JP5498808B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 115
- 239000004065 semiconductor Substances 0.000 title claims description 73
- 238000000034 method Methods 0.000 claims description 74
- 238000004140 cleaning Methods 0.000 claims description 42
- 239000002184 metal Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 39
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 35
- 238000005530 etching Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- 238000000206 photolithography Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000620 organic polymer Polymers 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 2
- 238000001039 wet etching Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 102
- 229910004298 SiO 2 Inorganic materials 0.000 description 19
- 230000015572 biosynthetic process Effects 0.000 description 15
- 238000004380 ashing Methods 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 9
- 238000007747 plating Methods 0.000 description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01L21/70—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
- H01L21/76807—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 for dual damascene structures
- H01L21/76808—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 for dual damascene structures involving intermediate temporary filling with material
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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
- H01L21/02041—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
- H01L21/30—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
-
- 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
- H01L21/70—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
- H01L21/76807—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 for dual damascene structures
- H01L21/76811—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 for dual damascene structures involving multiple stacked pre-patterned 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
- H01L21/70—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
- H01L21/76807—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 for dual damascene structures
- H01L21/76813—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 for dual damascene structures involving a partial via etch
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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
- H01L21/70—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
-
- 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
- H01L21/70—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
- H01L21/76804—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 by forming tapered via holes
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
図1(A)〜(L)は、本実施形態の半導体装置の製造方法の一例を示す製造工程断面図である。以下、図1(A)〜(L)を用いて、本実施形態の半導体装置の製造方法の一例について説明する。
まず、基板上に形成された低誘電率絶縁膜の直上に、ハードマスクとして第1の金属膜またはシリコン膜を形成する。
上記ハードマスク形成工程の後、フォトリソグラフィーとエッチングにより、ハードマスクおよび低誘電率絶縁膜を貫く開口を形成する。
上記開口形成工程の後、開口内を洗浄する。
洗浄工程の後、ハードマスクを除去する。
ハードマスク除去工程の後、低誘電率絶縁膜の直上に、開口を埋める第2の金属膜を形成する。
実施形態1では、ビアファースト法による例を示したが、本実施形態では、トレンチファースト法による例を示す。
まず、基板上に形成された低誘電率絶縁膜の直上に、ハードマスクとして第1の金属膜またはシリコン膜を形成する。
上記ハードマスク形成工程の後、フォトリソグラフィーとエッチングにより、ハードマスクおよび低誘電率絶縁膜を貫く開口を形成する。
上記開口形成工程の後、開口内を洗浄する。
以下、参考形態の例を付記する。
1. 基板上に形成された酸化シリコンより誘電率の低い低誘電率絶縁膜の直上に、ハードマスクとして第1の金属膜またはシリコン膜を形成するハードマスク形成工程と、
フォトリソグラフィーとエッチングにより、前記ハードマスクおよび前記低誘電率絶縁膜を貫く開口を形成する開口形成工程と、
前記開口内を洗浄する洗浄工程と、
前記洗浄工程の後、前記ハードマスクを除去するハードマスク除去工程と、
前記ハードマスク除去工程の後、前記低誘電率絶縁膜の直上に、前記開口を埋める第2の金属膜を形成する金属膜形成工程と、
を有する半導体装置の製造方法。
2. 1に記載の半導体装置の製造方法において、
前記第1の金属膜は、Ti、TiN、W、WN、WSi、Al、AlN、Ta、TaN、Ru、RuN、Co、CoN、Si、Cr、および、CrNの中のいずれかである半導体装置の製造方法。
3. 1または2に記載の半導体装置の製造方法において、
