JP5354945B2 - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP5354945B2 JP5354945B2 JP2008085412A JP2008085412A JP5354945B2 JP 5354945 B2 JP5354945 B2 JP 5354945B2 JP 2008085412 A JP2008085412 A JP 2008085412A JP 2008085412 A JP2008085412 A JP 2008085412A JP 5354945 B2 JP5354945 B2 JP 5354945B2
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- 239000004065 semiconductor Substances 0.000 title claims description 98
- 238000000034 method Methods 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 239000000758 substrate Substances 0.000 claims description 242
- 150000002500 ions Chemical class 0.000 claims description 165
- 239000013078 crystal Substances 0.000 claims description 68
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 42
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 41
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 28
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 20
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 13
- 230000001678 irradiating effect Effects 0.000 claims description 10
- 238000005229 chemical vapour deposition Methods 0.000 claims description 7
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 6
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 150000001282 organosilanes Chemical class 0.000 claims description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 3
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 claims description 3
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 200
- 239000001257 hydrogen Substances 0.000 description 40
- 229910052739 hydrogen Inorganic materials 0.000 description 40
- 239000002585 base Substances 0.000 description 35
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 33
- 238000006243 chemical reaction Methods 0.000 description 32
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 32
- 241000894007 species Species 0.000 description 32
- 239000011521 glass Substances 0.000 description 28
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 21
- 229910052710 silicon Inorganic materials 0.000 description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 18
- 230000001133 acceleration Effects 0.000 description 18
- 239000010703 silicon Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 238000000926 separation method Methods 0.000 description 14
- 238000004364 calculation method Methods 0.000 description 12
- 230000005684 electric field Effects 0.000 description 12
- 238000001069 Raman spectroscopy Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 238000012545 processing Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000006870 function Effects 0.000 description 10
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- 238000005259 measurement Methods 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- -1 hydrogen ions Chemical class 0.000 description 7
- 238000002955 isolation Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
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- 238000005468 ion implantation Methods 0.000 description 6
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 235000012431 wafers Nutrition 0.000 description 5
- 239000005407 aluminoborosilicate glass Substances 0.000 description 4
- 239000005354 aluminosilicate glass Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 229910052788 barium Inorganic materials 0.000 description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 4
- 239000005388 borosilicate glass Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
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- 229910052734 helium Inorganic materials 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000010884 ion-beam technique Methods 0.000 description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- 238000001237 Raman spectrum Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001678 elastic recoil detection analysis Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
