JP2006060231A - 貴金属電極の製造方法及び半導体キャパシタの製造方法 - Google Patents
貴金属電極の製造方法及び半導体キャパシタの製造方法 Download PDFInfo
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- JP2006060231A JP2006060231A JP2005239535A JP2005239535A JP2006060231A JP 2006060231 A JP2006060231 A JP 2006060231A JP 2005239535 A JP2005239535 A JP 2005239535A JP 2005239535 A JP2005239535 A JP 2005239535A JP 2006060231 A JP2006060231 A JP 2006060231A
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- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 98
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 28
- 239000004065 semiconductor Substances 0.000 title claims description 26
- 239000003990 capacitor Substances 0.000 title claims description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 230000001590 oxidative effect Effects 0.000 claims abstract description 29
- 238000006479 redox reaction Methods 0.000 claims abstract description 24
- 239000002243 precursor Substances 0.000 claims abstract description 19
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 13
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 claims abstract description 8
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 claims description 4
- 101150065749 Churc1 gene Proteins 0.000 claims description 4
- 102100038239 Protein Churchill Human genes 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Natural products C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 81
- 239000010410 layer Substances 0.000 description 19
- 229910004298 SiO 2 Inorganic materials 0.000 description 11
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000010926 purge Methods 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
-
- 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
- C23C16/06—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
- C23C16/18—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 metallo-organic compounds
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table 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 Table
- 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 Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
- H01L21/28562—Selective deposition
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Electrodes Of Semiconductors (AREA)
- Semiconductor Memories (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
【解決手段】 反応チャンバ内に、シクロペンタジエニル系列の前駆体を含む貴金属ソースガス、O2またはNO2を含む酸化ガス及びNH3またはH2を含む還元ガスを同時に導入するステップと、反応チャンバ内にプラズマを発生させ、下部構造体上に貴金属層または貴金属酸化層を形成するステップと、により下部構造体上に貴金属層または貴金属酸化層を形成して貴金属電極を製造する。
【選択図】 図3A
Description
また、本発明の他の目的は、下部構造体上に下部電極を形成する場合、接着特性に優れ、かつ酸素捕集を防止できる貴金属系電極を備える半導体キャパシタの製造方法を提供することを目的とする。
前記貴金属ソースガスは、シクロペンタジエニル系列の前駆体を含むガスであることが好ましい。
前記酸化ガスは、O2またはNO2を含み、前記還元ガスは、NH3またはH2を含んでいることが好ましい。
前記貴金属ソースガスは、シクロペンタジエニル系列の前駆体を含むガスであることが好ましい。
前記酸化ガスは、O2またはNO2を含み、前記還元ガスは、NH3またはH2を含むことが好ましい。
図3Bに示すように、まず下部電極または上部電極として蒸着させようとする物質の貴金属ソースガスである貴金属前駆体を反応チャンバ31内に導入する。貴金属前駆体は、一般的にALD工程で使われるCp系の前駆体を使用することが望ましい。ここでCpは、シクロペンタジエニル(Cyclopentadienyl:C5H5)であり、置換されて貴金属にπ結合する。Ruの場合を例に挙げれば、Ru(C5H3CHCH3CH3)(HOCH2CH3)、Ru(C5H5)2、のうち少なくとも一つを使用する。ソースガスの貴金属前駆体の導入により、下部構造体10上に貴金属前駆体が蒸着する。
