KR100483564B1 - 전계 효과 트랜지스터 및 그의 제조 방법 - Google Patents
전계 효과 트랜지스터 및 그의 제조 방법 Download PDFInfo
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- KR100483564B1 KR100483564B1 KR10-2002-0026415A KR20020026415A KR100483564B1 KR 100483564 B1 KR100483564 B1 KR 100483564B1 KR 20020026415 A KR20020026415 A KR 20020026415A KR 100483564 B1 KR100483564 B1 KR 100483564B1
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- Prior art keywords
- silicon layer
- gate
- film
- nitride film
- insulating film
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- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 44
- 239000010703 silicon Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 230000005669 field effect Effects 0.000 claims abstract description 16
- 150000004767 nitrides Chemical class 0.000 claims description 26
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 16
- 229910021332 silicide Inorganic materials 0.000 claims description 12
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 239000002019 doping agent Substances 0.000 claims description 3
- 238000005468 ion implantation Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005389 semiconductor device fabrication Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
- H10D30/0321—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] comprising silicon, e.g. amorphous silicon or polysilicon
- H10D30/0323—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] comprising silicon, e.g. amorphous silicon or polysilicon comprising monocrystalline silicon
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/671—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor having lateral variation in doping or structure
-
- 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
- H01L21/02104—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
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/02255—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by thermal treatment
-
- 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
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
Landscapes
- Thin Film Transistor (AREA)
Abstract
Description
Claims (11)
- 삭제
- 삭제
- 제 1 실리콘층(1), 실리콘 산화막(2) 및 제 2 실리콘층(3)으로 이루어진 SOI기판(10)의 상부에 산화막(11)과 질화막(12)을 순차적으로 증착하는 제 1 단계와; 상기 질화막(12)과 산화막(11)을 순차적으로 제거하여 제 2 실리콘층(3)의 일부를 노출시키고, 게이트가 형성될 영역(13)을 형성하는 제 2 단계와;상기 질화막(12)을 마스크로 하여 상기 게이트가 형성될 영역(13)에 노출된 제 2 실리콘층(3)을 부분적으로 식각하여 일정 두께만큼 제거하는 제 3 단계와;상기 게이트가 형성될 영역(13)의 내부에 절연막으로 이루어진 상호 이격된 한 쌍의 제 1 측벽(14a,14b)을 노출된 제 2 실리콘층(3)의 양측면에서 상기 질화막(12)의 일부면까지 감싸도록 형성하여 노출된 실리콘층을 축소시키는 는 제 4 단계와;상기 제 1 측벽(14a,14b)과 축소된 크기의 제 2 실리콘 노출부(3')의 일부를 감싸는 게이트 절연막(15)을 형성하는 제 5 단계와;상기 질화막(12)과 게이트 절연막(15)의 상부에 다결정 실리콘층(16)을 형성하고, 상기 질화막(12) 상부면이 노출되도록 상기 다결정 실리콘층(16)을 제거하고 평탄화시키는 제 6 단계와;상기 질화막(12)과 산화막(11)을 식각공정으로 제거하고, 이온 주입을 통해 도펀트를 도핑시켜, 제 2 실리콘층(3)에 소스와 드레인 영역(3a,3b)을 형성하고, 다결정 실리콘층(16')을 게이트(16")로 형성하는 제 7 단계와;상기 소스와 드레인영역(3a,3b)과 게이트(16")의 상부에 각각 실리사이드층(18,19,20)을 형성하는 제 8 단계로 구성된 전계 효과 트랜지스터의 제조방법.
