JP6723227B2 - 自己整合代替フィン形成 - Google Patents
自己整合代替フィン形成 Download PDFInfo
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- JP6723227B2 JP6723227B2 JP2017514337A JP2017514337A JP6723227B2 JP 6723227 B2 JP6723227 B2 JP 6723227B2 JP 2017514337 A JP2017514337 A JP 2017514337A JP 2017514337 A JP2017514337 A JP 2017514337A JP 6723227 B2 JP6723227 B2 JP 6723227B2
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- 230000015572 biosynthetic process Effects 0.000 title description 9
- 239000000463 material Substances 0.000 claims description 158
- 238000000034 method Methods 0.000 claims description 140
- 239000000758 substrate Substances 0.000 claims description 94
- 238000005530 etching Methods 0.000 claims description 60
- 238000000151 deposition Methods 0.000 claims description 30
- 230000008021 deposition Effects 0.000 claims description 12
- 238000001020 plasma etching Methods 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 10
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 229910052732 germanium Inorganic materials 0.000 claims description 8
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 8
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 3
- 230000036961 partial effect Effects 0.000 description 36
- 238000005137 deposition process Methods 0.000 description 31
- 239000007789 gas Substances 0.000 description 19
- 239000002243 precursor Substances 0.000 description 19
- 238000000059 patterning Methods 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000002210 silicon-based material Substances 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 6
- 230000006911 nucleation Effects 0.000 description 6
- 238000010899 nucleation Methods 0.000 description 6
- 230000036962 time dependent Effects 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000001312 dry etching Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000002408 directed self-assembly Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OBOXTJCIIVUZEN-UHFFFAOYSA-N [C].[O] Chemical class [C].[O] OBOXTJCIIVUZEN-UHFFFAOYSA-N 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical class [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- -1 hydrogen oxygen compounds Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000000671 immersion lithography Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 229920003209 poly(hydridosilsesquioxane) Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823431—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- 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
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- H01L21/311—Etching the insulating layers by chemical or physical means
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- H01L21/845—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body including field-effect transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1203—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI
- H01L27/1211—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI combined with field-effect transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1054—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a variation of the composition, e.g. channel with strained layer for increasing the mobility
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66787—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
- H01L29/66795—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/785—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Drying Of Semiconductors (AREA)
- Thin Film Transistor (AREA)
- Recrystallisation Techniques (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
本開示の実施形態は、概して、フィン電界効果トランジスタ(FinFET)構造を形成するための方法及び装置に関する。より具体的には、本明細書に記載された実施形態は、自己整合代替フィン構造の形成に関する。
より高密度の回路を有するより小さな電子デバイスに対する必要性の増大に対応して、三次元(3D)構造を有するデバイスが開発されてきた。そのようなデバイスの一例は、水平方向に延在する基板の上方に鉛直方向に持ち上げられた導電性フィン様構造を有するFinFETを含むことができる。従来のFinFETは、基板(例えば、半導体基板又はシリコン・オン・インシュレータ基板)上に形成することができる。基板は、半導体基板と、半導体基板上に配置された酸化物層を含むことができる。
Claims (15)
- FinFET構造を形成する方法であって、
基板上に第1ピッチサイズを有する少なくとも第1マンドレル構造及び第2マンドレル構造を形成する工程であって、第1マンドレル構造及び第2マンドレル構造は、間に第1凹部を画定する工程と、
第1凹部内に第1フィン材料層をコンフォーマルに堆積する工程と、
第1マンドレル構造及び第2マンドレル構造を除去して、第1ピッチサイズより小さい第2ピッチサイズを有する少なくとも第1フィン構造及び第2フィン構造を形成する工程であって、第1マンドレル構造及び第2マンドレル構造を除去することで、1つ以上の第2凹部が形成される工程と、
第1フィン材料層及び基板の上に誘電体層を堆積する工程であって、誘電体層が1つ以上の第2凹部を充填するように、誘電体層は流動性CVDプロセスによって形成されている工程と、
誘電体層が第1フィン構造の上面と実質的に同一平面になるように、誘電体層を研磨する工程であって、第1フィン構造の上面をハードストップとして利用して、研磨終点を決定している工程とを含む方法。 - 第1ピッチサイズは25nm〜55nmである、請求項1記載の方法。
- 第2ピッチサイズは10nm〜30nmである、請求項2記載の方法。
- 第1マンドレル構造及び第2マンドレル構造は、シリコン、シリコンゲルマニウム、ゲルマニウム、及びIII−V材料からなる群から選択される材料から形成される、請求項1記載の方法。
- 第1フィン材料は、シリコン、シリコンゲルマニウム、ゲルマニウム、及びIII−V材料からなる群から選択される、請求項4記載の方法。
- 第1フィン材料はシリコンゲルマニウム材料である、請求項5記載の方法。
- 半導体デバイスを形成する方法であって、
基板上に側壁を有する複数のマンドレル構造を形成する工程と、
複数のマンドレル構造の側壁上に第1フィン材料を堆積させて複数の第1フィン構造を形成する工程と、
複数のマンドレル構造を除去する工程と、
複数の第1フィン構造の側壁上に第2フィン材料を堆積させて複数の第2フィン構造を形成する工程と、
複数の第1フィン構造を除去する工程と、
複数の第2フィン構造の領域上にマスクを堆積する工程と、
非マスク領域内の複数の第2フィン構造の側壁上に第3フィン材料を堆積させて複数の第3フィン構造を形成する工程と、
非マスク領域から複数の第2フィン構造を除去する工程と、
マスクを除去する工程とを含む方法。 - 複数のマンドレル構造はシリコンから形成される、請求項7記載の方法。
- 第1フィン材料はシリコンゲルマニウムを含む、請求項8記載の方法。
- 第2フィン材料はゲルマニウムを含む、請求項9記載の方法。
- 第3フィン材料はIII−V材料を含む、請求項10記載の方法。
- マスクは窒化ケイ素材料を含む、請求項7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材料除去チャンバ内で基板をエッチングして複数のマンドレル構造を形成する工程と、
第1材料堆積チャンバ内で基板上に第1フィン材料を堆積する工程と、
第1材料除去チャンバ内で複数のマンドレル構造を除去する工程と、
第2材料堆積チャンバ内で基板上に酸化物材料を堆積する工程と、
第1材料除去チャンバ内で酸化物材料の一部を除去する工程と、
第1材料堆積チャンバ内で基板上に第2フィン材料を堆積する工程と、
第2材料除去チャンバ内で第1フィン材料を除去する工程と、
第3材料堆積チャンバ内で基板上にマスク材料を堆積する工程と、
第1材料堆積チャンバ内で基板上に第3フィン材料を堆積する工程と、
第2材料除去チャンバ内で第2フィン材料を除去する工程と、
第3材料除去チャンバ内でマスク材料を除去する工程とを含む方法。 - 基板は、真空を破ることなく、第1材料除去チャンバ、第2材料除去チャンバ、及び第3材料除去チャンバの間で搬送される、請求項13記載の方法。
- 第1材料除去チャンバ、第2材料除去チャンバ、及び第3材料除去チャンバは、乾式プラズマエッチングプロセスを介して材料を選択的に除去するように構成され、第1フィン材料を堆積する工程、第2フィン材料を堆積する工程、及び第3フィン材料を堆積する工程は、エピタキシャル堆積チャンバ内で実行される、請求項13記載の方法。
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