JPH0546536B2 - - Google Patents
Info
- Publication number
- JPH0546536B2 JPH0546536B2 JP57053607A JP5360782A JPH0546536B2 JP H0546536 B2 JPH0546536 B2 JP H0546536B2 JP 57053607 A JP57053607 A JP 57053607A JP 5360782 A JP5360782 A JP 5360782A JP H0546536 B2 JPH0546536 B2 JP H0546536B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- layer region
- atoms
- photoconductive member
- region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 62
- 238000009826 distribution Methods 0.000 claims description 40
- 125000005843 halogen group Chemical group 0.000 claims description 32
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 32
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 9
- 239000002178 crystalline material Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 description 218
- 239000007789 gas Substances 0.000 description 90
- 239000002994 raw material Substances 0.000 description 28
- -1 silicon hydride compound Chemical class 0.000 description 22
- 125000004429 atom Chemical group 0.000 description 20
- 239000007858 starting material Substances 0.000 description 20
- 238000000151 deposition Methods 0.000 description 19
- 230000008021 deposition Effects 0.000 description 18
- 238000004544 sputter deposition Methods 0.000 description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 description 15
- 239000000126 substance Substances 0.000 description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 11
- 206010034972 Photosensitivity reaction Diseases 0.000 description 10
- 230000036211 photosensitivity Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000470 constituent Substances 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 7
- 229910052732 germanium Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000003377 silicon compounds Chemical class 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 235000012431 wafers Nutrition 0.000 description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 5
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 150000002366 halogen compounds Chemical class 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 4
- QUZPNFFHZPRKJD-UHFFFAOYSA-N germane Chemical compound [GeH4] QUZPNFFHZPRKJD-UHFFFAOYSA-N 0.000 description 4
- 229910052986 germanium hydride Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052990 silicon hydride Inorganic materials 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000007733 ion plating Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910001120 nichrome Inorganic materials 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 150000004756 silanes Chemical class 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Inorganic materials [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- MWRNXFLKMVJUFL-UHFFFAOYSA-N $l^{2}-germane Chemical class [GeH2] MWRNXFLKMVJUFL-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910015844 BCl3 Inorganic materials 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
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021617 Indium monochloride Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910020667 PBr3 Inorganic materials 0.000 description 1
- 229910020656 PBr5 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910018287 SbF 5 Inorganic materials 0.000 description 1
- 229910003691 SiBr Inorganic materials 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 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