- 제 3 항에 있어서,제 7 단계와 제 8 단계 사이에,상기 소스와 드레인 영역(3a,3b)의 상부에 절연막을 증착하고, 상기 절연막을 에치백(Etch-back)하여 상기 한 쌍의 제 1 측벽(14a,14b)과 게이트(16")의 외측에 각각 한 쌍의 제 2 측벽(17a,17b)을 형성하는 단계를 더 구비한 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 SOI기판(10)은 두께가 30 ~ 80㎚인 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 2 단계의 게이트가 형성될 영역(13)의 폭(L1)은 0.04 ~ 1.0㎛인 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 4 단계의 제 1 측벽(14a,14b)을 화학기상증착(CVD, Chemical Vapor Deposition)공정을 수행하여 절연막을 증착하고, 이 증착된 절연막의 중앙부분을 에치백(Etch-back)공정으로 제 2 실리콘층(3)의 상부가 노출되도록 제거함으로써 형성하는 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 5 단계의 게이트 절연막(15)을 열산화 공정을 통하여 형성하는 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 6 단계의 상기 다결정 실리콘층(16)의 제거 및 평탄화 공정은 CMP(Chemical Mechanical Polishing) 또는 에치백(Etch-back)공정으로 수행하는 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 6 단계의 상기 다결정 실리콘층(16)을 제거하고 평탄화시키는 공정에 의해, 상기 다결정 실리콘층(16)을 'T'자 모양의 게이트 구조로 형성하는 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 제 5 단계의 상기 질화막(12)과 산화막(11)의 식각공정은,160℃ 온도로 H3PO4용액을 이용하여 질화막(12)을 제거하고, 상온에서 완충(Buffered) HF용액으로 산화막(11)을 제거하는 것을 특징으로 하는 전계 효과 트랜지스터의 제조방법.
Priority Applications (1)
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KR10-2002-0026415A KR100483564B1 (ko) | 2002-05-14 | 2002-05-14 | 전계 효과 트랜지스터 및 그의 제조 방법 |
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KR10-2002-0026415A KR100483564B1 (ko) | 2002-05-14 | 2002-05-14 | 전계 효과 트랜지스터 및 그의 제조 방법 |
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Publication Number | Publication Date |
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KR20030088309A KR20030088309A (ko) | 2003-11-19 |
KR100483564B1 true KR100483564B1 (ko) | 2005-04-15 |
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KR10-2002-0026415A Expired - Fee Related KR100483564B1 (ko) | 2002-05-14 | 2002-05-14 | 전계 효과 트랜지스터 및 그의 제조 방법 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0738095A (ja) * | 1993-07-23 | 1995-02-07 | Hitachi Ltd | 半導体装置及びその製造方法 |
KR19980060636A (ko) * | 1996-12-31 | 1998-10-07 | 김영환 | 반도체소자의 제조방법 |
KR20000016924A (ko) * | 1998-08-11 | 2000-03-25 | 포만 제프리 엘 | 활성에프이티몸체소자및그제조방법 |
US6060749A (en) * | 1998-04-23 | 2000-05-09 | Texas Instruments - Acer Incorporated | Ultra-short channel elevated S/D MOSFETS formed on an ultra-thin SOI substrate |
US6452229B1 (en) * | 2002-02-21 | 2002-09-17 | Advanced Micro Devices, Inc. | Ultra-thin fully depleted SOI device with T-shaped gate and method of fabrication |
-
2002
- 2002-05-14 KR KR10-2002-0026415A patent/KR100483564B1/ko not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0738095A (ja) * | 1993-07-23 | 1995-02-07 | Hitachi Ltd | 半導体装置及びその製造方法 |
KR19980060636A (ko) * | 1996-12-31 | 1998-10-07 | 김영환 | 반도체소자의 제조방법 |
US6060749A (en) * | 1998-04-23 | 2000-05-09 | Texas Instruments - Acer Incorporated | Ultra-short channel elevated S/D MOSFETS formed on an ultra-thin SOI substrate |
KR20000016924A (ko) * | 1998-08-11 | 2000-03-25 | 포만 제프리 엘 | 활성에프이티몸체소자및그제조방법 |
US6452229B1 (en) * | 2002-02-21 | 2002-09-17 | Advanced Micro Devices, Inc. | Ultra-thin fully depleted SOI device with T-shaped gate and method of fabrication |
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KR20030088309A (ko) | 2003-11-19 |
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