KR100955921B1 - 반도체소자의 살리사이드 형성방법 - Google Patents
반도체소자의 살리사이드 형성방법 Download PDFInfo
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- KR100955921B1 KR100955921B1 KR1020030003958A KR20030003958A KR100955921B1 KR 100955921 B1 KR100955921 B1 KR 100955921B1 KR 1020030003958 A KR1020030003958 A KR 1020030003958A KR 20030003958 A KR20030003958 A KR 20030003958A KR 100955921 B1 KR100955921 B1 KR 100955921B1
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- salicide
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- forming
- oxide film
- etching
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000004065 semiconductor Substances 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 150000004767 nitrides Chemical class 0.000 claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims abstract description 6
- 238000005530 etching Methods 0.000 claims description 30
- 229920002120 photoresistant polymer Polymers 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/665—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide
- H01L29/66507—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide providing different silicide thicknesses on the gate and on source or drain
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- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823418—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823437—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823443—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes silicided or salicided gate conductors
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
상기 하드마스크층과 도전층의 식각은 1차 및 2차 식각에 의해 진행한다.
상기 1차 식각시에, CHF3/CF4/O2/Ar 또는 C4F8/O2/Ar 등의 활성화된 플라즈마를 이용하여 식각을 진행한다.
상기 1차 식각시에, 1∼200sccm의 CHF3, 1∼200sccm의 CF4, 1∼20sccm의 O2 및 1∼1000sccm의 Ar을 사용하거나, 또는, 1∼50sccm의 C4F8, 1∼500sccm의 N2를 사용한다.
상기 2차 식각시에, Cl2/HBr/He-O2/Ar 등의 활성화된 플라즈마를 이용하여 식각을 진행한다.
상기 스페이서는 게이트전극을 포함한 전체 구조의 상면에 산화막을 형성한 다음 상기 산화막을 CHF3/CF4/O2/Ar 또는 C4F8/O2/Ar 등의 활성화된 플라즈마를 이용하여 식각하는 방식으로 형성한다.
상기 하드마스크층부분의 제거는, 다운 플로우 방식으로 수행한다.
상기 다운 플로우 방식은 식각 가스로서 O2/CF4 가스를 이용하여 수행한다.
Claims (8)
- 실리콘기판의 비살리사이드 영역과 살리사이드영역의 각각에 상대적으로 두꺼운 두께를 가진 제1게이트산화막과 제1게이트산화막보다 상대적으로 얇은 두께를 가진 제2게이트산화막을 형성하는 단계;상기 전체 구조의 상면에 도전층과 질화막계열의 하드마스크층을 형성하는 단계;상기 하드마스크층, 도전층 및 제1게이트산화막과 제2게이트산화막을 선택적으로 제거하여 비살리사이드영역과 살리사이드영역 각각에 게이트전극을 형성함과 동시에 상기 살리사이드영역의 활성영역을 드러나게 하는 단계;상기 하드마스크층부분을 제외한 전체 구조의 상면에 산화막을 형성하는 단계;상기 게이트전극측면에 스페이서를 형성함과 동시에 상기 살리사이드영역의 활성영역을 드러나게 하는 단계;상기 비살리사이드영역과 살리사이드영역의 게이트전극상면에 잔류하는 하드마스크층부분을 제거하는 단계; 및상기 비살리사이드영역과 살리사이드영역의 게이트전극상면과 살리사이드영역의 활성영역표면에 살리사이드막을 형성하는 단계;를 포함하여 구성되는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 1 항에 있어서,상기 하드마스크층과 도전층의 식각은 1차 및 2차 식각에 의해 진행하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 2 항에 있어서,상기 1차 식각시에, CHF3/CF4/O2/Ar 또는 C4F8/O2/Ar의 활성화된 플라즈마를 이용하여 식각을 진행하는 것을 특징으로 하는 반도체 소자의 살리사이드 형성방법.
- 제 3 항에 있어서,상기 1차 식각시에, 1∼200sccm의 CHF3, 1∼200sccm의 CF4, 1∼20sccm의 O2 및 1∼1000sccm의 Ar을 사용하거나, 또는, 1∼50sccm의 C4F8, 1∼500sccm의 N2를 사용하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 2 항에 있어서,상기 2차 식각시에, Cl2/HBr/He-O2/Ar의 활성화된 플라즈마를 이용하여 식각을 진행하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 1 항에 있어서,상기 스페이서는 게이트전극을 포함한 전체 구조의 상면에 산화막을 형성한 다음 상기 산화막을 CHF3/CF4/O2/Ar 또는 C4F8/O2/Ar의 활성화된 플라즈마를 이용하여 식각하는 방식으로 형성하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 1 항에 있어서,상기 하드마스크층부분의 제거는, 다운 플로우 방식으로 수행하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
- 제 7 항에 있어서,상기 다운 플로우 방식은 식각 가스로서 O2/CF4 가스를 이용하여 수행하는 것을 특징으로하는 반도체소자의 살리사이드 형성방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020030003958A KR100955921B1 (ko) | 2003-01-21 | 2003-01-21 | 반도체소자의 살리사이드 형성방법 |
TW092135665A TWI323917B (en) | 2003-01-21 | 2003-12-16 | Method for forming salicide in semiconductor device |
US10/740,136 US7262103B2 (en) | 2003-01-21 | 2003-12-18 | Method for forming a salicide in semiconductor device |
US11/782,073 US7537998B2 (en) | 2003-01-21 | 2007-07-24 | Method for forming salicide in semiconductor device |
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KR1020030003958A KR100955921B1 (ko) | 2003-01-21 | 2003-01-21 | 반도체소자의 살리사이드 형성방법 |
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KR20040067019A KR20040067019A (ko) | 2004-07-30 |
KR100955921B1 true KR100955921B1 (ko) | 2010-05-03 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR19990048485A (ko) * | 1997-12-10 | 1999-07-05 | 구본준 | 반도체장치의 제조방법 |
KR20000039157A (ko) * | 1998-12-11 | 2000-07-05 | 김영환 | 반도체소자의 제조방법 |
KR20010038087A (ko) * | 1999-10-21 | 2001-05-15 | 박종섭 | 반도체 소자의 제조방법 |
JP2002353330A (ja) | 2001-05-25 | 2002-12-06 | Denso Corp | 半導体装置及びその製造方法 |
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- 2003-01-21 KR KR1020030003958A patent/KR100955921B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR19990048485A (ko) * | 1997-12-10 | 1999-07-05 | 구본준 | 반도체장치의 제조방법 |
KR20000039157A (ko) * | 1998-12-11 | 2000-07-05 | 김영환 | 반도체소자의 제조방법 |
KR20010038087A (ko) * | 1999-10-21 | 2001-05-15 | 박종섭 | 반도체 소자의 제조방법 |
JP2002353330A (ja) | 2001-05-25 | 2002-12-06 | Denso Corp | 半導体装置及びその製造方法 |
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