JP6163446B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
- Publication number
- JP6163446B2 JP6163446B2 JP2014066039A JP2014066039A JP6163446B2 JP 6163446 B2 JP6163446 B2 JP 6163446B2 JP 2014066039 A JP2014066039 A JP 2014066039A JP 2014066039 A JP2014066039 A JP 2014066039A JP 6163446 B2 JP6163446 B2 JP 6163446B2
- Authority
- JP
- Japan
- Prior art keywords
- etching
- film
- gas
- metal oxide
- lower layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 title claims description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000005530 etching Methods 0.000 claims description 196
- 238000000034 method Methods 0.000 claims description 90
- 229910044991 metal oxide Inorganic materials 0.000 claims description 78
- 150000004706 metal oxides Chemical class 0.000 claims description 78
- 230000008569 process Effects 0.000 claims description 72
- 239000007789 gas Substances 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 35
- 239000011261 inert gas Substances 0.000 claims description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 21
- 238000001020 plasma etching Methods 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 claims description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims description 10
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- BCCOBQSFUDVTJQ-UHFFFAOYSA-N octafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(F)C1(F)F BCCOBQSFUDVTJQ-UHFFFAOYSA-N 0.000 claims description 7
- 235000019407 octafluorocyclobutane Nutrition 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 5
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- LGPPATCNSOSOQH-UHFFFAOYSA-N 1,1,2,3,4,4-hexafluorobuta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)F LGPPATCNSOSOQH-UHFFFAOYSA-N 0.000 claims description 2
- 229910018503 SF6 Inorganic materials 0.000 claims description 2
- QKCGXXHCELUCKW-UHFFFAOYSA-N n-[4-[4-(dinaphthalen-2-ylamino)phenyl]phenyl]-n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(N(C=3C=CC(=CC=3)C=3C=CC(=CC=3)N(C=3C=C4C=CC=CC4=CC=3)C=3C=C4C=CC=CC4=CC=3)C3=CC4=CC=CC=C4C=C3)=CC=C21 QKCGXXHCELUCKW-UHFFFAOYSA-N 0.000 claims description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 24
- 239000001257 hydrogen Substances 0.000 description 23
- 229910052739 hydrogen Inorganic materials 0.000 description 23
- 239000000758 substrate Substances 0.000 description 18
- 229910052786 argon Inorganic materials 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000001965 increasing effect Effects 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 8
- 229920005591 polysilicon Polymers 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 150000002431 hydrogen Chemical class 0.000 description 7
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- -1 for example Chemical compound 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- PSNPEOOEWZZFPJ-UHFFFAOYSA-N alumane;yttrium Chemical compound [AlH3].[Y] PSNPEOOEWZZFPJ-UHFFFAOYSA-N 0.000 description 2
- IVHJCRXBQPGLOV-UHFFFAOYSA-N azanylidynetungsten Chemical compound [W]#N IVHJCRXBQPGLOV-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- YUCFVHQCAFKDQG-UHFFFAOYSA-N fluoromethane Chemical compound F[CH] YUCFVHQCAFKDQG-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical group 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