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 1
- 229910010277 boron hydride Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 description 1
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical compound [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- AHVNUGPIPKMDBB-UHFFFAOYSA-N germanium Chemical compound [Ge].[Ge].[Ge] AHVNUGPIPKMDBB-UHFFFAOYSA-N 0.000 description 1
- VGRFVJMYCCLWPQ-UHFFFAOYSA-N germanium Chemical compound [Ge].[Ge] VGRFVJMYCCLWPQ-UHFFFAOYSA-N 0.000 description 1
- 150000002291 germanium compounds Chemical class 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- APHGZSBLRQFRCA-UHFFFAOYSA-M indium(1+);chloride Chemical compound [In]Cl APHGZSBLRQFRCA-UHFFFAOYSA-M 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 150000003017 phosphorus Chemical class 0.000 description 1
- OBCUTHMOOONNBS-UHFFFAOYSA-N phosphorus pentafluoride Chemical compound FP(F)(F)(F)F OBCUTHMOOONNBS-UHFFFAOYSA-N 0.000 description 1
- IPNPIHIZVLFAFP-UHFFFAOYSA-N phosphorus tribromide Chemical compound BrP(Br)Br IPNPIHIZVLFAFP-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005477 sputtering target Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- GBECUEIQVRDUKB-UHFFFAOYSA-M thallium monochloride Chemical compound [Tl]Cl GBECUEIQVRDUKB-UHFFFAOYSA-M 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- ZQTYRTSKQFQYPQ-UHFFFAOYSA-N trisiloxane Chemical compound [SiH3]O[SiH2]O[SiH3] ZQTYRTSKQFQYPQ-UHFFFAOYSA-N 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
- G03G5/082—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic and not being incorporated in a bonding material, e.g. vacuum deposited
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Receiving Elements (AREA)
- Photoreceptors In Electrophotography (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Description
æ¬çºæã¯ãå
ïŒããã§ã¯åºçŸ©ã®å
ã§ã玫å€å
ç·ãå¯èŠå ç·ãèµ€å€å ç·ãç·ãγç·çã瀺ãïŒ
ã®æ§ãªé»ç£æ³¢ã«æåæ§ã®ããå å°é»éšæã«é¢ã
ãã åºäœæ®åè£ çœ®ãæãã¯å圢æåéã«ãããé»å
åççšå圢æéšæãåçš¿èªåè£ çœ®ã«ãããå å°é»
å±€ã圢æããå å°é»ææãšããŠã¯ãé«æ床ã§ã
SNæ¯ãå é»æµïŒIpïŒïŒæé»æµïŒIdïŒããé«ããç §
å°ããé»ç£æ³¢ã®ã¹ãã¯ãã«ç¹æ§ã«ãããã³ã°ãã
åžåã¹ãã¯ãã«ç¹æ§ãæããããšãå å¿çæ§ãé
ããææã®ææµæå€ãæããããšã䜿çšæã«ãã
ãŠäººäœã«å¯ŸããŠç¡å ¬å®³ã§ããããšãæŽã«ã¯åºäœæ®
åè£ çœ®ã«ãããŠã¯ãæ®åãæå®æéå ã«å®¹æã«åŠ
çããããšãã§ããããšçã®ç¹æ§ãèŠæ±ãããã
æ®ã«ãäºåæ©ãšããŠãªãã€ã¹ã§äœ¿çšãããé»åå
çè£ çœ®å ã«çµèŸŒãŸããé»ååççšå圢æéšæã®å Ž
åã«ã¯ãäžèšã®äœ¿çšæã«ãããç¡å ¬å®³æ§ã¯éèŠãª
ç¹ã§ããã ãã®æ§ãªç¹ã«ç«èããŠæè¿æ³šç®ãããŠããå å°
é»ææã«ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥åŸïœâSiãè¡š
èšãïŒããããäŸãã°ãç¬åœå ¬é第2746967å·å ¬
å ±ããå第2855718å·å ¬å ±ã«ã¯é»ååççšå圢æéš
æãšããŠãç¬åœå ¬é第2933411å·å ¬å ±ã«ã¯å é»å€
æèªåè£ çœ®ãžã®å¿çšãèšèŒãããŠããã èä¹ããåŸæ¥ã®ïœâSiã§æ§æãããå å°é»å±€ã
æããå å°é»éšæã¯ãææµæå€ãå æ床ãå å¿ç
æ§çã®é»æ°çãå åŠçãå å°é»çç¹æ§ãåã³è湿
æ§çã®äœ¿çšç°å¢ç¹æ§ã®ç¹ãæŽã«ã¯çµæçå®å®æ§ã®
ç¹ã«ãããŠãç·åçãªç¹æ§åäžãèšãå¿ èŠããã
ãšããæŽã«æ¹è¯ãããå¯ãç¹ãåããã®ãå®æ ã§
ããã äŸãã°ãé»ååççšå圢æéšæã«é©çšããå Žå
ã«ãé«å æ床åãé«ææµæåãåæã«èšãããšã
ããšãåŸæ¥ã«ãããŠã¯ããã®äœ¿çšæã«ãããŠæ®ç
é»äœãæ®ãå Žåã床ã 芳枬ããããã®çš®ã®å å°é»
éšæã¯é·æéç¹°è¿ã䜿çšãç¶ãããšãç¹°è¿ã䜿çš
ã«ããç²åŽã®èç©ãèµ·ã€ãŠãæ®åãçããæè¬ãŽ
ãŒã¹ãçŸè±¡ãçºããæ§ã«ãªãæãã¯ãé«éã§ç¹°è¿
ã䜿çšãããšå¿çæ§ã次第ã«äœäžããçã®äžéœå
ãªç¹ãçããå Žåãå°ãªããªãã€ãã æŽã«ã¯ãïœâSiã¯å¯èŠå é åã®çæ³¢é·åŽã«èŒã¹
ãŠãé·æ³¢é·åŽã®æ³¢é·é åãããé·ãæ³¢é·é åã®åž
åä¿æ°ãæ¯èŒçå°ãããçŸåšå®çšåãããŠããå
