KR102718273B1 - 저항 변화 메모리 소자 및 그 제조 방법과 전자 장치 - Google Patents
저항 변화 메모리 소자 및 그 제조 방법과 전자 장치 Download PDFInfo
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- KR102718273B1 KR102718273B1 KR1020190053613A KR20190053613A KR102718273B1 KR 102718273 B1 KR102718273 B1 KR 102718273B1 KR 1020190053613 A KR1020190053613 A KR 1020190053613A KR 20190053613 A KR20190053613 A KR 20190053613A KR 102718273 B1 KR102718273 B1 KR 102718273B1
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- KR
- South Korea
- Prior art keywords
- resistance change
- halide
- quantum dots
- cadmium quantum
- change layer
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 169
- 239000002096 quantum dot Substances 0.000 claims abstract description 139
- -1 halide anions Chemical class 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims abstract description 23
- 150000004820 halides Chemical class 0.000 claims description 73
- 150000001661 cadmium Chemical class 0.000 claims description 44
- 239000006185 dispersion Substances 0.000 claims description 37
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 20
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052793 cadmium Inorganic materials 0.000 claims description 18
- 239000013110 organic ligand Substances 0.000 claims description 18
- 239000004054 semiconductor nanocrystal Substances 0.000 claims description 18
- 239000002243 precursor Substances 0.000 claims description 15
- 239000011669 selenium Substances 0.000 claims description 15
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 14
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 14
- 239000011701 zinc Substances 0.000 claims description 12
- 229910052738 indium Inorganic materials 0.000 claims description 10
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002798 polar solvent Substances 0.000 claims description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 8
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 8
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 8
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Chemical compound [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 claims description 8
- 229910001507 metal halide Inorganic materials 0.000 claims description 8
- 150000005309 metal halides Chemical class 0.000 claims description 8
- 229910052711 selenium Inorganic materials 0.000 claims description 8
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 claims description 8
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 claims description 8
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 claims description 8
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 7
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011592 zinc chloride Substances 0.000 claims description 7
- 235000005074 zinc chloride Nutrition 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- RMSOEGBYNWXXBG-UHFFFAOYSA-N 1-chloronaphthalen-2-ol Chemical compound C1=CC=CC2=C(Cl)C(O)=CC=C21 RMSOEGBYNWXXBG-UHFFFAOYSA-N 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
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- ZASWJUOMEGBQCQ-UHFFFAOYSA-L dibromolead Chemical compound Br[Pb]Br ZASWJUOMEGBQCQ-UHFFFAOYSA-L 0.000 claims description 4
- UPWPDUACHOATKO-UHFFFAOYSA-K gallium trichloride Chemical compound Cl[Ga](Cl)Cl UPWPDUACHOATKO-UHFFFAOYSA-K 0.000 claims description 4
- SRVXDMYFQIODQI-UHFFFAOYSA-K gallium(iii) bromide Chemical compound Br[Ga](Br)Br SRVXDMYFQIODQI-UHFFFAOYSA-K 0.000 claims description 4