-
- 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
- H01L21/31105—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—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
- H01L21/302—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—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
- H01L21/302—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
- H01L21/30655—Plasma etching; Reactive-ion etching comprising alternated and repeated etching and passivation steps, e.g. Bosch process
-
- 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
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
- H01L21/31122—Etching inorganic layers by chemical means by dry-etching of layers not containing Si, e.g. PZT, Al2O3
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/031—Manufacture or treatment of data-storage electrodes
- H10D64/035—Manufacture or treatment of data-storage electrodes comprising conductor-insulator-conductor-insulator-semiconductor structures
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Drying Of Semiconductors (AREA)
- Electrodes Of Semiconductors (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
- ing And Chemical Polishing (AREA)
Description
以下、実施形態について、図面を参照して説明する。なお、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは必ずしも一致しない。また、上下左右の方向についても、後述する半導体基板における回路形成面側を上とした場合の相対的な方向を示し、必ずしも重力加速度方向を基準としたものとは一致しない。
第1処理においては、以下の条件を用いたRIE法によるエッチングが施される。すなわち、エッチングガスとして三塩化ホウ素(BCl3)ガスを用い、エッチング装置のバイアスパワーを下層膜12のエッチング閾値エネルギー未満の領域(以下、低バイアス領域という)となるように設定する。エッチング装置としては、例えば誘導結合型(ICP:Inductively Coupled Plasma)エッチング装置を用いることができる。
図2(a)及び(b)は、金属膜16をエッチングした後、金属酸化物14がエッチングされていく様子を示している。第2エッチングにおけるエッチング対象は金属酸化物14である。
図3(a)は、第1処理におけるエッチングの実験内容を詳細に示す図である。図3(a)において、横軸はエッチング装置のバイアスパワーであり、左側縦軸はエッチングレートを示している。右側縦軸はエッチングの選択比を示している。
上述のように、第2処理において、不活性ガスに、弗素を含むガス及び水素ガスを添加した場合には、水素流量比のほぼ全域にわたり難エッチング材料を含む金属酸化物14としてのLaAlSiOxのエッチングレートが大きくなる。
上記に説明した実施形態では、プラズマエッチング装置として誘導結合型を例示して説明したが、これに限らず、容量結合(CCP:Capacitive Coupled Plasma)型、ECR (electron cyclotron resonance;電子サイクロトロン共鳴)型、ヘリコン波型又はその他の方式のプラズマエッチング装置を用いることができる。
Claims (4)
- 実質的に酸素を含まない材料による第1膜と、前記第1膜上に形成されランタン、イットリウム、マグネシウム、鉄、コバルト、ニッケル、バリウムの少なくとも何れかを含む金属酸化物による第2膜と、を有する積層膜のうち、前記第2膜を、反応性イオンエッチング法を用いてエッチングする方法であって、
エッチングガスとして三塩化ホウ素を含むガスを用いる第1処理と、
エッチングガスとして不活性ガスを用い、バイアスパワーを前記第2膜のエッチング閾値エネルギー以上とする第2処理と、を交互に複数回繰り返し行うことと、
前記第2膜が除去され、前記第1膜が露出した後には、前記第1膜上に前記第1処理に基づく堆積物が形成されており、前記第2処理の加工時間は、前記第2処理によるエッチングによって膜減りする前記堆積物が残存する範囲の時間に制御されること、を特徴とする半導体装置の製造方法。 - 前記第2処理におけるエッチングガスは、不活性ガス、弗素を含有するガス、及び水素ガスの混合ガスであることを特徴とする請求項1に記載の半導体装置の製造方法。
- 実質的に酸素を含まない材料による第1膜と、前記第1膜上に形成されランタン、イットリウム、マグネシウム、鉄、コバルト、ニッケル、バリウムの少なくとも何れかを含む金属酸化物による第2膜と、を有する積層膜のうち、前記第2膜を、反応性イオンエッチング法を用いてエッチングする方法であって、
エッチングガスとして三塩化ホウ素を含むガスを用いる第1処理と、
エッチングガスとして不活性ガス、弗素を含有するガス、及び水素ガスの混合ガスを用い、バイアスパワーを前記第2膜のエッチング閾値エネルギー以上とする第2処理と、を交互に複数回繰り返し行うことを特徴とする半導体装置の製造方法。 - 前記弗素を含有するガスは、四フッ化メタン、トリフルオロメタン、ジフルオロメタン、フルオロメタン、ヘキサフルオロ1,3ブタジエン、パーフルオロシクロブタン、三フッ化窒素、六フッ化硫黄の少なくとも何れかを含むことを特徴とする請求項2又は3に記載の半導体装置の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014066039A JP6163446B2 (ja) | 2014-03-27 | 2014-03-27 | 半導体装置の製造方法 |