å°äœã¬ãŒã¶ãšã®ãããã³ã°ã«æŒããŠãé垞䜿çšã
ããŠããããã²ã³ã©ã³ããè¢å ç¯ãå æºãšããå Ž
åãé·æ³¢é·åŽã®å ãæå ã«äœ¿çšãåŸãŠããªããšã
ãç¹ã«æŒããŠã倫ã æ¹è¯ãããäœå°ãæ®ã€ãŠã
ãã åãå¥ã«ã¯ãç §å°ãããå ãå å°é»å±€äžã«æŒã
ãŠãå ååžåãããã«ãæ¯æäœã«å°éããå ã®é
ãå€ããªããšãæ¯æäœèªäœãå å°é»å±€ãééããŠ
æ¥ãå ã«å¯Ÿããåå°çãé«ãå Žåã«ã¯ãå å°é»å±€
å ã«æŒããŠå€éåå°ã«ããå¹²æžãèµ·ã€ãŠãç»åã®
ããã±ããçããäžèŠå ãšãªãã ãã®åœ±é¿ã¯ã解å床ãäžããçºã«ãç §å°ã¹ãã
ããå°ããããçšå€§ãããªããæ®ã«å å°äœã¬ãŒã¶
ãå æºãšããå Žåã«ã¯å€§ããªåé¡ãšãªã€ãŠããã æŽã«ãïœâSiææã§å å°é»å±€ãæ§æããå Žåã«
ã¯ããã®é»æ°çãå å°é»çç¹æ§ã®æ¹è¯ãèšããã
ã«ãæ°ŽçŽ ååæãã¯åŒçŽ ååãå¡©çŽ ååçã®ãã
ã²ã³ååãåã³é»æ°äŒå°åã®å¶åŸ¡ã®ããã«ç¡ŒçŽ å
åãçååçãæãã¯ãã®ä»ã®ç¹æ§æ¹è¯ã®ããã«
ä»ã®ååããåã æ§æååãšããŠå å°é»å±€äžã«å«
æãããããããçã®æ§æååã®å«æã®ä»æ¹åŠäœ
ã«ãã€ãŠã¯ã圢æããå±€ã®é»æ°çæãã¯å å°é»ç
ç¹æ§ã«åé¡ãçããå Žåãããã å³ã¡ãäŸãã°ã圢æããå å°é»å±€äžã«å ç §å°ã«
ãã€ãŠçºçããããªããã€ãªã¢ã®è©²å±€äžã§ã®å¯¿åœ
ãå åã§ãªãããšãæãã¯æéšã«ãããŠãæ¯æäœ
åŽããã®é»è·ã®æ³šå ¥ã®é»æ¢ãå åã§ãªãããšçã
çããå Žåãå°ãªããªãã æŽã«ã¯ãå±€åãåæ°ÎŒä»¥äžã«ãªããšå±€åœ¢æçšã®
ç空å ç©å®€ããåãåºããåŸã空æ°äžã§ã®æŸçœ®æ
éã®çµéãšå ±ã«ãæ¯æäœè¡šé¢ããã®å±€ã®æµ®ããå¥
é¢ãæãã¯å±€ã«äºè£ãçããçã®çŸè±¡ãåŒèµ·ãå
ã¡ã§ãã€ãããã®çŸè±¡ã¯ãæ®ã«æ¯æäœãéåžžãé»
ååçåã®éã«æŒããŠäœ¿çšãããŠãããã©ã ç¶æ¯
æäœã®å Žåã«å€ãèµ·ãçãçµæçå®å®æ§ã®ç¹ã«æŒ
ããŠè§£æ±ºãããå¯ãç¹ãããã åŸã€ãŠïœâSiææãã®ãã®ã®ç¹æ§æ¹è¯ãèšãã
ãäžæ¹ã§å å°é»éšæãèšèšããéã«ãäžèšããæ§
ãªåé¡ã®ç·ãŠã解決ãããæ§ã«å·¥å€«ãããå¿ èŠã
ããã æ¬çºæã¯äžèšã®è«žç¹ã«éã¿æããããã®ã§ãïœ
âSiã«å°±ãŠé»ååççšå圢æéšæãåºäœæ®åè£
眮ãèªåè£ çœ®çã«äœ¿çšãããå å°é»éšæãšããŠã®
é©çšæ§ãšãã®å¿çšæ§ãšãã芳ç¹ããç·æ¬çã«éæ
ç 究æ€èšãç¶ããçµæãã·ãªã³ã³ååãæ¯äœãš
ããæ°ŽçŽ ååïŒïŒšïŒåã¯ããã²ã³åå(X)ã®ããã
ãäžæ¹ãå°ãªããšãå«æããã¢ã¢ã«ãã¢ã¹ææã
æè¬æ°ŽçŽ åã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ãããã²ã³åã¢
ã¢ã«ãã¢ã¹ã·ãªã³ã³ãæãã¯ããã²ã³å«ææ°ŽçŽ å
ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ã以åŸããçã®ç·ç§°çè¡šèš
ãšããŠãïœâSiïŒïŒšïŒïŒžïŒãã䜿çšãããããæ§æ
ãããå å°é»æ§ã瀺ãéæ¶è³ªå±€ãæããå å°é»éš
æã®æ§æã以åŸã«èª¬æãããæ§ãªç¹å®åã®äžã«èš
èšãããŠäœæãããå å°é»éšæã¯å®çšäžèããåª
ããç¹æ§ã瀺ãã°ããã§ãªããåŸæ¥ã®å å°é»éšæ
ãšèŒã¹ãŠã¿ãŠãããããç¹ã«ãããŠåé§ããŠãã
ããšãæ®ã«é»ååççšã®å å°é»éšæãšããŠèãã
åªããç¹æ§ãæããŠããããšåã³é·æ³¢é·åŽã«æŒã
ãåžåã¹ãã¯ãã«ç¹æ§ã«åªããŠããããšãèŠåºã
ãç¹ã«åºããŠããã æ¬çºæã¯é»æ°çãå åŠçãå å°é»çç¹æ§ãåžžæ
å®å®ããŠããŠãæ®ãã©äœ¿çšç°å¢ã«å¶éãåããªã
å šç°å¢åã§ãããé·æ³¢é·åŽã®å æ床ç¹æ§ã«åªãã
ãšå ±ã«èå ç²åŽã«èããé·ããç¹°è¿ã䜿çšã«éã
ãŠãå£åçŸè±¡ãèµ·ãããæ®çé»äœãå šãåã¯æ®ã
ã©èŠ³æž¬ãããªãå å°é»éšæãæäŸããããšãäž»ã
ãç®çãšããã æ¬çºæã®å¥ã®ç®çã¯ãå šå¯èŠå åã«æŒããŠå æ
床ãé«ããæ®ã«å å°äœã¬ãŒã¶ãšã®ãããã³ã°ã«åª
ããäžã€å å¿çã®éãå å°é»éšæãæäŸããããš
ã§ããã æ¬çºæã®ä»ã®ç®çã¯ãæ¯æäœäžã«èšèšãããã
å±€ãšæ¯æäœãšã®éãç©å±€ãããå±€ã®åå±€éã«æŒã
ãå¯çæ§ã«åªããæ§é é åçã«ç·»å¯ã§å®å®çã§ã
ããå±€å質ã®é«ãå å°é»éšæãæäŸããããšã§ã
ãã æ¬çºæã®ä»ã®ç®çã¯ãé»ååççšã®å圢æéšæ
ãšããŠé©çšãããå Žåããéåžžã®é»ååçæ³ã極
ããŠæå¹ã«é©çšããåŸãçšåºŠã«ãéé»å圢æã®çº
ã®åž¯é»åŠçã®éã®é»è·ä¿æèœãå åãããäžã€å€
湿é°å²æ°äžã§ããã®ç¹æ§ã®äœäžãæ®ãã©èŠ³æž¬ãã
ãªãåªããé»ååçç¹æ§ãæããå å°é»éšæãæ
äŸããããšã§ããã æ¬çºæã®æŽã«ä»ã®ç®çã¯ãæ¿åºŠãé«ããããŒã
ããŒã³ãé®®æã«åºãŠäžã€è§£å床ã®é«ããé«å質ç»
åãåŸãäºã容æã«åºæ¥ãé»ååççšã®å å°é»éš
æãæäŸããããšã§ããã æ¬çºæã®æŽã«ããïŒã€ã®ç®çã¯ãé«å æ床æ§ã
é«SNæ¯ç¹æ§åã³æ¯æäœãšã®éã«è¯å¥œãªé»æ°çæ¥
觊æ§ãæããå å°é»éšæãæäŸããããšã§ãã
ãã æ¬çºæã®å å°é»éšæã¯ãå å°é»éšæçšã®æ¯æäœ
ãšã該æ¯æäœäžã«ãã·ãªã³ã³ååãšã²ã«ãããŠã
ååãšãå«ãéæ¶è³ªææã§æ§æãããã第ïŒã®å±€
é åãšã·ãªã³ã³ååãå«ãéæ¶è³ªææã§æ§æã
ããå å°é»æ§ã瀺ã第ïŒã®å±€é åãšãåèšæ¯æäœ
åŽããé ã«èšããããå±€æ§æã®éæ¶è³ªå±€ãšãæ
ããåèšéæ¶è³ªå±€äžã«ã¯é žçŽ ååãåèšç¬¬ïŒã®å±€
é ååŽã«å±€åæ¹åã«é£ç¶çã«æžå°ããååžç¶æ ã§
å«æãããŠããããšãç¹åŸŽãšããã äžèšããæ§ãªå±€æ§æãåãæ§ã«ããŠèšèšããã
