KR100322220B1 - 반도체 메모리 소자 및 그 제조 방법 - Google Patents
반도체 메모리 소자 및 그 제조 방법 Download PDFInfo
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- KR100322220B1 KR100322220B1 KR1019990012616A KR19990012616A KR100322220B1 KR 100322220 B1 KR100322220 B1 KR 100322220B1 KR 1019990012616 A KR1019990012616 A KR 1019990012616A KR 19990012616 A KR19990012616 A KR 19990012616A KR 100322220 B1 KR100322220 B1 KR 100322220B1
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- thin film
- ferroelectric thin
- semiconductor memory
- memory device
- capacitor
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000010409 thin film Substances 0.000 claims abstract description 95
- 239000013078 crystal Substances 0.000 claims abstract description 69
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 239000010408 film Substances 0.000 claims abstract description 36
- 230000015654 memory Effects 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 21
- 230000003746 surface roughness Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 229910052745 lead Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000010899 nucleation Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims 4
- 229910052779 Neodymium Inorganic materials 0.000 claims 2
- 229910052787 antimony Inorganic materials 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 229910052738 indium Inorganic materials 0.000 claims 2
- 229910052746 lanthanum Inorganic materials 0.000 claims 2
- 229910052749 magnesium Inorganic materials 0.000 claims 2
- 229910052748 manganese Inorganic materials 0.000 claims 2
- 229910052758 niobium Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 229910052712 strontium Inorganic materials 0.000 claims 2
- 229910052718 tin Inorganic materials 0.000 claims 2
- 229910052726 zirconium Inorganic materials 0.000 claims 2
- 229910052789 astatine Inorganic materials 0.000 claims 1
- 229910052788 barium Inorganic materials 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000010287 polarization Effects 0.000 abstract description 22
- 230000006870 function Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000013500 data storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004151 rapid thermal annealing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 229910015801 BaSrTiO Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 208000023414 familial retinal arterial macroaneurysm Diseases 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- -1 oxides Chemical class 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
-
- 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
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02197—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides the material having a perovskite structure, e.g. BaTiO3
-
- 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
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31691—Inorganic layers composed of oxides or glassy oxides or oxide based glass with perovskite structure
-
- 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
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims (11)
- 강유전체 박막 캐패시터를 메모리 캐패시터로서 이용하는 반도체 메모리 소자에 있어서,상기 캐패시터는,적어도 하부 전극, 강유전체 박막 및 상부 전극을 포함하고,상기 강유전체 박막은 복수의 결정 입자로 이루어지며, 또한 상기 강유전체 박막의 막 두께 방향을 법선으로 한 면 내에서, 상기 결정 입자 직경의 상대 표준 편차가 13% 이하인 것을 특징으로 하는 반도체 메모리 소자.
- 강유전체 박막 캐패시터를 메모리 캐패시터로서 이용하는 반도체 메모리 소자에 있어서,상기 캐패시터는,적어도 하부 전극, 강유전체 박막 및 상부 전극을 포함하고,상기 강유전체 박막은 복수의 결정 입자로 이루어지며, 또한 상기 강유전체 박막의 막 두께 방향을 법선으로 한 면 내에서, 상기 강유전체 박막의 평균 결정 입자가 100㎚ 이상, 메모리 셀 길이 이하이고, 상기 결정 입자 직경의 상대 표준 편차가 13% 이하인 것을 특징으로 하는 반도체 메모리 소자.
- 제1항에 있어서, 상기 강유전체 박막의 결정 입자가 막 두께 방향으로 거의 평행한 기둥 형상을 갖고, 상기 기둥 형상 결정 입자는 막 두께 방향으로 입자 경계를 갖지 않는 것을 특징으로 하는 반도체 메모리 소자.
- 제1항에 있어서,상기 강유전체 박막의 표면 거칠기의 최고치와 최저치의 차가, 상기 강유전체 박막의 평균막 두께에 대해 40% 이하인 것을 특징으로 하는 반도체 메모리 소자.
- 제1항에 있어서, 상기 강유전체 박막의 표면 거칠기의 평균 표준 편차가 8㎚ 이하인 것을 특징으로 하는 반도체 메모리 소자.
- 제1항에 있어서, 상기 강유전체 박막으로서 페로브스카이트 구조를 갖는 ABO3형 산화물을 사용하고, 상기 강유전체 박막이 기판에 대해 수직 방향으로 (111) 우선 배향인 것을 특징으로 하는 반도체 메모리 소자.
- 제1항에 있어서, 상기 강유전체 박막이 그 적어도 일부에 ABO3의 결정 혹은 비정질 혹은 양자가 혼합된 조성인 것을 특징으로 하는 반도체 메모리 소자(단, A는 Pb, La, Sr, Nd 및 Ba 중에서 선택되는 적어도 1개의 원소이고, B는 Zr, Ti, Mn, Mg, Nb, Sn, Sb 및 In 중에서 선택되는 적어도 하나의 원소이고, O는 산소를 나타냄).
- 제1항 또는 제2항 기재의 반도체 메모리 소자의 제조 방법에 있어서,고밀도인 결정 입자의 집합체를 갖는 강유전체 박막을 형성하기 위해 상기 하부 전극과 상기 강유전체 박막 계면에 미소 핵 형성을 촉진하기 위한 초기 핵을 설치하는 공정을 갖는 것을 특징으로 하는 반도체 메모리 소자의 제조 방법.
- 반도체 메모리 소자의 제조 방법에 있어서,기판 상에 하부 전극을 형성하는 단계와,상기 하부 전극 상에 미소한 초기 핵층을 형성하는 단계와,상기 초기 핵층 상에 유전체 박막을 형성하는 단계와,상기 유전체 박막 상에 상부 전극을 형성하는 단계를 포함하고,상기 초기 핵층을 형성하는 단계는 상기 하부 전극을 형성한 기판을 열 처리하여 이루어진 것을 특징으로 하는 반도체 메모리 소자의 제조 방법.
- 제8항에 있어서, 상기 초기 핵이 그 적어도 일부에 ABO3의 결정 혹은 비정질 혹은 양자가 혼합된 조성을 갖는 것을 특징으로 하는 반도체 메모리 소자의 제조 방법(단, A는 Pb, La, Sr, Nd 및 Ba 중에서 선택되는 적어도 1개의 원소이고, B는 Zr, Ti, Mn, Mg, Nb, Sn, Sb 및 In 중에서 선택되는 적어도 1개의 원소이며, O는 산소를 나타냄).
- 제8항에 있어서, 상기 초기 핵은 상기 하부 전극과 기판 간의 계면 접착층, 혹은 상기 강유전체 박막에 포함되는 조성 중 적어도 하나의 원소를 갖는 산화물인 것을 특징으로 하는 반도체 메모리 소자의 제조 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9711798 | 1998-04-09 | ||
JP1998-097117 | 1998-04-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990083104A KR19990083104A (ko) | 1999-11-25 |
KR100322220B1 true KR100322220B1 (ko) | 2002-02-07 |
Family
ID=14183637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990012616A Expired - Fee Related KR100322220B1 (ko) | 1998-04-09 | 1999-04-09 | 반도체 메모리 소자 및 그 제조 방법 |
Country Status (3)
Country | Link |
---|---|
US (4) | US6239457B1 (ko) |
KR (1) | KR100322220B1 (ko) |
TW (1) | TW404021B (ko) |
Families Citing this family (24)
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TW404021B (en) * | 1998-04-09 | 2000-09-01 | Hitachi Ltd | Semiconductor memory device and manufacturing method thereof |
JP4825373B2 (ja) * | 2001-08-14 | 2011-11-30 | ローム株式会社 | 強誘電体薄膜の製造方法およびこれを用いた強誘電体メモリの製造方法 |
JP2003243536A (ja) * | 2002-02-15 | 2003-08-29 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP3791614B2 (ja) * | 2002-10-24 | 2006-06-28 | セイコーエプソン株式会社 | 強誘電体膜、強誘電体メモリ装置、圧電素子、半導体素子、圧電アクチュエータ、液体噴射ヘッド及びプリンタ |
JP4601896B2 (ja) | 2002-10-30 | 2010-12-22 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
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US7153706B2 (en) * | 2004-04-21 | 2006-12-26 | Texas Instruments Incorporated | Ferroelectric capacitor having a substantially planar dielectric layer and a method of manufacture therefor |
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JP2008227896A (ja) * | 2007-03-13 | 2008-09-25 | Seiko Epson Corp | データ処理装置及び電子機器 |
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JP5523167B2 (ja) * | 2010-03-30 | 2014-06-18 | 日本碍子株式会社 | セラミックス及び圧電/電歪素子 |
US9870960B2 (en) | 2014-12-18 | 2018-01-16 | International Business Machines Corporation | Capacitance monitoring using X-ray diffraction |
DE102018108152A1 (de) | 2017-08-31 | 2019-02-28 | Taiwan Semiconductor Manufacturing Co. Ltd. | Halbleiterbauelement und herstellungsverfahren davon |
US11107919B2 (en) * | 2017-08-31 | 2021-08-31 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of manufacturing semiconductor device including ferroelectric layer having columnar-shaped crystals |
US11121139B2 (en) * | 2017-11-16 | 2021-09-14 | International Business Machines Corporation | Hafnium oxide and zirconium oxide based ferroelectric devices with textured iridium bottom electrodes |
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JPH1012832A (ja) | 1996-06-21 | 1998-01-16 | Texas Instr Japan Ltd | 強誘電体キャパシタの作製方法及び強誘電体メモリ装置の製造方法 |
DE19640241C1 (de) * | 1996-09-30 | 1998-04-16 | Siemens Ag | Herstellverfahren für eine hoch-epsilon-dielektrische oder ferroelektrische Schicht und Verwendung des Verfahrens |
US6025205A (en) * | 1997-01-07 | 2000-02-15 | Tong Yang Cement Corporation | Apparatus and methods of forming preferred orientation-controlled platinum films using nitrogen |
EP0867952B8 (en) * | 1997-03-27 | 2003-05-28 | Seiko Epson Corporation | Process of producing a piezoelectric element |
US6417110B1 (en) * | 1997-08-23 | 2002-07-09 | Radiant Technologies Inc | Method for constructing heat resistant electrode structures on silicon substrates |
TW404021B (en) * | 1998-04-09 | 2000-09-01 | Hitachi Ltd | Semiconductor memory device and manufacturing method thereof |
-
1999
- 1999-04-08 TW TW088105615A patent/TW404021B/zh not_active IP Right Cessation
- 1999-04-09 KR KR1019990012616A patent/KR100322220B1/ko not_active Expired - Fee Related
- 1999-04-09 US US09/288,672 patent/US6239457B1/en not_active Expired - Fee Related
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2001
- 2001-05-04 US US09/848,420 patent/US6445025B2/en not_active Expired - Fee Related
- 2001-05-08 US US09/850,224 patent/US6579754B2/en not_active Expired - Fee Related
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2002
- 2002-06-28 US US10/183,669 patent/US6995058B2/en not_active Expired - Fee Related
Also Published As
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US6995058B2 (en) | 2006-02-07 |
US6239457B1 (en) | 2001-05-29 |
KR19990083104A (ko) | 1999-11-25 |
US20010029052A1 (en) | 2001-10-11 |
US20010023952A1 (en) | 2001-09-27 |
US20020182754A1 (en) | 2002-12-05 |
US6445025B2 (en) | 2002-09-03 |
TW404021B (en) | 2000-09-01 |
US6579754B2 (en) | 2003-06-17 |
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