JP5122106B2 - 炭素含有膜エッチング方法及びこれを利用した半導体素子の製造方法 - Google Patents
炭素含有膜エッチング方法及びこれを利用した半導体素子の製造方法 Download PDFInfo
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- 238000005530 etching Methods 0.000 title claims description 128
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 98
- 229910052799 carbon Inorganic materials 0.000 title claims description 97
- 239000004065 semiconductor Substances 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000010410 layer Substances 0.000 claims description 92
- 239000007789 gas Substances 0.000 claims description 85
- 238000000034 method Methods 0.000 claims description 34
- 229920000642 polymer Polymers 0.000 claims description 22
- 239000011229 interlayer Substances 0.000 claims description 20
- 239000006227 byproduct Substances 0.000 claims description 17
- 229910004018 SiF Inorganic materials 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 11
- 210000002381 Plasma Anatomy 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 8
- 238000001020 plasma etching Methods 0.000 claims description 5
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000000206 photolithography Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 2
- 230000000149 penetrating Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 2
- XCCANNJCMHMXBZ-UHFFFAOYSA-N hydroxyiminosilicon Chemical compound ON=[Si] XCCANNJCMHMXBZ-UHFFFAOYSA-N 0.000 claims 1
- 238000000059 patterning Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 229920002120 photoresistant polymer Polymers 0.000 description 16
- 238000001878 scanning electron micrograph Methods 0.000 description 11
- 229910020160 SiON Inorganic materials 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N Fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 125000004435 hydrogen atoms Chemical class [H]* 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 101710008329 AMAT Proteins 0.000 description 1
- -1 N 2 Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 125000004429 atoms Chemical group 0.000 description 1
- 210000004027 cells Anatomy 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- TWXTWZIUMCFMSG-UHFFFAOYSA-N nitride(3-) Chemical compound [N-3] TWXTWZIUMCFMSG-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atoms Chemical group O* 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
- H01L21/0214—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC the material being a silicon oxynitride, e.g. SiON or SiON:H
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02362—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment formation of intermediate layers, e.g. capping layers or diffusion barriers
Description
110 層間絶縁膜
110a 層間絶縁膜パターン
120 炭素含有膜
120a 炭素含有膜パターン
120h ホール
130 キャッピング層
130a、320、420 キャッピング層パターン
140 有機反射防止膜
140a 有機反射防止膜パターン
150 フォトレジストパターン
160 混合ガス
170、330、430 ポリマー副産物層
310、410 ACLパターン
B 底部
Claims (12)
- 炭素及び水素を含む炭素含有膜上に前記炭素含有膜の上面を一部露出させるマスクパターンを形成する段階と、
前記マスクパターンをエッチングマスクとして利用して、O2、及びSi含有ガスからなる混合ガスのプラズマによって前記炭素含有膜を異方性エッチングして、炭素含有膜パターンを形成する段階とを含み、
