JP2022504574A - 半導体デバイス内の凹状特徴部を低抵抗率金属で充填する方法 - Google Patents
半導体デバイス内の凹状特徴部を低抵抗率金属で充填する方法 Download PDFInfo
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- JP2022504574A JP2022504574A JP2021519654A JP2021519654A JP2022504574A JP 2022504574 A JP2022504574 A JP 2022504574A JP 2021519654 A JP2021519654 A JP 2021519654A JP 2021519654 A JP2021519654 A JP 2021519654A JP 2022504574 A JP2022504574 A JP 2022504574A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 319
- 239000002184 metal Substances 0.000 title claims abstract description 319
- 238000000034 method Methods 0.000 title claims abstract description 99
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- 150000004767 nitrides Chemical class 0.000 claims description 48
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- 229910052707 ruthenium Inorganic materials 0.000 claims description 6
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- -1 nitride metal oxide Chemical class 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
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- RZYHXKLKJRGJGP-UHFFFAOYSA-N 2,2,2-trifluoro-n,n-bis(trimethylsilyl)acetamide Chemical compound C[Si](C)(C)N([Si](C)(C)C)C(=O)C(F)(F)F RZYHXKLKJRGJGP-UHFFFAOYSA-N 0.000 description 2
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- OXJUCLBTTSNHOF-UHFFFAOYSA-N 5-ethylcyclopenta-1,3-diene;ruthenium(2+) Chemical compound [Ru+2].CC[C-]1C=CC=C1.CC[C-]1C=CC=C1 OXJUCLBTTSNHOF-UHFFFAOYSA-N 0.000 description 1
- XOSBQSGUNCVAIL-UHFFFAOYSA-N CC(=C[Ru]C1(C=CC=C1)CC)C=C(C)C Chemical compound CC(=C[Ru]C1(C=CC=C1)CC)C=C(C)C XOSBQSGUNCVAIL-UHFFFAOYSA-N 0.000 description 1
- KHGFCRAFGVKXQK-UHFFFAOYSA-N CC1(C=CC=C1)[Ru] Chemical compound CC1(C=CC=C1)[Ru] KHGFCRAFGVKXQK-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- ULBFTWVAASRDJF-UHFFFAOYSA-N [Si](C)(C)(C)C=1NC=CC1.C[Si](C)(C)C=1NC=CC1 Chemical compound [Si](C)(C)(C)C=1NC=CC1.C[Si](C)(C)C=1NC=CC1 ULBFTWVAASRDJF-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001343 alkyl silanes Chemical class 0.000 description 1
- 125000005376 alkyl siloxane group Chemical group 0.000 description 1
- FANANXQSVYPRCQ-UHFFFAOYSA-N azane;silicon Chemical class N.[Si] FANANXQSVYPRCQ-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- AHQMQQYLFHXPOE-UHFFFAOYSA-N decyl(dimethyl)silicon Chemical compound CCCCCCCCCC[Si](C)C AHQMQQYLFHXPOE-UHFFFAOYSA-N 0.000 description 1
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- 150000002367 halogens Chemical class 0.000 description 1
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- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical compound CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- QRPMCZNLJXJVSG-UHFFFAOYSA-N trichloro(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-henicosafluorodecyl)silane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)[Si](Cl)(Cl)Cl QRPMCZNLJXJVSG-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- 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
- H01L21/76834—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 formation of thin insulating films on the sidewalls or on top of conductors
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- H01L21/76838—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 conductors
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
- H01L21/76879—Filling of holes, grooves or trenches, e.g. vias, with conductive material by selective deposition of conductive material in the vias, e.g. selective C.V.D. on semiconductor material, plating
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- 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
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—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 conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
