JP2021521349A - 高反射率アルミニウム層のための方法および装置 - Google Patents
高反射率アルミニウム層のための方法および装置 Download PDFInfo
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- JP2021521349A JP2021521349A JP2021510275A JP2021510275A JP2021521349A JP 2021521349 A JP2021521349 A JP 2021521349A JP 2021510275 A JP2021510275 A JP 2021510275A JP 2021510275 A JP2021510275 A JP 2021510275A JP 2021521349 A JP2021521349 A JP 2021521349A
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- Prior art keywords
- layer
- cobalt
- titanium
- aluminum
- alloy layer
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 98
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 68
- 239000010941 cobalt Substances 0.000 claims abstract description 65
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 64
- 229910000531 Co alloy Inorganic materials 0.000 claims abstract description 63
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000151 deposition Methods 0.000 claims abstract description 40
- 239000010936 titanium Substances 0.000 claims abstract description 40
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 40
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 17
- 238000000137 annealing Methods 0.000 claims abstract description 11
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 11
- TUTOKIOKAWTABR-UHFFFAOYSA-N dimethylalumane Chemical compound C[AlH]C TUTOKIOKAWTABR-UHFFFAOYSA-N 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- -1 methylpyridine aluminum Chemical compound 0.000 claims description 7
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002210 silicon-based material Substances 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical compound CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 description 17
- 239000007789 gas Substances 0.000 description 7
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 description 3
- AIOWANYIHSOXQY-UHFFFAOYSA-N cobalt silicon Chemical compound [Si].[Co] AIOWANYIHSOXQY-UHFFFAOYSA-N 0.000 description 3
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 229910021324 titanium aluminide Inorganic materials 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-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
- 229910000085 borane Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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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
- C23C16/06—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
- C23C16/08—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 from metal halides
- C23C16/12—Deposition of aluminium only
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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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- 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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Abstract
Description
Claims (15)
- アルミニウム層を基板上に堆積させる方法であって、
コバルトもしくはコバルト合金の層またはチタンもしくはチタン合金の層を前記基板上に堆積させることと、
アルミニウムの層を前記コバルトもしくはコバルト合金の層または前記チタンもしくはチタン合金の層の上に堆積させることと
を含む、方法。 - 前記アルミニウムの層を堆積させる前に、前記コバルトもしくはコバルト合金の層を熱水素アニールにより前処理すること
をさらに含む、請求項1に記載の方法。 - 前記コバルトもしくはコバルト合金の層を摂氏約300度〜摂氏約400度の温度で前処理すること
をさらに含む、請求項2に記載の方法。 - 前記コバルトもしくはコバルト合金の層を約60秒〜約120秒の期間前処理すること
をさらに含む、請求項2に記載の方法。 - 前記アルミニウムの層が、約250nmと約900nmとの間の波長に対して少なくとも約80%の反射率を有する、請求項1に記載の方法。
- 前記コバルトもしくはコバルト合金の層または前記チタンもしくはチタン合金の層を約20オングストローム〜約30オングストロームの厚さに堆積させること
をさらに含む、請求項1に記載の方法。 - 前記アルミニウムの層を約300オングストローム〜約1000オングストロームの厚さに堆積させること
をさらに含む、請求項1に記載の方法。 - 前記アルミニウムの層を摂氏約60度〜摂氏約250度の温度で堆積させること
をさらに含む、請求項1に記載の方法。 - 前記アルミニウムの層をアランタイプ前駆体またはアルキルタイプ前駆体を使用して堆積させることであり、前記アランタイプ前駆体が、トリメチルアミンアランボラン(TMAAB)、メチルピリジンアルミニウム、またはジメチルエチルアミンアランを含み、前記アルキルタイプ前駆体が、ジメチルアルミニウムハイドライド(DMAH)を含む、堆積させること
をさらに含む、請求項1に記載の方法。 - 前記コバルトもしくはコバルト合金の層または前記チタンもしくはチタン合金の層を、前記基板上に堆積された窒化チタンの層の上に堆積させること
をさらに含む、請求項1に記載の方法。 - アルミニウム層を基板上に堆積させる方法であって、
コバルトもしくはコバルト合金の層またはチタンもしくはチタン合金の層を前記基板上に化学気相堆積(CVD)プロセスにより約20オングストローム〜約30オングストロームの厚さに堆積させることと、
前記コバルトもしくはコバルト合金の層の上面が損なわれている場合、前記コバルトもしくはコバルト合金の層を摂氏約400度の温度で熱水素アニールにより前処理することと、
アルミニウムの層を、前記コバルトもしくはコバルト合金の層または前記チタンもしくはチタン合金の層の上に、摂氏約120度の温度でCVDプロセスにより約300オングストローム〜約1000オングストロームの厚さに堆積させることと
を含む、方法。 - 前記コバルトもしくはコバルト合金の層を約60秒〜約120秒の期間前処理すること
をさらに含む、請求項11に記載の方法。 - 前記コバルトもしくはコバルト合金の層または前記チタンもしくはチタン合金の層を、前記基板上に堆積された窒化チタンの層の上に堆積させること
をさらに含む、請求項11に記載の方法。 - 前記アルミニウムの層が、約250nmと約900nmとの間の波長に対して少なくとも約80%の反射率を有する、請求項11に記載の方法。
- 半導体デバイスにおける様々な波長を反射させるための機器であって、
シリコンベース材料から形成された基板と、
前記基板の前記シリコンベース材料の上に堆積された窒化チタン層と、
前記窒化チタン層の上に堆積されたコバルトもしくはコバルト合金層またはチタンもしくはチタン合金層と、
前記コバルトもしくはコバルト合金層または前記チタンもしくはチタン合金層の上に堆積されたアルミニウム層であり、前記アルミニウム層が少なくとも80%の反射率を有する、アルミニウム層と
を含む、機器。
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