æ¬çºæã®å å°é»éšæã¯ãåèšããè«žåé¡ã®ç·ãŠã
解決ãåŸã極ããŠåªããé»æ°çãå åŠçãå å°é»
çç¹æ§ãèå§æ§åã³äœ¿çšç°å¢ç¹æ§ã瀺ãã æ®ã«ãé»ååççšå圢æéšæãšããŠé©çšããã
å Žåã«ã¯ãç»å圢æãžã®æ®çé»äœåœ±ã®é¿ãå šããª
ãããã®é»æ°çç¹æ§ãå®å®ããŠããé«æ床ã§ãé«
SNæ¯ãæãããã®ã§ãã€ãŠãèå ç²åŽãç¹°è¿ã
䜿çšç¹æ§ã«é·ããæ¿åºŠãé«ããããŒãããŒã³ãé®®
æã«åºãŠãäžã€è§£å床ã®é«ããé«å質ã®ç»åãå®
å®ããŠç¹°è¿ãåŸãããšãã§ããã åãæ¬çºæã®å å°é»éšæã¯æ¯æäœäžã«åœ¢æãã
ãéæ¶è³ªå±€ããå±€èªäœã匷éã§ãã€ãŠãäžã€æ¯æ
äœãšã®å¯çæ§ã«èããåªããŠãããé«éã§é·æé
é£ç¶çã«ç¹°è¿ã䜿çšããããšãã§ããã æŽã«ãæ¬çºæã®å å°é»éšæã¯ãå šå¯èŠå åã«æŒ
ããŠå æ床ãé«ããæ®ã«åå°äœã¬ãŒã¶ãšã®ããã
ã³ã°ã«åªããäžã€å å¿çãéãã 以äžãå³é¢ã«åŸã€ãŠãæ¬çºæã®å å°é»éšæã«å°±
ãŠè©³çŽ°ã«èª¬æããã 第ïŒå³ã¯ãæ¬çºæã®ç¬¬ïŒã®å®æœæ æ§äŸã®å å°é»
éšæã®å±€æ§æã説æããããã«æš¡åŒçã«ç€ºããæš¡
åŒçæ§æå³ã§ããã 第ïŒå³ã«ç€ºãå å°é»éšæïŒïŒïŒã¯ãå å°é»éšæ
çšãšããŠã®æ¯æäœïŒïŒïŒã®äžã«ãéæ¶è³ªå±€ïŒïŒïŒ
ãæãã該éæ¶è³ªå±€ïŒïŒïŒã¯èªç±è¡šé¢ïŒïŒïŒãäž
æ¹ã®ç«¯é¢ã«æããŠããã éæ¶è³ªå±€ïŒïŒïŒã¯ãæ¯æäœïŒïŒïŒåŽããã²ã«ã
ããŠã ååãå«æããïœâSiïŒïŒšïŒïŒžïŒïŒä»¥åŸãïœ
âSiGeïŒïŒšïŒïŒžïŒããšç¥èšããïŒã§æ§æããã第
ïŒã®å±€é å(G)ïŒïŒïŒãšïœâSiïŒïŒšïŒïŒžïŒã§æ§æã
ããå å°é»æ§ãæãã第ïŒã®å±€é å(S)ïŒïŒïŒãšã
é ã«ç©å±€ãããå±€æ§é ãæããã 第ïŒã®å±€é å(G)ïŒïŒïŒäžã«å«æãããã²ã«ãã
ãŠã ååã¯ã該第ïŒã®å±€é å(G)ïŒïŒïŒã®å±€åæ¹å
åã³æ¯æäœïŒïŒïŒã®è¡šé¢ãšå¹³è¡ãªé¢å æ¹åã«é£ç¶
çã§ãã€ãŠäžã€åäžã«ååžããç¶æ ãšãªãæ§ã«å
èšç¬¬ïŒã®å±€é å(G)ïŒïŒïŒäžã«å«æãããã æ¬çºæã«æŒããŠã¯ã第äžã®å±€é å(G)äžã«èšãã
ãã第ïŒã®å±€é å(G)äžã«ã¯ãã²ã«ãããŠã ååã¯
å«æãããŠãããããã®æ§ãªå±€æ§é ã«éæ¶è³ªå±€ã
圢æããããšã«ãã€ãŠå¯èŠå é åãå«ããæ¯èŒç
çæ³¢é·ããæ¯èŒçé·æ³¢é·è¿ã®å šé åã®æ³¢é·ã®å ã«
察ããŠå æ床ãåªããŠããå å°é»éšæãšãåŸãã
ã®ã§ããã åã第ïŒã®å±€é åäžã«æŒããã²ã«ãããŠã åå
ã®ååžç¶æ ã¯ãå šå±€é åã«ã²ã«ãããŠã ååãé£
ç¶çã«ååžããŠããã®ã§ç¬¬ïŒã®å±€é å(G)ãšç¬¬ïŒã®
å±€é å(S)ãšã®éã«æŒãã芪åæ§ã«åªããåå°äœã¬
ãŒã¶çã䜿çšããå Žåã®ã第ïŒã®å±€é å(S)ã§ã¯æ®
ãã©åžåãåããªãé·æ³¢é·åŽã®å ã第ïŒã®å±€é å
(G)ã«æŒããŠãå®è³ªçã«å®å šã«åžåããããšãåº
æ¥ãæ¯æäœé¢ããã®åå°ã«ããå¹²æžãé²æ¢ããã
ãšãåºæ¥ãã åãæ¬çºæã®å å°é»éšæã«æŒããŠã¯ã第ïŒã®å±€
é åãš(G)第ïŒã®å±€é å(S)ãšãæ§æããéæ¶è³ªææ
ã®å€«ã ãã·ãªã³ã³ååãšããå ±éã®æ§æèŠçŽ ãæ
ããŠããã®ã§ãç©å±€çé¢ã«æŒããŠååŠçãªå®å®æ§
ã®ç¢ºä¿ãå åæãããŠããã æ¬çºæã«ãããŠã第ïŒã®å±€é å(G)äžã«å«æãã
ãã²ã«ãããŠã ååã®å«æéãšããŠã¯ãæ¬çºæã®
ç®çãå¹æçã«éæãããæ§ã«ææã«åŸã€ãŠé©å®
決ããããããéåžžã¯ïŒã9.5Ã105atomic ppmã
奜ãŸããã¯100ãïŒÃ105atomic ppmãæé©ã«
ã¯ã500ãïŒÃ105atomic ppmãšãããã®ãæãŸ
ãããã®ã§ããã æ¬çºæã«æŒããŠç¬¬ïŒã®å±€é å(G)ãšç¬¬ïŒã®å±€é å
(S)ãšã®å±€åã¯ãæ¬çºæã®ç®çãå¹æçã«éæãã
ãçºã®éèŠãªå åã®ïŒã€ã§ããã®ã§åœ¢æãããå
å°é»éšæã«ææã®ç¹æ§ãå åäžããããæ§ã«ãå
å°é»éšæã®èšèšã®éã«å åãªã泚æãæãããå¿
èŠãããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(G)ã®å±€åTBã¯ã
éåžžã®å Žåã30â«ã50ÎŒã奜ãŸããã¯ã40â«ã
40ÎŒãæé©ã«ã¯ã50â«ã30ÎŒãšãããã®ãæãŸã
ãã åã第ïŒã®å±€é å(S)ã®å±€åã¯ãéåžžã®å Žåã
0.5ã90ÎŒã奜ãŸããã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒ
ãšãããã®ãæãŸããã 第ïŒã®å±€é å(G)ã®å±€åTBãšç¬¬ïŒã®å±€é å(S)ã®
å±€åã®åïŒTBïŒïŒŽïŒãšããŠã¯ãäž¡å±€é åã«èŠ
æ±ãããç¹æ§ãšéæ¶è³ªå±€å šäœã«èŠæ±ãããç¹æ§ãš
ã®çžäºéã®ææ©çé¢é£æ§ã«åºããŠãå å°é»éšæã®
å±€èšèšã®éã«ææã«åŸã€ãŠãé©å®æ±ºå®ãããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãäžèšã®ïŒTB
ïŒïŒŽïŒã®æ°å€ç¯å²ãšããŠã¯éåžžã®å ŽåïŒã100ÎŒã
奜é©ã«ã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒãšãããã®
ãæãŸããã æ¬çºæã®ãã奜ãŸããå®æœæ æ§äŸã«æŒããŠã¯ã
äžèšã®å±€åTBåã³å±€åãšããŠã¯ãéåžžã¯TBïŒ
âŠïŒãªãé¢ä¿ãæºè¶³ããéã«ã倫ã ã«å¯ŸããŠé©
å®é©åãªæ°å€ãéžæãããã®ãæãŸããã äžèšã®å Žåã«æŒããå±€åTBåã³å±€åã®æ°å€
ã®éžæã«æŒããŠããã奜ãŸããã¯ãTBïŒïŒŽâŠ0.91
æé©ã«ã¯TBïŒïŒŽâŠ0.8ãªãé¢ä¿ãæºè¶³ãããæ§ã«
å±€åTBåã³å±€åã®å€ã決å®ãããã®ãæãŸã
ããã®ã§ããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(G)äžã«å«æãã
ãã²ã«ãããŠã ååã®å«æéãïŒÃ105atomic
ppm以äžã®å Žåã«ã¯ã第ïŒã®å±€é å(G)ã®å±€åTB
ãšããŠã¯ãæå¯ãèããããã®ãæãŸãã奜ãŸã
ãã¯30Ό以äžããã奜ãŸããã¯25Ό以äžãæé©ã«
ã¯20Ό以äžãšãããã®ãæãŸãããã®ã§ããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãé«å æ床åãš
é«ææµæåãæŽã«ã¯æ¯æäœãšéæ¶è³ªå±€ãšã®éã®å¯
çæ§ã®æ¹è¯ãèšãç®çã®çºã«éæ¶è³ªå±€äžã«ã¯ãé ž
çŽ ååãå«æããããéæ¶è³ªå±€äžã«å«æãããé ž
çŽ ååã¯ãéæ¶è³ªå±€ã®å šå±€é åã«äžåãªãå«æã
ããŠãè¯ãããæãã¯ãéæ¶è³ªå±€ã®äžéšã®å±€é å
ã®ã¿ã«å«æãããŠååšãããŠãè¯ãã åãé žçŽ ååã®ååžç¶æ ã¯ååžæ¿åºŠïŒ£(O)ãéæ¶
質局ã®å±€åæ¹åã«æŒããŠã¯ãåäžã§ãã€ãŠããå
åžæ¿åºŠïŒ£(O)ãå±€åæ¹åã«ã¯äžåäžã§ãã€ãŠãè¯
ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«èšããããé žçŽ å
åã®å«æãããŠããå±€é å(O)ã¯ãå æ床ãšææµæ
ã®åäžãäž»ããç®çãšããå Žåã«ã¯ãéæ¶è³ªå±€ã®
å šå±€é å(O)ãå ããæ§ã«èšããããæ¯æäœãšéæ¶
質局ãšã®éã®å¯çæ§ã®åŒ·åãèšãã®ãäž»ããç®ç
ãšããå Žåã«ã¯ãéæ¶è³ªå±€ã®æ¯æäœåŽç«¯éšå±€é å
ãå ããæ§ã«èšããããã åè ã®å Žåãå±€é å(O)äžã«å«æãããé žçŽ åå
ã®å«æéã¯ãé«å æ床ãç¶æããçºã«æ¯èŒçå°ãª
ããããåŸè ã®å Žåã«ã¯ãæ¯æäœãšã®å¯çæ§ã®åŒ·
åã確å®ã«èšãçºã«æ¯èŒçå€ããããã®ãæãŸã
ãã åãåè ãšåŸè ã®äž¡æ¹ãåæã«éæããç®çã®
çºã«ã¯ãæ¯æäœåŽã«æŒããŠæ¯èŒçé«æ¿åºŠã«ååžã
ããéæ¶è³ªå±€ã®èªç±è¡šé¢åŽã«æŒããŠæ¯èŒçäœæ¿åºŠ
ã«ååžããããæãã¯ãéæ¶è³ªå±€ã®èªç±è¡šé¢åŽã®
è¡šå±€é åã«ã¯ãé žçŽ ååãç©æ¥µçã«ã¯å«æãããª
ãæ§ãªé žçŽ ååã®ååžç¶æ ãå±€é å(O)äžã«åœ¢æã
ãã°è¯ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«èšããããå±€é å
(O)ã«å«æãããé žçŽ ååã®å«æéã¯ãå±€é å(O)èª
äœã«èŠæ±ãããç¹æ§ãæãã¯è©²å±€é å(O)ãæ¯æäœ
ã«çŽã«æ¥è§ŠããŠèšããããå Žåã«ã¯ã該æ¯æäœãš
ã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿çãææ©çé¢é£
æ§ã«æŒããŠãé©å®éžæããããšãåºæ¥ãã åãåèšå±€é å(O)ã«çŽã«æ¥è§ŠããŠä»ã®å±€é åã
èšããããå Žåã«ã¯ã該ä»ã®å±€é åã®ç¹æ§ãã該
ä»ã®å±€é åãšã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿ã
èæ ®ãããŠãé žçŽ ååã®å«æéãé©å®éžæãã
ããå±€é å(O)äžã«å«æãããé žçŽ ååã®éã¯ã圢
æãããå å°é»éšæã«èŠæ±ãããç¹æ§ã«å¿ããŠæ
æã«åŸã€ãŠé©å®æ±ºããããããéåžžã®å Žåã
0.001ã50atomicïŒ ã奜ãŸããã¯ã0.002ã
40atomicïŒ ãæé©ã«ã¯0.003ã30atomicïŒ ãšãã
ãã®ãæãŸãããã®ã§ããã æ¬çºæã«æŒããŠãå±€é å(O)ãéæ¶è³ªå±€ã®å šåã
å ããããæãã¯ãéæ¶è³ªå±€ã®å šåãå ããªããš
ããå±€é å(O)ã®å±€åTOã®éæ¶è³ªå±€ã®å±€åã«å
ããå²åãå åå€ãå Žåã«ã¯ãå±€é å(O)ã«å«æã
ããé žçŽ ååã®å«æéã®äžéã¯ãåèšã®å€ããå
åå°ãªããããã®ãæãŸããã æ¬çºæã®å Žåã«ã¯ãå±€é å(O)ã®å±€åTOãéæ¶
質局ã®å±€åã«å¯ŸããŠå ããå²åãïŒåã®ïŒä»¥äž
ãšãªãæ§ãªå Žåã«ã¯ãå±€é å(O)äžã«å«æãããé ž
çŽ ååã®éã®äžéãšããŠã¯ãéåžžã¯ã30atomic
ïŒ ä»¥äžã奜ãŸããã¯ã20atomic以äžãæé©ã«ã¯
10atomicïŒ ä»¥äžãšãããã®ãæãŸãããã®ã§ã
ãã 第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ã¯ãæ¬çºæã«ãããå å°
é»éšæã®å±€é å(O)äžã«å«æãããé žçŽ ååã®å±€å
æ¹åã®ååžç¶æ ã®å žåçäŸã瀺ãããã 第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ãããŠã暪軞ã¯é žçŽ åå
ã®ååžæ¿åºŠïŒ£ãã瞊軞ã¯ãå±€é å(O)ã®å±€åã瀺
ããtBã¯æ¯æäœåŽã®å±€é å(O)ã®ç«¯é¢ã®äœçœ®ããtT
ã¯æ¯æäœåŽãšã¯å察åŽã®å±€é å(O)ã®ç«¯é¢ã®äœçœ®ã
瀺ããå³ã¡ãé žçŽ ååã®å«æãããå±€é å(O)ã¯tB
åŽããtTåŽã«åã€ãŠå±€åœ¢æããªãããã 第ïŒå³ã«ã¯ãå±€é å(O)äžã«å«æãããé žçŽ åå
ã®å±€åæ¹åã®ååžç¶æ ã®ç¬¬ïŒã®å žåäŸã瀺ãã
ãã 第ïŒå³ã«ç€ºãããäŸã§ã¯ãé žçŽ ååã®å«æãã
ãå±€é å(O)ã圢æãããè¡šé¢ãšè©²å±€é ååã³åèš
第ïŒã®å±€é å(O)ã®è¡šé¢ãšãæ¥ããçé¢äœçœ®tBãã
t1ã®äœçœ®ãŸã§ã¯ãé žçŽ ååã®ååžæ¿åºŠïŒ£ãC1ãªã
äžå®ã®å€ãåãä¹ãé žçŽ ååã圢æãããå±€é å
åã³åèšç¬¬ïŒã®å±€é å(O)ã«å«æãããäœçœ®t1ãã
ã¯æ¿åºŠC2ããçé¢äœçœ®tTã«è³ããŸã§åŸã ã«é£ç¶ç
ã«æžå°ãããŠãããçé¢äœçœ®tTã«ãããŠã¯é žçŽ å
åã®ååžæ¿åºŠïŒ£ã¯C3ãšãããã 第ïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãå«æãããé ž
çŽ ååã®ååžæ¿åºŠïŒ£ã¯äœçœ®tBããäœçœ®tTã«å°ããŸ
ã§æ¿åºŠC4ããåŸã ã«é£ç¶çã«æžå°ããŠäœçœ®tTã«ã
