KR100846364B1 - 수소확산방지막을 구비한 내장형 강유전체 메모리 소자의제조방법 - Google Patents
수소확산방지막을 구비한 내장형 강유전체 메모리 소자의제조방법 Download PDFInfo
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- KR100846364B1 KR100846364B1 KR1020020023019A KR20020023019A KR100846364B1 KR 100846364 B1 KR100846364 B1 KR 100846364B1 KR 1020020023019 A KR1020020023019 A KR 1020020023019A KR 20020023019 A KR20020023019 A KR 20020023019A KR 100846364 B1 KR100846364 B1 KR 100846364B1
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- Prior art keywords
- ferroelectric
- hydrogen diffusion
- film
- memory device
- forming
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 47
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 47
- 238000009792 diffusion process Methods 0.000 title claims abstract description 42
- 230000004888 barrier function Effects 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title claims 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000002265 prevention Effects 0.000 claims abstract description 18
- 239000004065 semiconductor Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 37
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 13
- 238000000059 patterning Methods 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 abstract description 28
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000000137 annealing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 60
- 239000011229 interlayer Substances 0.000 description 37
- 229910052751 metal Inorganic materials 0.000 description 28
- 239000002184 metal Substances 0.000 description 28
- 239000010410 layer Substances 0.000 description 14
- 239000003990 capacitor Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 7
- 239000010937 tungsten Substances 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 229910052741 iridium Inorganic materials 0.000 description 5
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 229910052746 lanthanum Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229910052707 ruthenium Inorganic materials 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 2
- 229910000457 iridium oxide Inorganic materials 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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
- H10D1/682—Capacitors having no potential barriers having dielectrics comprising perovskite structures
- H10D1/688—Capacitors having no potential barriers having dielectrics comprising perovskite structures comprising barrier layers to prevent diffusion of hydrogen or oxygen
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
- H10B53/30—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors characterised by the memory core region
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
- H10B53/40—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors characterised by the peripheral circuit region
Landscapes
- Semiconductor Memories (AREA)
Abstract
Description
Claims (3)
- 셀 영역과 주변회로 영역이 정의된 반도체 기판의 상기 셀 영역 상부에 하부전극을 형성하는 단계;상기 하부전극을 포함한 상기 반도체 기판의 전면에 강유전체막을 형성하는 단계;상기 강유전체막 상에 상부전극을 형성하는 단계;상기 상부전극을 패터닝하여 상기 셀 영역의 상기 강유전체막 상에만 잔류시키는 단계;상기 상부전극을 포함한 상기 강유전체막 상에 수소확산방지막을 형성하는 단계; 및상기 셀 영역 상에만 잔류되도록 상기 주변회로 영역 상부의 상기 수소확산방지막과 상기 강유전체막을 동시에 식각하여 제거하는 단계를 포함하는 강유전체 메모리 소자의 제조방법.
- 제1항에 있어서상기 수소확산방지막과 상기 강유전체막을 동시에 제거하는 단계는,상기 셀 영역을 덮고 상기 주변회로영역을 노출시키는 마스크를 형성하는 단계 및상기 마스크를 식각마스크로 하여 상기 강유전체막의 식각조건으로 상기 수소확산방지막과 상기 강유전체막을 동시에 식각하는 단계를 포함하는 강유전체 메모리 소자의 제조방법.
- 제1항 또는 제2항에 있어서상기 수소확산방지막은 Al2O3 막인 것을 특징으로 하는 강유전체 메모리 소자의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020020023019A KR100846364B1 (ko) | 2002-04-26 | 2002-04-26 | 수소확산방지막을 구비한 내장형 강유전체 메모리 소자의제조방법 |
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KR1020020023019A KR100846364B1 (ko) | 2002-04-26 | 2002-04-26 | 수소확산방지막을 구비한 내장형 강유전체 메모리 소자의제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030084347A KR20030084347A (ko) | 2003-11-01 |
KR100846364B1 true KR100846364B1 (ko) | 2008-07-15 |
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KR1020020023019A Expired - Fee Related KR100846364B1 (ko) | 2002-04-26 | 2002-04-26 | 수소확산방지막을 구비한 내장형 강유전체 메모리 소자의제조방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100846364B1 (ko) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11135736A (ja) * | 1997-10-31 | 1999-05-21 | Nec Corp | 半導体装置及びその製造方法 |
JP2001015703A (ja) * | 1999-07-02 | 2001-01-19 | Nec Corp | 混載lsi半導体装置 |
KR20010029846A (ko) * | 1999-06-29 | 2001-04-16 | 니시가키 코지 | 수소 배리어 층을 갖는 반도체 장치 |
-
2002
- 2002-04-26 KR KR1020020023019A patent/KR100846364B1/ko not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11135736A (ja) * | 1997-10-31 | 1999-05-21 | Nec Corp | 半導体装置及びその製造方法 |
KR20010029846A (ko) * | 1999-06-29 | 2001-04-16 | 니시가키 코지 | 수소 배리어 층을 갖는 반도체 장치 |
JP2001015703A (ja) * | 1999-07-02 | 2001-01-19 | Nec Corp | 混載lsi半導体装置 |
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KR20030084347A (ko) | 2003-11-01 |
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