- DWRNSCDYNYYYHT-UHFFFAOYSA-K gallium(iii) iodide Chemical compound I[Ga](I)I DWRNSCDYNYYYHT-UHFFFAOYSA-K 0.000 claims description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 4
- PSCMQHVBLHHWTO-UHFFFAOYSA-K indium(iii) chloride Chemical compound Cl[In](Cl)Cl PSCMQHVBLHHWTO-UHFFFAOYSA-K 0.000 claims description 4
- YAFKGUAJYKXPDI-UHFFFAOYSA-J lead tetrafluoride Chemical compound F[Pb](F)(F)F YAFKGUAJYKXPDI-UHFFFAOYSA-J 0.000 claims description 4
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 claims description 4
- 239000003446 ligand Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- OTCKOJUMXQWKQG-UHFFFAOYSA-L magnesium bromide Chemical compound [Mg+2].[Br-].[Br-] OTCKOJUMXQWKQG-UHFFFAOYSA-L 0.000 claims description 4
- 229910001623 magnesium bromide Inorganic materials 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 4
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 4
- BLQJIBCZHWBKSL-UHFFFAOYSA-L magnesium iodide Chemical compound [Mg+2].[I-].[I-] BLQJIBCZHWBKSL-UHFFFAOYSA-L 0.000 claims description 4
- 229910001641 magnesium iodide Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- JKNHZOAONLKYQL-UHFFFAOYSA-K tribromoindigane Chemical compound Br[In](Br)Br JKNHZOAONLKYQL-UHFFFAOYSA-K 0.000 claims description 4
- RMUKCGUDVKEQPL-UHFFFAOYSA-K triiodoindigane Chemical compound I[In](I)I RMUKCGUDVKEQPL-UHFFFAOYSA-K 0.000 claims description 4
- 229940102001 zinc bromide Drugs 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 122
- 150000001875 compounds Chemical group 0.000 description 58
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- 238000006243 chemical reaction Methods 0.000 description 10
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- 239000002184 metal Substances 0.000 description 8
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- 238000003786 synthesis reaction Methods 0.000 description 8
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 8
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 6
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- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
도 2는 일 구현예에 따른 저항 변화 메모리 소자를 단위 메모리 셀의 일 예를 개략적으로 보여주는 단면도이고,
도 3은 일 구현예에 따른 저항 변화 메모리 소자의 단위 메모리 셀의 다른 예를 개략적으로 보여주는 단면도이고,
도 4는 일 구현예에 따른 저항 변화 메모리 소자의 단위 메모리 셀의 또 다른 예를 개략적으로 보여주는 단면도이고,
도 5는 일 구현예에 따른 저항 변화 메모리 소자의 단위 메모리 셀의 또 다른 예를 개략적으로 보여주는 단면도이고,
도 6은 실시예 1에 따른 저항 변화 메모리 소자의 전류-전압 특성을 보여주는 그래프이고,
도 7은 비교예 1에 따른 저항 변화 메모리 소자의 전류-전압 특성을 보여주는 그래프이고,
도 8은 실시예 1에 따른 저항 변화 메모리 소자의 데이터 유지 특성을 보여주는 그래프이다.
11: 하부 전극
12: 상부 전극
13: 저항 변화 층
13a: 양자점
13aa: 표면에 할라이드 음이온을 포함한 양자점
13ab: 표면에 할라이드 음이온을 포함하지 않는 양자점
13-1: 제1 저항 변화 층
13-2: 제2 저항 변화 층
13-3: 제3 저항 변화 층
14, 15: 보조층
101: 제1 신호 라인
102: 제2 신호 라인
Claims (20)
- 서로 마주하는 제1 전극과 제2 전극, 그리고
상기 제1 전극과 상기 제2 전극 사이에 위치하는 저항 변화 층
을 포함하고,
상기 저항 변화 층은 비카드뮴 양자점(Cd-free quantum dots)을 포함하며,
상기 비카드뮴 양자점의 일부는 표면에 할라이드 음이온을 포함한 비카드뮴 양자점이고,
상기 비카드뮴 양자점의 일부는 표면에 할라이드 음이온을 포함하지 않는 비카드뮴 양자점인
저항 변화 메모리 소자.
- 제1항에서,
상기 할라이드 음이온은 할라이드로부터 유래되고,
상기 할라이드는 아연, 인듐, 납, 갈륨, 마그네슘, 리튬 또는 이들의 조합을 포함하는 금속 할라이드를 포함하는
저항 변화 메모리 소자.
- 제2항에서,
상기 금속 할라이드는 아연 불화물, 아연 염화물, 아연 브롬화물, 아연 요오드화물, 인듐 불화물, 인듐 염화물, 인듐 브롬화물, 인듐 요오드화물, 납 불화물, 납 염화물, 납 브롬화물, 납 요오드화물, 갈륨 불화물, 갈륨 염화물, 갈륨 브롬화물, 갈륨 요오드화물, 마그네슘 불화물, 마그네슘 염화물, 마그네슘 브롬화물, 마그네슘 요오드화물, 리튬 불화물, 리튬 염화물, 리튬 브롬화물, 리튬 요오드화물 또는 이들의 조합을 포함하는 저항 변화 메모리 소자.
- 제1항에서,
상기 비카드뮴 양자점은 아연, 인듐 또는 이들의 조합을 포함하는 저항 변화 메모리 소자.
- 제4항에서,
상기 비카드뮴 양자점은 ZnSe, ZnSeTe, InZn, InP, InZnP 또는 이들의 조합을 포함하는 저항 변화 메모리 소자.
- 제1항에서,
상기 비카드뮴 양자점은
제1 반도체 나노결정을 포함하는 코어, 그리고
상기 코어 상에 배치되고 상기 제1 반도체 나노결정과 다른 제2 반도체 나노결정을 포함하는 쉘
을 포함하는 저항 변화 메모리 소자.
- 제6항에서,
상기 제1 반도체 나노결정은 ZnSe, ZnSeTe, InP, InZnP 또는 이들의 조합을 포함하는 저항 변화 메모리 소자.
