JP2022507300A - ルテニウム前駆体を使用したpealdプロセス - Google Patents
ルテニウム前駆体を使用したpealdプロセス Download PDFInfo
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- JP2022507300A JP2022507300A JP2021525796A JP2021525796A JP2022507300A JP 2022507300 A JP2022507300 A JP 2022507300A JP 2021525796 A JP2021525796 A JP 2021525796A JP 2021525796 A JP2021525796 A JP 2021525796A JP 2022507300 A JP2022507300 A JP 2022507300A
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- JP
- Japan
- Prior art keywords
- cyclohexadiene
- ruthenium
- diene
- cymene
- plasma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229910052707 ruthenium Inorganic materials 0.000 title claims abstract description 130
- 239000002243 precursor Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 80
- 230000008569 process Effects 0.000 title claims abstract description 27
- 238000000151 deposition Methods 0.000 claims abstract description 113
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003446 ligand Substances 0.000 claims abstract description 23
- 238000000231 atomic layer deposition Methods 0.000 claims abstract description 18
- 125000003118 aryl group Chemical group 0.000 claims abstract description 11
- 125000002897 diene group Chemical group 0.000 claims abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 72
- 239000007789 gas Substances 0.000 claims description 62
- -1 (cymene) (1,3-cyclohexadien) Chemical compound 0.000 claims description 47
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 claims description 40
- 239000011261 inert gas Substances 0.000 claims description 29
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 239000001257 hydrogen Substances 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
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- 229930007927 cymene Natural products 0.000 claims description 7
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- 239000001307 helium Substances 0.000 claims description 5
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- DFPXOWNBDRVOMV-UHFFFAOYSA-N cyclohexa-1,3-diene 1-ethyl-4-methylbenzene Chemical compound CCC1=CC=C(C=C1)C.C1CC=CC=C1 DFPXOWNBDRVOMV-UHFFFAOYSA-N 0.000 claims description 2
- NNBULQRFHRUJLI-UHFFFAOYSA-N cyclohexa-1,3-diene toluene Chemical compound C1=CC=CCC1.CC1=CC=CC=C1 NNBULQRFHRUJLI-UHFFFAOYSA-N 0.000 claims description 2
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- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000004792 oxidative damage Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000004151 rapid thermal annealing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- BIXNGBXQRRXPLM-UHFFFAOYSA-K ruthenium(3+);trichloride;hydrate Chemical compound O.Cl[Ru](Cl)Cl BIXNGBXQRRXPLM-UHFFFAOYSA-K 0.000 description 1