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- 230000003746 surface roughness Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 102100040844 Dual specificity protein kinase CLK2 Human genes 0.000 description 2
- 101000749291 Homo sapiens Dual specificity protein kinase CLK2 Proteins 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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- 230000007017 scission Effects 0.000 description 2
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000293849 Cordylanthus Species 0.000 description 1
- 102100040862 Dual specificity protein kinase CLK1 Human genes 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 101000749294 Homo sapiens Dual specificity protein kinase CLK1 Proteins 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000000342 Monte Carlo simulation Methods 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- MXSJNBRAMXILSE-UHFFFAOYSA-N [Si].[P].[B] Chemical compound [Si].[P].[B] MXSJNBRAMXILSE-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- GPTXWRGISTZRIO-UHFFFAOYSA-N chlorquinaldol Chemical compound ClC1=CC(Cl)=C(O)C2=NC(C)=CC=C21 GPTXWRGISTZRIO-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000001887 electron backscatter diffraction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- SYHGEUNFJIGTRX-UHFFFAOYSA-N methylenedioxypyrovalerone Chemical compound C=1C=C2OCOC2=CC=1C(=O)C(CCC)N1CCCC1 SYHGEUNFJIGTRX-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76251—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques
- H01L21/76254—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques with separation/delamination along an ion implanted layer, e.g. Smart-cut, Unibond
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
- H01L21/0214—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC the material being a silicon oxynitride, e.g. SiON or SiON:H
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/84—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thin Film Transistor (AREA)
- Element Separation (AREA)
Description
上記のような水素プラズマ中には、H+、H2 +、H3 +といった水素イオン種が存在する。ここで、各水素イオン種の反応過程(生成過程、消滅過程)について、以下に反応式を列挙する。
e+H→e+H++e ・・・・・ (1)
e+H2→e+H2 ++e ・・・・・ (2)
e+H2→e+(H2)*→e+H+H ・・・・・ (3)
e+H2 +→e+(H2 +)*→e+H++H ・・・・・ (4)
H2 ++H2→H3 ++H ・・・・・ (5)
H2 ++H2→H++H+H2 ・・・・・ (6)
e+H3 +→e+H++H+H ・・・・・ (7)
e+H3 +→H2+H ・・・・・ (8)
e+H3 +→H+H+H ・・・・・ (9)
上記のように、H3 +は、主として反応式(5)により表される反応過程により生成される。一方で、反応式(5)と競合する反応として、反応式(6)により表される反応過程が存在する。H3 +が増加するためには、少なくとも、反応式(5)の反応が、反応式(6)の反応より多く起こる必要がある(なお、H3 +が減少する反応としては他にも(7)、(8)、(9)が存在するため、(5)の反応が(6)の反応より多いからといって、必ずしもH3 +が増加するとは限らない。)。反対に、反応式(5)の反応が、反応式(6)の反応より少ない場合には、プラズマ中におけるH3 +の割合は減少する。
ここで、イオン種の割合(特にH3 +の割合)が異なる例を示す。図15は、100%水素ガス(イオン源の圧力:4.7×10−2Pa)から生成されるイオンの質量分析結果を示すグラフである。なお、上記質量分析は、イオン源から引き出されたイオンを測定することにより行った。横軸はイオンの質量である。縦軸は、スペクトルの強度であり、イオンの数量に対応する。スペクトル中、質量1、2、3のピークは、それぞれ、H+、H2 +、H3 +に対応する。図15では、質量が異なるイオン種の数量を、質量3のイオン種を100とした場合の相対比で表している。図15から、上記イオン源により生成されるイオン種の割合は、H+:H2 +:H3 +=1:1:8程度となることが分かる。なお、このような割合のイオンは、プラズマを生成するプラズマソース部(イオン源)と、当該プラズマからイオンビームを引き出すための引出電極などから構成されるイオンドーピング装置によっても得ることが出来る。
図15のような複数のイオン種を含むプラズマを生成し、生成されたイオン種を質量分離しないで単結晶半導体基板に照射する場合、単結晶半導体基板の表面には、H+、H2 +、H3 +の各イオン種が照射される。イオンの照射から脆化層形成にかけてのメカニズムを再現するために、以下の5種類のモデルを考える。
1.照射されるイオン種がH+で、照射後もH+(H)である場合
2.照射されるイオン種がH2 +で、照射後もH2 +(H2)のままである場合
3.照射されるイオン種がH2 +で、照射後に2個のH(H+)に分裂する場合
4.照射されるイオン種がH3 +で、照射後もH3 +(H3)のままである場合
5.照射されるイオン種がH3 +で、照射後に3個のH(H+)に分裂する場合。
上記のモデルを基にして、水素イオン種をSi基板に照射する場合のシミュレーションを行った。シミュレーション用のソフトウェアとしては、SRIM(the Stopping and Range of Ions in Matter:モンテカルロ法によるイオン添加過程のシミュレーションソフトウェア、TRIM(the Transport of Ions in Matter)の改良版)を用いている。なお、計算の関係上、モデル2ではH2 +を質量2倍のH+に置き換えて計算した。また、モデル4ではH3 +を質量3倍のH+に置き換えて計算した。さらに、モデル3ではH2 +を運動エネルギー1/2のH+に置き換え、モデル5ではH3 +を運動エネルギー1/3のH+に置き換えて計算を行った。