前記混合ガスは、その総量を基準に50〜95体積%のO 2 と、5〜50体積%のSi含有ガスからなることを特徴とする炭素含有膜エッチング方法。 - 前記Si含有ガスは、SiF4、SiCl4、SiH4、及びSiClxFy(x+y=4)からなる群から選択されるいずれか一つ、またはその組み合わせからなることを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 前記混合ガスは、N2及び非活性ガスのうちから選択される少なくとも一つの物質をさらに含むことを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 前記混合ガスは、前記O2の総量を基準に0〜100体積%のN2と、前記O2の総量を基準に0〜50体積%の非活性ガスを更に含むこと(但し、N2及び非活性ガスの含有量が同時に0ではない)を特徴とする請求項3に記載の炭素含有膜エッチング方法。
- 前記非活性ガスは、Ar、He、Xe、及びKrからなる群から選択されるいずれか一つであることを特徴とする請求項3に記載の炭素含有膜エッチング方法。
- 前記混合ガスは、CxFy(x,yはそれぞれ定数)系ガスをさらに含むことを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 前記CxFy系ガスは、前記混合ガスの総量を基準に10体積%未満の量で含まれることを特徴とする請求項6に記載の炭素含有膜エッチング方法。
- 前記炭素含有膜は、ACL、SiLK、NCP、及びAHMからなる群から選択されるいずれか一つからなることを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 前記炭素含有膜パターンが形成された後、前記炭素含有膜パターン及び前記マスクパターン上に存在するポリマー副産物を、CF4、Cl2、またはこれらの組み合わせからなるガスを利用するプラズマエッチング工程によって除去する段階をさらに含むことを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 前記マスクパターンは、シリコン酸化膜、シリコン酸化窒化膜、Si、SiGe、またはこれらの組み合わせからなることを特徴とする請求項1に記載の炭素含有膜エッチング方法。
- 半導体基板上に層間絶縁膜を形成する段階と、
前記層間絶縁膜上に炭素及び水素を含む炭素含有膜を形成する段階と、
前記炭素含有膜上にキャッピング層を形成する段階と、
フォトリソグラフィ工程を利用して前記キャッピング層をパターニングして、前記炭素含有膜の上面を一部露出させるキャッピング層パターンを形成する段階と、
前記キャッピング層パターンをエッチングマスクとして、O2、及びSi含有ガスからなる混合ガスのプラズマによって、前記炭素含有膜を異方性エッチングして炭素含有膜パターンを形成する段階と、
前記炭素含有膜パターンをエッチングマスクとして、前記層間絶縁膜を異方性エッチングして、前記層間絶縁膜を貫通するコンタクトホールを形成する段階とを含み、
前記混合ガスは、その総量を基準に50〜95体積%のO 2 と、5〜50体積%のSi含有ガスとからなることを特徴とする半導体素子の製造方法。 - 前記Si含有ガスは、SiF4、SiCl4、SiH4、及びSiClxFy(x+y=4)からなる群から選択されるいずれか一つ、またはその組み合わせからなることを特徴とする請求項11に記載の半導体素子の製造方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2005-0096164 | 2005-10-12 | ||
KR1020050096164A KR100780944B1 (ko) | 2005-10-12 | 2005-10-12 | 탄소함유막 식각 방법 및 이를 이용한 반도체 소자의 제조방법 |
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JP2007110112A JP2007110112A (ja) | 2007-04-26 |
JP2007110112A5 JP2007110112A5 (ja) | 2009-11-19 |
JP5122106B2 true JP5122106B2 (ja) | 2013-01-16 |
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US (1) | US7494934B2 (ja) |
JP (1) | JP5122106B2 (ja) |
KR (1) | KR100780944B1 (ja) |
CN (1) | CN100570830C (ja) |
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JP2002093778A (ja) * | 2000-09-11 | 2002-03-29 | Toshiba Corp | 有機膜のエッチング方法およびこれを用いた半導体装置の製造方法 |
US6835663B2 (en) * | 2002-06-28 | 2004-12-28 | Infineon Technologies Ag | Hardmask of amorphous carbon-hydrogen (a-C:H) layers with tunable etch resistivity |
KR20040003652A (ko) * | 2002-07-03 | 2004-01-13 | 주식회사 하이닉스반도체 | 반도체 소자의 게이트 형성 방법 |
US20040079726A1 (en) * | 2002-07-03 | 2004-04-29 | Advanced Micro Devices, Inc. | Method of using an amorphous carbon layer for improved reticle fabrication |
JP2004031892A (ja) | 2002-12-27 | 2004-01-29 | Fujitsu Ltd | アモルファスカーボンを用いた半導体装置の製造方法 |
KR100510558B1 (ko) * | 2003-12-13 | 2005-08-26 | 삼성전자주식회사 | 패턴 형성 방법 |
US7115524B2 (en) * | 2004-05-17 | 2006-10-03 | Micron Technology, Inc. | Methods of processing a semiconductor substrate |
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CN100570830C (zh) | 2009-12-16 |
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US20070082483A1 (en) | 2007-04-12 |
CN1956154A (zh) | 2007-05-02 |
US7494934B2 (en) | 2009-02-24 |
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