US14/644,908 US9343331B2 (en) | 2014-03-27 | 2015-03-11 | Method of manufacturing semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014066039A JP6163446B2 (ja) | 2014-03-27 | 2014-03-27 | 半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015191922A JP2015191922A (ja) | 2015-11-02 |
JP6163446B2 true JP6163446B2 (ja) | 2017-07-12 |
Family
ID=54191412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014066039A Active JP6163446B2 (ja) | 2014-03-27 | 2014-03-27 | 半導体装置の製造方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9343331B2 (ja) |
JP (1) | JP6163446B2 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102228330B1 (ko) * | 2017-03-24 | 2021-03-16 | 가부시키가이샤 알박 | 에칭 스톱층 및 반도체 디바이스의 제조 방법 |
JP6980406B2 (ja) | 2017-04-25 | 2021-12-15 | 株式会社日立ハイテク | 半導体製造装置及び半導体装置の製造方法 |
WO2018236358A1 (en) * | 2017-06-20 | 2018-12-27 | Intel Corporation | Double patterning enabled by sputter defined ion implant features |
JP6936700B2 (ja) | 2017-10-31 | 2021-09-22 | 株式会社日立ハイテク | 半導体製造装置及び半導体装置の製造方法 |
CN107946231B (zh) * | 2017-11-22 | 2020-06-16 | 上海华力微电子有限公司 | 一种FDSOI器件SOI和bulk区域浅槽形貌优化方法 |
US10460988B2 (en) * | 2017-12-21 | 2019-10-29 | Tokyo Electron Limited | Removal method and processing method |
JP7133975B2 (ja) * | 2018-05-11 | 2022-09-09 | 東京エレクトロン株式会社 | エッチング方法およびエッチング装置 |
US11380523B2 (en) | 2019-02-14 | 2022-07-05 | Hitachi High-Tech Corporation | Semiconductor manufacturing apparatus |
CN111154490A (zh) * | 2020-01-02 | 2020-05-15 | 长江存储科技有限责任公司 | 刻蚀气体、刻蚀方法及3d存储器件制造方法 |
US11488835B2 (en) * | 2020-11-20 | 2022-11-01 | Applied Materials, Inc. | Systems and methods for tungsten-containing film removal |
US20230223268A1 (en) * | 2022-01-10 | 2023-07-13 | Applied Materials, Inc. | BIAS VOLTAGE MODULATION APPROACH FOR SiO/SiN LAYER ALTERNATING ETCH PROCESS |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1921902B1 (en) * | 1996-12-19 | 2011-03-02 | Ibiden Co., Ltd. | Multilayered printed circuit board |
JP4448607B2 (ja) | 2000-09-21 | 2010-04-14 | 株式会社ユポ・コーポレーション | 多層樹脂延伸フィルム |
US6451647B1 (en) * | 2002-03-18 | 2002-09-17 | Advanced Micro Devices, Inc. | Integrated plasma etch of gate and gate dielectric and low power plasma post gate etch removal of high-K residual |
US6955992B2 (en) * | 2003-09-30 | 2005-10-18 | Sharp Laboratories Of America, Inc. | One mask PT/PCMO/PT stack etching process for RRAM applications |
US20050081781A1 (en) * | 2003-10-17 | 2005-04-21 | Taiwan Semiconductor Manufacturing Co. | Fully dry, Si recess free process for removing high k dielectric layer |
US20060019451A1 (en) * | 2004-07-22 | 2006-01-26 | Jeng-Huey Hwang | Method for patterning hfo2-containing dielectric |
US20070056925A1 (en) * | 2005-09-09 | 2007-03-15 | Lam Research Corporation | Selective etch of films with high dielectric constant with H2 addition |
EP1780779A3 (en) * | 2005-10-28 | 2008-06-11 | Interuniversitair Microelektronica Centrum ( Imec) | A plasma for patterning advanced gate stacks |
US8722547B2 (en) * | 2006-04-20 | 2014-05-13 | Applied Materials, Inc. | Etching high K dielectrics with high selectivity to oxide containing layers at elevated temperatures with BC13 based etch chemistries |
US8183161B2 (en) * | 2006-09-12 | 2012-05-22 | Tokyo Electron Limited | Method and system for dry etching a hafnium containing material |
KR20080076173A (ko) * | 2007-02-15 | 2008-08-20 | 삼성전자주식회사 | 금속 산화막 패턴 형성 방법 및 이를 이용한 반도체 소자의형성 방법 |
