JP5334400B2 - 相変化層の表面処理工程を含む相変化メモリ素子の製造方法 - Google Patents
相変化層の表面処理工程を含む相変化メモリ素子の製造方法 Download PDFInfo
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- JP5334400B2 JP5334400B2 JP2007267039A JP2007267039A JP5334400B2 JP 5334400 B2 JP5334400 B2 JP 5334400B2 JP 2007267039 A JP2007267039 A JP 2007267039A JP 2007267039 A JP2007267039 A JP 2007267039A JP 5334400 B2 JP5334400 B2 JP 5334400B2
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- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 238000004381 surface treatment Methods 0.000 title claims description 19
- 238000000231 atomic layer deposition Methods 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 24
- 239000003153 chemical reaction reagent Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 27
- 239000002243 precursor Substances 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 21
- 238000010926 purge Methods 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 239000012495 reaction gas Substances 0.000 claims description 8
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 5
- ZMAPKOCENOWQRE-UHFFFAOYSA-N diethoxy(diethyl)silane Chemical compound CCO[Si](CC)(CC)OCC ZMAPKOCENOWQRE-UHFFFAOYSA-N 0.000 claims description 5
- VHPUZTHRFWIGAW-UHFFFAOYSA-N dimethoxy-di(propan-2-yl)silane Chemical compound CO[Si](OC)(C(C)C)C(C)C VHPUZTHRFWIGAW-UHFFFAOYSA-N 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- 238000003618 dip coating Methods 0.000 claims description 4
- 229910052732 germanium Inorganic materials 0.000 claims description 4
- 238000004528 spin coating Methods 0.000 claims description 4
- 229910052714 tellurium Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- NHYFIJRXGOQNFS-UHFFFAOYSA-N dimethoxy-bis(2-methylpropyl)silane Chemical compound CC(C)C[Si](OC)(CC(C)C)OC NHYFIJRXGOQNFS-UHFFFAOYSA-N 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 119
- 239000011247 coating layer Substances 0.000 abstract 3
- 239000011229 interlayer Substances 0.000 description 28
- 239000012782 phase change material Substances 0.000 description 22
- 229910000618 GeSbTe Inorganic materials 0.000 description 17
- 239000012535 impurity Substances 0.000 description 16
- 239000000758 substrate Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000002902 organometallic compounds Chemical class 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910020175 SiOH Inorganic materials 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- VVKJJEAEVBNODX-UHFFFAOYSA-N diethoxy-di(propan-2-yl)silane Chemical compound CCO[Si](C(C)C)(C(C)C)OCC VVKJJEAEVBNODX-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- H10N70/20—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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/30—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having three or more electrodes, e.g. transistors
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of switching materials, e.g. deposition of layers
- H10N70/023—Formation of switching materials, e.g. deposition of layers by chemical vapor deposition, e.g. MOCVD, ALD
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/061—Shaping switching materials
- H10N70/066—Shaping switching materials by filling of openings, e.g. damascene method
-
- 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
-
- 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
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0004—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements comprising amorphous/crystalline phase transition cells
