JP5294694B2 - シリコン及びチタン窒化物のインサイチュ蒸着 - Google Patents
シリコン及びチタン窒化物のインサイチュ蒸着 Download PDFInfo
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- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 title claims abstract description 100
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 68
- 239000010703 silicon Substances 0.000 title claims abstract description 68
- 230000008021 deposition Effects 0.000 title claims description 85
- 238000011065 in-situ storage Methods 0.000 title description 14
- 238000000151 deposition Methods 0.000 claims abstract description 117
- 238000000034 method Methods 0.000 claims abstract description 112
- 235000012431 wafers Nutrition 0.000 claims abstract description 58
- 239000004065 semiconductor Substances 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 144
- 239000002243 precursor Substances 0.000 claims description 107
- 230000008569 process Effects 0.000 claims description 72
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 69
- 229910052757 nitrogen Inorganic materials 0.000 claims description 34
- 238000010926 purge Methods 0.000 claims description 31
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 30
- 229910052719 titanium Inorganic materials 0.000 claims description 30
- 239000010936 titanium Substances 0.000 claims description 30
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 0.000 claims description 23
- 239000012686 silicon precursor Substances 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 238000007740 vapor deposition Methods 0.000 claims description 4
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 3
- 238000002230 thermal chemical vapour deposition Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 71
- 239000000758 substrate Substances 0.000 description 49
- 239000010409 thin film Substances 0.000 description 46
- 239000010408 film Substances 0.000 description 40
- 239000000376 reactant Substances 0.000 description 21
- 230000008901 benefit Effects 0.000 description 15
- 239000012159 carrier gas Substances 0.000 description 10
- 238000005137 deposition process Methods 0.000 description 10
- 238000000231 atomic layer deposition Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000548 poly(silane) polymer Polymers 0.000 description 5
- 229910000077 silane Inorganic materials 0.000 description 5
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012705 liquid precursor Substances 0.000 description 4
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004047 hole gas Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005046 Chlorosilane Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical group [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003090 exacerbative effect Effects 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 238000007429 general method Methods 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
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000000427 thin-film deposition Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
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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
- H01L21/02—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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic System
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic System by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
-
- C—CHEMISTRY; METALLURGY
- 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
- 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
- C23C16/45563—Gas nozzles
- C23C16/45578—Elongated nozzles, tubes with holes
-
- C—CHEMISTRY; METALLURGY
- 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
- 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
- C23C16/22—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 inorganic material, other than metallic material
- C23C16/24—Deposition of silicon only
-
- C—CHEMISTRY; METALLURGY
- 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
- 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
