JP6574312B2 - タングステン前駆体及びそれを含むタングステン含有フィルム蒸着方法 - Google Patents
タングステン前駆体及びそれを含むタングステン含有フィルム蒸着方法 Download PDFInfo
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- 229910052721 tungsten Inorganic materials 0.000 title claims description 45
- 239000010937 tungsten Substances 0.000 title claims description 45
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims description 40
- 239000002243 precursor Substances 0.000 title claims description 33
- 238000000151 deposition Methods 0.000 title description 14
- 238000005229 chemical vapour deposition Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 19
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical group C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 claims description 16
- 238000000231 atomic layer deposition Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 8
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 7
- 125000002733 (C1-C6) fluoroalkyl group Chemical group 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical group 0.000 claims description 7
- 239000010409 thin film Substances 0.000 claims description 7
- CHVJITGCYZJHLR-UHFFFAOYSA-N cyclohepta-1,3,5-triene Chemical group C1C=CC=CC=C1 CHVJITGCYZJHLR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 description 25
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 24
- 239000007787 solid Substances 0.000 description 13
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 12
- 230000008021 deposition Effects 0.000 description 9
- FZFRVZDLZISPFJ-UHFFFAOYSA-N tungsten(6+) Chemical compound [W+6] FZFRVZDLZISPFJ-UHFFFAOYSA-N 0.000 description 8
- 239000003446 ligand Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- -1 oxides Chemical class 0.000 description 6
- 150000003658 tungsten compounds Chemical class 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 3
- GVHIREZHTRULPT-UHFFFAOYSA-N 2-methyl-n-trimethylsilylpropan-2-amine Chemical compound CC(C)(C)N[Si](C)(C)C GVHIREZHTRULPT-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- LRDJLICCIZGMSB-UHFFFAOYSA-N ethenyldiazene Chemical compound C=CN=N LRDJLICCIZGMSB-UHFFFAOYSA-N 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 125000003709 fluoroalkyl group Chemical group 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- QNGLIBBVTNARBG-UHFFFAOYSA-N 1-methylcyclopenta-1,3-diene;sodium Chemical compound [Na].CC1=CC=CC1 QNGLIBBVTNARBG-UHFFFAOYSA-N 0.000 description 1
- UTOHYPVPMOEDRN-UHFFFAOYSA-N C1=CC=CC=CC1.[Na] Chemical compound C1=CC=CC=CC1.[Na] UTOHYPVPMOEDRN-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- NUUNDIOOYFEMQN-UHFFFAOYSA-N cyclopenta-1,3-diene;sodium Chemical compound [Na].C1C=CC=C1 NUUNDIOOYFEMQN-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- RAABOESOVLLHRU-UHFFFAOYSA-N diazene Chemical compound N=N RAABOESOVLLHRU-UHFFFAOYSA-N 0.000 description 1
- 229910000071 diazene Inorganic materials 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- ZBQLRRSOBIYGKD-UHFFFAOYSA-N ethenyldiazene;tungsten Chemical compound [W].C=CN=N ZBQLRRSOBIYGKD-UHFFFAOYSA-N 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004896 high resolution mass spectrometry Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- WJBNXEUDLVCWBD-UHFFFAOYSA-N n-trimethylsilylbutan-1-amine Chemical compound CCCCN[Si](C)(C)C WJBNXEUDLVCWBD-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical group [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
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- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F11/00—Compounds containing elements of Groups 6 or 16 of the Periodic Table
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- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
