JP5876682B2 - 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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- JP5876682B2 JP5876682B2 JP2011169779A JP2011169779A JP5876682B2 JP 5876682 B2 JP5876682 B2 JP 5876682B2 JP 2011169779 A JP2011169779 A JP 2011169779A JP 2011169779 A JP2011169779 A JP 2011169779A JP 5876682 B2 JP5876682 B2 JP 5876682B2
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- drain electrode
- source electrode
- oxide semiconductor
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- 239000004065 semiconductor Substances 0.000 title claims description 164
- 238000000034 method Methods 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 46
- 229910052760 oxygen Inorganic materials 0.000 claims description 46
- 239000001301 oxygen Substances 0.000 claims description 46
- 238000004544 sputter deposition Methods 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 239000012298 atmosphere Substances 0.000 claims description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 238000001312 dry etching Methods 0.000 claims description 16
- 230000002441 reversible effect Effects 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 280
- 239000000758 substrate Substances 0.000 description 72
- 238000010438 heat treatment Methods 0.000 description 41
- 239000000463 material Substances 0.000 description 40
- 238000012360 testing method Methods 0.000 description 32
- 238000005259 measurement Methods 0.000 description 26
- 230000002829 reductive effect Effects 0.000 description 26
- 229910052721 tungsten Inorganic materials 0.000 description 26
- 239000010937 tungsten Substances 0.000 description 25
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 21
- 125000004429 atom Chemical group 0.000 description 21
- 239000001257 hydrogen Substances 0.000 description 19
- 229910052739 hydrogen Inorganic materials 0.000 description 19
- 229910052710 silicon Inorganic materials 0.000 description 18
- 239000010703 silicon Substances 0.000 description 18
- 229910007541 Zn O Inorganic materials 0.000 description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 16
- 229910052814 silicon oxide Inorganic materials 0.000 description 16
- 239000010408 film Substances 0.000 description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- 238000009832 plasma treatment Methods 0.000 description 12
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 10
- 230000005684 electric field Effects 0.000 description 9
- 230000006866 deterioration Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 229910044991 metal oxide Inorganic materials 0.000 description 7
- 150000004706 metal oxides Chemical group 0.000 description 7
- 238000000206 photolithography Methods 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 229910052733 gallium Inorganic materials 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000010453 quartz Substances 0.000 description 6
- 239000011787 zinc oxide Substances 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001678 elastic recoil detection analysis Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000001272 nitrous oxide Substances 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 4
- 238000005001 rutherford backscattering spectroscopy Methods 0.000 description 4
- 229910019092 Mg-O Inorganic materials 0.000 description 3
- 229910019395 Mg—O Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 229910052754 neon Inorganic materials 0.000 description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 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