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Semiconductor Memories (AREA)
Description
42 ゲート絶縁膜
44 ゲート電極
46 第1層間絶縁層
50 導電性プラグ
60 下部電極
62 第2層間絶縁層
64 BEC層
H1 コンタクトホール
H2 ビアホール
A1 第1不純物領域
A2 第2不純物領域
Claims (12)
- 相変化層の表面処理工程を含む相変化メモリ素子の製造方法において、
前記相変化層を形成する前に前記相変化層が形成される下部膜の表面にコーティング膜を形成する工程を含み、
前記コーティング膜は、前記下部膜の表面にアルキル系ラジカルの付着を容易にする化学構造を有し、
前記コーティング膜は、(alkyl) x (OR) y (Cl) z Si(x+y+z=4,y≧1,ORはアルコキシ基)で表現される物質群から選択された何れか一つの試薬で形成することを特徴とする相変化メモリ素子の製造方法。 - 前記相変化層を形成する工程は、原子層堆積法を利用することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。
- 前記コーティング膜は、ディップコーティング方式及びスピンコーティング方式のうち何れか一つを利用して形成することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。
- 前記コーティング膜は、原子層堆積法で形成することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。
- 前記試薬は、ジエチルジエトキシシラン、ジイソプロピルジメトキシシラン及びジイソブチルジメトキシシランのうち何れか一つであることを特徴とする請求項1に記載の相変化メモリ素子の製造方法。
- 前記コーティング膜は、一層の原子層で形成することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。
- 前記相変化層を形成する工程は、
前記相変化層のソース物質のうち少なくとも一つを供給する工程と、
第1パージガスを供給する工程と、
反応ガスを供給する工程と、
第2パージガスを供給する工程と、を含むことを特徴とする請求項2に記載の相変化メモリ素子の製造方法。 - 前記反応ガスは、水素ガスまたはプラズマであることを特徴とする請求項7に記載の相変化メモリ素子の製造方法。
- 前記ソース物質は、ゲルマニウムとアリル基とを含む前駆体、アンチモンとアルキル基とを含む前駆体及び、テルルとアルキル基とを含む前駆体を含むことを特徴とする請求項7に記載の相変化メモリ素子の製造方法。
- 前記コーティング膜を形成する前に、
前記下部膜にビアホールを形成する工程と、
前記ビアホールに導電性プラグを充填する工程と、を実施することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。 - 前記コーティング膜を形成する前に、
前記下部膜にビアホールを形成し、
前記コーティング膜を形成した後、
前記コーティング膜で覆われた前記下部膜上に前記ビアホールを充填する前記相変化層を形成することを特徴とする請求項1に記載の相変化メモリ素子の製造方法。 - 前記下部膜の上面に形成された前記相変化層を除去する工程をさらに含むことを特徴とする請求項11に記載の相変化メモリ素子の製造方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2006-0100009 | 2006-10-13 | ||
KR1020060100009A KR101169395B1 (ko) | 2006-10-13 | 2006-10-13 | 상변화층의 표면처리공정을 포함하는 상변화 메모리 소자의제조방법 |
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JP2008098645A JP2008098645A (ja) | 2008-04-24 |
JP5334400B2 true JP5334400B2 (ja) | 2013-11-06 |
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Country Status (4)
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US (1) | US7754586B2 (ja) |
JP (1) | JP5334400B2 (ja) |
KR (1) | KR101169395B1 (ja) |
CN (1) | CN101162758B (ja) |
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EP2107798B1 (en) | 2008-04-04 | 2010-12-08 | Sony Corporation | Imaging apparatus, image processing apparatus, and exposure control method |
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KR20100107345A (ko) | 2009-03-25 | 2010-10-05 | 삼성전자주식회사 | 반도체 메모리 장치 |
KR101559912B1 (ko) | 2009-03-31 | 2015-10-13 | 삼성전자주식회사 | 상변화 메모리 소자의 형성방법 |
JP5299260B2 (ja) * | 2009-12-24 | 2013-09-25 | 信越化学工業株式会社 | 固体材料の表面処理方法 |
US8148197B2 (en) | 2010-07-27 | 2012-04-03 | Micron Technology, Inc. | Methods of forming germanium-antimony-tellurium materials and a method of forming a semiconductor device structure including the same |
KR101907972B1 (ko) | 2011-10-31 | 2018-10-17 | 주식회사 원익아이피에스 | 기판처리장치 및 방법 |
CN111564553A (zh) * | 2020-04-08 | 2020-08-21 | 中国科学院上海微系统与信息技术研究所 | 钽-锑-碲相变材料的沉积方法及存储器单元的制备方法 |
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- 2007-04-13 CN CN2007100960843A patent/CN101162758B/zh active Active
- 2007-10-12 US US11/907,472 patent/US7754586B2/en active Active
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US20080090326A1 (en) | 2008-04-17 |
CN101162758A (zh) | 2008-04-16 |
JP2008098645A (ja) | 2008-04-24 |
KR101169395B1 (ko) | 2012-07-30 |
KR20080033815A (ko) | 2008-04-17 |
CN101162758B (zh) | 2011-09-14 |
US7754586B2 (en) | 2010-07-13 |
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