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Description
R1は、C1−6アルキル基、C1−6フロロアルキル又はOR”からなる群から選ばれ、
R2は、R’が置換されたシクロペンタジエン又はR’が置換されたシクロヘプタトリエンであり、
R3は、ハロゲン又はR’が置換されたシクロペンタジエンであり、
R’は、R”、OR”、NR”2、SiR”3、PR”2からなる群から選ばれ、
R”は、H、CH3、C2H5、C3H7、i−C3H7、n−C4H9、t−C4H9からなる群から選ばれる。)
R1は、C1−6アルキル基、C1−6フロロアルキル又はOR”からなる群から選ばれ、
R2は、R’が置換されたシクロペンタジエン又はR’が置換されたシクロヘプタトリエンであり、
R3は、ハロゲン又はR’が置換されたシクロペンタジエンであり、
R’は、R”、OR”、NR”2、SiR”3、PR”2からなる群から選ばれ、
R”は、H、CH3、C2H5、C3H7、i−C3H7、n−C4H9、t−C4H9からなる群から選ばれる。)
R’は、R”、OR”、NR”2、SiR”3、PR”2から選ばれ、好ましくは、H、CH3、C2H5、C3H7、i−C3H7、C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)、Si(CH3)3、Si(C2H5)3、Si(C3H7)3、Si(i−C3H7)3、Si(n−C4H9)3、Si(t−C4H9)3、P(CH3)2、P(C2H5)2、P(C3H7)2、P(i−C3H7)2、P(n−C4H9)2、P(t−C4H9)2からなる群から選ばれ、最も好ましくは、H、CH3、C2H5、C3H7、i−C3H7、C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)からなる群から選ばれる。)
R’は、R”、OR”、NR”2、SiR”3、PR”2から選ばれ、好ましくは、H、CH3、C2H5、C3H7、i−C3H7、C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)、Si(CH3)3、Si(C2H5)3、Si(C3H7)3、Si(i−C3H7)3、Si(n−C4H9)3、Si(t−C4H9)3、P(CH3)2、P(C2H5)2、P(C3H7)2、P(i−C3H7)2、P(n−C4H9)2、P(t−C4H9)2からなる群から選ばれ、最も好ましくは、H、CH3、C2H5、C3H7、i−C3H7、n−C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)からなる群から選ばれる。
R3は、ハロゲンが好ましく、より好ましくは、Cl、Br、Iである。)
R’は、R”、OR”、NR”2、SiR”3、PR”2から選ばれ、好ましくは、H、CH3、C2H5、C3H7、i−C3H7、C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)、Si(CH3)3、Si(C2H5)3、Si(C3H7)3、Si(i−C3H7)3、Si(n−C4H9)3、Si(t−C4H9)3、P(CH3)2、P(C2H5)2、P(C3H7)2、P(i−C3H7)2、P(n−C4H9)2、P(t−C4H9)2からなる群から選ばれ、最も好ましくは、H、CH3、C2H5、C3H7、i−C3H7、n−C4H9、t−C4H9、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、N(CH3)(C3H7)、N(C3H7)2、N(i−C3H7)2、N(CH3)(i−C3H7)、N(CH3)(n−C4H9)、N(n−C4H9)2、N(t−C4H9)2、N(CH3)(t−C4H9)、N(C2H5)(C3H7)、N(C2H5)(i−C3H7)、N(C2H5)(n−C4H9)、N(C2H5)(t−C4H9)、N(C3H7)(i−C3H7)、N(C3H7)(n−C4H9)、N(C3H7)(t−C4H9)、N(n−C4H9)(t−C4H9)からなる群から選ばれる。
R3は、ハロゲンが好ましく、より好ましくは、Cl、Br、Iである。)
<実施例1>:ビス−シクロペンタジエニル−ビス−(n−ブチルイミド)タングステン(VI)
窒素の雰囲気の丸底フラスコで、WCl6 10g(25.2mmole)とn−ブチルトリメチルシリルアミン16.5g(113.5mmole)とを無水THF100mLで24時間反応して、黄色固体を得た。前記黄色固体に、ピリジン10mLを添加し、2時間撹拌して、緑色固体を得た。前記タングステン化合物0.5g(0.9mmole)に、ピリジン0.5g(6.3mmole)を混合した。−50℃でタングステン化合物とピリジンとの混合溶液に、シクロペンタジエンナトリウム0.9mL(2M THF溶液、1.8mmole)を添加し、24時間反応させた後、真空下でTHFとピリジンとを蒸発し、セライトでろ過して、黄色液体0.29g(71%収率)を得た。
窒素の雰囲気の丸底フラスコで、WCl6 10g(25.2mmole)とt−ブチルトリメチルシリルアミン16.5g(113.5mmole)とを無水THF100mLで24時間反応して、黄色固体を得た。以後の反応は、前記実施例1と同じ方法で行った。(73%収率)
窒素の雰囲気の丸底フラスコで、WCl6 10g(25.2mmole)とt−ブチルトリメチルシリルアミン16.5g(113.5mmole)とを無水THF100mLで24時間反応して、黄色固体を得た。この黄色固体に、ピリジン10mLを添加し、2時間撹拌して、緑色固体を得た。前記タングステン化合物0.5g(0.9mmole)に、ピリジン0.5g(6.3mmole)を混合した。−50℃でタングステン化合物とピリジンとの混合溶液に、メチルシクロペンタジエンナトリウム0.18g(1.8mmole)を添加し、24時間反応させた後、真空下でTHFとピリジンとを蒸発し、セライトでろ過して、黄色液体0.31g(70%収率)を得た。
窒素の雰囲気の丸底フラスコで、WCl6 10g(25.2mmole)とt−ブチルトリメチルシリルアミン16.5g(113.5mmole)とを無水THF100mLで24時間反応して、黄色固体を得た。この黄色固体に、ピリジン10mLを添加し、2時間撹拌して、緑色固体を得た。前記タングステン化合物0.5g(0.9mmole)に、ピリジン0.5g(6.3mmole)を混合した。−50℃でタングステン化合物とピリジンとの混合溶液に、シクロヘプタトリエンナトリウム0.1g(0.9mmole)を添加し、24時間反応させた後、真空下でTHFとピリジンとを蒸発し、セライトでろ過して、黄色固体0.25g(60%収率)を得た。
Claims (8)
- 前記R1は、n−C4H9又はt−C4H9であり、
前記R’は、H、CH3、C2H5、OCH3、OC2H5、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、Si(CH3)3、P(CH3)2からなる群から選ばれた、請求項1に記載のタングステン前駆体化合物。 - 前記R1は、n−C4H9又はt−C4H9であり、
前記R’は、H、CH3、C2H5、OCH3、OC2H5、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、Si(CH3)3、P(CH3)2からなる群から選ばれ、
前記R3は、Clである、請求項1に記載のタングステン前駆体化合物。 - 前記R’は、H、CH3、C2H5、OH、OCH3、OC2H5、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、SiR”3、PR”2からなる群から選ばれた、請求項4に記載のタングステン前駆体化合物。
- 前記R1は、n−C4H9又はt−C4H9であり、
前記R’は、H、CH3、C2H5、OCH3、OC2H5、N(CH3)2、N(C2H5)2、N(CH3)(C2H5)、Si(CH3)3、P(CH3)2からなる群から選ばれ、
前記R3は、Clである、請求項4に記載のタングステン前駆体化合物。 - 薄膜工程が、化学気相蒸着法(CVD)又は原子層蒸着法(ALD)により行われることを特徴とする請求項7に記載の方法。
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