KR20040035747A - 비휘발성 저항 가변 장치 및 프로그램가능 메모리 셀의형성 방법 - Google Patents
비휘발성 저항 가변 장치 및 프로그램가능 메모리 셀의형성 방법 Download PDFInfo
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- KR20040035747A KR20040035747A KR10-2004-7003081A KR20047003081A KR20040035747A KR 20040035747 A KR20040035747 A KR 20040035747A KR 20047003081 A KR20047003081 A KR 20047003081A KR 20040035747 A KR20040035747 A KR 20040035747A
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- chalcogenide
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- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000000463 material Substances 0.000 claims abstract description 100
- 150000004770 chalcogenides Chemical class 0.000 claims abstract description 80
- 229910052709 silver Inorganic materials 0.000 claims abstract description 52
- 239000004332 silver Substances 0.000 claims abstract description 52
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000007772 electrode material Substances 0.000 claims abstract description 39
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 21
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 239000011630 iodine Substances 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 230000001678 irradiating effect Effects 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 52
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 51
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 9
- 235000012431 wafers Nutrition 0.000 description 9
- 239000012634 fragment Substances 0.000 description 7
- QIHHYQWNYKOHEV-UHFFFAOYSA-N 4-tert-butyl-3-nitrobenzoic acid Chemical group CC(C)(C)C1=CC=C(C(O)=O)C=C1[N+]([O-])=O QIHHYQWNYKOHEV-UHFFFAOYSA-N 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 229910052732 germanium Inorganic materials 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000010416 ion conductor Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- -1 silver ions Chemical class 0.000 description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 229910052789 astatine Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 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
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
- H10N70/245—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies the species being metal cations, e.g. programmable metallization cells
-
- 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
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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
- H10N70/011—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
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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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/041—Modification of switching materials after formation, e.g. doping
- H10N70/046—Modification of switching materials after formation, e.g. doping by diffusion, e.g. photo-dissolution
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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
- H10N70/011—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
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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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- 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
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- Manufacturing & Machinery (AREA)
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Memories (AREA)
- Electrodes Of Semiconductors (AREA)
- Semiconductor Integrated Circuits (AREA)
- Read Only Memory (AREA)
Abstract
Description
Claims (33)
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 적어도 하나의 원소를 포함하는 단계;상기 칼코게나이드 재료 위에 은 포함 층을 형성하는 단계;은을 조사하여 상기 은 포함 층과 칼코게나이드 재료와의 계면에서 칼코게나이드 재료의 칼코제아니드 결합을 효과적으로 끊고 적어도 일부의 은을 칼코게나이드 재료에 확산시키고, 칼코게나이드 재료의 외주면을 형성하는 단계;조사 후에, 노출에 앞서 칼코게나이드 재료 외주면의 거칠기를 감소시키는데 효과적인 요오드 포함 유동체에 칼코게나이드 재료 외주면을 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜 적어도 상기 칼코게나이드 재료 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제4항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 은 포함 층은 대부분 원소 은인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 조사는 외주면의 적어도 일부로서 Ag2Se를 형성하는데 효과적이고, 에칭은 Ag2Se의 적어도 일부를 에칭하여 버리는데 효과적이고 그럼으로써 적어도 일부분은 상기 거칠기 감소에 기여하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 비휘발성 저항 가변 장치를 메모리 회로의 프로그램가능 메모리 셀에 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제1항에 있어서, 상기 제1 도전 전극 재료와 제2 도전 전극 재료는 다른 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 적어도 하나의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료를 형성한 후에, 상기 칼코게나이드 포함 재료 위에 Ag2Se를 형성하는 단계;조사 후에, Ag2Se의 적어도 일부를 에칭하여 버리는데 효과적인 요오드 포함 유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시키고 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 비휘발성 저항 가변 장치를 메모리 회로의 프로그램가능 메모리 셀에 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제16항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 상기 제2 도전 전극 재료를 피착시켜 적어도 칼코게나이드 재료 위를 연속하여 완전히 피복하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제11항에 있어서, 노출은 Ag2Se의 거의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 비휘발성 저항 가변 장치의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 적어도 하나의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료를 형성한 후에, 상기 칼코게나이드 포함 재료 위에 Ag2Se의 비연속 층을 형성하는 단계;조사 후에, 적어도 일부의 Ag2Se를 에칭하여 버리는데 효과적인 요오드 포함유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜, 적어도 칼코게나이드 재료 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제23항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 제20항에 있어서, 노출은 Ag2Se의 거의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 비휘발성 저항 가변 장치의 형성 방법.
