JP5986591B2 - コンタクト洗浄のための方法 - Google Patents
コンタクト洗浄のための方法 Download PDFInfo
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- JP5986591B2 JP5986591B2 JP2013557775A JP2013557775A JP5986591B2 JP 5986591 B2 JP5986591 B2 JP 5986591B2 JP 2013557775 A JP2013557775 A JP 2013557775A JP 2013557775 A JP2013557775 A JP 2013557775A JP 5986591 B2 JP5986591 B2 JP 5986591B2
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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
- H01L21/302—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
- H01L21/3065—Plasma etching; Reactive-ion etching
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- H—ELECTRICITY
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- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
- H01L21/02063—Cleaning during device manufacture during, before or after processing of insulating layers the processing being the formation of vias or contact holes
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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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
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- 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
- H01L21/302—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
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76814—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics post-treatment or after-treatment, e.g. cleaning or removal of oxides on underlying conductors
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76829—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
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Description
504 処理チャンバ内でエッチング停止層エッチング工程を実施する。
506 同じチャンバ内で自然酸化物除去工程を実施する。
506a コンタクト誘電体層の側壁上にポリマー層を形成する。
506b エッチング工程を実施し、基板上の自然酸化物をエッチングして除去する。
506c 灰化工程を実施して、基板上に残っている残存ポリマー層を除去する。
508 障壁層堆積及び金属堆積を実施して、コンタクト金属被覆工程を完了する。
Claims (22)
- 基板上に配置された表面から酸化物を除去するための方法であって、
前記基板が配置される真空処理チャンバ内にハロゲン化炭素ガス又はハロゲン化炭化水素ガスを供給することによって前記基板のシリコン又はゲルマニウムのうちの少なくとも一方を含む表面上に形成された酸化物層上にポリマー層を形成する段階と、
前記ポリマー層を、前記酸化物層と反応して気相副生成物を形成するように活性化する段階と、
灰化工程を実施して、前記基板から前記ポリマー層を除去する段階と、
を含む方法。 - 前記ポリマー層を活性化する段階は、真空処理チャンバ内に不活性ガスを供給する段階を更に含む、請求項1に記載の方法。
- 前記灰化工程を実施する段階は、真空処理チャンバ内に無酸素水素含有ガスを供給する段階を更に含む、請求項1に記載の方法。
- 前記ポリマー層を活性化する段階は、前記不活性ガスを供給する間に、前記処理チャンバにRFバイアス電力を供給する段階を更に含む、請求項2に記載の方法。
- 前記ハロゲン化炭化水素ガスは、CH2F2である、請求項1に記載の方法。
- 前記表面は、金属ケイ化物である、請求項1に記載の方法。
- 前記酸化物は、GeOxである、請求項1に記載の方法。
- 基板上にコンタクト構造を形成するための方法であって、
ポリマーガス混合物を真空処理チャンバ内に供給して、コンタクト誘電体層を貫通して形成された開口部を通じて露出される、シリコン又はゲルマニウムのうちの少なくとも一方を含む表面上に存在する酸化物層上にポリマー層を形成する段階と、
前記ポリマー層を前記酸化物層と反応させて気相副生成物を形成することによって金属ケイ化物層上に形成された前記酸化物層を除去するためにエッチングガス混合物を供給する段階と、
灰化工程を実施して、前記基板上に残っている前記ポリマー層を除去する段階と、
を含む方法。 - 前記ポリマーガス混合物を供給する段階は、前記コンタクト誘電体層の頂部、前記コンタクト誘電体層の前記開口部の側壁、及び前記金属ケイ化物層の表面上に前記ポリマー層を形成する段階を更に含む、請求項8に記載の方法。
- 前記コンタクト誘電体層の前記頂部の上に形成される前記ポリマー層は、前記金属ケイ化物層の前記表面上に形成される前記ポリマー層の厚みよりも約100パーセントと約300パーセントとの間だけ厚い厚みを有する、請求項9に記載の方法。
- 前記ポリマーガス混合物は、CH2F2、CF4、CHF3、CF3(CF2)5(CH2)2SiCl3、CH3F、及びC4F8からなる群から選択されるハロゲン化炭素ガス又はハロゲン化炭化水素ガスを含む、請求項8に記載の方法。
- 前記エッチングガス混合物を供給する段階は、前記エッチングガス混合物を前記真空処理チャンバ内に供給する間に、前記基板にRFバイアス電力を供給する段階を更に含む、請求項8に記載の方法。
- 前記エッチングガス混合物は、不活性ガスを含む、請求項8に記載の方法。
- 前記金属ケイ化物層と前記コンタクト誘電体層との間に、エッチング停止層が配置される、請求項8に記載の方法。
- 前記表面は、金属ケイ化物である、請求項8に記載の方法。
- 前記酸化物は、GeOxである、請求項8に記載の方法。
- 基板上にコンタクト構造を形成するための方法であって、
真空処理チャンバ内に配置された基板上に形成されたエッチング停止層をエッチングして、前記エッチング停止層の下に形成された下層の、シリコン又はゲルマニウムのうちの少なくとも一方を含む表面上に形成された酸化物層を露出させる段階と、
前記下層の表面上に形成された酸化物層を、同じ真空処理チャンバ内で除去する段階と、
を含み、
前記下層の表面上に形成された酸化物層を除去する段階は、
前記下層の表面上に形成された酸化物層上にポリマー層を形成する段階であって、前記真空処理チャンバ内にハロゲン化炭素ガス又はハロゲン化炭化水素ガスを含むポリマーガス混合物を供給することを含む、前記ポリマー層を形成する段階と、
前記ポリマー層を、前記酸化物層と反応するように活性化する段階と、
灰化工程を実施して、前記基板から前記ポリマーを除去する段階と、
を含む方法。 - 前記エッチング停止層をエッチングする段階は、CH2F2、CF4、CHF3、CF3(CF2)5(CH2)2SiCl3、CH3F、又はC4F8を含むエッチング停止層エッチングガス混合物を供給する段階を更に含む、請求項17に記載の方法。
- 前記ポリマーガス混合物は、CH2F2、CF4、CHF3、CF3(CF2)5(CH2)2SiCl3、CH3F、又はC4F8を含む、請求項17に記載の方法。
- 前記ポリマー層を酸化物層と反応するように活性化する段階は、前記ポリマー層を活性化する間に、前記基板にRFバイアス電力を供給する段階を更に含む、請求項17に記載の方法。
- 前記下層は、金属ケイ化物である、請求項17に記載の方法。
- 前記酸化物は、GeOxである、請求項17に記載の方法。
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