KR101027350B1 - 다층의 블록킹막을 구비하는 비휘발성메모리장치 및 그제조 방법 - Google Patents
다층의 블록킹막을 구비하는 비휘발성메모리장치 및 그제조 방법 Download PDFInfo
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- KR101027350B1 KR101027350B1 KR1020080040832A KR20080040832A KR101027350B1 KR 101027350 B1 KR101027350 B1 KR 101027350B1 KR 1020080040832 A KR1020080040832 A KR 1020080040832A KR 20080040832 A KR20080040832 A KR 20080040832A KR 101027350 B1 KR101027350 B1 KR 101027350B1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 66
- 238000003860 storage Methods 0.000 claims abstract description 137
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims description 64
- 239000002184 metal Substances 0.000 claims description 64
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 40
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 40
- 230000005641 tunneling Effects 0.000 claims description 36
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 25
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 24
- 229920005591 polysilicon Polymers 0.000 claims description 24
- 229910003855 HfAlO Inorganic materials 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 20
- 230000003647 oxidation Effects 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
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- 239000000758 substrate Substances 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
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- 229910052735 hafnium Inorganic materials 0.000 description 10
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- 229910052688 Gadolinium Inorganic materials 0.000 description 6
- 241000286819 Malo Species 0.000 description 6
- 229910052779 Neodymium Inorganic materials 0.000 description 6
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- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 6
- 238000005468 ion implantation Methods 0.000 description 6
- 229910052741 iridium Inorganic materials 0.000 description 6
- 229910052746 lanthanum Inorganic materials 0.000 description 6
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- 229910052759 nickel Inorganic materials 0.000 description 6
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- 229910052706 scandium Inorganic materials 0.000 description 6
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 6
- 229910052718 tin Inorganic materials 0.000 description 6
- 229910052727 yttrium Inorganic materials 0.000 description 6
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- 238000000231 atomic layer deposition Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 4
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- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40117—Multistep manufacturing processes for data storage electrodes the electrodes comprising a charge-trapping insulator
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- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
- H01L21/28185—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation with a treatment, e.g. annealing, after the formation of the gate insulator and before the formation of the definitive gate conductor
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66833—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a charge trapping gate insulator, e.g. MNOS transistors
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
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- Condensed Matter Physics & Semiconductors (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
Description
Claims (29)
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- 반도체기판 상에 터널링막을 형성하는 단계;상기 터널링막 상에 전하저장막을 형성하는 단계;상기 전하저장막 상에 제1블록킹막을 형성하는 단계;상기 제1블록킹막 상에 상기 제1블록킹막보다 에너지 밴드갭이 작고 유전율이 큰 제2블록킹막을 형성하는 단계;상기 제2블록킹막에 대해 어닐을 실시하는 단계;상기 제2블록킹막 상에 상기 제2블록킹막보다 에너지밴드갭이 큰 제3블록킹막을 형성하는 단계; 및상기 제3블록킹막 상에 도전막을 형성하는 단계를 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제2블록킹막은 상기 제1블록킹막보다 유전율이 크고 트랩사이트밀도가 높은 고유전체막을 포함하는 비휘발성메모리장치 제조 방법.
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- 제12항에 있어서,상기 제1블록킹막은 산화막 또는 질소가 혼합된 산화막을 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제1블록킹막은 실리콘산화막(SiO2) 또는 실리콘산화질화막(SiON)을 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제2블록킹막은 HfAlO, ZrAlO, LaAlO, DyScO, GdAlO, YAlO, NdAlO, CeAlO, PrAlO 또는 DyScO 중에서 선택된 어느 하나를 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 전하저장막은 실리콘질화막 또는 폴리실리콘막을 포함하는 비휘발성 메모리장치 제조 방법.
- 제12항에 있어서,상기 제1블록킹막은 상기 전하저장막의 일부를 산화시켜 형성하는 비휘발성메모리장치 제조 방법.
- 제20항에 있어서,상기 전하저장막의 산화는 라디칼산화법(radical oxidation)을 이용하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제1블록킹막은 상기 전하저장막의 일부를 산화시킨 후 상기 산화된 부분을 다시 질화시켜 형성하는 비휘발성메모리장치 제조 방법.
- 제22항에 있어서,상기 질화는, 열질화법(thermal nitridation) 또는 플라즈마질화법(plasma nitridation)을 이용하는 비휘발성메모리장치 제조 방법.
