JP5890386B2 - ケイ素含有フィルムの低温堆積 - Google Patents
ケイ素含有フィルムの低温堆積 Download PDFInfo
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- JP5890386B2 JP5890386B2 JP2013268396A JP2013268396A JP5890386B2 JP 5890386 B2 JP5890386 B2 JP 5890386B2 JP 2013268396 A JP2013268396 A JP 2013268396A JP 2013268396 A JP2013268396 A JP 2013268396A JP 5890386 B2 JP5890386 B2 JP 5890386B2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title description 36
- 229910052710 silicon Inorganic materials 0.000 title description 36
- 239000010703 silicon Substances 0.000 title description 36
- 230000008021 deposition Effects 0.000 title description 14
- 125000004122 cyclic group Chemical group 0.000 claims description 22
- -1 Monochlorosilane alkylsilane Chemical class 0.000 claims description 7
- 125000003342 alkenyl group Chemical group 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000000304 alkynyl group Chemical group 0.000 claims description 7
- 125000003118 aryl group Chemical group 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 238000000034 method Methods 0.000 description 80
- 239000010408 film Substances 0.000 description 53
- 239000000463 material Substances 0.000 description 39
- 239000002243 precursor Substances 0.000 description 35
- 239000000758 substrate Substances 0.000 description 30
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 28
- 238000000151 deposition Methods 0.000 description 27
- 229910052581 Si3N4 Inorganic materials 0.000 description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 25
- 239000001301 oxygen Substances 0.000 description 25
- 229910052760 oxygen Inorganic materials 0.000 description 25
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 23
- 238000000231 atomic layer deposition Methods 0.000 description 23
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 238000005229 chemical vapour deposition Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- 229910052814 silicon oxide Inorganic materials 0.000 description 15
- 229910021529 ammonia Inorganic materials 0.000 description 14
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 14
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 13
- 229910052757 nitrogen Inorganic materials 0.000 description 13
- 238000010926 purge Methods 0.000 description 12
- 238000005137 deposition process Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000011065 in-situ storage Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 description 2
- 101150065749 Churc1 gene Proteins 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 description 2
