KR100888617B1 - 상변화 메모리 장치 및 그 형성 방법 - Google Patents
상변화 메모리 장치 및 그 형성 방법 Download PDFInfo
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- KR100888617B1 KR100888617B1 KR1020070059001A KR20070059001A KR100888617B1 KR 100888617 B1 KR100888617 B1 KR 100888617B1 KR 1020070059001 A KR1020070059001 A KR 1020070059001A KR 20070059001 A KR20070059001 A KR 20070059001A KR 100888617 B1 KR100888617 B1 KR 100888617B1
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- Prior art keywords
- phase change
- change material
- opening
- precursor
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- 238000000034 method Methods 0.000 title claims abstract description 102
- 230000008859 change Effects 0.000 title claims abstract description 32
- 239000012782 phase change material Substances 0.000 claims abstract description 143
- 239000002243 precursor Substances 0.000 claims abstract description 91
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims description 72
- 230000008569 process Effects 0.000 claims description 55
- 229910052732 germanium Inorganic materials 0.000 claims description 25
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 25
- 229910052714 tellurium Inorganic materials 0.000 claims description 24
- 229910052787 antimony Inorganic materials 0.000 claims description 21
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 20
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 20
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 125000003342 alkenyl group Chemical group 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000000304 alkynyl group Chemical group 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 238000005229 chemical vapour deposition Methods 0.000 claims description 9
- 238000000231 atomic layer deposition Methods 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 description 17
- 239000010937 tungsten Substances 0.000 description 17
- -1 chalcogenide compound Chemical class 0.000 description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 11
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 10
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052719 titanium Inorganic materials 0.000 description 9
- 239000010936 titanium Substances 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- 229910052735 hafnium Inorganic materials 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 229910052582 BN Inorganic materials 0.000 description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- NMJKIRUDPFBRHW-UHFFFAOYSA-N titanium Chemical compound [Ti].[Ti] NMJKIRUDPFBRHW-UHFFFAOYSA-N 0.000 description 5
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- ZGUQGPFMMTZGBQ-UHFFFAOYSA-N [Al].[Al].[Zr] Chemical compound [Al].[Al].[Zr] ZGUQGPFMMTZGBQ-UHFFFAOYSA-N 0.000 description 3
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 3
- UNQHSZOIUSRWHT-UHFFFAOYSA-N aluminum molybdenum Chemical compound [Al].[Mo] UNQHSZOIUSRWHT-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 description 3
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 description 3
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 3
- 150000001786 chalcogen compounds Chemical class 0.000 description 3
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 229910000457 iridium oxide Inorganic materials 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 3
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- UVGLBOPDEUYYCS-UHFFFAOYSA-N silicon zirconium Chemical compound [Si].[Zr] UVGLBOPDEUYYCS-UHFFFAOYSA-N 0.000 description 3
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229910001936 tantalum oxide Inorganic materials 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 229910002909 Bi-Te Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000618 GeSbTe Inorganic materials 0.000 description 1
- 229910005900 GeTe Inorganic materials 0.000 description 1