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- 제12항에 있어서,상기 제3블록킹막은 상기 제2블록킹막보다 유전율은 낮고 상기 제1블록킹막보다 유전율이 높은 고유전체막을 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제3블록킹막은 금속이 혼합된 산화막을 포함하는 비휘발성메모리장치 제조 방법.
- 제12항에 있어서,상기 제3블록킹막은 알루미늄산화막(Al2O3)을 포함하는 비휘발성메모리장치 제조 방법.
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KR1020080040832A KR101027350B1 (ko) | 2008-04-30 | 2008-04-30 | 다층의 블록킹막을 구비하는 비휘발성메모리장치 및 그제조 방법 |
US12/430,481 US7928493B2 (en) | 2008-04-30 | 2009-04-27 | Nonvolatile memory device with multiple blocking layers and method of fabricating the same |
US13/047,258 US8039337B2 (en) | 2008-04-30 | 2011-03-14 | Nonvolatile memory device with multiple blocking layers and method of fabricating the same |
US13/166,273 US8241974B2 (en) | 2008-04-30 | 2011-06-22 | Nonvolatile memory device with multiple blocking layers and method of fabricating the same |
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KR1020080040832A KR101027350B1 (ko) | 2008-04-30 | 2008-04-30 | 다층의 블록킹막을 구비하는 비휘발성메모리장치 및 그제조 방법 |
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KR101142909B1 (ko) * | 2006-12-26 | 2012-05-10 | 에스케이하이닉스 주식회사 | 비휘발성 메모리 소자의 제조방법 |
JP5398388B2 (ja) * | 2009-06-30 | 2014-01-29 | 株式会社東芝 | 不揮発性半導体記憶装置 |
US8592325B2 (en) * | 2010-01-11 | 2013-11-26 | International Business Machines Corporation | Insulating layers on different semiconductor materials |
KR101160017B1 (ko) * | 2010-11-18 | 2012-06-25 | 에스케이하이닉스 주식회사 | 플로팅 게이트형 비휘발성 메모리 소자 및 그 제조 방법 |
US8829592B2 (en) | 2010-12-14 | 2014-09-09 | Intel Corporation | Non-volatile storage element having dual work-function electrodes |
KR102015578B1 (ko) * | 2012-09-11 | 2019-08-28 | 삼성전자주식회사 | 불휘발성 메모리 장치 및 그 형성방법 |
US9391084B2 (en) * | 2014-06-19 | 2016-07-12 | Macronix International Co., Ltd. | Bandgap-engineered memory with multiple charge trapping layers storing charge |
JP6877319B2 (ja) * | 2017-11-15 | 2021-05-26 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
CN108878512B (zh) * | 2018-06-29 | 2020-08-25 | 云南大学 | 一种金属氧化物叠层场效应材料及其应用 |
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JP2009302502A (ja) * | 2008-05-12 | 2009-12-24 | Toshiba Corp | 半導体装置の製造方法 |
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- 2008-04-30 KR KR1020080040832A patent/KR101027350B1/ko active IP Right Grant
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2009
- 2009-04-27 US US12/430,481 patent/US7928493B2/en active Active
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2011
- 2011-03-14 US US13/047,258 patent/US8039337B2/en active Active
- 2011-06-22 US US13/166,273 patent/US8241974B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20010066386A (ko) * | 1999-12-31 | 2001-07-11 | 박종섭 | 플래시 메모리의 게이트전극 제조방법 |
KR20030002298A (ko) * | 2001-06-28 | 2003-01-08 | 삼성전자 주식회사 | 비휘발성 반도체 메모리 장치의 부유 트랩형 메모리 소자 |
KR20060104717A (ko) * | 2005-03-31 | 2006-10-09 | 삼성전자주식회사 | 불휘발성 메모리 장치의 게이트 구조물 및 이의 제조 방법 |
Also Published As
Publication number | Publication date |
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US8241974B2 (en) | 2012-08-14 |
US8039337B2 (en) | 2011-10-18 |
US7928493B2 (en) | 2011-04-19 |
US20090273018A1 (en) | 2009-11-05 |
US20110250746A1 (en) | 2011-10-13 |
KR20090114942A (ko) | 2009-11-04 |
US20110165769A1 (en) | 2011-07-07 |
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