- 102100038239 Protein Churchill Human genes 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 150000002432 hydroperoxides Chemical class 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 2
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- 238000003775 Density Functional Theory Methods 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004774 atomic orbital Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005610 quantum mechanics Effects 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000012686 silicon precursor Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
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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
- 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
a.基材と窒素含有原料とを接触させて、基材上に、窒素含有原料の少なくとも一部を吸着させるステップ;
b.未吸着の窒素含有原料をパージするステップ;
c.基材とケイ素含有前駆体とを接触させて、吸着した窒素含有原料の一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ;
ここで、この方法はプラズマで促進される方法である。
a.基材と酸素含有原料とを接触させて、基材上に、酸素含有原料の少なくとも一部を吸着させるステップ;
b.未吸着の酸素含有原料をパージするステップ;
c.基材とケイ素含有前駆体とを接触させて、吸着した酸素含有原料の一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ;
b.未吸着の酸素含有原料及び窒素含有原料をパージするステップ;
c.基材とケイ素含有前駆体とを接触させて、吸着した酸素含有原料及び窒素含有原料の一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ;
この実施例において、酸化ケイ素フィルムを次のステップを用いて堆積させた。
本実施態様において、酸化ケイ素フィルムを形成する方法は、次のステップを有する。
本実施態様において、酸窒化ケイ素フィルムを形成する方法は、次のステップを含む。
本実施態様において、炭素ドープ窒化ケイ素フィルムを形成する方法は、次のステップを含む。
本実施態様において、炭素ドープ酸化ケイ素フィルムを形成する方法は、次のステップを含む。
本実施態様において、炭素ドープ酸窒化ケイ素フィルムを形成する方法は、次のステップを含む。
本発明の実施態様としては、以下の態様を挙げることができる:
《態様1》
次のステップを含む方法であって、プラズマで促進される、窒化ケイ素又は炭素ドープ窒化ケイ素をプロセスチャンバー中で基材に堆積させる方法:
a.前記基材と窒素含有原料とを接触させて、前記基材上に、前記窒素含有原料の少なくとも一部を吸着させるステップ;
b.未吸着の窒素含有原料をパージするステップ;
c.前記基材とケイ素含有前駆体とを接触させて、吸着した窒素含有原料の前記一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ。
《態様2》
前記ケイ素含有原料が、モノクロロシランである、窒化ケイ素を堆積させる態様1に記載の方法。
《態様3》
前記ケイ素含有原料が、次の一般式を有するモノクロロアルキルシランである、態様1に記載の炭素ドープ窒化ケイ素を堆積する方法:ClSiH x R 1 n R 2 m−x (ここで、x=1、2;m=1、2、3;n=0、1;n+m=<3;R 1 及びR 2 は、個々に、炭素数1〜10を有するアルキル、アルケニル、アルキニル、及びアリールからなる群より選択される直鎖、分岐鎖又は環状の基である)。
《態様4》
前記ケイ素含有原料が、ClSiEtH 2 、ClSiEt 2 H、ClSi(CH=CH 2 )H 2 、ClSi(CH=CH 2 )MeH、ClSi(CH=CH 2 )EtH、ClSi(CCH)H 2 、ClSi(iso−Pr) 2 H、ClSi(sec−Bu) 2 H、ClSi(tert−Bu) 2 H、ClSi(iso−Pr)H 2 、ClSi(sec−Bu)H 2 、ClSi(tert−Bu)H 2 及びこれらの混合物からなる群より選択される、態様3に記載の方法。
《態様5》
プラズマ原子層堆積、及びプラズマサイクリック化学気相成長からなる群より選択される方法であって、前記プラズマが、アンモニアプラズマ、窒素プラズマ、窒素プラズマ及び水素プラズマの混合物、並びに窒素プラズマ及びアルゴンプラズマの混合物からなる群より選択され、プラズマ励起ケイ素前駆体が任意である、態様1に記載の方法。
《態様6》
前記プラズマが、その場生成プラズマ、又はリモート生成プラズマである、態様5に記載の方法。
《態様7》
窒化ケイ素を堆積させるための前記窒素含有原料が、窒素、アンモニア、ヒドラジン、モノアルキルヒドロジン、ジアルキルヒドロジン及びこれらの混合物から選択され;炭素ドープ窒化ケイ素を堆積させるための前記窒素含有前駆体が、窒素、アンモニア、ヒドラジン、モノアルキルヒドロジン、ジアルキルヒドロジン、ヒドロキシルアミン(NH 2 OH)、tert−ブチルアミン(NH 2 C(CH 3 ) 3 )、アリルアミン(NH 2 CH 2 CHCH 2 )、ヒドロキシルアミン塩酸塩、メチルアミン、ジエチルアミン、トリエチルアミン及びこれらの混合物から選択される、態様1に記載の方法。