- 제6항에서,
상기 제2 반도체 나노결정은 아연, 셀레늄, 황 또는 이들의 조합을 포함하는 저항 변화 메모리 소자.
- 제1항에서,
상기 비카드뮴 양자점은 표면에 유기 리간드를 더 포함하고,
상기 유기 리간드는 RCOOH, RNH2, R2NH, R3N, RH2PO, R2HPO, R3PO, RH2P, R2HP, R3P, ROH, RCOOR, RPO(OH)2, RHPOOH, R2POOH 또는 이들의 조합을 포함하며,
여기서 R은 서로 같거나 다르며 각각 독립적으로 치환 또는 비치환된 C1 내지 C40 지방족 탄화수소, 치환 또는 비치환된 C6 내지 C20 방향족 탄화수소 또는 이들의 조합인
저항 변화 메모리 소자.
- 삭제
- 제1항에서,
상기 저항 변화 층은
상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점을 포함하는 제1 저항 변화 층, 그리고
상기 표면에 할라이드 음이온을 포함하지 않는 비카드뮴 양자점을 포함하는 제2 저항 변화 층
을 포함하는 저항 변화 메모리 소자.
- 제11항에서,
상기 표면에 할라이드 음이온을 포함하지 않는 비카드뮴 양자점은 카르복실산 함유 리간드로 치환된 비카드뮴 양자점을 포함하는 저항 변화 메모리 소자.
- 제11항에서,
상기 제2 저항 변화 층은 상기 제1 저항 변화 층 위에 위치하고,
상기 저항 변화 층은 상기 제2 저항 변화 층 위에 위치하고 상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점을 포함하는 제3 저항 변화 층을 더 포함하는
저항 변화 메모리 소자.
- 제1 전극을 형성하는 단계,
상기 제1 전극 위에 저항 변화 층을 형성하는 단계, 그리고
상기 저항 변화 층 위에 제2 전극을 형성하는 단계
를 포함하고,
상기 저항 변화 층은 비카드뮴 양자점을 포함하며,
상기 비카드뮴 양자점의 적어도 일부는 표면에 할라이드 음이온을 포함한 비카드뮴 양자점이고,
상기 저항 변화 층을 형성하는 단계는
상기 비카드뮴 양자점을 포함한 분산액을 준비하는 단계,
상기 비카드뮴 양자점을 포함한 분산액을 코팅하여 상기 비카드뮴 양자점을 포함하는 전구체 층을 형성하는 단계,
극성 용매 내에 할라이드를 포함하는 할라이드 용액을 준비하는 단계, 그리고
상기 전구체 층에 상기 할라이드 용액을 공급하여 상기 비카드뮴 양자점의 적어도 일부를 상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점으로 바꾸는 단계
를 포함하거나,
상기 비카드뮴 양자점을 포함한 분산액을 준비하는 단계,
극성 용매 내에 할라이드를 포함하는 할라이드 용액을 준비하는 단계, 그리고
상기 비카드뮴 양자점을 포함한 분산액과 상기 할라이드 용액을 혼합하여 상기 비카드뮴 양자점의 적어도 일부를 상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점으로 바꾸는 단계
를 포함하는 저항 변화 메모리 소자의 제조 방법.
- 삭제
- 삭제
- 제14항에서,
상기 비카드뮴 양자점을 포함한 분산액과 상기 할라이드 용액을 혼합하는 단계는
상기 비카드뮴 양자점 100중량부에 대한 상기 할라이드의 함량이 0.1중량% 내지 10중량%가 되도록 상기 비카드뮴 양자점을 포함한 분산액과 상기 할라이드 용액을 혼합하는
저항 변화 메모리 소자의 제조 방법.
- 제14항에서,
상기 저항 변화 층을 형성하는 단계는
상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점을 포함하는 제1 저항 변화 층을 형성하는 단계, 그리고
상기 제1 저항 변화 층 위에 표면에 할라이드 음이온을 포함하지 않는 비카드뮴 양자점을 포함하는 제2 저항 변화 층을 형성하는 단계
를 포함하는 저항 변화 메모리 소자의 제조 방법.
- 제18항에서,
상기 저항 변화 층을 형성하는 단계는
상기 제2 저항 변화 층 위에 상기 표면에 할라이드 음이온을 포함한 비카드뮴 양자점을 포함하는 제3 저항 변화 층을 형성하는 단계를 더 포함하는
저항 변화 메모리 소자의 제조 방법.
- 제1항 내지 제9항 및 제11항 내지 제13항 중 어느 한 항에 따른 저항 변화 메모리 소자를 포함하는 전자 장치.
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