JP7203515B2 - 連続した堆積-エッチング-処理方法を使用した酸化ケイ素及び窒化ケイ素のボトムアップ成長 - Google Patents
連続した堆積-エッチング-処理方法を使用した酸化ケイ素及び窒化ケイ素のボトムアップ成長 Download PDFInfo
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- JP7203515B2 JP7203515B2 JP2018105767A JP2018105767A JP7203515B2 JP 7203515 B2 JP7203515 B2 JP 7203515B2 JP 2018105767 A JP2018105767 A JP 2018105767A JP 2018105767 A JP2018105767 A JP 2018105767A JP 7203515 B2 JP7203515 B2 JP 7203515B2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 14
- 229910052814 silicon oxide Inorganic materials 0.000 title claims description 14
- 229910052581 Si3N4 Inorganic materials 0.000 title claims description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 title claims description 12
- 238000003672 processing method Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims description 76
- 239000000758 substrate Substances 0.000 claims description 66
- 230000008569 process Effects 0.000 claims description 42
- 238000000151 deposition Methods 0.000 claims description 32
- 238000005530 etching Methods 0.000 claims description 27
- 230000008021 deposition Effects 0.000 claims description 24
- 229910052710 silicon Inorganic materials 0.000 claims description 23
- 239000010703 silicon Substances 0.000 claims description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 20
- 239000012686 silicon precursor Substances 0.000 claims description 18
- 239000000376 reactant Substances 0.000 claims description 11
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 150000004756 silanes Chemical class 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 claims description 4
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 210000002381 plasma Anatomy 0.000 description 47
- 239000000463 material Substances 0.000 description 17
- 238000011282 treatment Methods 0.000 description 15
- 229910052786 argon Inorganic materials 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 229910052734 helium Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000011049 filling Methods 0.000 description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 150000002429 hydrazines Chemical class 0.000 description 2
- 239000011261 inert gas 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
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000004151 rapid thermal annealing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- -1 silicon halide Chemical class 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 229910007264 Si2H6 Inorganic materials 0.000 description 1
- 229910003818 SiH2Cl2 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000003848 UV Light-Curing Methods 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001227 electron beam curing Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 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
- 229910052736 halogen Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—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
- H01L21/76837—Filling up the space between adjacent conductive structures; Gap-filling properties of dielectrics
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76227—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials the dielectric materials being obtained by full chemical transformation of non-dielectric materials, such as polycristalline silicon, metals
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- Plasma & Fusion (AREA)
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Description
Claims (15)
- 基板内に形成される複数の特徴を有する基板表面を有する基板を提供することであって、各特徴が、前記基板表面からある距離だけ延び、底部及び少なくとも一の側壁を有する、基板を提供すること;
第1の膜が前記特徴の前記底部及び前記特徴の前記側壁の上部のみに生じるように、前記第1の膜を少なくとも一の前記特徴に堆積させること;
前記第1の膜を前記特徴の前記側壁からエッチングすること;及び
前記特徴の前記底部の前記第1の膜を処理して、前記特徴に第2の膜を形成すること
を含む方法。 - 前記第1の膜がケイ素を含む、請求項1に記載の方法。
- 前記第2の膜が酸化ケイ素、窒化ケイ素又はオキシ窒化ケイ素のうちの一又は複数を含む、請求項2に記載の方法。
- 前記第1の膜を堆積させることが、前記基板表面をケイ素前駆体及び反応物に曝露させることを含む、請求項3に記載の方法。
- 前記ケイ素前駆体が、シラン、ジシラン、トリシラン、テトラシラン、高次シラン又はジクロロシランのうちの一又は複数を含む、請求項4に記載の方法。
- 前記反応物が水素又は窒素のうちの一又は複数を含む、請求項5に記載の方法。
- 前記反応物がプラズマを含む、請求項6に記載の方法。
- 前記第1の膜を前記側壁からエッチングすることが、前記基板をH2、HCl又はCl2のうちの一又は複数に曝露させることを含む、請求項3に記載の方法。
- 前記第1の膜をエッチングすることがプラズマを含む、請求項8に記載の方法。
- 前記第1の膜を処理することが、前記第1の膜をO 2、N2O、O3又はH2Oのうちの一又は複数に曝露させて、酸化ケイ素を含む第2の膜を形成することを含む、請求項3に記載の方法。
- 前記第1の膜を処理することが、前記第1の膜をプラズマに曝露させることを含む、請求項10に記載の方法。
- 前記第1の膜を処理することが、前記第1の膜をNH3 又はN2のうちの一又は複数に曝露させて、窒化ケイ素を含む第2の膜を形成することを含む、請求項3に記載の方法。
- 堆積、エッチング及び処理中のプロセス温度が、約100℃から約500℃の範囲である、請求項1に記載の方法。
- 前記堆積、エッチング及び処理を繰り返して、前記第2の膜で前記特徴を充填することをさらに含む、請求項1に記載の方法。
- 前記第1の膜が、エッチング前に、約0.01nmから約10nmの範囲の厚さで堆積される、請求項1に記載の方法。
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