JP2023516866A - トレンチ構造内の選択的タングステン堆積 - Google Patents
トレンチ構造内の選択的タングステン堆積 Download PDFInfo
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- JP2023516866A JP2023516866A JP2022542970A JP2022542970A JP2023516866A JP 2023516866 A JP2023516866 A JP 2023516866A JP 2022542970 A JP2022542970 A JP 2022542970A JP 2022542970 A JP2022542970 A JP 2022542970A JP 2023516866 A JP2023516866 A JP 2023516866A
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- trench
- tungsten film
- sidewalls
- metal material
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 49
- 239000010937 tungsten Substances 0.000 title claims abstract description 49
- 230000008021 deposition Effects 0.000 title description 5
- 238000000034 method Methods 0.000 claims abstract description 92
- 238000000151 deposition Methods 0.000 claims abstract description 18
- 239000007769 metal material Substances 0.000 claims description 53
- 206010053487 Exposure to toxic agent Diseases 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000001312 dry etching Methods 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 238000001039 wet etching Methods 0.000 claims description 2
- 239000003989 dielectric material Substances 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 description 49
- 239000000758 substrate Substances 0.000 description 41
- 239000000463 material Substances 0.000 description 14
- 238000012546 transfer Methods 0.000 description 10
- 230000015654 memory Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000000356 contaminant Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 238000005137 deposition process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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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
- H01L21/02—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
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
- H01L21/28562—Selective deposition
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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
- H01L21/70—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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- 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
- H01L21/76829—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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- H01L21/00—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
- H01L21/76838—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
- H01L21/76849—Barrier, adhesion or liner layers formed in openings in a dielectric the layer being positioned on top of the main fill metal
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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
- H01L21/76838—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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- H01L21/71—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
- H01L21/76838—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
- H01L21/76883—Post-treatment or after-treatment of the conductive material
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53242—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being a noble metal, e.g. gold
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- H01L23/53257—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being a refractory metal
- H01L23/53266—Additional layers associated with refractory-metal layers, e.g. adhesion, barrier, cladding layers
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Abstract
Description
Claims (20)
- 金属材料からなるラインを凹ませて、底面および2つの側壁を有するトレンチを形成するステップであって、前記トレンチが、前記金属材料を含む前記底面までの深さ、および誘電体を含む前記2つの側壁間の幅を有する、ステップと、
タングステン膜を陥凹金属材料の上に、前記2つの側壁によって側方に境界を定めて選択的に堆積するステップと
を含む、堆積方法。 - 前記金属材料が、銅、コバルト、タングステンまたはルテニウムのうちの1つ以上を含む、請求項1に記載の方法。
- 前記誘電体が、酸化ケイ素、窒化ケイ素、またはこれらの組み合わせを含む、請求項1に記載の方法。
- 前記金属材料からなる前記ラインをウェットエッチングプロセスによって凹ませる、請求項1に記載の方法。
- 前記金属材料からなる前記ラインをドライエッチングプロセスによって凹ませる、請求項1に記載の方法。
- 前記トレンチが3nm~200nmの範囲内の深さを有する、請求項1に記載の方法。
- 前記トレンチが1:1~20:1の範囲内のアスペクト比を有する、請求項6に記載の方法。
- 前記タングステン膜を選択的に堆積させるステップが、前記トレンチをWF6およびH2へ曝露するステップを含む、請求項1に記載の方法。
- 金属材料を含む底面と、誘電体を含む2つの側壁とを有するトレンチを複数の化学曝露に曝して、前記金属材料の表面および前記誘電体の表面を洗浄するステップと、
タングステン膜を前記金属材料の前記洗浄された面に選択的に堆積させるステップと
を含む、選択的堆積方法。 - 前記複数の化学曝露がプラズマ曝露を含む、請求項9に記載の方法。
- 前記複数の化学曝露がH2プラズマ曝露およびO2プラズマ曝露を含む、請求項10に記載の方法。
- 前記複数の化学曝露が熱浸漬を含む、請求項9に記載の方法。
- 前記複数の化学曝露がAr、H2、O2またはWF6への曝露を含む、請求項9に記載の方法。
- 前記複数の化学曝露が20℃~400℃の範囲内の温度で実施される、請求項9に記載の方法。
- 前記タングステン膜が、前記複数の化学曝露を行わずに実施された同様のプロセスの少なくとも1000倍大きい選択性によって堆積される、請求項9に記載の方法。
- 前記タングステン膜は粗さが1nm以下である、請求項9に記載の方法。
- 前記タングステン膜は粒径が10nm以下である、請求項9に記載の方法。
- 金属材料からなるラインを凹ませて、底面および2つの側壁を有するトレンチを形成するステップであって、前記トレンチが、前記金属材料を含む前記底面までの深さ、および誘電体を含む前記2つの側壁間の幅を有する、ステップと、
前記トレンチを複数の化学曝露に曝して前記金属材料の表面および前記誘電体の表面を洗浄するステップと、
タングステン膜を前記金属材料の前記洗浄された面に選択的に堆積するステップと
を含む、堆積方法。 - 前記タングステン膜が前記トレンチの完全に内側に堆積される、請求項18に記載の方法。
- 前記タングステン膜が前記トレンチを充填する、請求項18に記載の方法。
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US17/110,826 | 2020-12-03 | ||
US17/110,826 US11515200B2 (en) | 2020-12-03 | 2020-12-03 | Selective tungsten deposition within trench structures |
PCT/US2021/061808 WO2022120167A1 (en) | 2020-12-03 | 2021-12-03 | Selective tungsten deposition within trench structures |
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JP2023516866A true JP2023516866A (ja) | 2023-04-21 |
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US (1) | US11515200B2 (ja) |
JP (1) | JP2023516866A (ja) |
KR (1) | KR20220116254A (ja) |
CN (1) | CN115004336A (ja) |
WO (1) | WO2022120167A1 (ja) |
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US20240327991A1 (en) * | 2023-03-30 | 2024-10-03 | Applied Materials, Inc. | Low-k and tantalum nitride barrier recovery using a soak process |
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- 2021-12-03 CN CN202180010141.XA patent/CN115004336A/zh active Pending
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TW202237878A (zh) | 2022-10-01 |
WO2022120167A1 (en) | 2022-06-09 |
US11515200B2 (en) | 2022-11-29 |
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