JP5455626B2 - ボトムアップギャップ充填のための誘電堆積プロセスとエッチバックプロセス - Google Patents
ボトムアップギャップ充填のための誘電堆積プロセスとエッチバックプロセス Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 112
- 230000008569 process Effects 0.000 title claims description 23
- 238000011049 filling Methods 0.000 title description 11
- 238000005137 deposition process Methods 0.000 title description 6
- 238000000151 deposition Methods 0.000 claims description 88
- 239000000758 substrate Substances 0.000 claims description 74
- 230000008021 deposition Effects 0.000 claims description 46
- 238000000137 annealing Methods 0.000 claims description 43
- 239000002243 precursor Substances 0.000 claims description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 34
- 238000005530 etching Methods 0.000 claims description 31
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000001039 wet etching Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000001312 dry etching Methods 0.000 claims description 4
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 4
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 4
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 4
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- -1 DEMS Chemical compound 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical group O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- UCXUKTLCVSGCNR-UHFFFAOYSA-N diethylsilane Chemical compound CC[SiH2]CC UCXUKTLCVSGCNR-UHFFFAOYSA-N 0.000 claims description 2
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 claims description 2
- OIKHZBFJHONJJB-UHFFFAOYSA-N dimethyl(phenyl)silicon Chemical compound C[Si](C)C1=CC=CC=C1 OIKHZBFJHONJJB-UHFFFAOYSA-N 0.000 claims description 2
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical group C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- JPQBRSQJGWOTGC-UHFFFAOYSA-N methyl(silyloxysilyloxy)silane Chemical compound C[SiH2]O[SiH2]O[SiH3] JPQBRSQJGWOTGC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001272 nitrous oxide Substances 0.000 claims description 2
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 claims description 2
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 claims description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims 3
- 239000003929 acidic solution Substances 0.000 claims 3
- 239000003637 basic solution Substances 0.000 claims 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 150000002222 fluorine compounds Chemical class 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 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 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 150000004812 organic fluorine compounds Chemical class 0.000 claims 1
- 238000006303 photolysis reaction Methods 0.000 claims 1
- 239000003989 dielectric material Substances 0.000 description 55
- 230000009969 flowable effect Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 229910052814 silicon oxide Inorganic materials 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 7
- 238000000635 electron micrograph Methods 0.000 description 6
- 238000004151 rapid thermal annealing Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 150000002221 fluorine Chemical class 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000001227 electron beam curing Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000012686 silicon precursor Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007521 mechanical polishing technique Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- 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
- H01L21/70—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
-
- 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
- H01L21/70—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
- H01L21/76229—Concurrent filling of a plurality of trenches having a different trench shape or dimension, e.g. rectangular and V-shaped trenches, wide and narrow trenches, shallow and deep trenches