ããŠæ¿åºŠC5ãšãªãæ§ãªååžç¶æ ã圢æããŠããã 第ïŒå³ã®å Žåã«ã¯ãäœçœ®tBããäœçœ®t2ãŸã§ã¯é ž
çŽ ååã®ååžæ¿åºŠïŒ£ã¯æ¿åºŠC6ãšäžå®å€ãšããã
äœçœ®t2ãšäœçœ®tTãšã®éã«ãããŠãåŸã ã«é£ç¶çã«
æžå°ãããäœçœ®tTã«ãããŠãååžæ¿åºŠïŒ£ã¯å®è³ªç
ã«é¶ãšãããŠããïŒããã§å®è³ªçã«é¶ãšã¯æ€åºé
çéæªæºã®å Žåã§ããïŒã 第ïŒå³ã®å Žåã«ã¯ãé žçŽ ååã®ååžæ¿åºŠïŒ£ã¯äœ
眮tBããäœçœ®tTã«å°ããŸã§ãæ¿åºŠC8ããé£ç¶çã«
åŸã ã«æžå°ãããäœçœ®tTã«ãããŠå®è³ªçã«é¶ãšã
ããŠããã 第ïŒå³ã«ç€ºãäŸã«ãããŠã¯ãé žçŽ ååã®ååžæ¿
床ã¯ãäœçœ®tBãšäœçœ®t3ééã«ãããŠã¯ãæ¿åºŠC9
ãšäžå®å€ã§ãããäœçœ®tTã«ãããŠã¯æ¿åºŠC10ãšã
ãããäœçœ®t3ãšäœçœ®tTãšã®éã§ã¯ãååžæ¿åºŠïŒ£ã¯
äžæ¬¡é¢æ°çã«äœçœ®t3ããäœçœ®tTã«è³ããŸã§æžå°ã
ããŠããã 第ïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãååžæ¿åºŠïŒ£ã¯
äœçœ®tBããäœçœ®t4ãŸã§ã¯æ¿åºŠC11ã®äžå®å€ãåãã
äœçœ®t4ããäœçœ®tTãŸã§ã¯æ¿åºŠC12ããæ¿åºŠC13ãŸã§
äžæ¬¡é¢æ°çã«æžå°ããååžç¶æ ãšãããŠããã 第ïŒå³ã«ç€ºãäŸã«ãããŠã¯ãäœçœ®tBããäœçœ®tT
ã«è³ããŸã§ãé žçŽ ååã®ååžæ¿åºŠïŒ£ã¯æ¿åºŠC14ã
ãå®è³ªçã«é¶ã«è³ãæ§ã«äžæ¬¡é¢æ°çã«æžå°ããŠã
ãã 第ïŒå³ã«ãããŠã¯ãäœçœ®tBããäœçœ®t5ã«è³ããŸ
ã§ã¯é žçŽ ååã®ååžæ¿åºŠïŒ£ã¯ãæ¿åºŠC15ããæ¿åºŠ
C10ãŸã§äžæ¬¡é¢æ°çã«æžå°ãããäœçœ®t5ãšäœçœ®tTãš
ã®éã«ãããŠã¯ãæ¿åºŠC16ã®äžå®å€ãšãããäŸã
瀺ãããŠããã 第ïŒïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãé žçŽ ååã®
ååžæ¿åºŠïŒ£ã¯äœçœ®tBã«ãããŠæ¿åºŠC17ã§ãããäœ
眮t6ã«è³ããŸã§ã¯ãã®æ¿åºŠC17ããåãã¯ãã€ã
ããšæžå°ãããt6ã®äœçœ®ä»è¿ã«ãããŠã¯ãæ¥æ¿ã«
æžå°ãããŠäœçœ®t6ã§ã¯æ¿åºŠC13ãšãããã äœçœ®t6ãšäœçœ®t7ãšã®éã«ãããŠã¯ãåãæ¥æ¿ã«
æžå°ãããŠããã®åŸã¯ãç·©ãã«åŸã ã«æžå°ãããŠ
äœçœ®t7ã§æ¿åºŠC19ãšãªããäœçœ®t7ãšäœçœ®t8ãšã®éã§
ã¯ã極ããŠãã€ãããšåŸã ã«æžå°ãããŠäœçœ®t8ã«
ãããŠãæ¿åºŠC20ã«è³ããäœçœ®t8ãšäœçœ®tTã®éã«ã
ããŠã¯ãæ¿åºŠC20ããå®è³ªçã«é¶ã«ãªãæ§ã«å³ã«
瀺ã圢ç¶ã®æ²ç·ã«åŸã€ãŠæžå°ãããŠããã 以äžã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ãããå±€é å(O)äž
ã«å«æãããé žçŽ ååã®å±€åæ¹åã®ååžç¶æ ã®å ž
åäŸã®å¹Ÿã€ãã説æããæ§ã«ãæ¬çºæã«ãããŠ
ã¯ãæ¯æäœåŽã«ãããŠãé žçŽ ååã®ååžæ¿åºŠïŒ£ã®
é«ãéšåãæããçé¢tTåŽã«ãããŠã¯ãåèšååž
æ¿åºŠïŒ£ã¯æ¯æäœåŽã«èŒã¹ãŠå¯æãäœããããéšå
ãæããé žçŽ ååã®ååžç¶æ ãå±€é å(O)ã«èšãã
ããŠããã æ¬çºæã«ãããŠãéæ¶è³ªå±€ãæ§æããé žçŽ åå
ã®å«æãããå±€é å(O)ã¯ãäžèšããæ§ã«æ¯æäœåŽ
ã®æ¹ã«é žçŽ ååãæ¯èŒçé«æ¿åºŠã§å«æãããŠãã
å±åšé å(B)ãæãããã®ãšããŠèšããããã®ãæ
ãŸããããã®å Žåã«ã¯ãæ¯æäœãšéæ¶è³ªå±€ãšã®é
ã®å¯çæ§ãããäžå±€åäžãããããšãåºæ¥ãã äžèšå±åšé å(B)ã¯ã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ç€ºã
èšå·ãçšããŠèª¬æããã°ãçé¢äœçœ®tBãã5Ό以å
ã«èšããããã®ãæãŸããã æ¬çºæã«ãããŠã¯ãäžèšå±åšé å(B)ã¯ãçé¢äœ
眮tBãã5ÎŒåãŸã§ã®å šå±€é åïŒLTïŒãšãããå Žå
ãããããåãå±€é åïŒLTïŒã®äžéšãšãããå Ž
åãããã å±åšé åãå±€é åïŒLTïŒã®äžéšãšãããåã¯
å šéšãšãããã¯ã圢æãããéæ¶è³ªå±€ã«èŠæ±ãã
ãç¹æ§ã«åŸã€ãŠé©å®æ±ºããããã å±åšé å(B)ã¯ãã®äžã«å«æãããé žçŽ ååã®å±€
åæ¹åã®ååžç¶æ ãšããŠé žçŽ ååã®ååžæ¿åºŠã®æ
倧å€Cmaxãéåžžã¯500atomic ppm以äžã奜é©ã«
ã¯800atomic ppm以äžãæé©ã«ã¯1000atomic
ppm以äžãšãããæ§ãªååžç¶æ ãšãªãåŸãæ§ã«å±€
圢æãããã®ãæãŸããã å³ã¡ãæ¬çºæã«ãããŠã¯ãé žçŽ ååã®å«æãã
ãå±€é å(O)ã¯ãæ¯æäœåŽããã®å±€åã§5Ό以å ïŒtB
ãã5ÎŒåã®å±€é åïŒã«ååžæ¿åºŠã®æ倧å€Cmaxã
ååšããæ§ã«åœ¢æãããã®ãæãŸããã æ¬çºæã«ãããŠãå¿ èŠã«å¿ããŠéæ¶è³ªå±€ãæ§æ
ãã第ïŒã®å±€é å(G)åã³ç¬¬ïŒã®å±€é å(S)äžã«å«æ
ãããããã²ã³ååãšããŠã¯ãå ·äœçã«ã¯ãã
çŽ ãå¡©çŽ ãèçŽ ããšãŠçŽ ãæããããæ®ã«ãã
çŽ ãå¡©çŽ ã奜é©ãªãã®ãšããŠæããããšãåºæ¥
ãã æ¬çºæã«ãããŠãïœâSiGeïŒïŒšïŒïŒžïŒã§æ§æã
ãã第ïŒã®å±€é å(G)ã圢æããã«ã¯äŸãã°ã°ããŒ
æŸé»æ³ãã¹ããã¿ãªã³ã°æ³ãæãã¯ã€ãªã³ãã¬ãŒ
ãã€ã³ã°æ³çã®æŸé»çŸè±¡ãå©çšããç空å ç©æ³ã«
ãã€ãŠæããããäŸãã°ãã°ããŒæŸé»æ³ã«ãã€
ãŠãïœâSiGeïŒïŒšïŒïŒžïŒã§æ§æããã第ïŒã®å±€é
å(G)ã圢æããã«ã¯ãåºæ¬çã«ã¯ã·ãªã³ã³åå
ïŒSiïŒãäŸçµŠãåŸãSiäŸçµŠçšã®åæã¬ã¹ãšã²ã«ã
ããŠã ååïŒGeïŒãäŸçµŠãåŸãGeäŸçµŠçšã®åæ
ã¬ã¹ãšãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)å°å ¥çšã®åæã¬
