KR100290895B1 - 반도체 소자의 커패시터 구조 및 이의 제조 방법 - Google Patents
반도체 소자의 커패시터 구조 및 이의 제조 방법 Download PDFInfo
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- KR100290895B1 KR100290895B1 KR1019980025918A KR19980025918A KR100290895B1 KR 100290895 B1 KR100290895 B1 KR 100290895B1 KR 1019980025918 A KR1019980025918 A KR 1019980025918A KR 19980025918 A KR19980025918 A KR 19980025918A KR 100290895 B1 KR100290895 B1 KR 100290895B1
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- South Korea
- Prior art keywords
- lower electrode
- electrode layer
- layer
- film
- capacitor
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- Expired - Fee Related
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- 239000003990 capacitor Substances 0.000 title claims abstract description 56
- 239000004065 semiconductor Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 241
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000001301 oxygen Substances 0.000 claims abstract description 55
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 55
- 238000009792 diffusion process Methods 0.000 claims abstract description 49
- 239000011229 interlayer Substances 0.000 claims abstract description 25
- 230000004888 barrier function Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000010408 film Substances 0.000 claims description 73
- 238000000034 method Methods 0.000 claims description 34
- 239000010409 thin film Substances 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 11
- 229910052707 ruthenium Inorganic materials 0.000 claims description 10
- 229910019897 RuOx Inorganic materials 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 7
- 229910052741 iridium Inorganic materials 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 229910052697 platinum Inorganic materials 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000000059 patterning Methods 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 230000003449 preventive effect Effects 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910004166 TaN Inorganic materials 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- 229910008599 TiW Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/01—Manufacture or treatment
- H10D1/041—Manufacture or treatment of capacitors having no potential barriers
- H10D1/042—Manufacture or treatment of capacitors having no potential barriers using deposition processes to form electrode extensions
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/711—Electrodes having non-planar surfaces, e.g. formed by texturisation
- H10D1/712—Electrodes having non-planar surfaces, e.g. formed by texturisation being rough surfaces, e.g. using hemispherical grains
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/711—Electrodes having non-planar surfaces, e.g. formed by texturisation
- H10D1/714—Electrodes having non-planar surfaces, e.g. formed by texturisation having horizontal extensions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/692—Electrodes
- H10D1/711—Electrodes having non-planar surfaces, e.g. formed by texturisation
- H10D1/716—Electrodes having non-planar surfaces, e.g. formed by texturisation having vertical extensions
-
- 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
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/033—Making the capacitor or connections thereto the capacitor extending over the transistor
Landscapes
- Semiconductor Memories (AREA)
Abstract
Description
Claims (8)
- 셀 트랜지스터등이 형성된 반도체 기판상에 선택적으로 콘택홀을 갖고 형성되는 층간 절연층의 콘택홀내에 매립되는 플러그층과,상기 플러그층에 콘택되어 산화물이 전도체인 물질로 형성되는 제 1 하부 전극층과,상기 제 1 하부 전극층상에 그와 동일한 면적을 갖고 차례로 적층 형성되는 산소 확산 방지막 그리고 제 1 하부 전극층보다 일함수가 큰 물질로 이루어진 제 2 하부 전극층과,상기 제 1 하부 전극층,산소 확산 방지막,제 2 하부 전극층의 측면에 [제1하부전극층+산소확산방지막+제2하부전극층]보다 더높은 높이를 갖고 측벽 형태로 형성되는 제 3 하부 전극층과,내부에 산소 확산 방지막을 갖는 제 1,2,3 하부 전극층의 표면과 층간 절연층의 일부에 걸쳐 형성되는 유전막을 포함하여 구성되는 것을 특징으로 하는 반도체 소자의 커패시터의 구조.
- 제 1 항에 있어서, 제 1 하부 전극층은 Ru,Ir,Rh,Os,Sn등과 같은 산화물이 전도체인 금속 원소 또는 이러한 원소가 포함된 혼합체인 것을 특징으로 하는 반도체 소자의 커패시터의 구조.
- 제 1 항에 있어서, 제 2 하부 전극층은 Pt 박막으로 10nm(±5%)의 두께인 것을 특징으로 하는 반도체 소자의 커패시터의 구조.
- 제 1 항에 있어서, 플러그층과 제 1 하부 전극층의 반응을 방지하기 위한 확산 방지막이 플러그층과 제 1 하부 전극층 사이에 더 구비되는 것을 특징으로 하는 반도체 소자의 커패시터의 구조.
- 제 1 항에 있어서, 제 1 하부 전극층의 상부 표면 그리고 제 2 하부 전극층의 상하 표면에 각각 형성되는 제 1,2,3 점착층을 더 포함하는 것을 특징으로 하는 반도체 소자의 커패시터의 구조.
- 셀 트랜지스터등이 형성된 반도체 기판상에 층간 절연층을 형성하고 상기의 층간 절연층을 선택적으로 제거하여 콘택홀을 형성하는 공정과,상기의 콘택홀내에 매립되는 플러그층을 형성하는 공정과,상기 플러그층을 포함하는 층간 절연층의 표면에 산화물이 전도체인 금속 박막 또는 금속 산화막을 증착하여 상기의 플러그층을 통하여 반도체 기판에 형성된 전도성 영역에 콘택되는 제 1 하부 전극층을 형성하는 공정과,상기 제 1 하부 전극층의 표면상에 산소 확산 방지막,제 1 하부 전극층보다 일함수가 큰 물질의 제 2 하부 전극층,실리콘 산화막층을 차례로 형성하는 공정과,상기 실리콘 산화막,제 2 하부 전극층,산소 확산 방지막,제 1 하부 전극층을 선택적으로 식각하여 일부의 하부 전극층을 형성하는 공정과,패터닝되어진 일부의 하부 전극층을 포함하는 전면에 제 2 하부 전극층과 동일 물질을 증착하고 에치백하여 제 3 하부 전극층을 형성하는 공정과,상기 실리콘 산화막을 제거하고 유전막층을 형성하는 공정을 포함하여 이루어지는 것을 특징으로 하는 반도체 소자의 커패시터의 제조 방법.
- 제 6 항에 있어서, 제 1 하부 전극층을 Ru,Ir,Rh,Os,Sn등과 같은 산화물이 전도체인 금속 원소 또는 이러한 원소가 포함된 혼합체로 형성하는 것을 특징으로 반도체 소자의 커패시터의 제조 방법.
- 제 6 항에 있어서, 유전막의 증착전에 산소 분위기에서 열처리하여 제 3 하부 전극층과 제 1 하부 전극층사이에 RuOx 박막을 더 형성하는 공정을 포함하여 이루어지는 것을 특징으로 하는 반도체 소자의 커패시터의 제조 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980025918A KR100290895B1 (ko) | 1998-06-30 | 1998-06-30 | 반도체 소자의 커패시터 구조 및 이의 제조 방법 |
US09/191,374 US6218258B1 (en) | 1998-06-30 | 1998-11-13 | Method for fabricating semiconductor device including capacitor with improved bottom electrode |
US09/794,143 US6396097B2 (en) | 1998-06-30 | 2001-02-28 | Semiconductor device including capacitor with improved bottom electrode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980025918A KR100290895B1 (ko) | 1998-06-30 | 1998-06-30 | 반도체 소자의 커패시터 구조 및 이의 제조 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000004479A KR20000004479A (ko) | 2000-01-25 |
KR100290895B1 true KR100290895B1 (ko) | 2001-07-12 |
Family
ID=19542300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980025918A Expired - Fee Related KR100290895B1 (ko) | 1998-06-30 | 1998-06-30 | 반도체 소자의 커패시터 구조 및 이의 제조 방법 |
Country Status (2)
Country | Link |
---|---|
US (2) | US6218258B1 (ko) |
KR (1) | KR100290895B1 (ko) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6075264A (en) * | 1999-01-25 | 2000-06-13 | Samsung Electronics Co., Ltd. | Structure of a ferroelectric memory cell and method of fabricating it |
US6387748B1 (en) * | 1999-02-16 | 2002-05-14 | Micron Technology, Inc. | Semiconductor circuit constructions, capacitor constructions, and methods of forming semiconductor circuit constructions and capacitor constructions |
US6407004B1 (en) * | 1999-05-12 | 2002-06-18 | Matsushita Electric Industrial Co., Ltd. | Thin film device and method for manufacturing thin film device |
US6635528B2 (en) * | 1999-12-22 | 2003-10-21 | Texas Instruments Incorporated | Method of planarizing a conductive plug situated under a ferroelectric capacitor |
KR100587046B1 (ko) | 2000-05-31 | 2006-06-07 | 주식회사 하이닉스반도체 | 반도체 소자의 전하저장 전극 제조 방법 |
US6583460B1 (en) * | 2000-08-29 | 2003-06-24 | Micron Technology, Inc. | Method of forming a metal to polysilicon contact in oxygen environment |
US6297123B1 (en) * | 2000-11-29 | 2001-10-02 | United Microelectronics Corp. | Method of preventing neck oxidation of a storage node |
KR100410716B1 (ko) * | 2001-03-07 | 2003-12-18 | 주식회사 하이닉스반도체 | 캐패시터의 하부전극을 스토리지노드와 연결할 수 있는강유전체 메모리 소자 및 그 제조 방법 |
KR100423906B1 (ko) * | 2001-08-08 | 2004-03-22 | 삼성전자주식회사 | 강유전성 메모리 장치 및 그 제조방법 |
US7373026B2 (en) * | 2004-09-27 | 2008-05-13 | Idc, Llc | MEMS device fabricated on a pre-patterned substrate |