- PWRYKCFNWWHKLP-UHFFFAOYSA-N ruthenium;hydrate Chemical compound O.[Ru] PWRYKCFNWWHKLP-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000005671 trienes Chemical class 0.000 description 1
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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
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- 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
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Abstract
Description
の化合物を含み、式中、1つ以上のR1-R6は、HおよびC1-C6アルキルから選択され、R7は、0(共有結合)または1~4個の炭素原子の二価アルケン基であり、R8およびR9は、1つ以上の環構造を形成するか、またはHおよびC1-C6アルキルから選択される。好ましくは、R3-R8の1つ、2つまたは3つは、C1-C6アルキル、またはより好ましくはC1-C3アルキルから選択され、残りのR1-R6はHである。好ましくは、R7は0(共有結合)であり、R8およびR9は1つ以上の環構造を形成する。
本明細書に記載の還元プラズマを使用するPEALDプロセスにおいてルテニウム含有前駆体を使用してルテニウムを堆積させるための使用に適合した、
利用可能なPEALD装置および一般に理解されている技術を用いて実行することができる。本明細書の方法に有用なシステムの1つの例として、図11は、記載されたPEALDプロセスを実行するのに有用であり得るシステムを概略的に示す。基板16を支持するプラテン14を含む内部12を有する堆積チャンバ10を含む、PEALDシステム2が示されている。図示される内部12は、単一の基板16を収容するサイズであるが、PEALD処理のために複数の基板を収容する任意のサイズであってもよい。堆積チャンバはまた、RF電源52に接続されたアノード52、カソード54を含むプラズマ生成システムを含む。それは、200Wを超える電力(例えば、約250~約500Wの範囲の電力)を生成して、還元ガスがチャンバ10に導入されると還元プラズマを生成することができる。
具体例としては、炭化水素化合物(アルカン、アルコール、ケトン
などを含む)、例えば、オクタン、ノナン、デカン、およびテトラヒドロフランなどのエーテルが挙げられる。
400Wプラズマ出力で26% NH3パルスを用いたP-シメン(1,3-シクロヘキサジエン)RuのPEALD堆積(5-5-10-5)。
Eom,T.-K.,et al.(Electrochemical and Solid State Letters,12:D85-D88,2009)に記載されているように、P-シメン(1,3-シクロヘキサジエン)Ru(P-シメンCHD Ru)を使用した。
400Wプラズマ出力で26% NH3パルスを用いたP-シメン(1,3-シクロヘキサジエン)RuのPEALD堆積(8-5-10-5)。
PEALD堆積を実施例1に従って行ったが、5秒パルスの代わりに8秒パルスを使用した。
400W プラズマ出力を使用した、250℃でのH2プラズマパルスによるP-シメン(1,3-シクロヘキサジエン)RuのPEALD堆積(5-5-10-5)。
実施例1に従ってPEALD堆積を行ったが、還元プラズマとして26% H2を使用した。
400Wおよび280℃でのH2プラズマパルスを用いたP-シメン(1,3-シクロヘキサジエン)RuのPEALD堆積。
PEALD堆積を実施例3に従って行ったが、250℃の代わりに280℃で行った。
200WでのNH3プラズマパルスを用いたP-シメン(1,3-シクロヘキサジエン)RuのPEALD堆積(5-5-10-5)。
PEALD堆積を実施例1に従って行ったが、還元プラズマ出力として200Wを使用した。
Claims (20)
- ルテニウムを堆積させる方法であって、
(a)式I:RARBRu(0)のルテニウム前駆体であって、式中、RAはアリール基含有配位子であり、RBはジエン基含有配位子であるルテニウム前駆体を基板表面に提供することと、
(b)200Wを超える電力を使用して基板表面に還元プラズマを提供することと
を含み、
ルテニウムが、プラズマ増強原子層堆積(PEALD)プロセスで基板上に堆積される方法。 - R1-R6の1つ、2つまたは3つがC1-C3アルキルから選択され、残りのR1-R6がHである、請求項2に記載の方法。
- R7が0(共有結合)であり、R8およびR9が1つ以上の環構造を形成する、請求項2に記載の方法。
- RAおよびRBが、いかなるヘテロ原子も含まない、請求項1に記載の方法。
- ルテニウム前駆体が、12~20、14~18、または15~17の範囲の総炭素原子量を有する、請求項1に記載の方法。
- ルテニウム前駆体が、16~28の範囲、19~25の範囲、または20から24の範囲の総水素原子量を有する、請求項1に記載の方法。
- RAが、2つの異なるアルキル基を有するジアルキルベンゼンである、請求項1に記載の方法。
- RAが、トルエン、キシレン、エチルベンゼン、クメンおよびシメンからなる群から選択される、請求項1に記載の方法。
- RBが環状ジエンである、請求項1に記載の方法。
- RBがコンジュゲートジエンである、請求項1に記載の方法。
- RBが、1,3-もしくは1,4-シクロヘキサジエンまたはアルキルシクロヘキサジエンである、請求項1に記載の方法。