前記低誘電率絶縁膜は、多孔質の絶縁膜である半導体装置の製造方法。
4. 1から3のいずれか一に記載の半導体装置の製造方法において、
前記低誘電率絶縁膜は、SiCOH、HSQ、MSQ、および、有機ポリマーの中のいずれかである半導体装置の製造方法。
5. 1から4のいずれか一に記載の半導体装置の製造方法において、
前記洗浄工程は、
前記開口内の側壁に形成されたダメージ層を除去する工程である半導体装置の製造方法。
6. 5に記載の半導体装置の製造方法において、
前記洗浄工程は、洗浄液を用いたウェットエッチングである半導体装置の製造方法。
202 第1のCu配線
203 第1のSiCN膜
204 第2のp−SiCOH
205 TiN膜
206 第1の下層レジスト
207 反射防止膜
208 第1の上層レジスト
209 ダメージ層
210 第2の下層レジスト
211 LTO膜
212 第2の上層レジスト
213 バリアメタル
214 Cu膜
215 第2のCu配線
216 第2のSiCN膜
217 第3のp−SiCOH
218 第3のCu配線
219 第3のSiCN膜
220 第2の反射防止膜
301 第1のp−SiCOH
302 第1のCu配線
303 第1のSiCN膜
304 第2のp−SiCOH
305 TiN膜
306 第1の下層レジスト
307 第1の反射防止膜
308 第1の上層レジスト
309 ダメージ層
310 第2の下層レジスト
311 第2の反射防止膜
312 第2の上層レジスト
313 ダメージ層
314 ダメージ層
315 バリアメタル
316 Cu膜
317 第2のCu配線
318 第2のSiCN膜
319 第3のp−SiCOH
320 第3のCu配線
321 第3のSiCN膜
A ひさし部
Claims (6)
- 基板上に形成された酸化シリコンより誘電率の低い低誘電率絶縁膜の直上に、ハードマスクとして第1の金属膜またはシリコン膜を形成するハードマスク形成工程と、
フォトリソグラフィーとエッチングにより、前記ハードマスクおよび前記低誘電率絶縁膜を貫く開口を形成する開口形成工程と、
前記開口内の側壁に形成されたダメージ層を、前記ハードマスクよりも前記ダメージ層のほうがエッチングされやすいエッチング条件で除去する洗浄工程と、
前記洗浄工程の後、前記ハードマスクを除去するハードマスク除去工程と、
前記ハードマスク除去工程の後、前記低誘電率絶縁膜の直上に、前記開口を埋める第2の金属膜を形成する金属膜形成工程と、
を有する半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法において、
前記第1の金属膜は、Ti、TiN、W、WN、WSi、Al、AlN、Ta、TaN、Ru、RuN、Co、CoN、Cr、および、CrNの中のいずれかである半導体装置の製造方法。 - 請求項1または2に記載の半導体装置の製造方法において、
前記低誘電率絶縁膜は、多孔質の絶縁膜である半導体装置の製造方法。 - 請求項1から3のいずれか一に記載の半導体装置の製造方法において、
前記低誘電率絶縁膜は、SiCOH、HSQ、MSQ、および、有機ポリマーの中のいずれかである半導体装置の製造方法。 - 請求項1から4のいずれか一に記載の半導体装置の製造方法において、
前記洗浄工程は、
前記開口内の側壁に形成されたダメージ層を除去する工程である半導体装置の製造方法。 - 請求項5に記載の半導体装置の製造方法において、
前記洗浄工程は、洗浄液を用いたウェットエッチングである半導体装置の製造方法。
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JP2010017245A JP5498808B2 (ja) | 2010-01-28 | 2010-01-28 | 半導体装置の製造方法 |
US13/013,433 US8748314B2 (en) | 2010-01-28 | 2011-01-25 | Method of manufacturing a semiconductor device |
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JP2010017245A JP5498808B2 (ja) | 2010-01-28 | 2010-01-28 | 半導体装置の製造方法 |
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JP5498808B2 true JP5498808B2 (ja) | 2014-05-21 |
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JP2012015197A (ja) * | 2010-06-29 | 2012-01-19 | Tokyo Electron Ltd | 半導体装置の配線形成方法、半導体装置の製造方法および半導体装置の配線形成システム |
US8349718B2 (en) * | 2011-03-24 | 2013-01-08 | Kabushiki Kaisha Toshiba | Self-aligned silicide formation on source/drain through contact via |
US8461683B2 (en) * | 2011-04-01 | 2013-06-11 | Intel Corporation | Self-forming, self-aligned barriers for back-end interconnects and methods of making same |
JP5376685B2 (ja) | 2011-07-13 | 2013-12-25 | Necビッグローブ株式会社 | コンテンツデータ表示装置、コンテンツデータ表示方法及びプログラム |
KR102003523B1 (ko) | 2012-08-17 | 2019-07-24 | 삼성전자주식회사 | 금속 플러그를 포함하는 반도체 장치 및 그 제조 방법 |
JP5936507B2 (ja) * | 2012-09-27 | 2016-06-22 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP6186780B2 (ja) * | 2013-03-18 | 2017-08-30 | 富士通株式会社 | 半導体装置およびその製造方法 |
US8809185B1 (en) | 2013-07-29 | 2014-08-19 | Tokyo Electron Limited | Dry etching method for metallization pattern profiling |
US9524902B2 (en) * | 2013-12-12 | 2016-12-20 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method of forming integrated circuit with conductive line having line-ends |
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KR102356754B1 (ko) * | 2017-08-02 | 2022-01-27 | 삼성전자주식회사 | 반도체 장치 |
US10784151B2 (en) * | 2018-09-11 | 2020-09-22 | Taiwan Semiconductor Manufacturing Company Ltd. | Interconnect structure and manufacturing method for the same |
CN109545741B (zh) * | 2018-12-05 | 2020-11-24 | 上海华力集成电路制造有限公司 | 钨填充凹槽结构的方法 |
US11164780B2 (en) * | 2019-06-07 | 2021-11-02 | Applied Materials, Inc. | Process integration approach for selective metal via fill |
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