KR100739000B1 - 상변화 기억 소자의 형성 방법 - Google Patents
상변화 기억 소자의 형성 방법 Download PDFInfo
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- KR100739000B1 KR100739000B1 KR1020060087666A KR20060087666A KR100739000B1 KR 100739000 B1 KR100739000 B1 KR 100739000B1 KR 1020060087666 A KR1020060087666 A KR 1020060087666A KR 20060087666 A KR20060087666 A KR 20060087666A KR 100739000 B1 KR100739000 B1 KR 100739000B1
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- 238000000034 method Methods 0.000 title claims abstract description 65
- 229920000642 polymer Polymers 0.000 claims abstract description 117
- 239000010410 layer Substances 0.000 claims abstract description 93
- 229920006254 polymer film Polymers 0.000 claims abstract description 45
- 239000011229 interlayer Substances 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 125000006850 spacer group Chemical group 0.000 claims abstract description 27
- 239000012782 phase change material Substances 0.000 claims abstract description 26
- 239000011148 porous material Substances 0.000 claims description 23
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 17
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 17
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- 229920002717 polyvinylpyridine Polymers 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 229920001485 poly(butyl acrylate) polymer Polymers 0.000 claims description 5
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 claims description 5
- 239000005062 Polybutadiene Substances 0.000 claims description 4
- 229920002857 polybutadiene Polymers 0.000 claims description 4
- 229920001195 polyisoprene Polymers 0.000 claims description 4
- 238000004528 spin coating Methods 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims 2
- 229920005597 polymer membrane Polymers 0.000 claims 2
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims 1
- 229920002554 vinyl polymer Polymers 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
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- 229910052782 aluminium Inorganic materials 0.000 description 6
- 229910052714 tellurium Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- -1 ZrSiN Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
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- 239000010703 silicon Substances 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
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- 229910018182 Al—Cu Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- 229910017931 Cu—Si Inorganic materials 0.000 description 2
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- 229910004200 TaSiN Inorganic materials 0.000 description 2
- 229910010038 TiAl Inorganic materials 0.000 description 2
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- 229910010282 TiON Inorganic materials 0.000 description 2
- 229910008482 TiSiN Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910008807 WSiN Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910005936 Ge—Sb Inorganic materials 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/231—Multistable switching devices, e.g. memristors based on solid-state phase change, e.g. between amorphous and crystalline phases, Ovshinsky effect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8825—Selenides, e.g. GeSe
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8828—Tellurides, e.g. GeSbTe
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/884—Switching materials based on at least one element of group IIIA, IVA or VA, e.g. elemental or compound semiconductors
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- 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
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Abstract
Description
Claims (17)
- 기판 상에 층간 절연막 및 몰드층을 차례로 형성하는 단계;상기 몰드층을 관통하는 가이드 개구부를 형성하는 단계;상기 가이드 개구부를 채우되. 제1 중합체로 이루어진 복수의 제1 중합체 블록 및 제2 중합체로 이루어진 복수의 제2 중합체 블록을 포함하는 이중 블록 중합체막을 상기 기판 상에 형성하는 단계;상기 제1 중합체 블록들이 결합된 제1 상 및 상기 제2 중합체 블록들이 결합된 제2 상으로 분리하는 단계;상기 제2 상을 제거하여 상기 가이드 개구부의 측벽에 중합체 스페이서를 형성하는 단계; 및상기 중합체 스페이서로 둘러싸인 포어(pore)에 노출된 상기 층간 절연막을 식각하여 히터 개구부를 형성하는 단계를 포함하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 중합체 스페이서를 제거하는 단계;상기 히터 개구부의 적어도 일부를 채우는 히터 도전막을 기판 상에 형성하는 단계;상기 히터 도전막 및 상기 몰드층을 상기 층간 절연막이 노출될때까지 평탄화시키어 상기 히터 개구부내에 히터 전극을 형성하는 단계; 및상기 층간 절연막 상에 차례로 적층된 상변화 물질 패턴 및 캐핑 전극을 형성하는 단계를 더 포함하되, 상기 상변화 물질 패턴은 상기 히터 전극과 접촉하는 상변화 기억 소자의 형성 방법.
- 제 2 항에 있어서,상기 히터 전극은 필라 형태(pillar-shaped) 또는 실린더 형태(cylinder-shaped)로 형성하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 제1 상 및 상기 제2 상은 상기 이중 블록 중합체막을 어닐링하여 분리하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 제2 상을 제거하는 단계는,상기 기판에 현상액을 사용하는 현상 공정을 수행하는 단계를 포함하되, 상기 제1 중합체의 상기 현상액에 대한 용해도는 상기 제2 중합체의 상기 현상액에 대한 용해도에 비하여 낮은 상변화 기억 소자의 형성 방법.
- 제 5 항에 있어서,상기 현상 공정을 수행하기 전에,상기 제1 상 및 제2 상으로 분리된 상기 이중 블록 중합체막에 광을 조사하는 단계를 더 포함하되, 상기 제1 중합체의 상기 광에 대한 반응감도와 상기 제2 중합체의 상기 광에 대한 반응감도가 서로 다른 상변화 기억 소자의 형성 방법.
- 제 6 항에 있어서,상기 광은 자외선인 상변화 기억 소자의 형성 방법.
- 제 5 항에 있어서,상기 현상액은 아세트산(acetic acid), 케톤(ketone)을 포함하는 용액, 알코올(alcohol)을 포함하는 용액 및 알데히드(aldehyde)를 포함하는 용액 중에서 선택된 어느 하나인 상변화 기억 소자의 형성 방법.
- 제 5 항에 있어서,상기 이중 블록 중합체막은 polystyrene-polymethylmethacrylate, polybutadiene-polybutylmethacrylate, polybutadiene-polydimethylsiloxane, polybutadiene-polymethylmethacrylate, polybutadiene-polyvinylpyridine, polyisoprene-polymethylmethacrylate, polyisoprene-polyvinylpyridine, polybutylacrylate-polymethylmethacrylate, polybutylacrylate-polyvinylpyridine, polyhexylacrylate-polyvinylpyridine, polyisobutylene-polybutylmethacrylate, polyisobutylene-polydimethoxysiloxane, polyisobutylene-polymethylmethacrylate, polyisobutylene-polyvinylpyridine, polybutylmethacrylate-polybutylacrylate, polybutylmethacrylate-polyvinylpyridine, polyethylene-polymethylmethacrylate, polymethylmethacrylate-polybutylacrylate, polymethylmethacrylate-polybutylmethacrylate, polystyrene-polybutadiene, polystyrene-polybutylacrylate, polystyrene-polybutylmethacrylate, polystyrene-polybutylstyrene, polystyrene-polydimethoxysiloxane, polystyrene-polyisoprene, polystyrene-polyvinylpyridine, polyethylene-polyvinylpyridine, polyvinylpyridine-polymethylmethacrylate, polyethyleneoxide-polyisoprene, polyethyleneoxide-polybutadiene, polyethyleneoxide-polystyrene 및 polyethyleneoxide-polymethylmethacrylate 중에서 선택된 어느 하나로 형성하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 이중 블록 중합체막을 형성하기 전에,상기 가이드 개구부를 갖는 기판 상에 표면 중합체막을 형성하는 단계를 더 포함하는 상변화 기억 소자의 형성 방법.
- 제 10 항에 있어서,상기 표면 중합체막은 상기 제1 중합체를 이루는 단량체 및 상기 제2 중합체 를 이루는 단량체가 무작위(random)로 배열된 중합체로 형성하는 상변화 기억 소자의 형성 방법.
- 제 10 항에 있어서,상기 표면 중합체막은 스핀 코팅 방식(spin coating method), 디핑법(dipping method) 및 증발법(evaporation method) 중에서 어느 하나로 형성하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 이중 블럭 중합체막의 전체 조성에서 상기 제2 중합체는 20 중량 % 내지 70 중량% 인 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 이중 블록 중합체막은 스핀 코팅 방식으로 형성하는 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 몰드층의 두께는 5 nm 내지 100 nm인 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 복수의 제1 중합체 블록의 크기들 및 상기 복수의 제2 중합체 블록의 크기들은 무작위인 상변화 기억 소자의 형성 방법.
- 제 1 항에 있어서,상기 포어는 평면적으로 원형, 타원형 및 장방형 중에 어느 하나로 형성되는 상변화 기억 소자의 형성 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020060087666A KR100739000B1 (ko) | 2006-09-11 | 2006-09-11 | 상변화 기억 소자의 형성 방법 |
US11/830,284 US7605087B2 (en) | 2006-09-11 | 2007-07-30 | Methods of forming semiconductor devices using di-block polymer layers |
TW096133927A TWI399875B (zh) | 2006-09-11 | 2007-09-11 | 使用二嵌段聚合物層形成半導體裝置之方法 |
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US8080615B2 (en) | 2007-06-19 | 2011-12-20 | Micron Technology, Inc. | Crosslinkable graft polymer non-preferentially wetted by polystyrene and polyethylene oxide |
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JP5749353B2 (ja) * | 2011-12-13 | 2015-07-15 | エンパイア テクノロジー ディベロップメント エルエルシー | エラストマーの接着 |
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