスクの前記堆積および前記基板処理をさらに1回以上行う工程を含む、方法。
[適用例18]
適用例17に記載の方法であって、
前記カーボンアッシャブルハードマスクの前記堆積は、堆積/処理期間の30%から95%について行われ、前記基板処理は、前記堆積/処理期間の70%から5%について行われる、方法。
[適用例19]
適用例17に記載の方法であって、
前記カーボンアッシャブルハードマスクの前記堆積および前記基板処理は、0.05Hzから1000Hzの範囲の周波数で繰り返される、方法。
[適用例20]
適用例16に記載の方法であって、
(g)は、
(g1)不活性ガス混合物を供給する工程と、
(g2)前記第1電力レベルよりも低い第3電力レベルで前記RFプラズマ電力を供給する工程と、
(g3)前記第2電力レベルよりも低い第4電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。
[適用例21]
適用例20に記載の方法であって、
(g)は、さらに、
(g4)前記第4電力レベルにおける第2所定期間の後、第3所定期間に前記第4電力レベルよりも高い第5電力レベルで前記RFバイアス電力を供給する工程と、
(g5)前記第3所定期間の後、第4所定期間に前記第4電力レベルよりも低い第6電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。
[適用例22]
適用例21に記載の方法であって、
(e)における前記RFプラズマ電力は、30Wから3000Wの範囲の第1電力レベルで供給され、
さらに、前記第1所定期間に0Wよりも大きく1000Wまでの範囲の第2電力レベルでRFバイアス電力を供給する工程を含む、方法。
[適用例23]
適用例21に記載の方法であって、さらに、
(c)から(g5)を1回以上繰り返す工程を含む、方法。
[適用例24]
適用例21に記載の方法であって、
前記第3電力レベルは、0Wから500Wの範囲であり、
前記第4電力レベルは、30Wから1000Wの範囲であり、
前記第5電力レベルは、100Wから1500Wの範囲であり、
前記第6電力レベルは、30Wから1000Wの範囲である、方法。
[適用例25]
適用例16に記載の方法であって、
前記所定温度範囲は、0℃から80℃である、方法。
[適用例26]
適用例16に記載の方法であって、
前記所定圧力範囲は、5mTから450mTである、方法。
[適用例27]
適用例16に記載の方法であって、
前記所定圧力範囲は、5mTから35mTである、方法。
[適用例28]
適用例16に記載の方法であって、
前記処理チャンバは、容量結合プラズマチャンバである、方法。
Claims (28)
- 基板上にカーボンアッシャブルハードマスク層を堆積するための方法であって、
(a)処理チャンバ内に前記基板を配置する工程と、
(b)チャンバ圧を所定圧力範囲内に設定する工程と、
(c)基板温度を-20℃から200℃の所定温度範囲内に設定する工程と、
(d)炭化水素前駆体および1つ以上の他のガスを含むガス混合物を供給する工程と、
(e)第1所定期間に第1電力レベルでRFプラズマ電力を供給し、かつ、前記第1所定期間に第2電力レベルでRFバイアス電力を供給することによって、プラズマを発生させて、前記基板上に前記カーボンアッシャブルハードマスク層を堆積する工程と、
(f)前記第1所定期間の後に、前記炭化水素前駆体の流れを停止する工程と、
(g)応力を低減するために前記基板上で基板処理を行う工程と、
を含み、
(g)は、
(g1)不活性ガス混合物を供給する工程と、
(g2)前記第1電力レベルよりも低い第3電力レベルで前記RFプラズマ電力を供給する工程と、
(g3)前記第2電力レベルよりも低い第4電力レベルで前記RFバイアス電力を供給する工程と、
を含む、
方法。 - 請求項1に記載の方法であって、
前記処理チャンバは、誘導結合プラズマチャンバである、方法。 - 請求項1に記載の方法であって、
(e)における前記RFプラズマ電力は、30Wから3000Wの範囲で供給され、
(e)における前記RFバイアス電力は、0Wよりも大きく1000Wまでの範囲で供給される、方法。 - 請求項1に記載の方法であって、さらに、
前記カーボンアッシャブルハードマスク層の前記堆積および前記基板処理を、さらに1回以上行う工程を含む、方法。 - 請求項1に記載の方法であって、
前記カーボンアッシャブルハードマスク層の前記堆積は、堆積/処理期間の30%から95%を構成し、前記基板処理は、前記堆積/処理期間の70%から5%を構成する、方法。 - 請求項1に記載の方法であって、
前記カーボンアッシャブルハードマスク層の前記堆積および前記基板処理は、0.05Hzから1000Hzの範囲の周波数で繰り返される、方法。 - 請求項1に記載の方法であって、
(g)は、さらに、
(g4)前記第4電力レベルにおける第2所定期間の後、第3所定期間に前記第4電力レベルよりも高い第5電力レベルで前記RFバイアス電力を供給する工程と、
(g5)前記第3所定期間の後、第4所定期間に前記第4電力レベルよりも低い第6電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。 - 請求項7に記載の方法であって、さらに、
(c)から(g5)を1回以上繰り返す工程を含む、方法。 - 請求項8に記載の方法であって、
前記第3電力レベルは、0Wから500Wの範囲であり、
前記第4電力レベルは、30Wから1000Wの範囲であり、
前記第5電力レベルは、100Wから1500Wの範囲であり、
前記第6電力レベルは、30Wから1000Wの範囲である、方法。 - 請求項1に記載の方法であって、
前記所定温度範囲は、0℃から80℃である、方法。 - 請求項1に記載の方法であって、
前記所定圧力範囲は、5mTから450mTである、方法。 - 請求項1に記載の方法であって、