- 229910018321 SbTe Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- LNGCCWNRTBPYAG-UHFFFAOYSA-N aluminum tantalum Chemical compound [Al].[Ta] LNGCCWNRTBPYAG-UHFFFAOYSA-N 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QDMRQDKMCNPQQH-UHFFFAOYSA-N boranylidynetitanium Chemical compound [B].[Ti] QDMRQDKMCNPQQH-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 1
- 238000005891 transamination reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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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
- H10N70/20—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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
-
- 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
-
- 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
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
- H10N70/8265—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices on sidewalls of dielectric structures, e.g. mesa-shaped or cup-shaped 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
- H10N70/841—Electrodes
- H10N70/8413—Electrodes adapted for resistive heating
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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
- H10N70/8825—Selenides, e.g. GeSe
-
- 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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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Crystallography & Structural Chemistry (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims (27)
- 삭제
- 기판에 상변화 물질용 전구체들 및 질소를 포함하는 반응성 라디칼을 제공하여 상변화 물질막을 형성하는 단계를 포함하되,상기 반응성 라디칼은 화학식 NRmH3-m(1≤m≤2, m은 정수) 또는 N2RnH4-n(0≤n≤2, n은 정수)을 갖고, 상기 R은 탄화수소기인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 2 항에 있어서,상기 탄화수소기는 알킬기(alkyl group), 알케닐기(alkenyl group), 알키닐기(alkynyl group) 또는 알렌기(allenic group)인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 3 항에 있어서,상기 알킬기의 탄소 수는 1 이상 10 이하이고, 상기 알케닐기의 탄소 수는 2 이상 12 이하이고, 상기 알키닐기의 탄소 수는 2 이상 13 이하인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 기판에 상변화 물질용 전구체들 및 질소를 포함하는 반응성 라디칼을 제공하여 상변화 물질막을 형성하는 단계를 포함하되,상기 상변화 물질용 전구체들 중 적어도 하나는 아민기(amine group)를 포함하는 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 5 항에 있어서,상기 상변화 물질용 전구체들은 탄화수소기를 포함하고,상기 탄화수소기는 알킬기(alkyl group), 알케닐기(alkenyl group), 알키닐기(alkynyl group) 또는 알렌기(allenic group)인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 6 항에 있어서,상기 알킬기의 탄소 수는 1 이상 10 이하이고, 상기 알케닐기의 탄소 수는 2 이상 12 이하이고, 상기 알키닐기의 탄소 수는 2 이상 13 이하인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 2 항 내지 제 7 항 중 어느 한 항에 있어서,상기 상변화 물질용 전구체들은 게르마늄 전구체, 안티몬 전구체 및 텔루르 전구체를 포함하는 상변화 메모리 장치의 형성 방법.
- 제 8 항에 있어서,상기 게르마늄 전구체는 화학식 GeR1 x(NR2R3)4-x(0≤x≤3, x는 정수)을 갖고, 상기 R1, R2 및 R3은 수소 또는 탄화수소기인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 9 항에 있어서,상기 탄화수소기는 알킬기(alkyl group), 알케닐기(alkenyl group), 알키닐기(alkynyl group) 또는 알렌기(allenic group)인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 8 항에 있어서,상기 안티몬 전구체는 화학식 SbR1 y(NR2R3)3-y(0≤y≤2, y는 정수)을 갖고, 상기 R1, R2 및 R3은 수소 또는 탄화수소기인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 11 항에 있어서,상기 탄화수소기는 알킬기(alkyl group), 알케닐기(alkenyl group), 알키닐기(alkynyl group) 또는 알렌기(allenic group)인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 8 항에 있어서,상기 텔루르 전구체는 화학식 TeR1 z(NR2R3)2-z(0≤z≤2, z는 정수)을 갖고, 상기 R1, R2 및 R3은 수소 또는 탄화수소기인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 13 항에 있어서,상기 탄화수소기는 알킬기(alkyl group), 알케닐기(alkenyl group), 알키닐기(alkynyl group) 또는 알렌기(allenic group)인 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 8 항에 있어서,상기 게르마늄 전구체, 상기 안티몬 전구체 및 상기 텔루르 전구체는 주기적 및 교번적으로 제공되고,상기 반응성 라디칼은 상기 게르마늄 전구체, 상기 안티몬 전구체 및 상기 텔루르 전구체 중 어느 하나의 전구체가 제공된 후 다른 전구체가 제공되기 전에 제공되는 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 8 항에 있어서,상기 게르마늄 전구체 및 상기 안티몬 전구체는 주기적 및 교번적으로 제공되고,상기 텔루르 전구체는 상기 게르마늄 전구체 및 상기 안티몬 전구체와 함께 제공되고,상기 반응성 라디칼은 상기 게르마늄 전구체 및 상기 안티몬 전구체 중 어느 하나의 전구체가 제공된 후 다른 전구체가 제공되기 전에 제공되는 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 2 항 내지 제 7 항 중 어느 한 항에 있어서,상기 상변화 물질막은 150~250℃의 공정 온도에서 형성되는 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 17 항에 있어서,상기 상변화 물질막은 원자층증착 공정 또는 화학기상증착 공정을 수행하는 것에 형성되는 것을 특징으로 하는 상변화 메모리 장치의 형성 방법.