- 메모리 회로의 프로그램가능 메모리 셀의 형성 방법에 있어서,기판 상에 제1 도전 전극 재료를 형성하는 단계;상기 제1 도전 전극 재료 위에 거의 비정질의 칼코게나이드 포함 재료를 형성하는 단계로서, 칼코게나이드 재료는 AxSey를 포함하는데, 여기서 "A"는 주기율표의 13족, 14족, 15족, 또는 17족으로부터 선택되는 적어도 하나의 원소를 포함하는 단계;상기 칼코게나이드 포함 재료 위에 은 포함 층을 형성하는 단계;은을 조사하여 상기 은 포함 층과 칼코게나이드 재료와의 계면에서 칼코게나이드 재료의 칼코게나이드 결합을 효과적으로 끊고 적어도 일부의 은을 칼코게나이드 재료에 확산시키는 단계로서, 조사는 칼코게나이드 포함 재료 위에 Ag2Se의 비연속 층을 효과적으로 형성하도록 행해지고, 조사는 Ag2Se의 아래에 놓이는 칼코게나이드 재료를 거의 비정질 상태로 효과적으로 유지하게 행해지는 단계;조사 후에, 적어도 대부분의 Ag2Se를 에칭하여 버리는데 효과적인 요오드 포함 유동체에 Ag2Se를 노출시키는 단계; 및노출 후에, 상기 칼코게나이드 재료 위에 제2 도전 전극 재료를 피착시켜,적어도 칼코게나이드 재료 위를 연속하여 완전히 피복하고, 장치의 전극에 상기 제2 도전 전극 재료를 형성하는 단계를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 액체인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 요오드화물 용액인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 요오드 포함 유동체는 요오드화 칼륨 용액인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제29항에 있어서, 상기 요오드화 칼륨 용액은 20%에서 50%까지의 요오드화 칼륨 용액의 1리터당 5에서 30 그램까지의 I2를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 상기 은 포함 층은 대부분 원소 은인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, "A"는 Ge를 포함하는 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
- 제26항에 있어서, 노출은 Ag2Se의 거의 모두를 에칭하여 버리는데 효과적인 것을 특징으로 하는 메모리 회로의 프로그램가능 메모리 셀의 형성 방법.
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- 2002-08-28 AT AT02770455T patent/ATE349076T1/de not_active IP Right Cessation
- 2002-08-28 JP JP2003523032A patent/JP4067490B2/ja not_active Expired - Lifetime
- 2002-08-28 DE DE60216942T patent/DE60216942T2/de not_active Expired - Lifetime
-
2004
- 2004-04-16 US US10/825,319 patent/US7067348B2/en not_active Expired - Fee Related
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2006
- 2006-05-09 US US11/430,046 patent/US7396699B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100800739B1 (ko) * | 2004-09-30 | 2008-02-01 | 인피니언 테크놀로지스 아게 | 저항성 메모리 소자 |
Also Published As
Publication number | Publication date |
---|---|
DE60216942T2 (de) | 2007-10-04 |
EP1430548B1 (en) | 2006-12-20 |
ATE349076T1 (de) | 2007-01-15 |
US20030049912A1 (en) | 2003-03-13 |
KR100800254B1 (ko) | 2008-02-01 |
EP1430548A2 (en) | 2004-06-23 |
CN1550048A (zh) | 2004-11-24 |
US20040191961A1 (en) | 2004-09-30 |
DE60216942D1 (de) | 2007-02-01 |
US7396699B2 (en) | 2008-07-08 |
US7067348B2 (en) | 2006-06-27 |
JP2005501426A (ja) | 2005-01-13 |
JP4067490B2 (ja) | 2008-03-26 |
US6784018B2 (en) | 2004-08-31 |
AU2002335692A1 (en) | 2003-03-10 |
WO2003019691A3 (en) | 2004-01-08 |
US20060270099A1 (en) | 2006-11-30 |
WO2003019691A2 (en) | 2003-03-06 |
CN1550048B (zh) | 2011-01-12 |
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