以下、図3Cを参照して詳細に説明する。
31 反応チャンバ
32a,32b,32c ガス供給管
33 排気管
P 真空ポンプ
Claims (12)
- 反応チャンバ内に、貴金属ソースガス、酸化ガス及び還元ガスを導入するステップと、
前記反応チャンバ内にプラズマを発生させ、下部構造体上に貴金属層または貴金属酸化層を形成するステップと、
を含むことを特徴とする酸化還元反応を利用した貴金属電極の製造方法。 - 前記貴金属ソースガス、前記酸化ガス及び前記還元ガスを前記反応チャンバ内に同時に導入することを特徴とする請求項1に記載の酸化還元反応を利用した貴金属電極の製造方法。
- 前記貴金属ソースガスは、シクロペンタジエニル系列の前駆体を含むガスであることを特徴とする請求項1に記載の酸化還元反応を利用した貴金属電極の製造方法。
- 前記貴金属ソースガスは、Ru(C5H3CHCH3CH3)(HOCH2CH3)、Ru(C5H5)2のうち少なくともいずれか一つであることを特徴とする請求項3に記載の酸化還元反応を利用した貴金属電極の製造方法。
- 前記酸化ガスは、O2またはNO2を含み、
前記還元ガスは、NH3またはH2を含む
ことを特徴とする請求項1に記載の酸化還元反応を利用した貴金属電極の製造方法。 - 前記反応チャンバ内の工程温度は、150℃から350℃の間であることを特徴とする請求項1に記載の酸化還元反応を利用した貴金属電極の製造方法。
- 反応チャンバ内に、貴金属ソースガス、酸化ガス及び還元ガスを導入するステップと、
前記反応チャンバ内にプラズマを発生させ、下部構造体上に貴金属層または貴金属酸化層を形成するステップと、
を含むことを特徴とする酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。 - 前記貴金属ソースガス、前記酸化ガス及び前記還元ガスを前記反応チャンバ内に同時に導入することを特徴とする請求項7に記載の酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。
- 前記貴金属ソースガスは、シクロペンタジエニル系列の前駆体を含むガスであることを特徴とする請求項7に記載の酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。
- 前記貴金属ソースガスは、Ru(C5H3CHCH3CH3)(HOCH2CH3)、Ru(C5H5)2のうち少なくともいずれか一つであることを特徴とする請求項9に記載の酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。
- 前記酸化ガスは、O2またはNO2を含み、
前記還元ガスは、NH3またはH2を含む
ことを特徴とする請求項7に記載の酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。 - 前記反応チャンバ内の工程温度は、150℃から350℃の間であることを特徴とする請求項7に記載の酸化還元反応を利用した貴金属電極を備える半導体キャパシタの製造方法。
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KR10-2004-0065878 | 2004-08-20 | ||
KR1020040065878A KR100738068B1 (ko) | 2004-08-20 | 2004-08-20 | 산화 환원 반응을 이용한 귀금속 전극 형성 방법 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009235461A (ja) * | 2008-03-26 | 2009-10-15 | Ulvac Japan Ltd | 薄膜形成方法、及び半導体装置の製造方法 |
WO2021187485A1 (ja) * | 2020-03-18 | 2021-09-23 | 東ソー株式会社 | 金属含有薄膜の製造方法および金属含有薄膜 |
WO2023073924A1 (ja) * | 2021-10-29 | 2023-05-04 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理方法、基板処理装置及び記録媒体 |
Families Citing this family (3)
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US10153156B2 (en) * | 2016-12-15 | 2018-12-11 | Taiwan Semiconductor Manufacturing Co., Ltd. | Plasma enhanced atomic layer deposition |
JP7531322B2 (ja) | 2020-06-12 | 2024-08-09 | 文化シヤッター株式会社 | 建材の連結装置 |
JP7531321B2 (ja) | 2020-06-12 | 2024-08-09 | 文化シヤッター株式会社 | 建材の連結具及びその連結方法 |
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JP2002217314A (ja) * | 2000-12-29 | 2002-08-02 | Hynix Semiconductor Inc | 半導体素子のキャパシタ製造方法 |
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JP2009235461A (ja) * | 2008-03-26 | 2009-10-15 | Ulvac Japan Ltd | 薄膜形成方法、及び半導体装置の製造方法 |
WO2021187485A1 (ja) * | 2020-03-18 | 2021-09-23 | 東ソー株式会社 | 金属含有薄膜の製造方法および金属含有薄膜 |
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CN1737193A (zh) | 2006-02-22 |
US20060040486A1 (en) | 2006-02-23 |
US7435678B2 (en) | 2008-10-14 |
JP5079224B2 (ja) | 2012-11-21 |
KR100738068B1 (ko) | 2007-07-12 |
KR20060017263A (ko) | 2006-02-23 |
CN1737193B (zh) | 2010-10-06 |
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