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 239000011229 interlayer Substances 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
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- -1 tungsten nitride Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 108091006149 Electron carriers Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- NJWNEWQMQCGRDO-UHFFFAOYSA-N indium zinc Chemical compound [Zn].[In] NJWNEWQMQCGRDO-UHFFFAOYSA-N 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
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001552 radio frequency sputter deposition Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41733—Source or drain electrodes for field effect devices for thin film transistors with insulated gate
-
- 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- 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
- H01L29/66—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
- H01L29/66742—Thin film unipolar transistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
- Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
Description
本実施の形態では、半導体装置及び半導体装置の作製方法の一形態を、図1及び図2を用いて説明する。
(実施の形態2)
本発明の一態様である半導体装置は、さまざまな記憶装置、電子機器(遊技機も含む)に適用することができる。電子機器としては、例えば、テレビジョン装置(テレビまたはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラなどのカメラ、デジタルフォトフレーム、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。上記実施の形態で説明した半導体装置を具備する電子機器の例について説明する。
・電力:0.2kW(13.56MHz)
・圧力:0.6Pa
・温度:室温
・時間:5分
・成膜ガス:Ar(30sccm)、O2(15sccm)
・電力:0.5kW(DC)
・圧力:0.4Pa
・T−S間距離:60mm
・成膜時基板温度:200℃
・成膜ガス:Ar(25sccm)、O2(25sccm)
・電力:1.5kW(13.56MHz)
・圧力:0.4Pa
・T−S間距離:60mm
・成膜時基板温度:100℃
・電力:0.2kW(13.56MHz)
・圧力:0.6Pa
・温度:室温
・時間:3分
・成膜ガス:Ar(30sccm)、O2(15sccm)
・電力:0.5kW(DC)
・圧力:0.4Pa
・T−S間距離:60mm
・成膜時基板温度:200℃
102 絶縁層
104 曲面形状
106 酸化物半導体層
108a ソース電極
108b ドレイン電極
112 ゲート絶縁層
114 ゲート電極
118a ソース電極
118b ドレイン電極
151 トランジスタ
152 トランジスタ
208a ソース電極
208b ドレイン電極
301 本体
302 筐体
303 表示部
304 キーボード
311 本体
312 スタイラス
313 表示部
314 操作ボタン
315 外部インターフェイス
320 電子書籍
321 筐体
322 筐体
323 表示部
324 表示部
325 軸部
326 電源
327 操作キー
328 スピーカー
330 筐体
331 筐体
332 表示パネル
333 スピーカー
334 マイクロフォン
335 操作キー
336 ポインティングデバイス
337 カメラ用レンズ
338 外部接続端子
340 太陽電池セル
341 外部メモリスロット
360 テレビジョン装置
361 筐体
363 表示部
365 スタンド
502 第1のタングステン層
504 酸化窒化シリコン層
506 第2のタングステン層
508 酸化物半導体層
510 第2のタングステン層
1002 実線
1004 実線
1012 実線
1014 実線
1022 実線
1024 実線
1032 実線
1034 実線
1042 実線
1044 実線
1052 実線
1054 実線
Claims (3)
- 酸化物半導体層と、
前記酸化物半導体層上であって、前記酸化物半導体層と電気的に接続するソース電極及びドレイン電極と、
前記酸化物半導体層上、前記ソース電極上及びドレイン電極上のゲート絶縁層と、
前記ゲート絶縁層上のゲート電極と、を有し、
前記ソース電極及び前記ドレイン電極は、それぞれ、下端部にテーパー角を有し、
前記ソース電極及び前記ドレイン電極は、それぞれ、上端部に曲面形状を有する半導体装置の作製方法であって、
チャネル長方向に沿った断面における前記酸化物半導体層の側端部は、前記ソース電極及び前記ドレイン電極により覆われており、
前記ソース電極及び前記ドレイン電極は、前記酸化物半導体層上に導電層を成膜し、前記導電層をレジストマスクを用いたドライエッチングによって加工することで形成し、
前記ドライエッチング時に、前記レジストマスクを後退させながらエッチングを行うことで、前記ソース電極及び前記ドレイン電極の下端部に前記テーパー角を形成し、
前記ドライエッチング後に、前記ソース電極及び前記ドレイン電極に対し、希ガス、窒素、酸素及び酸化窒素を一以上含む雰囲気にて生成したプラズマを用いて処理を行うことで、前記ソース電極及び前記ドレイン電極の上端部に前記曲面形状を形成する半導体装置の作製方法。 - 酸化物半導体層と、
前記酸化物半導体層上であって、前記酸化物半導体層と電気的に接続するソース電極及びドレイン電極と、
前記酸化物半導体層上、前記ソース電極上及びドレイン電極上のゲート絶縁層と、
前記ゲート絶縁層上のゲート電極と、を有し、
前記ソース電極及び前記ドレイン電極は、それぞれ、下端部にテーパー角を有し、
前記ソース電極及び前記ドレイン電極は、それぞれ、上端部に曲面形状を有し、
前記曲面形状は、前記ソース電極又は前記ドレイン電極の厚さの1/100以上1/2以下である曲率半径を有する半導体装置の作製方法であって、
チャネル長方向に沿った断面における前記酸化物半導体層の側端部は、前記ソース電極及び前記ドレイン電極により覆われており、
前記ソース電極及び前記ドレイン電極は、前記酸化物半導体層上に導電層を成膜し、前記導電層をレジストマスクを用いたドライエッチングによって加工することで形成し、
前記ドライエッチング時に、前記レジストマスクを後退させながらエッチングを行うことで、前記ソース電極及び前記ドレイン電極の下端部に前記テーパー角を形成し、
前記ドライエッチング後に、前記ソース電極及び前記ドレイン電極に対し、アルゴンを含む雰囲気にて生成したプラズマを用いて処理を行うことで、前記ソース電極及び前記ドレイン電極の上端部に前記曲面形状を形成する半導体装置の作製方法。 - 請求項1又は請求項2において、
前記プラズマを用いた処理は、逆スパッタ処理であることを特徴とする半導体装置の作製方法。
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