- C23C16/22—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 inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
-
- C—CHEMISTRY; METALLURGY
- 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
- 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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- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
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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
- H01L21/02—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
Description
本出願は、次に述べる文献の完全なる開示を参照によって組込む:米国特許第6,746,240号;米国特許第6,962,859号;米国特許出願公開第2003/0111013 A1号;米国特許出願公開第2004/0250853 A1号;米国特許出願公開第2005/0118837 A1号;米国特許出願公開第2006/0060137 A1号;米国特許出願公開第2006/0088985 A1号;およびSze,VLSI TECHNOLOGY,pp.240−41(1988)。
リアクタの反応チャンバ内へ1つ以上の前駆物質を周期的に導入、即ちパルシングすることにより、バッチ式リアクタ内の基板上に、一様であり且つ低い抵抗率のTiN薄膜が経済的に蒸着され得ることが、最近見いだされた。例えば、Hasperらの米国特許出願公開第2006/0060137 A1号は、安定なチタン前駆物質及び窒素前駆物質、即ち、ラジカルまたはプラズマでない前駆物質を使用して、TiN薄膜を形成することを開示している。Hasperらは、2つの一般的な方法を開示している。即ち:(1)反応チャンバ内へ、チタン前駆物質(例えば四塩化チタンTiCl4)および窒素前駆物質(例えばアンモニアNH3)を交互にパルス的に導入すること;および、(2)反応チャンバ内へ一方の前駆物質(例えばTiCl4)をパルス的に導入する間に、他方の前駆物質(例えばNH3)を連続的にフローすること。Hasperらは、これらの方法が、200mm若しくは300mmウェハ等の業界サイズのウェハ上に、良好な一様性及び低い抵抗率を有するTiN薄膜の蒸着を可能にすることを見いだした。更に、Hasperらは、そのような方法が、低温(例えば450〜600℃の間)でのTiN蒸着を可能にし、それにより、そのような蒸着が、アルミニウム又は銅の多層金属配線化等の他のプロセスと両立可能であることを見いだした。
上記したように、バッチ式リアクタ内において、例えば半導体ウェハ等の複数の基板上に、TiN及びシリコン薄膜のインサイチュ蒸着が行われる。いくつかの例示的なバッチ式リアクタを次に記述する。
リアクタの反応チャンバ内へ1つ以上の前駆物質を周期的に導入あるいはパルス的に導入することにより、バッチ式リアクタ内のウェハ上に、一様であり且つ低い抵抗率のTiN薄膜が蒸着され得ることが見いだされた。好ましくは、TiN薄膜は、安定なチタン前駆物質及び窒素前駆物質、即ち、ラジカルまたはプラズマでない前駆物質を使用して形成される。より好ましくは、チタン前駆物資及び窒素前駆物質として、四塩化チタン(TiCl4)及びアンモニア(NH3)がそれぞれ使用される。
上記において議論されたように、TiN膜を蒸着する前あるいは後の双方で、バッチ式リアクタ内のウェハ上にシリコン膜を蒸着することができる。シリコン膜はアモルファスシリコンを含むことができ、好ましくは、低温で、あるいは、TiN膜が蒸着される温度と同じ若しくは比較的近い温度で、CVDによって蒸着され得る。蒸着されるシリコン及びTiN膜は、互いに直接的に接触(例えば、直接的に隣接する)して蒸着されることができる。保護キャッピング薄膜となるように、TiN膜を覆ってシリコン膜を蒸着することができる。あるいは、シリコン膜を覆ってTiN膜を蒸着することができる。
Claims (14)
- 半導体ウェハのバッチをプロセスチャンバに挿入するステップと、
前記プロセスチャンバ内の前記半導体ウェハ上に、チタン窒化物(TiN)を蒸着するステップと、
チタン窒化物を蒸着するための温度から20℃以内の差で異なるシリコン蒸着温度でトリシランをシリコン前駆物質として用いた熱化学気相蒸着法を行うことによって、前記プロセスチャンバ内の前記半導体ウェハ上にシリコンを蒸着するステップとを含み、
チタン窒化物の蒸着とシリコンの蒸着とを、その間に前記プロセスチャンバから前記半導体ウェハを取り出すことなしに行う、半導体ウェハの処理方法。 - 前記シリコンを蒸着するステップが、前記TiNを蒸着するステップの後に生じる請求項1の方法。
- 前記TiNを蒸着するステップが、前記シリコンを蒸着するステップの後に生じる請求項1の方法。
- 前記TiNを蒸着するステップおよび前記シリコンを蒸着するステップが、両方とも400〜550℃以内の温度で行われる請求項1の方法。
- 前記TiNを蒸着するステップおよび前記シリコンを蒸着するステップが、両方とも450〜500℃以内の温度で行われる請求項4の方法。
- 前記半導体ウェハのバッチを挿入するステップが、互いに間隔を空けて配置された平行な半導体ウェハの配置を提供することを含み、
TiNおよびシリコンの蒸着が、それぞれが前記プロセスチャンバの内部に位置し、且つ、前記半導体ウェハに対して垂直に向けられたガスインジェクタチューブを通じて、前駆物質ガスをフローすることを含み、
それぞれのインジェクタチューブが、半導体ウェハの前記配置の長さの大部分に沿って伸び、それぞれのチューブが、その長さ方向に沿って複数のガスインジェクタホールを有する請求項1の方法。 - 前記ウェハのバッチを挿入するステップが、互いに垂直に間隔を空けて配置された水平なウェハの配置を提供することを含み、
それぞれのインジェクタチューブが、垂直に配置されて、ウェハの前記配置の高さの大部分に沿って伸びる請求項6の方法。 - TiNを蒸着する前記ステップが、
1番目の前記インジェクタチューブを通じて、チタン前駆物質ガスの複数の個別のパルスをフローするステップと、
2番目の前記インジェクタチューブを通じて、窒素前駆物質ガスの複数の個別のパルスをフローするステップとを含み、
当該窒素前駆物質ガスパルスのそれぞれが、複数の前記チタン前駆物質ガスパルスの2つの連続するパルスの間に、一時的に生じる請求項6の方法。 - TiNを蒸着する前記ステップが、複数の個別の時間間隔のそれぞれの間に、
(1)前記プロセスチャンバ内へパージガスをフローすること、および
(2)前記プロセスチャンバを排気させること、のうちの1つをさらに含み、
前記時間間隔のそれぞれが、前記前駆物質ガスの一方のパルスの後、且つ、直ちに後続する前記前駆物質ガスの他方のパルスの前に在る請求項8の方法。 - TiNを蒸着する前記ステップが、最後の前記チタン前駆物質ガスパルスの後に、前記第2のインジェクタチューブを通じて、前記窒素前駆物質ガスの付加的なパルスをフローすることをさらに含み、
当該付加的な窒素前駆物質ガスパルスの後に、別のチタン前駆物質ガスパルスが続かない請求項8の方法。 - TiNを蒸着する前記ステップが、
1番目の前記インジェクタチューブを通じて、窒素前駆物質ガスをフローするステップと、
前記窒素前駆物質ガスをフローしながら、2番目の前記インジェクタチューブを通じて、チタン前駆物質ガスの複数の個別のパルスをフローするステップとを含む請求項6の方法。 - TiNを蒸着する前記ステップが、
第1の時間間隔中に、1番目の前記インジェクタチューブを通じて、窒素前駆物質ガスのパルスをフローするサブステップと、
前記第1の時間間隔中に、2番目の前記インジェクタチューブを通じて、チタン前駆物質ガスのパルスをフローするサブステップと、
前記第1の時間間隔の後の、第2の時間間隔中に、前記第1のインジェクタチューブを通じて、前記窒素前駆物質ガスのパルスをフローするサブステップとを含む1つのサイクルに従って、前記窒素前駆物質ガスおよび前記チタン前駆物質ガスをフローし、
前記第2の時間間隔中に、前記チタン前駆物質ガスが前記プロセスチャンバへ供給されない請求項6の方法。 - 前記サイクルが、
前記第1の時間間隔及び前記第2の時間間隔の間に、(1)パージガスで前記プロセ
スチャンバをパージすること、および(2)前記プロセスチャンバを排気させること、のうちの1つを一時的に行うサブステップと、
前記第2の時間間隔の後に、(1)パージガスで前記プロセスチャンバをパージする
こと、および(2)前記プロセスチャンバを排気させること、のうちの1つを一時的に行うサブステップとをさらに含む請求項12の方法。 - 前記チタン前駆物質ガスが四塩化チタン(TiCl4)を含み、前記窒素前駆物質ガスがアンモニア(NH3)を含む請求項12の方法。
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