前記所定圧力範囲は、5mTから35mTである、方法。 - 請求項1に記載の方法であって、
前記処理チャンバは、容量結合プラズマチャンバである、方法。 - 基板上にカーボンアッシャブルハードマスク層を堆積するための方法であって、
(a)処理チャンバ内に前記基板を配置する工程と、
(b)チャンバ圧を所定圧力範囲内に設定する工程と、
(c)基板温度を所定温度範囲内に設定する工程と、
(d)炭化水素前駆体および1つ以上のガスを含むガス混合物を供給する工程と、
(e)第1所定期間に第1電力レベルでRFプラズマ電力を供給し、かつ、前記第1所定期間に第2電力レベルでRFバイアス電力を供給することによりプラズマを発生させて、前記カーボンアッシャブルハードマスク層を堆積する工程と、
(f)前記第1所定期間の後に、前記炭化水素前駆体の流れを停止する工程と、
(g)応力を低減するために前記基板上で基板処理を行う工程と、
を含み、
(g)は、
(g1)不活性ガス混合物を供給する工程と、
(g2)前記第1電力レベルよりも低い第3電力レベルで前記RFプラズマ電力を供給する工程と、
(g3)前記第2電力レベルよりも低い第4電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。 - 請求項14に記載の方法であって、さらに、
前記カーボンアッシャブルハードマスク層の前記堆積および前記基板処理をさらに1回以上行う工程を含む、方法。 - 請求項15に記載の方法であって、
前記カーボンアッシャブルハードマスク層の前記堆積は、堆積/処理期間の30%から95%について行われ、前記基板処理は、前記堆積/処理期間の70%から5%について行われる、方法。 - 請求項15に記載の方法であって、
前記カーボンアッシャブルハードマスク層の前記堆積および前記基板処理は、0.05Hzから1000Hzの範囲の周波数で繰り返される、方法。 - 請求項14に記載の方法であって、
(e)における前記RFプラズマ電力は、30Wから3000Wの範囲で供給され、
(e)における前記RFバイアス電力は、0Wよりも大きく1000Wまでの範囲で供給される、方法。 - 請求項14に記載の方法であって、
(g)は、さらに、
(g4)前記第4電力レベルにおける第2所定期間の後、第3所定期間に前記第4電力レベルよりも高い第5電力レベルで前記RFバイアス電力を供給する工程と、
(g5)前記第3所定期間の後、第4所定期間に前記第4電力レベルよりも低い第6電力レベルで前記RFバイアス電力を供給する工程と、
を含む、方法。 - 請求項19に記載の方法であって、さらに、
(c)から(g5)を1回以上繰り返す工程を含む、方法。 - 請求項19に記載の方法であって、
前記第3電力レベルは、0Wから500Wの範囲であり、
前記第4電力レベルは、30Wから1000Wの範囲であり、
前記第5電力レベルは、100Wから1500Wの範囲であり、
前記第6電力レベルは、30Wから1000Wの範囲である、方法。 - 請求項14に記載の方法であって、
前記所定温度範囲は、0℃から80℃である、方法。 - 請求項14に記載の方法であって、
前記所定圧力範囲は、5mTから450mTである、方法。 - 請求項14に記載の方法であって、
前記所定圧力範囲は、5mTから35mTである、方法。 - 請求項14に記載の方法であって、
前記処理チャンバは、容量結合プラズマチャンバである、方法。 - 請求項1に記載の方法であって、
(g)は、前記基板上で前記基板処理を行いながら前記プラズマを維持する工程を含む、方法。 - 請求項1に記載の方法であって、
(g)は、前記基板上で前記基板処理を行いながら前記プラズマを消弧する工程を含む、方法。 - 請求項1に記載の方法であって、
(g)は、
前記プラズマを消弧する工程と、
前記RFバイアス電力を供給する工程と、
を含む、方法。
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KR20220002748A (ko) * | 2019-05-29 | 2022-01-06 | 램 리써치 코포레이션 | 고 전력 펄싱된 저 주파수 rf에 의한 고 선택도, 저 응력, 및 저 수소 다이아몬드-유사 탄소 하드 마스크들 |
JP7638727B2 (ja) * | 2021-02-22 | 2025-03-04 | 東京エレクトロン株式会社 | 基板処理方法及び基板処理装置 |
US20230187220A1 (en) * | 2021-12-10 | 2023-06-15 | Nanya Technology Corporation | Method for preparing semiconductor structure |
JP2024126187A (ja) * | 2023-03-07 | 2024-09-20 | 東京エレクトロン株式会社 | 基板処理方法 |
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TW202449203A (zh) | 2024-12-16 |
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US20220181147A1 (en) | 2022-06-09 |
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KR20210132731A (ko) | 2021-11-04 |
JP2022527460A (ja) | 2022-06-02 |
US20240395542A1 (en) | 2024-11-28 |
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