[フィッティング関数]
=X/V×[モデル1のデータ]+Y/V×[モデル5のデータ]
図15に示すようなH3 +の割合を高めた水素イオン種を単結晶基板に照射することで、H3 +に起因する複数のメリットを享受することができる。例えば、H3 +はH+やHなどに分離し、それらが単結晶基板内に添加されるため、主にH+やH2 +を照射する場合と比較して、イオンの添加効率を向上させることができる。これにより、SOI基板の生産性向上を図ることができる。また、H3 +が分離した後のH+やHの運動エネルギーは小さくなる傾向にあるから、薄い半導体層を有するSOI基板の製造に向いている。
101 半導体基板
102 SOI層
103 脆化層
104 接合層
105 窒化シリコン層
106 酸化シリコン層
107 窒化シリコン層
108 素子分離絶縁層
109 ゲート絶縁層
110 ゲート電極
111 サイドウオール絶縁層
112 第1不純物領域
113 第2不純物領域
114 絶縁層
115 層間絶縁層
116 コンタクトホール
117 コンタクトプラグ
118 絶縁層
119 配線
120 窒素含有絶縁層
121 酸化シリコン膜
125 バリア層
200 マイクロプロセッサ
201 演算回路
202 演算回路制御部
203 命令解析部
204 割り込み制御部
205 タイミング制御部
206 レジスタ
207 レジスタ制御部
208 バスインターフェース
209 読み出し専用メモリ
210 ROMインターフェース
211 RFCPU
212 アナログ回路部
213 デジタル回路部
214 共振回路
215 整流回路
216 定電圧回路
217 リセット回路
218 発振回路
219 復調回路
220 変調回路
221 RFインターフェース
222 制御レジスタ
223 クロックコントローラ
224 CPUインターフェース
225 中央処理ユニット
226 ランダムアクセスメモリ
227 読み出し専用メモリ
228 アンテナ
229 容量部
230 電源管理回路
300 ガラス基板
301 単結晶シリコン基板
302 単結晶シリコン層
303 脆化層
304 酸化シリコン膜
305 酸化窒化シリコン膜
306 窒化酸化シリコン膜
Claims (3)
- 同一の原子から成る質量の異なる複数の種類のイオンを単結晶半導体基板に照射して、前記単結晶半導体基板の表面から所定の深さの領域に脆化層を形成し、
前記単結晶半導体基板上に、有機シランガスを用いた化学気相成長法により酸化シリコン膜を形成し、
前記酸化シリコン膜を介して、前記単結晶半導体基板とベース基板とを貼りあわせ、
加熱処理を行い、前記脆化層に沿って前記単結晶半導体基板を分離させ、前記ベース基板上に前記単結晶半導体基板の一部を単結晶半導体層として設け、
前記イオンは、H+イオン、H2 +イオン及びH3 +イオンを含み、
前記H3 +イオンの割合は、前記H+イオン及び前記H2 +イオンの割合よりも高いことを特徴とする半導体装置の作製方法。 - 請求項1において、
前記有機シランガスとして、珪酸エチル(TEOS:化学式Si(OC2H5)4)、テトラメチルシラン(化学式Si(CH3)4)、テトラメチルシクロテトラシロキサン(TMCTS)、オクタメチルシクロテトラシロキサン(OMCTS)、ヘキサメチルジシラザン(HMDS)、トリエトキシシラン(化学式SiH(OC2H5)3)、トリスジメチルアミノシラン(化学式SiH(N(CH3)2)3)から選ばれた一種を用いることを特徴とする半導体装置の作製方法。 - 請求項1又は2において、
マスクを用いて前記酸化シリコン膜及び前記単結晶半導体層をエッチングし、
前記エッチング後、少なくとも露出した前記単結晶半導体層の端面を窒化して、窒化シリコン層を形成することを特徴とする半導体装置の作製方法。
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KR20080042095A (ko) * | 2005-07-27 | 2008-05-14 | 실리콘 제너시스 코포레이션 | 제어된 클리빙 처리를 이용하여 플레이트 상에 다수의 타일영역을 제작하는 방법 및 구조 |
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KR101299604B1 (ko) | 2005-10-18 | 2013-08-26 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 그 제조 방법 |
US8153513B2 (en) | 2006-07-25 | 2012-04-10 | Silicon Genesis Corporation | Method and system for continuous large-area scanning implantation process |
FR2911430B1 (fr) | 2007-01-15 | 2009-04-17 | Soitec Silicon On Insulator | "procede de fabrication d'un substrat hybride" |
JP5048380B2 (ja) * | 2007-04-09 | 2012-10-17 | 信越化学工業株式会社 | 単結晶シリコン太陽電池の製造方法 |
EP1986230A2 (en) * | 2007-04-25 | 2008-10-29 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing SOI substrate and method of manufacturing semiconductor device |
KR101484296B1 (ko) * | 2007-06-26 | 2015-01-19 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 기판의 제작방법 |
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- 2008-03-10 US US12/073,741 patent/US8034694B2/en not_active Expired - Fee Related
- 2008-03-11 EP EP08004498A patent/EP1978553A3/en not_active Withdrawn
- 2008-03-12 KR KR1020080022773A patent/KR101441939B1/ko active IP Right Grant
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Publication number | Publication date |
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TWI549223B (zh) | 2016-09-11 |
KR20080090273A (ko) | 2008-10-08 |
EP1978553A3 (en) | 2010-06-16 |
TW200845291A (en) | 2008-11-16 |
TWI450360B (zh) | 2014-08-21 |
EP1978553A2 (en) | 2008-10-08 |
US8823063B2 (en) | 2014-09-02 |
US8034694B2 (en) | 2011-10-11 |
US9536774B2 (en) | 2017-01-03 |
KR101441939B1 (ko) | 2014-09-18 |
US20120025274A1 (en) | 2012-02-02 |
US20140329371A1 (en) | 2014-11-06 |
CN101281912B (zh) | 2013-01-23 |
CN101281912A (zh) | 2008-10-08 |
JP2008277789A (ja) | 2008-11-13 |
US20080246109A1 (en) | 2008-10-09 |
TW201448114A (zh) | 2014-12-16 |
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