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Formation Of Insulating Films (AREA)
- Element Separation (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
Claims (36)
- ギャップを備えた基板上に誘電体層を形成する方法であって:
該ギャップを備えた基板上に第一誘電体膜を堆積させるステップと;
該第一誘電体膜にエッチングを行うことにより該第一誘電体膜の最上部を除去するステップと;
エッチングした第一膜の上に第二誘電体膜を堆積させるステップと;
該第二誘電体膜にエッチングを行うことにより該第二誘電体膜の最上部を除去するステップと;
該第一誘電体膜と該第二誘電体膜をアニールして、該誘電体層を形成するステップと;
を含み、
該第一誘電体膜と該第二誘電体膜から該最上部を除去することにより、該誘電体層の応力レベルが低下し、
該ギャップが該誘電体層で充填される、
方法。 - 該第一誘電体膜と該第二誘電体膜を堆積させるステップが:
有機シリコン前駆物質と原子酸素を堆積チャンバ内で混合する工程と;
該前駆物質を反応させて、該基板上に二酸化シリコン層を形成する工程と;
を含む、請求項1に記載の方法。 - 該原子酸素が、該堆積チャンバの外部で生成される、請求項2に記載の方法。
- 該原子酸素が:
アルゴンを含むガス混合物からプラズマを形成し;更に、
酸素前駆物質を該プラズマに導入し、ここで、該酸素前駆物質が解離して該原子酸素を形成する;
ことによって形成される、請求項2に記載の方法。 - 該酸素前駆物質が、分子酸素、オゾン、(NO2)、亜酸化窒素(N2O)、及び水からなる群より選ばれる、請求項4に記載の方法。
- 該原子酸素が:
酸素前駆物質を光解離チャンバに導入し;更に、
該酸素前駆物質を紫外光にさらし、ここで、該紫外光が該酸素前駆物質を解離して原子酸素を形成する;
ことによって形成される、請求項2に記載の方法。 - 該有機シリコン前駆物質が、ジメチルシラン、トリメチルシラン、テトラメチルシラン、ジエチルシラン、トリメトキシシラン(TriMOS)、テトラメチルオルトシリケート(TMOS)、トリエトキシシラン(TriEOS)、テトラエチルオルトシリケート(TEOS)、オクタメチルトリシロキサン(OMTS)、オクタメチルシクロテトラシロキサン(OMCTS)、テトラメチルシクロテトラシロキサン(TOMCATS)、DMDMOS、DEMS、メチルトリエトキシシラン(MTES)、フェニルジメチルシラン、又はフェニルシランを含む、請求項2に記載の方法。
- 該第一誘電体膜の該エッチングが、ウェットエッチング又はドライエッチングとして行われる、請求項1に記載の方法。
- 該誘電体膜の該エッチングが、該膜をフッ素化合物を含むエッチングガスにさらすことによって行われるドライエッチングである、請求項1に記載の方法。
- 該エッチングガスが、三フッ化窒素又は有機フッ素化合物を含む、請求項9に記載の方法。
- 該有機フッ素化合物が、CF4、C2F6、又はC3F8を含む、請求項10に記載の方法。
- 該第一誘電体膜の該エッチングが、該膜を酸性溶液にさらすことによって行われるウェットエッチングである、請求項1に記載の方法。
- 該酸性溶液が、フッ化水素酸、塩酸、リン酸、硝酸、又は硫酸を含む、請求項12に記載の方法。
- 該酸性溶液が、更に、過酸化水素を含む、請求項12に記載の方法。
- 該第一誘電体膜の該エッチングが、該膜を塩基性溶液にさらすことにより行われるウェットエッチングである、請求項1に記載の方法。
- 該塩基性溶液が、水酸化アルミニウムを含む、請求項15に記載の方法。
- 該塩基性溶液が、更に過酸化水素を含む、請求項16に記載の方法。
- 該エッチングがウェットエッチングであり、該第一膜の該堆積と前記第一膜の該ウェットエッチングが、同一プロセスチャンバ内で行われる、請求項8に記載の方法。
- 該エッチングが、該第一誘電体膜の堆積に用いられるものと異なるチャンバ内で行われるウェットエッチングである、請求項8に記載の方法。
- 該第一誘電体膜の最初の深さが、約1nm〜約100nmである、請求項1に記載の方法。
- 該方法が、該第一膜の該最上部を除去する前に該第一誘電体膜をアニールするステップを含む、請求項1に記載の方法。
- 該方法が、該第二誘電体膜を堆積させる前に該第一誘電体膜をアニールするステップを含む、請求項1に記載の方法。
- ギャップを備えた基板上に誘電体層を形成する方法であって:
該ギャップを備えた基板上に第一誘電体膜を堆積させるステップと;
該第一誘電体膜上に第一アニールを行うステップと;
該第一誘電体膜上に第一エッチングを行うことによりアニールされた第一誘電体膜の最上部を除去するステップと;
エッチングされた該第一誘電体膜の上に第二誘電体膜を堆積させるステップと;
該第二誘電体膜上に第二エッチングを行うことにより該第二誘電体膜の最上部を除去するステップと;
該第一誘電体膜と該第二誘電体膜の第二アニールを行うとともに該誘電体層を形成するステップと;
を含み、
該第一誘電体膜と該第二誘電体膜から該最上部を除去することにより、該誘電体層内の応力レベルが低下し、
該ギャップが該誘電体層で充填される、
方法。 - 該第一アニールが、該第一膜を約600℃までの温度に加熱することを含む、請求項23に記載の方法。
- 該第一アニールが、多段階アニールであって:
該第一膜を約50℃までの第一温度で第一時間加熱する段階と;
該第一膜を約50℃〜約100℃の第二温度で第二時間加熱する段階と;
該第一膜を約100℃を超え約600℃までの第三温度で第三時間加熱する段階と;
を含む、請求項23に記載の方法。 - 該第一時間が約1時間を含み、該第二時間が約30分間を含む、請求項25に記載の方法。
- 該第三時間が、約30分〜約1時間を含む、請求項25に記載の方法。
- 該第一アニールが、該第一膜にUV光を照射することを含む、請求項23に記載の方法。
- 該第一アニールが、該第一膜を不活性プラズマにさらすことを含む、請求項23に記載の方法。
- 該第一アニールが、該第一膜を電子ビームにさらすことを含む、請求項23に記載の方法。
- 該第二アニールが、該第一層と該第二層を乾燥した非反応性ガス雰囲気中で約800℃以上の温度に加熱することを含む、請求項23に記載の方法。
- 該乾燥した非反応性ガス雰囲気が、窒素(N2)を含む、請求項31に記載の方法。
- 該第一エッチングが、ウェットエッチング又はドライエッチングとして行われる、請求項23に記載の方法。
- 該第二エッチングが、ウェットエッチング又はドライエッチングとして行われる、請求項23に記載の方法。
- 該方法が、更に、
該第一膜と該第二膜の上に第三誘電体膜を堆積させるステップと;
該第三誘電体膜の最上部を除去するステップと;
を含む、請求項23に記載の方法。 - 該方法が、更に、
該第一誘電体膜と該第二誘電体膜と該第三誘電体膜をアニールして、該誘電体層を形成するステップ;
を含み、該第一誘電体膜と該第二誘電体膜と該第三誘電体膜の該最上部を除去すると、該誘電体層における該応力レベルが低下する、請求項35に記載の方法。
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US11/765,944 US8232176B2 (en) | 2006-06-22 | 2007-06-20 | Dielectric deposition and etch back processes for bottom up gapfill |
PCT/US2007/071804 WO2007149991A2 (en) | 2006-06-22 | 2007-06-21 | Dielectric deposition and etch back processes for bottom up gapfill |
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US8232176B2 (en) | 2012-07-31 |
EP2044625A4 (en) | 2014-12-31 |
KR20090033449A (ko) | 2009-04-03 |
WO2007149991A3 (en) | 2008-05-08 |
JP2009542011A (ja) | 2009-11-26 |
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US20070298585A1 (en) | 2007-12-27 |
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