ã¹åã¯ïŒåã³ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹
ããå éšãæžå§ã«ãåŸãå ç©å®€å ã«ææã®ã¬ã¹å§
ç¶æ ã§å°å ¥ããŠã該å ç©å®€å ã«ã°ããŒæŸé»ãçèµ·
ãããäºãæå®äœçœ®ã«èšçœ®ãããŠããæå®ã®æ¯æ
äœè¡šé¢äžã«å«æãããã²ã«ãããŠã ååã®ååžæ¿
床ãææã®å€åçæ²ç·ã«åŸã€ãŠå¶åŸ¡ãä¹ãïœâ
SiGeïŒïŒšïŒïŒžïŒãããªãå±€ã圢æãããã°è¯ãã
åãã¹ããã¿ãªã³ã°æ³ã§åœ¢æããå Žåã«ã¯ãäŸã
ã°ArãHeçã®äžæŽ»æ§ã¬ã¹åã¯ããçã®ã¬ã¹ãã
ãŒã¹ãšããæ··åã¬ã¹ã®é°å²æ°äžã§Siã§æ§æããã
ã¿ãŒã²ãããæãã¯è©²ã¿ãŒã²ãããšGeã§æ§æã
ããã¿ãŒã²ããã®äºæã䜿çšããŠåã¯ãSiãšGe
ã®æ··åãããã¿ãŒã²ããã䜿çšããå¿ èŠã«å¿ããŠ
HeãArçã®çšéã¬ã¹ã§çšéãããGeäŸçµŠçšã®å
æã¬ã¹ãå¿ èŠã«å¿ããŠãæ°ŽçŽ åå(H)åã¯ïŒåã³ã
ãã²ã³åå(X)å°å ¥çšã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®
å ç©å®€ã«å°å ¥ããææã®ã¬ã¹ã®ãã©ãºãé°å²æ°ã
圢æãããšå ±ã«ãåèšGeäŸçµŠçšã®åæã¬ã¹ã®ã¬
ã¹æµéãææã®å€åçæ²ç·ã«åŸã€ãŠå¶åŸ¡ãä¹ãå
èšã¿ãŒã²ãããã¹ããã¿ãªã³ã°ããŠããã°è¯ãã ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®å Žåã«ã¯ãäŸãã°å€
çµæ¶ã·ãªã³ã³åã¯åçµæ¶ã·ãªã³ã³ãšå€çµæ¶ã²ã«ã
ããŠã åã¯åçµæ¶ã²ã«ãããŠã ãšãã倫ã èžçºæº
ãšããŠèžçããŒãã«å容ãããã®èžçºæºãæµæå
ç±æ³ãæãã¯ããšã¬ã¯ããã³ããŒã æ³ïŒEBæ³ïŒ
çã«ãã€ãŠå ç±èžçºãããé£ç¿èžçºç©ãææã®ã¬
ã¹ãã©ãºãé°å²æ°äžãééããã以å€ã¯ãã¹ãã
ã¿ãªã³ã°æ³ã®å Žåãšåæ§ã«ããäºã§è¡ãããšãåº
æ¥ãã æ¬çºæã«ãããŠäœ¿çšãããSiäŸçµŠçšã®åæã¬ã¹
ãšæãåŸãç©è³ªãšããŠã¯ãSiH4ãSi2H6ãSi3H8ã
Si4H10çã®ã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸãæ°ŽçŽ åç¡
çŽ ïŒã·ã©ã³é¡ïŒãæå¹ã«äœ¿çšããããã®ãšããŠæ
ããããæ®ã«ãå±€äœæäœæ¥æã®åæ±ãæããSiäŸ
絊å¹çã®è¯ãçã®ç¹ã§SiH4ãSi2H6ã奜ãŸããã
ã®ãšããŠæããããã GeäŸçµŠçšã®åæã¬ã¹ãšæãåŸãç©è³ªãšããŠã¯
GeH4ãGe2H6ãGe3H8ãGe4H10ãGe5H12ã
Ge6H14ãGe7H10ãGe8H18ãGe9H20çã®ã¬ã¹ç¶
æ ã®åã¯ã¬ã¹åãåŸãæ°ŽçŽ åã²ã«ãããŠã ãæå¹
ã«äœ¿çšããããã®ãšããŠæããããæ®ã«ãå±€äœæ
äœæ¥æã®åæ±ãæããGeäŸçµŠå¹çã®è¯ãçã®ç¹
ã§ãGeH4ãGe2H6ãGe3H8ã奜ãŸãããã®ãšã
ãŠæããããã æ¬çºæã«ãããŠäœ¿çšãããããã²ã³ååå°å ¥çš
ã®åæã¬ã¹ãšããŠæå¹ãªã®ã¯ãå€ãã®ããã²ã³å
åç©ãæããããäŸãã°ããã²ã³ã¬ã¹ãããã²ã³
åç©ãããã²ã³éååç©ãããã²ã³ã§çœ®æããã
ã·ã©ã³èªå°äœçã®ã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸãã
ãã²ã³ååç©ã奜ãŸããæããããã åãæŽã«ã¯ãã·ãªã³ã³ååãšããã²ã³ååãšã
æ§æèŠçŽ ãšããã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸããã
ãã²ã³ååãå«ãæ°ŽçŽ åç¡ çŽ ååç©ãæå¹ãªãã®
ãšããŠæ¬çºæã«ãããŠã¯æããããšãåºæ¥ãã æ¬çºæã«ãããŠå¥œé©ã«äœ¿çšãåŸãããã²ã³åå
ç©ãšããŠã¯ãå ·äœçã«ã¯ãããçŽ ãå¡©çŽ ãèçŽ ã
ãšãŠçŽ ã®ããã²ã³ã¬ã¹ãBrFãClFãClF3ã
BrF5ãBrF3ãIF3ãIF7ãIClãIBrçã®ããã²ã³
éååç©ãæããããšãåºæ¥ãã ããã²ã³ååãå«ãç¡ çŽ ååç©ãæè¬ãããã²
ã³ååã§çœ®æãããã·ã©ã³èªå°äœãšããŠã¯ãå ·äœ
çã«ã¯äŸãã°SiF4ãSi2F6ãSiCl4ãSiBr4çã®ã
ãã²ã³åç¡ çŽ ã奜ãŸãããã®ãšããŠæããããšã
åºæ¥ãã ãã®æ§ãªããã²ã³ååãå«ãç¡ çŽ ååç©ãæ¡çš
ããŠã°ããŒæŸé»æ³ã«ãã€ãŠæ¬çºæã®ç¹åŸŽçãªå å°
é»éšæã圢æããå Žåã«ã¯ãGeäŸçµŠçšã®åæã¬
ã¹ãšå ±ã«SiãäŸçµŠãåŸãåæã¬ã¹ãšããŠã®æ°ŽçŽ å
ç¡ çŽ ã¬ã¹ã䜿çšããªããšããææã®æ¯æäœäžã«ã
ãã²ã³ååãå«ãïœâSiGeããæã第ïŒã®å±€é
å(G)ã圢æããäºãåºæ¥ãã ã°ããŒæŸé»æ³ã«åŸã€ãŠãããã²ã³ååãå«ã第
ïŒã®å±€é å(G)ãäœæããå Žåãåºæ¬çã«ã¯ãäŸã
ã°SiäŸçµŠçšã®åæã¬ã¹ãšãªãããã²ã³åç¡ çŽ ãš
GeäŸçµŠçšã®åæã¬ã¹ãšãªãæ°ŽçŽ åã²ã«ãããŠã
ãšArãH2ãHeçã®ã¬ã¹çãæå®ã®æ··åæ¯ãšã¬ã¹
æµéã«ãªãæ§ã«ããŠç¬¬ïŒã®å±€é å(G)ã圢æããå
ç©å®€ã«å°å ¥ããã°ããŒæŸé»ãçèµ·ããŠããçã®ã¬
ã¹ã®ãã©ãºãé°å²æ°ã圢æããããšã«ãã€ãŠãæ
æã®æ¯æäœäžã«ç¬¬ïŒã®å±€é å(G)ã圢æãåŸããã®
ã§ããããæ°ŽçŽ ååã®å°å ¥å²åã®å¶åŸ¡ãäžå±€å®¹æ
ã«ãªãæ§ã«èšãçºã«ããçã®ã¬ã¹ã«æŽã«æ°ŽçŽ ã¬ã¹
åã¯æ°ŽçŽ ååãå«ãç¡ çŽ ååç©ã®ã¬ã¹ãææéæ··
åããŠå±€åœ¢æããŠãè¯ãã åãåã¬ã¹ã¯åç¬çš®ã®ã¿ã§ãªãæå®ã®æ··åæ¯ã§
è€æ°çš®æ··åããŠäœ¿çšããŠãå·®æ¯ããªããã®ã§ã
ãã ã¹ããã¿ãªã³ã°æ³ãã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®
äœãã®å Žåã«ã圢æãããå±€äžã«ããã²ã³ååã
å°å ¥ããã«ã¯ãåèšã®ããã²ã³ååç©åã¯åèšã®
ããã²ã³ååãå«ãç¡ çŽ ååç©ã®ã¬ã¹ãå ç©å®€äž
