JP2008192899A - 低誘電率膜の改質剤及び製造方法 - Google Patents
低誘電率膜の改質剤及び製造方法 Download PDFInfo
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- JP2008192899A JP2008192899A JP2007026783A JP2007026783A JP2008192899A JP 2008192899 A JP2008192899 A JP 2008192899A JP 2007026783 A JP2007026783 A JP 2007026783A JP 2007026783 A JP2007026783 A JP 2007026783A JP 2008192899 A JP2008192899 A JP 2008192899A
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- dielectric constant
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- 239000003607 modifier Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 7
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 3
- 239000004480 active ingredient Substances 0.000 claims description 8
- 239000000470 constituent Substances 0.000 abstract 1
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 18
- 238000000034 method Methods 0.000 description 11
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 11
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- KAHVZNKZQFSBFW-UHFFFAOYSA-N n-methyl-n-trimethylsilylmethanamine Chemical compound CN(C)[Si](C)(C)C KAHVZNKZQFSBFW-UHFFFAOYSA-N 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- SEDZOYHHAIAQIW-UHFFFAOYSA-N trimethylsilyl azide Chemical compound C[Si](C)(C)N=[N+]=[N-] SEDZOYHHAIAQIW-UHFFFAOYSA-N 0.000 description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- JOOMLFKONHCLCJ-UHFFFAOYSA-N N-(trimethylsilyl)diethylamine Chemical compound CCN(CC)[Si](C)(C)C JOOMLFKONHCLCJ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 2
- MEGROZMJHSAQKL-UHFFFAOYSA-N azido(triethyl)silane Chemical compound CC[Si](CC)(CC)N=[N+]=[N-] MEGROZMJHSAQKL-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- KZFNONVXCZVHRD-UHFFFAOYSA-N dimethylamino(dimethyl)silicon Chemical compound CN(C)[Si](C)C KZFNONVXCZVHRD-UHFFFAOYSA-N 0.000 description 2
- JUINSXZKUKVTMD-UHFFFAOYSA-N hydrogen azide Chemical compound N=[N+]=[N-] JUINSXZKUKVTMD-UHFFFAOYSA-N 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000006884 silylation reaction Methods 0.000 description 2
- 239000005051 trimethylchlorosilane Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- IVRMZWNICZWHMI-UHFFFAOYSA-N azide group Chemical group [N-]=[N+]=[N-] IVRMZWNICZWHMI-UHFFFAOYSA-N 0.000 description 1
- AZAHKNVYKKPXCC-UHFFFAOYSA-N azido(dimethyl)silane Chemical compound C[SiH](C)N=[N+]=[N-] AZAHKNVYKKPXCC-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 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
- 239000011261 inert gas Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/5329—Insulating materials
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- 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
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
- H01L21/02137—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC the material comprising alkyl silsesquioxane, e.g. MSQ
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- 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
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02282—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process liquid deposition, e.g. spin-coating, sol-gel techniques, spray coating
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
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- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
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- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/312—Organic layers, e.g. photoresist