- 제 2 항 내지 제 7 항 중 어느 한 항에 있어서,상기 기판 상에 제 1 개구부를 갖는 제 1 절연막을 형성하는 단계; 및상기 상변화 물질막 상에 제 2 도전체를 형성하는 단계를 더 포함하되,상기 상변화 물질막은 상기 제 1 개구부 내에 형성되는 상변화 메모리 장치의 형성방법.
- 제 19 항에 있어서,상기 제1 개구부의 폭은 50nm 이하인 상변화 메모리 장치의 형성 방법.
- 제 19 항에 있어서,상기 상변화 물질막을 형성하는 단계는:상기 제1 개구부의 바닥 및 측벽 상에 제1 도전막을 형성하는 단계;상기 제1 개구부 내에 상기 제1 도전막 상에 제2 절연막을 형성하는 단계; 및상기 제1 개구부의 측벽 상에 형성된 제1 도전막의 일부분을 제거하여 제1 도전체를 형성하고 상기 제2 절연막과 상기 제1 절연막 사이에 제2 개구부를 형성하는 단계; 및상기 제2 개구부 내에 상변화 물질을 증착하는 단계를 포함하는 상변화 메모리 장치의 형성 방법.
- 제 21 항에 있어서,상기 제2 개구부는 고리 형태를 나타내는 상변화 메모리 장치의 형성 방법.
- 삭제
- 제1 도전체를 포함하는 기판;상기 제1 도전체를 노출하는 개구부를 갖는 제1 절연막;상기 개구부 내에 제공된 상변화 물질막; 및상기 상변화 물질막 상에 제공된 제2 도전체를 포함하되,상기 상변화 물질막의 폭은 50nm 이하이고,상기 상변화 물질막을 구성하는 그레인은 10nm 이하인 것을 특징으로 하는 상변화 메모리 장치.
- 제 24 항에 있어서,상기 제1 도전체는 상기 개구부의 바닥에 제공된 제1 부분 및 상기 제1 부분에서 연속하여 상기 개구부의 측벽을 따라 제공된 제2 부분을 포함하고,상기 상변화 물질막은 상기 제1 도전체의 상기 제2 부분에 연결되어 상기 개구부의 측벽을 따라 제공되는 것을 특징으로 하는 상변화 메모리 장치.
- 제 25 항에 있어서,상기 개구부 내에 제공된 제2 절연막을 더 포함하며,상기 제1 절연막과 상기 제2 절연막 사이에 상기 제1 도전체의 제2 부분 및 상기 상변화 물질막이 위치하는 상변화 메모리 장치.
- 제 26 항에 있어서,상기 상변화 물질막은 고리 형태를 나타내는 상변화 메모리 장치.
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US12/136,176 US7943502B2 (en) | 2007-06-15 | 2008-06-10 | Method of forming a phase change memory device |
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TW097122338A TW200908303A (en) | 2007-06-15 | 2008-06-13 | Phase change memory device and method of forming the same |
US13/082,557 US8263963B2 (en) | 2007-06-15 | 2011-04-08 | Phase change memory device |
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US20110180774A1 (en) | 2011-07-28 |
TW200908303A (en) | 2009-02-16 |
US20120319069A1 (en) | 2012-12-20 |
US7943502B2 (en) | 2011-05-17 |
US20080308785A1 (en) | 2008-12-18 |
KR20080110348A (ko) | 2008-12-18 |
US8263963B2 (en) | 2012-09-11 |
JP2008311664A (ja) | 2008-12-25 |
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