《態様8》
次のステップを含む、酸化ケイ素又は炭素ドープ酸化ケイ素を、プロセスチャンバー中で基材に堆積させる方法:
a.前記基材と酸素含有原料とを接触させて、前記基材上に、前記酸素含有原料の少なくとも一部を吸着させるステップ;
b.未吸着の酸素含有原料をパージするステップ;
c.前記基材とケイ素含有前駆体とを接触させて、吸着した酸素含有原料の前記一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ;
《態様9》
前記ケイ素含有原料が、モノクロロシランである、酸化ケイ素を堆積させる態様8に記載の方法。
《態様10》
前記ケイ素含有原料が、次の一般式を有するモノクロロアルキルシランである、炭素ドープ酸化ケイ素を堆積させる態様8に記載の方法:ClSiH x R 1 n R 2 m−x (ここで、x=1、2;m=1、2、3;n=0、1;n+m=<3;R 1 及びR 2 は、個々に、炭素数1〜10を有するアルキル、アルケニル、アルキニル、及びアリールからなる群より選択される直鎖、分岐鎖又は環状の基である)。
《態様11》
前記ケイ素含有原料が、ClSiEtH 2 、ClSiEt 2 H、ClSi(CH=CH 2 )H 2 、ClSi(CH=CH 2 )MeH、ClSi(CH=CH 2 )EtH、ClSi(CCH)H 2 、ClSi(iso−Pr) 2 H、ClSi(sec−Bu) 2 H、ClSi(tert−Bu) 2 H、ClSi(iso−Pr)H 2 、ClSi(sec−Bu)H 2 、ClSi(tert−Bu)H 2 及びこれらの混合物からなる群より選択される、態様10に記載の方法。
《態様12》
前記方法が、プラズマ原子層堆積、プラズマ化学気相成長、及びプラズマサイクリック化学気相成長からなる群より選択される、態様8に記載の方法。
《態様13》
前記プラズマが、その場生成プラズマ、又はリモート生成プラズマである、態様12に記載の方法。
《態様14》
前記酸素含有原料が、酸素、水、窒素酸化物、オゾン、及びこれらの混合物からなる群より選択される、態様8に記載の方法。
《態様15》
次のステップを含む、酸窒化ケイ素、又は炭素ドープ酸窒化ケイ素を、プロセスチャンバー中で基材に堆積させる方法:
a.前記基材と、酸素含有原料及び窒素含有原料の混合物とを接触させて、前記基材上に、前記酸素含有原料の少なくとも一部及び窒素含有原料の少なくとも一部を吸着させるステップ;
b.未吸着の酸素含有原料及び窒素含有原料をパージするステップ;
c.前記基材とケイ素含有前駆体とを接触させて、吸着した酸素含有原料及び窒素含有原料の前記一部と反応させるステップ;及び
d.未反応のケイ素含有原料をパージするステップ;
《態様16》
前記ケイ素含有原料が、モノクロロシランである、酸窒化ケイ素を堆積させる態様15に記載の方法。
《態様17》
前記ケイ素含有原料が、次の一般式を有するモノクロロアルキルシランである、炭素ドープ酸窒化ケイ素を堆積させる態様15に記載の方法:ClSiH x R 1 n R 2 m−x (ここで、x=1、2;m=1、2、3;n=0、1;n+m=<3;R 1 及びR 2 は、個々に、炭素数1〜10を有するアルキル、アルケニル、アルキニル、及びアリールからなる群より選択される直鎖、分岐鎖又は環状の基である)。
《態様18》
前記ケイ素含有原料が、ClSiEtH 2 、ClSiEt 2 H、ClSi(CH=CH 2 )H 2 、ClSi(CH=CH 2 )MeH、ClSi(CH=CH 2 )EtH、ClSi(CCH)H 2 、ClSi(iso−Pr) 2 H、ClSi(sec−Bu) 2 H、ClSi(tert−Bu) 2 H、ClSi(iso−Pr)H 2 、ClSi(sec−Bu)H 2 、ClSi(tert−Bu)H 2 及びこれらの混合物からなる群より選択される、態様17に記載の方法。
《態様19》
前記方法が、プラズマ原子層堆積、プラズマ化学気相成長及びプラズマサイクリック化学気相成長からなる群より選択される、態様15に記載の方法。
《態様20》
前記プラズマが、その場生成プラズマ、又はリモート生成プラズマである、態様19に記載の方法。
《態様21》
前記酸素含有原料が、酸素、水、窒素酸化物、オゾン、及びこれらの混合物からなる群より選択される、態様15に記載の方法。
《態様22》
前記窒素含有原料が、窒素、アンモニア、ヒドラジン、モノアルキルヒドロジン、ジアルキルヒドロジン及びこれらの混合物から選択され;炭素ドープ窒化ケイ素を堆積させるための前記窒素含有前駆体が、窒素、アンモニア、ヒドラジン、モノアルキルヒドロジン、ジアルキルヒドロジン、ヒドロキシルアミン(NH 2 OH)、tert−ブチルアミン(NH 2 C(CH 3 ) 3 )、アリルアミン(NH 2 CH 2 CHCH 2 )、ヒドロキシルアミン塩酸塩、メチルアミン、ジエチルアミン、トリエチルアミン及びこれらの混合物から選択される、態様15に記載の方法。
Claims (2)
- 次の一般式を有するモノクロロアルキルシラン:ClSiHxR1 nR2 m−x(ここで、x=1、2;m=1、2、3;n=0、1;n+m=<3;R1及びR2は、個々に、炭素数3〜10を有するアルキル、アルケニル、アルキニル、及びアリールからなる群より選択される直鎖、分岐鎖又は環状の基である;ただし、ClSi(iso−Pr) 2 H、ClSiPhH 2 及びClSiPh 2 Hを除く)。
- ClSi(CH=CH2)MeH、ClSi(CH=CH2)EtH、ClSi(CCH)H2 、ClSi(sec−Bu)2H、ClSi(tert−Bu)2H、ClSi(iso−Pr)H2、ClSi(sec−Bu)H2、及びClSi(tert−Bu)H2からなる群より選択される、モノクロロアルキルシラン。
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