US7820552B2 (en) * | 2007-03-13 | 2010-10-26 | International Business Machines Corporation | Advanced high-k gate stack patterning and structure containing a patterned high-k gate stack |
JP2009021584A (ja) * | 2007-06-27 | 2009-01-29 | Applied Materials Inc | 高k材料ゲート構造の高温エッチング方法 |
JP2009076711A (ja) * | 2007-09-21 | 2009-04-09 | Hitachi High-Technologies Corp | 半導体装置の製造方法 |
KR101566029B1 (ko) * | 2008-04-10 | 2015-11-05 | 램 리써치 코포레이션 | High-k 유전체 재료의 선택적 에칭 |
US8304349B2 (en) * | 2008-08-18 | 2012-11-06 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method to integrate gate etching as all-in-one process for high K metal gate |
JP2010206050A (ja) | 2009-03-05 | 2010-09-16 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法及び基板処理装置 |
JP2011100822A (ja) * | 2009-11-05 | 2011-05-19 | Hitachi High-Technologies Corp | 半導体素子加工方法 |
CN102214563B (zh) * | 2010-04-09 | 2013-03-13 | 中国科学院微电子研究所 | 一种金属栅极/高k栅介质叠层结构的制备和成形方法 |
US8664125B2 (en) * | 2011-12-23 | 2014-03-04 | Tokyo Electron Limited | Highly selective spacer etch process with reduced sidewall spacer slimming |
US9171736B2 (en) * | 2014-03-03 | 2015-10-27 | Tokyo Electron Limited | Spacer material modification to improve K-value and etch properties |
-
2014
- 2014-03-27 JP JP2014066039A patent/JP6163446B2/ja active Active
-
2015
- 2015-03-11 US US14/644,908 patent/US9343331B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2015191922A (ja) | 2015-11-02 |
US20150279697A1 (en) | 2015-10-01 |
US9343331B2 (en) | 2016-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6163446B2 (ja) | 半導体装置の製造方法 | |
US9721807B2 (en) | Cyclic spacer etching process with improved profile control | |
CN101335208B (zh) | 制造具有电荷俘获层的非易失性存储器元件的方法 | |
US20160307772A1 (en) | Spacer formation process with flat top profile | |
US11515400B2 (en) | Semiconductor structure and fabrication method thereof | |
CN104517904B (zh) | 存储器件及其制造方法 | |
KR102496547B1 (ko) | 반도체 디바이스 제조 방법 | |
CN108155192B (zh) | 半导体器件及其形成方法 | |
CN107204339B (zh) | 隔离结构的形成方法和半导体结构的形成方法 | |
TWI607573B (zh) | 半導體結構的製造方法 | |
CN104979295A (zh) | 嵌入式分栅闪存器件的制造方法 | |
JP6386133B2 (ja) | ラップアラウンド接点集積方式 | |
TW201030893A (en) | Method for forming isolation layer and method for fabricating nonvolatile memory device using the same | |
CN105632908B (zh) | 半导体结构形成方法 | |
CN107579001A (zh) | 半导体器件的形成方法 | |
CN108807377B (zh) | 半导体器件及其形成方法 | |
CN106910741A (zh) | 半导体装置及其制造方法 | |
TWI656580B (zh) | 凹入特徵部中之膜的由下而上沉積方法 | |
CN104701262A (zh) | 一种半导体器件的形成方法 | |
US10811504B2 (en) | Semiconductor structure for flash memory cells and method of making same | |
CN107731919B (zh) | 半导体结构及其形成方法 | |
KR20100076568A (ko) | 전하트랩형 비휘발성 메모리 장치 제조 방법 | |
CN106486424B (zh) | 半导体器件的形成方法 | |
CN117712039A (zh) | 半导体结构的形成方法 | |
JP2009253245A (ja) | 半導体装置の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20160218 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20161219 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170110 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20170126 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20170523 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20170619 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 6163446 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |