KR970030458A - 불균일 표면상에 사용하기에 적합한, 질화물에 대한 고선택도를 갖는 산화물 부식방법 - Google Patents
불균일 표면상에 사용하기에 적합한, 질화물에 대한 고선택도를 갖는 산화물 부식방법 Download PDFInfo
- Publication number
- KR970030458A KR970030458A KR1019960061451A KR19960061451A KR970030458A KR 970030458 A KR970030458 A KR 970030458A KR 1019960061451 A KR1019960061451 A KR 1019960061451A KR 19960061451 A KR19960061451 A KR 19960061451A KR 970030458 A KR970030458 A KR 970030458A
- Authority
- KR
- South Korea
- Prior art keywords
- fluorine
- nitride
- nitrides
- silicon
- trapping agent
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000005260 corrosion Methods 0.000 title claims abstract description 9
- 230000007797 corrosion Effects 0.000 title claims abstract description 9
- 150000004767 nitrides Chemical class 0.000 title claims abstract 11
- 239000007789 gas Substances 0.000 claims abstract 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract 8
- 229910052731 fluorine Inorganic materials 0.000 claims abstract 8
- 239000011737 fluorine Substances 0.000 claims abstract 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract 5
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract 5
- 239000001257 hydrogen Substances 0.000 claims abstract 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 7
- 229910052710 silicon Inorganic materials 0.000 claims 7
- 239000010703 silicon Substances 0.000 claims 7
- 239000007787 solid Substances 0.000 claims 5
- 239000000203 mixture Substances 0.000 claims 4
- 239000004215 Carbon black (E152) Substances 0.000 claims 3
- 229930195733 hydrocarbon Natural products 0.000 claims 3
- 150000002430 hydrocarbons Chemical class 0.000 claims 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 239000002516 radical scavenger Substances 0.000 claims 2
- 150000001720 carbohydrates Chemical class 0.000 claims 1
- -1 nitrides Chemical class 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract 2
- 238000012876 topography Methods 0.000 abstract 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
- H01J37/32853—Hygiene
- H01J37/32871—Means for trapping or directing unwanted particles
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/321—Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
-
- 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
- H01L21/30—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
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
- H01J2237/3343—Problems associated with etching
- H01J2237/3346—Selectivity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
- H01J2237/3343—Problems associated with etching
- H01J2237/3347—Problems associated with etching bottom of holes or trenches
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Plasma & Fusion (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- ing And Chemical Polishing (AREA)
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
플라즈마 부식 방법은 기판의 불균일 표면, 예를 들어 집적회로 구조 위의 단 측벽에 형성된 질화물을 포함하는, 질화물에 대한 고선택도를 갖는, 산화물의 부식에 대해 기술된다. 수소-함유 기체를 C4F8또는 C2F6부식기체에 가하는 것과, 질화물 보다 산화물 부식에 대한 플라즈마 부식 방법에서, 불소 포착제는 기판 표면의 질화물 부분의 지형에 관계없이 보존되는 질화물에 대해 고전택도를 나타낸다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 따르는 방법에 사용하기에 적합한 바람직한 부식장치를 도시한 횡단면도이다.
Claims (18)
- 질화물의 존재 하에, 불균일한 표면 위에 질화물을 포함하는 질화물에 대한 고선택도를 나타낼 수 있는, 산화물을 플라즈마 부식시키는 방법으로서, 산화물을 a) C4F8, CF4, C2F6, C3F8로부터 선택된 하나 이상의 불소-치환 탄화수소 부식 기체 및, b) 하나 이상의 수소-함유 기체를 포함하는 기체 혼합물과 접촉시키는 것을 포함하는 방법.
- 제1항에 있어서. 상기 불소-치환 탄수소 부식 기체가 C4F8을 포함하는 것을 특징으로 하는 방법.
- 제2항에 있어서, 상기 수소-함유 기체가 CH3F를 포함하는 것을 특징으로 하는 방법.
- 제3항에 있어서, 부식 챔버 압력이 2내지 10mTorr인 것을 특징으로 하는 방법.
- 제2항에 있어서, 상기 수소-함유 기체가 CH2F2를 포함하는 것을 특징으로 하는 방법.
- 제1항 내지 제5항중 어느 한 항에 있어서, 상기 기체 혼합물이 불소 포착제의 존재 하에 산화물에 접촉되는 것을 특징으로 하는 방법.
- 제6항에 있어서, 상기 불소 포착제가 규소와 탄소로부터 선택되는 것을 특징으로 하는 방법.
- 제7항에 있어서, 상기 불소 포착제가 상기 기체 혼합물의 플라즈마에 접촉하고 있고 상기 산화물 및 질화물로부터 일정 간격을 두고 있는 규소 고체를 포함하는 것을 특징으로 하는 방법.
- 제8항에 있어서, 상기 규소 고체가 접지되는 것을 특징으로 하는 방법.
- 제8항에 있어서, 상기 규소 고체가 200℃ 내지 280℃의 온도에서 유지되는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 수소-함유 기체가 C2H2를 포함하는 것을 특징으로 하는 방법.
- 제11항에 있어서, 상기 불소-치환 탄화수소 부식 기체가 CF4, C2F6, 및 C3F8, 로부터 선택되는 것을 특징으로 하는 방법.
- 제12항에 있어서, 상기 불소-치환 탄화수소 부식 기체가 C2F6를 포함하는 것을 특징으로 하는 방법.
- 제13항에 있어서, 부식 챔버 압력이 7 내지 50mTorr인 것을 특징으로 하는 방법.
- 제11항 내지 제14항중 어느 한 항에 있어서, 상기 불소 포착제가 불소포착제의 존재 하에 산화물에 접촉되는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 불소 포착제가 규소 및 탄소로부터 선택되는 것을 특징으로 하는 방법.
- 제16항에 있어서, 상기 불소 포착제가 상기 기체 혼합물의 플라즈마에 접촉하고 있고 산화물 및 질화물로부터 일정 간격을 두고 있는 규소 고체를 포함하는 것을 특징으로 하는 방법.
- 제17항에 있어서, 상기 규소 고체가 접지되는 것을 특징으로 하는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56518495A | 1995-11-28 | 1995-11-28 | |
US08/565,184 | 1995-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970030458A true KR970030458A (ko) | 1997-06-26 |
Family
ID=24257538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960061451A KR970030458A (ko) | 1995-11-28 | 1996-11-28 | 불균일 표면상에 사용하기에 적합한, 질화물에 대한 고선택도를 갖는 산화물 부식방법 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0777267A1 (ko) |
JP (1) | JPH09172005A (ko) |
KR (1) | KR970030458A (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5880037A (en) * | 1992-09-08 | 1999-03-09 | Applied Materials, Inc. | Oxide etch process using a mixture of a fluorine-substituted hydrocarbon and acetylene that provides high selectivity to nitride and is suitable for use on surfaces of uneven topography |
US6183655B1 (en) | 1997-09-19 | 2001-02-06 | Applied Materials, Inc. | Tunable process for selectively etching oxide using fluoropropylene and a hydrofluorocarbon |
US6133153A (en) * | 1998-03-30 | 2000-10-17 | Lam Research Corporation | Self-aligned contacts for semiconductor device |
US6123862A (en) | 1998-04-24 | 2000-09-26 | Micron Technology, Inc. | Method of forming high aspect ratio apertures |
US6228279B1 (en) * | 1998-09-17 | 2001-05-08 | International Business Machines Corporation | High-density plasma, organic anti-reflective coating etch system compatible with sensitive photoresist materials |
US6228774B1 (en) * | 1998-12-29 | 2001-05-08 | Lam Research Corporation | High aspect ratio sub-micron contact etch process in an inductively-coupled plasma processing system |
US7547635B2 (en) * | 2002-06-14 | 2009-06-16 | Lam Research Corporation | Process for etching dielectric films with improved resist and/or etch profile characteristics |
WO2005045915A1 (en) * | 2003-11-11 | 2005-05-19 | Showa Denko K.K. | Radical generating method, etching method and apparatus for use in these methods |
JP7110034B2 (ja) * | 2018-08-24 | 2022-08-01 | 東京エレクトロン株式会社 | エッチングする方法及びプラズマ処理装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1159012A (en) | 1980-05-02 | 1983-12-20 | Seitaro Matsuo | Plasma deposition apparatus |
US4368092A (en) | 1981-04-02 | 1983-01-11 | The Perkin-Elmer Corporation | Apparatus for the etching for semiconductor devices |
EP0103461B1 (en) | 1982-09-10 | 1988-11-17 | Nippon Telegraph And Telephone Corporation | Plasma deposition method and apparatus |
CA1247757A (en) | 1985-05-03 | 1988-12-28 | The Australian National University | Method and apparatus for producing large volume magnetoplasmas |
US4778561A (en) | 1987-10-30 | 1988-10-18 | Veeco Instruments, Inc. | Electron cyclotron resonance plasma source |
US4918031A (en) | 1988-12-28 | 1990-04-17 | American Telephone And Telegraph Company,At&T Bell Laboratories | Processes depending on plasma generation using a helical resonator |
US4948458A (en) | 1989-08-14 | 1990-08-14 | Lam Research Corporation | Method and apparatus for producing magnetically-coupled planar plasma |
US5423945A (en) | 1992-09-08 | 1995-06-13 | Applied Materials, Inc. | Selectivity for etching an oxide over a nitride |
JP2720763B2 (ja) * | 1993-09-17 | 1998-03-04 | 日本電気株式会社 | 半導体装置の製造方法 |
JPH07161702A (ja) * | 1993-10-29 | 1995-06-23 | Applied Materials Inc | 酸化物のプラズマエッチング方法 |
-
1996
- 1996-10-31 EP EP96117494A patent/EP0777267A1/en not_active Withdrawn
- 1996-11-20 JP JP8309066A patent/JPH09172005A/ja not_active Withdrawn
- 1996-11-28 KR KR1019960061451A patent/KR970030458A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0777267A1 (en) | 1997-06-04 |
JPH09172005A (ja) | 1997-06-30 |
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