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- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76853—Barrier, adhesion or liner layers characterized by particular after-treatment steps
- H01L21/76855—After-treatment introducing at least one additional element into the layer
- H01L21/76856—After-treatment introducing at least one additional element into the layer by treatment in plasmas or gaseous environments, e.g. nitriding a refractory metal liner
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- H10B43/27—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels the channels comprising vertical portions, e.g. U-shaped channels
Abstract
Description
本出願は、2018年10月10日に出願された米国仮特許出願第62/744,038号に関連し、且つそれに対する優先権を主張するものであり、その内容全体が参照により本明細書に援用される。
Claims (22)
- 半導体デバイスを形成する方法であって、
第1の層内に形成された凹状特徴部及び前記凹状特徴部内に露出した第2の層を含むパターン化基板を提供することと、
前記第1の層上に対して前記第2の層上での金属堆積選択性を増大させる表面改質剤を用いて前記基板を前処理することと、
気相堆積によって前記基板上に金属層を堆積することであって、前記金属層が前記凹状特徴部内の前記第2の層上に優先的に堆積される、ことと、
前記凹状特徴部内の前記第1の層のフィールド領域上及び側壁上を含む、前記第1の層上に堆積した金属核を除去して、前記凹状特徴部内の前記第2の層上に前記金属層を選択的に形成することと、を含む、方法。 - 前記前処理、堆積、及び除去を少なくとも1回繰り返して、前記凹状特徴部内の前記金属層の厚さを増大させること、を更に含む、請求項1に記載の方法。
- 前記前処理が、前記第1の層上に自己組織化単分子膜(SAM)を形成することを含む、請求項1に記載の方法。
- 前記金属層が、Ru金属、Co金属、及びW金属からなる群から選択され、前記第2の層が、Cu金属、Ru金属、Co金属、W金属、及びそれらの組み合わせからなる群から選択される、請求項1に記載の方法。
- 半導体デバイスを形成する方法であって、
第1の層内に形成された凹状特徴部及び前記凹状特徴部内に露出した第2の層を含むパターン化基板を提供することと、
前記凹状特徴部内を含む前記基板上に金属含有層を堆積することと、
前記凹状特徴部の底部から、及び前記凹状特徴部の周囲のフィールド領域から、前記金属含有層を異方的に除去して、前記凹状特徴部の側壁上に前記金属含有層を形成することと、
前記第1の層上に対して、前記凹状特徴部の前記側壁上の前記金属含有層上、及び前記第2の層上での金属堆積選択性を増大させる表面改質剤を用いて前記基板を前処理することと、
気相堆積によって前記基板上に金属層を堆積することであって、前記金属層が、前記凹状特徴部の周囲の前記フィールド領域上に対して、前記凹状特徴部内の前記側壁上の前記金属含有層及び前記第2の層上に優先的に堆積される、ことと、
前記フィールド領域上に堆積した金属核を除去して、前記凹状特徴部内に前記金属層を選択的に形成することと、を含む、方法。 - 前記前処理、堆積、及び除去を少なくとも1回繰り返して、前記凹状特徴部内の前記金属層の厚さを増大させること、を更に含む、請求項5に記載の方法。
- 前記前処理が、前記第2の層上に自己組織化単分子膜(SAM)を形成することを含む、請求項5に記載の方法。
- 前記金属層が、Ru金属、Co金属、及びW金属からなる群から選択され、前記第2の層が、Cu金属、Ru金属、Co金属、W金属、及びそれらの組み合わせからなる群から選択される、請求項5に記載の方法。
- 前記金属含有層が、金属酸化物、金属窒化物、又はそれらの組み合わせを含む、請求項5に記載の方法。
- 前記金属酸化物が、Al2O3、TiO2、HfO2、又はMnO2を含み、前記金属窒化物が、AlN、TiN、HfN、又はMnNを含む、請求項5に記載の方法。
- 半導体デバイスを形成する方法であって、
材料内に形成された凹状特徴部を含むパターン化基板を提供することと、
前記凹状特徴部内、及び前記凹状特徴部の周囲のフィールド領域上を含む前記基板上に金属窒化物層を堆積することと、
前記フィールド領域上の前記金属窒化物層を酸化することと、
気相堆積によって前記基板上に金属層を堆積することであって、前記金属層が前記凹状特徴部内で酸化されない前記金属窒化物層上に優先的に堆積される、ことと、
前記フィールド領域上に堆積した金属核を除去して、前記凹状特徴部内に前記金属層を選択的に形成することと、含む、方法。 - 前記堆積及び除去を少なくとも1回繰り返して、前記凹状特徴部内の前記金属層の厚さを増大させること、を更に含む、請求項11に記載の方法。
- 前記金属層が、Ru金属、Co金属、及びW金属からなる群から選択される、請求項11に記載の方法。
- 前記金属窒化物層が、AlN、TiN、HfN、又はMnNを含む、請求項11に記載の方法。
- 半導体デバイスを形成する方法であって、
材料内に形成された凹状特徴部を含むパターン化基板を提供することと、
前記凹状特徴部内、及び前記凹状特徴部の周囲のフィールド領域上を含む前記基板上に金属酸化物層を堆積することと、
前記フィールド領域上及び前記凹状特徴部内の前記金属酸化物層を窒化することと、
前記フィールド領域上の前記窒化金属酸化物層を酸化することと、
気相堆積によって前記基板上に金属層を堆積することであって、前記金属層が前記凹状特徴部内で酸化されない前記窒化金属酸化物層上に優先的に堆積される、ことと、
前記フィールド領域上に堆積した金属核を除去して、前記凹状特徴部内に前記金属層を選択的に形成することと、含む、方法。 - 前記堆積及び除去を少なくとも1回繰り返して、前記凹状特徴部内の前記金属層の厚さを増大させること、を更に含む、請求項15に記載の方法。
- 前記金属層が、Ru金属、Co金属、及びW金属からなる群から選択される、請求項15に記載の方法。
- 前記金属酸化物層が、Al2O3、TiO2、HfO2、又はMnO2を含む、請求項15に記載の方法。
- 半導体デバイスを形成する方法であって、
材料内に形成された凹状特徴部を含むパターン化基板を提供することと、
前記凹状特徴部内、及び前記凹状特徴部の周囲のフィールド領域上を含む前記基板上に金属酸化物層を堆積することと、
前記フィールド領域上の前記金属酸化物層を窒化することと、
気相堆積によって前記基板上に金属層を堆積することであって、前記金属層が前記フィールド領域内の前記窒化金属酸化物層上に優先的に堆積される、ことと、
前記凹状特徴部内に堆積した金属核を除去して、前記フィールド領域上に前記金属層を選択的に形成することと、を含む、方法。 - 前記堆積及び除去を少なくとも1回繰り返して、前記フィールド領域上の前記金属層の厚さを増大させること、を更に含む、請求項19に記載の方法。
- 前記金属層が、Ru金属、Co金属、及びW金属からなる群から選択される、請求項19に記載の方法。
- 前記金属酸化物層が、Al2O3、TiO2、HfO2、又はMnO2を含む、請求項19に記載の方法。
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US20210287936A1 (en) | 2021-09-16 |
JP7406684B2 (ja) | 2023-12-28 |
US11621190B2 (en) | 2023-04-04 |
US11024535B2 (en) | 2021-06-01 |
TW202029286A (zh) | 2020-08-01 |
WO2020077112A1 (en) | 2020-04-16 |
CN112805818A (zh) | 2021-05-14 |
KR20210057185A (ko) | 2021-05-20 |
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