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- H01L21/02107—Forming insulating materials on a substrate
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- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
【解決手段】 半導体デバイスに使用される低誘電率膜の比誘電率を低下させるための改質剤であって、一般式(1)
R3−xHxSiN3 (1)
(RはC1〜C4のアルキル基、nは0〜3の整数)で表されるケイ素化合物を有効成分として少なくとも一種類以上含有する低誘電率膜の改質剤。
【選択図】 なし
Description
R3−nHnSiN3 (1)
(RはC1〜C4のアルキル基、nは0〜3の整数)で表されるケイ素化合物を有効成分として含有することを特徴とする低誘電率膜の改質剤を提供するものである。
さらに本発明の方法によれば、比誘電率が低下した改質された低誘電率膜を製造できる。
R3−nHnSiN3 (1)
(RはC1〜C4のアルキル基、nは0〜3の整数)で表される化合物である。本発明におけるC1〜C4のアルキル基とは、具体的には、メチル基、エチル基、n−プロピル基、i−プロピル基、n−ブチル基、i−ブチル基、s−ブチル基、t−ブチル基等である。Rが複数存在する場合には、これらが互いに同一のものでも、異なったものが混在したものでも良い。しかしながら近年の低誘電率膜は、多孔質化が進行しており、改質剤を膜中の空孔内へと浸透させるためにも、これら化合物の分子径は小さい方が好ましく、Rとしては、特にメチル基が好ましい。
Si−OH+R3−xHxSi’N3 → Si−O−Si’HxR3−x+HN3(2)
(Si’は膜を構成するSiと区別するための表記で、一般式(1)のSiに相当するものである。)その結果、膜中のシラノールが減少し、膜の比誘電率が低下する。反応後はアジ化水素(HN3)が発生するため、これを系外へと排出する。アジ化水素は有害であり、しかるべき除害処理した後に廃棄する。
本発明における低誘電率膜は、膜中に空孔が存在しているものも含まれる。しかしながら、これらの膜の形成方法については、特に限定されるものではない。膜の形成方法としては、例えば、プラズマCVD法やスピンオングラス法などが挙げられる。
[比較例1]
MSQ膜の改質剤をHMDS(ヘキサメチルジシラザン)にした以外は、実施例1と同様の方法で実施した。改質後のMSQ膜の比誘電率は3.4であった。
[比較例2]
改質剤導入時の温度を450℃にした以外は、実施例1と同様の方法で実施した。改質後のMSQ膜の比誘電率は、3.8であり、比誘電率の低下は認められなかった。
Claims (2)
- 半導体デバイスに使用される低誘電率膜の比誘電率を低下させるための改質剤であって、一般式(1)
R3−nHnSiN3 (1)
(RはC1〜C4のアルキル基、nは0〜3の整数)で表されるケイ素化合物を有効成分として含有することを特徴とする低誘電率膜の改質剤。 - 半導体デバイスに使用される低誘電率膜に対し、請求項1に記載の一般式(1)で表されるケイ素化合物を含有する改質剤を20℃〜300℃の範囲内で接触させることによりなる改質された低誘電率膜の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007026783A JP5233127B2 (ja) | 2007-02-06 | 2007-02-06 | 低誘電率膜の改質剤及び製造方法 |
US12/518,003 US7973390B2 (en) | 2007-02-06 | 2007-07-11 | Modifier for low dielectric constant film, and method for production thereof |
EP07790581.8A EP2110848B1 (en) | 2007-02-06 | 2007-07-11 | Modifier for low dielectric constant film, and method for production thereof |
PCT/JP2007/063777 WO2008099522A1 (ja) | 2007-02-06 | 2007-07-11 | 低誘電率膜の改質剤及び製造方法 |
CN2007800509645A CN101606235B (zh) | 2007-02-06 | 2007-07-11 | 低介电常数膜的改性剂及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2007026783A JP5233127B2 (ja) | 2007-02-06 | 2007-02-06 | 低誘電率膜の改質剤及び製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2008192899A true JP2008192899A (ja) | 2008-08-21 |
JP5233127B2 JP5233127B2 (ja) | 2013-07-10 |
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JP2007026783A Active JP5233127B2 (ja) | 2007-02-06 | 2007-02-06 | 低誘電率膜の改質剤及び製造方法 |
Country Status (5)
Country | Link |
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US (1) | US7973390B2 (ja) |
EP (1) | EP2110848B1 (ja) |
JP (1) | JP5233127B2 (ja) |
CN (1) | CN101606235B (ja) |
WO (1) | WO2008099522A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010251596A (ja) * | 2009-04-17 | 2010-11-04 | Toshiba Corp | 半導体装置の製造方法 |
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US20150017456A1 (en) * | 2013-07-15 | 2015-01-15 | Intermolecular Inc. | Reducing voids caused by trapped acid on a dielectric surface |
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- 2007-07-11 WO PCT/JP2007/063777 patent/WO2008099522A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
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EP2110848A1 (en) | 2009-10-21 |
CN101606235B (zh) | 2011-04-27 |
CN101606235A (zh) | 2009-12-16 |
US7973390B2 (en) | 2011-07-05 |
EP2110848B1 (en) | 2014-06-25 |
US20100323530A1 (en) | 2010-12-23 |
EP2110848A4 (en) | 2013-01-23 |
WO2008099522A1 (ja) | 2008-08-21 |
JP5233127B2 (ja) | 2013-07-10 |
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