- ルテニウム前駆体が、(シメン)(1,3-シクロヘキサジエン)Ru(0)、(シメン)(1,4-シクロヘキサジエン)Ru(0)、(シメン)(1-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(2-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(3-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(4-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(5-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(6-メチルシクロヘキサ-1,3-ジエン)Ru(0)、(シメン)(1-メチルシクロヘキサ-1,4-ジエン)Ru(0)、(シメン)(2-メチルシクロヘキサ-1,4-ジエン)Ru(0)、(シメン)(3-メチルシクロヘキサ-1,4-ジエン)Ru(0)、(シメン)(4-メチルシクロヘキサ-1,4-ジエン)Ru(0)、(シメン)(5-メチルシクロヘキサ-1,4-ジエン)Ru(0)、および(シメン)(6-メチルシクロヘキサ-1,4-ジエン)Ru(0)からなる群から選択される、請求項1に記載の方法。
- ルテニウム前駆体が、(ベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(トルエン)(1,3-シクロヘキサジエン)Ru(0)、(エチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(1,2-キシレン)(1,3-シクロヘキサジエン)Ru(0)、(1,3-キシレン)(1,3-シクロヘキサジエン)Ru(0)、(1,4-キシレン)(1,3-シクロヘキサジエン)Ru(0)、(p-シメン)(1,3-シクロヘキサジエン)Ru(0)、(o-シメン)(1,3-シクロヘキサジエン)Ru(0)、(m-シメン)(1,3-シクロヘキサジエン)Ru(0)、(クメン)(1,3-シクロヘキサジエン)Ru(0)、(n-プロピルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(m-エチルトルエン)(1,3-シクロヘキサジエン)Ru(0)、(p-エチルトルエン)(1,3-シクロヘキサジエン)Ru(0)、(o-エチルトルエン)(1,3-シクロヘキサジエン)Ru(0)、(1,3,5-トリメチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(1,2,3-トリメチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(tert-ブチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(イソブチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(sec-ブチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(インダン)(1,3-シクロヘキサジエン)Ru(0)、(1,2-ジエチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(1,3-ジエチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(1,4-ジエチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、(1-メチル-4-プロピルベンゼン)(1,3-シクロヘキサジエン)Ru(0)、および(1,4-ジメチル-2-エチルベンゼン)(1,3-シクロヘキサジエン)Ru(0)からなる群から選択される、請求項1に記載の方法。
- 工程(a)において、ルテニウム前駆体が、ヘリウム、アルゴン、クリプトン、ネオンおよびキセノンから選択される不活性ガスを含むガス流フローで供給される、請求項1に記載の方法。
- 工程(a)において、ルテニウム前駆体が、250~425sccmの範囲、300~375sccmの範囲、または320~350sccmの範囲の流量でガス流フローで供給される、請求項1に記載の方法。
- 工程(a)において、ルテニウム前駆体が、125℃以下、または80~120℃の範囲の温度で提供される、請求項1に記載の方法。
- 工程(a)において、ルテニウム前駆体が、1~5Torrの範囲、2~4Torrの範囲、または2.5~3.5Torrの範囲のプロセス圧力で供給される、請求項1に記載の方法。
- 還元プラズマが、水素H2(水素)、NH3(アンモニア)、またはそれらの混合物を含む、請求項1に記載の方法。
- プラズマ増強原子層堆積(PEALD)システムであって、
式RARBRu(0)のルテニウム前駆体であって、
式中、RAがアリール基含有配位子であり、RBがジエン基含有配位子であるルテニウム前駆体を含むルテニウム源と、
還元プラズマを供給することができるプラズマ供給源と、
200Wを超える電力をプラズマに供給することができる電源と
を含む、システム。
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JP2008124464A (ja) * | 2006-11-08 | 2008-05-29 | Asm Japan Kk | Ru膜および金属配線構造の形成方法 |
JP2009046440A (ja) * | 2007-08-22 | 2009-03-05 | Tosoh Corp | ルテニウム化合物、その製造方法、ルテニウム含有薄膜及びその製造方法 |
KR20090082543A (ko) * | 2008-01-28 | 2009-07-31 | (주)디엔에프 | 신규 루테늄 화합물 및 이를 이용한 박막 증착 방법 |
JP2020522618A (ja) * | 2017-06-06 | 2020-07-30 | ラム リサーチ コーポレーションLam Research Corporation | 相互接続メタライゼーションにおけるルテニウム層の堆積 |
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