US7630114B2 (en) * | 2005-10-28 | 2009-12-08 | Idc, Llc | Diffusion barrier layer for MEMS devices |
US7560392B2 (en) | 2006-05-10 | 2009-07-14 | Micron Technology, Inc. | Electrical components for microelectronic devices and methods of forming the same |
US7733552B2 (en) | 2007-03-21 | 2010-06-08 | Qualcomm Mems Technologies, Inc | MEMS cavity-coating layers and methods |
US7719752B2 (en) | 2007-05-11 | 2010-05-18 | Qualcomm Mems Technologies, Inc. | MEMS structures, methods of fabricating MEMS components on separate substrates and assembly of same |
US20100288346A1 (en) * | 2009-04-29 | 2010-11-18 | Gobi Ramakrishnan Padmanabhan | Configurations and methods to manufacture solar cell device with larger capture cross section and higher optical utilization efficiency |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10173143A (ja) * | 1996-12-03 | 1998-06-26 | Lg Semicon Co Ltd | 半導体素子のキャパシタ及びその製造方法 |
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US5191510A (en) | 1992-04-29 | 1993-03-02 | Ramtron International Corporation | Use of palladium as an adhesion layer and as an electrode in ferroelectric memory devices |
US5566045A (en) | 1994-08-01 | 1996-10-15 | Texas Instruments, Inc. | High-dielectric-constant material electrodes comprising thin platinum layers |
US5555486A (en) | 1994-12-29 | 1996-09-10 | North Carolina State University | Hybrid metal/metal oxide electrodes for ferroelectric capacitors |
US5654222A (en) * | 1995-05-17 | 1997-08-05 | Micron Technology, Inc. | Method for forming a capacitor with electrically interconnected construction |
US5663088A (en) * | 1995-05-19 | 1997-09-02 | Micron Technology, Inc. | Method of forming a Ta2 O5 dielectric layer with amorphous diffusion barrier layer and method of forming a capacitor having a Ta2 O5 dielectric layer and amorphous diffusion barrier layer |
KR100189982B1 (ko) * | 1995-11-29 | 1999-06-01 | 윤종용 | 고유전체 캐패시터의 제조방법 |
US5914851A (en) * | 1995-12-22 | 1999-06-22 | International Business Machines Corporation | Isolated sidewall capacitor |
US5825609A (en) * | 1996-04-23 | 1998-10-20 | International Business Machines Corporation | Compound electrode stack capacitor |
KR100226772B1 (ko) * | 1996-09-25 | 1999-10-15 | 김영환 | 반도체 메모리 장치 및 그 제조방법 |
KR100243285B1 (ko) * | 1997-02-27 | 2000-02-01 | 윤종용 | 고유전 커패시터 및 그 제조방법 |
US6020233A (en) * | 1997-06-30 | 2000-02-01 | Hyundai Electronics Industries Co., Ltd. | Ferroelectric memory device guaranteeing electrical interconnection between lower capacitor electrode and contact plug and method for fabricating the same |
JP3319994B2 (ja) * | 1997-09-29 | 2002-09-03 | シャープ株式会社 | 半導体記憶素子 |
US5985731A (en) * | 1998-08-17 | 1999-11-16 | Motorola, Inc. | Method for forming a semiconductor device having a capacitor structure |
-
1998
- 1998-06-30 KR KR1019980025918A patent/KR100290895B1/ko not_active Expired - Fee Related
- 1998-11-13 US US09/191,374 patent/US6218258B1/en not_active Expired - Lifetime
-
2001
- 2001-02-28 US US09/794,143 patent/US6396097B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10173143A (ja) * | 1996-12-03 | 1998-06-26 | Lg Semicon Co Ltd | 半導体素子のキャパシタ及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US6396097B2 (en) | 2002-05-28 |
US20010010965A1 (en) | 2001-08-02 |
US6218258B1 (en) | 2001-04-17 |
KR20000004479A (ko) | 2000-01-25 |
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