ã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°å²æ°ã圢æããŠã
ãã°è¯ããã®ã§ããã åãæ°ŽçŽ ååãå°å ¥ããå Žåã«ã¯ãæ°ŽçŽ ååå°
å ¥çšã®åæã¬ã¹ãäŸãã°ãH2ãæãã¯åèšãã
ã·ã©ã³é¡åã¯ïŒåã³æ°ŽçŽ åã²ã«ãããŠã çã®ã¬ã¹
é¡ãã¹ããã¿ãªã³ã°çšã®å ç©å®€äžã«å°å ¥ããŠè©²ã¬
ã¹é¡ã®ãã©ãºãé°å²æ°ã圢æããŠããã°è¯ãã æ¬çºæã«ãããŠã¯ãããã²ã³ååå°å ¥çšã®åæ
ã¬ã¹ãšããŠäžèšãããããã²ã³ååç©æãã¯ãã
ã²ã³ãå«ãç¡ çŽ ååç©ãæå¹ãªãã®ãšããŠäœ¿çšã
ãããã®ã§ãããããã®ä»ã«ãHFãHClã
HBrãHIçã®ããã²ã³åæ°ŽçŽ ãSiH2F2ã
SiH2I2ãSiH2Cl2ãSiTCl3ãSiH2Br2ãSiHBr3ç
ã®ããã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãåã³GeHF3ã
GeH2F2ãGeH3FãGeHCl3ãGeH2Cl2ã
GeH3ClãGeHBr3ãGeH2Br2ãGeH4Brã
GeHI3ãGeH2I2ãGeH3Içã®æ°ŽçŽ åããã²ã³å
ã²ã«ãããŠã ãçã®æ°ŽçŽ ååãæ§æèŠçŽ ã®ïŒã€ãš
ããããã²ã³åç©ãGeF4ãGeCl4ãGeBr4ã
GeI4ãGeF2ãGeCl2ãGeBr2ãGeI2çã®ããã²ã³
åã²ã«ãããŠã ãçã ã®ã¬ã¹ç¶æ ã®æãã¯ã¬ã¹å
ãåŸãç©è³ªãæå¹ãªç¬¬ïŒã®å±€é å(G)圢æçšã®åºçº
ç©è³ªãšããŠæããäºãåºæ¥ãã ããçã®ç©è³ªã®äžæ°ŽçŽ ååãå«ãããã²ã³åç©
ã¯ã第ïŒã®å±€é ååã³åèšç¬¬ïŒã®å±€é å圢æã®
éã«å±€äžã«ããã²ã³ååã®å°å ¥ãšåæã«é»æ°çæ
ãã¯å é»çç¹æ§ã®å¶åŸ¡ã«æ¥µããŠæå¹ãªæ°ŽçŽ ååã
å°å ¥ãããã®ã§ãæ¬çºæã«ãããŠã¯å¥œé©ãªããã²
ã³å°å ¥çšã®åæãšããŠäœ¿çšãããã æ°ŽçŽ ååã第ïŒã®å±€é å(G)äžã«æ§é çã«å°å ¥ã
ãã«ã¯ãäžèšã®ä»ã«H2ãæãã¯SiH4ãSi2H4ã
Si3H6ãSi4H10çã®æ°ŽçŽ åç¡ çŽ ãGeãäŸçµŠããçº
ã®ã²ã«ãããŠã åã¯ã²ã«ãããŠã ååç©ãšãæã
ã¯GeH4ïŒGe2H6ãGe3H6ãG84H10ãGe5H12ã
Ge6H1ãïŒGe7H16ïŒGe3H18ïŒGe9H20çã®æ°ŽçŽ å
ã²ã«ãããŠã ãšSiãäŸçµŠããçºã®ã·ãªã³ã³åã¯ã·
ãªã³ã³ååç©ãšãå ç©å®€äžã«å ±åãããŠæŸé»ãç
èµ·ãããäºã§ãè¡ãäºãåºæ¥ãã æ¬çºæã®å¥œãŸããäŸã«ãããŠã圢æãããéæ¶
質局ãæ§æãã第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ
ååã®éåã¯ããã²ã³ååã®éåã¯æ°ŽçŽ åå
ãšããã²ã³ååã®éã®åïŒïŒšïŒïŒžïŒã¯éåžžã®å Žå
0.01ã40atomicïŒ ã奜é©ã«ã¯0.05ã30atomicïŒ ã
æé©ã«ã¯0.1ã25atomicïŒ ãšãããã®ãæãŸããã 第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ åå(H)å
ã¯ïŒåã³ããã²ã³åå(X)ã®éãå¶åŸ¡ããã«ã¯ãäŸ
ãã°æ¯æäœæž©åºŠåã¯ïŒåã³æ°ŽçŽ åå(H)ãæãã¯ã
ãã²ã³åå(X)ãå«æãããçºã«äœ¿çšãããåºçºç©
質ã®å ç©è£ 眮系å ãžå°å ¥ããéãæŸé»ã åçãå¶
åžããŠããã°è¯ãã æ¬çºæã«æŒããŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§æãã
ã第ïŒã®å±€é åã圢æããã«ã¯åèšãã第ïŒã®å±€
é å(G)圢æçšã®åºçºç©è³ª(I)ã®äžãããGeäŸçµŠçš
ã®åæã¬ã¹ãšãªãåºçºç©è³ªãé€ããåºçºç©è³ªã第
ïŒã®å±€é å(S)圢æçšã®åºçºç©è³ªãã䜿çšããŠã
第ïŒã®å±€é å(G)ã圢æããå Žåãšåæ§ã®æ¹æ³ãšæ¡
件ã«åŸã€ãŠè¡ãããšãåºæ¥ãã å³ã¡ãæ¬çºæã«ãããŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§
æããã第ïŒã®å±€é å(S)ã圢æããã«ã¯äŸãã°ã°
ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ãæãã¯ã€ãªã³ã
ã¬ãŒãã€ã³ã°æ³çã®æŸé»çŸè±¡ãå©çšããç空å ç©
æ³ã«ãã€ãŠæããããäŸãã°ãã°ããŒæŸé»æ³ã«ã
ã€ãŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§æããã第ïŒå±€é å
(S)ã圢æããã«ã¯ãåºæ¬çã«ã¯åèšããã·ãªã³ã³
ååïŒSiïŒãäŸçµŠãåŸãSiäŸçµŠçšã®åæã¬ã¹ãšå ±
ã«ãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)å°å ¥çšã®åã¯ïŒåã³
ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹ããå éšãæžå§
ã«ãåŸãå ç©å®€å ã«å°å ¥ããŠã該å ç©å®€å ã«ã°ã
ãŒæŸé»ãçèµ·ãããäºãæå®äœçœ®ã«èšçœ®ãããŠã
ãæå®ã®æ¯æäœè¡šé¢äžã«ïœâSiïŒïŒšïŒïŒžïŒãããª
ãå±€ã圢æãããã°è¯ããåãã¹ããã¿ãªã³ã°æ³
ã§åœ¢æããå Žåã«ã¯ãäŸãã°ArãHeçã®äžæŽ»æ§
ã¬ã¹åã¯ããçã®ã¬ã¹ãããŒã¹ãšããæ··åã¬ã¹ã®
é°å²æ°äžã§Siã§æ§æãããã¿ãŒã²ãããã¹ããã¿
ãªã³ã°ããéãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³å
å(X)å°å ¥çšã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®å ç©å®€ã«
å°å ¥ããŠããã°ããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãã²ã«ãããŠã
ååã®å«æããã第ïŒã®å±€é å(G)ã®äžã«èšãã
ããã²ã«ãããŠã ååã®å«æãããªã第ïŒã®å±€é
å(S)ã«ã¯ãäŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªãå«æããã
ããšã«ããã該局é å(S)ã®äŒå°ç¹æ§ãææã«åŸã€
ãŠä»»æã«å¶åŸ¡ããããšãåºæ¥ãã ãã®æ§ãªç©è³ªãšããŠã¯ãæè¬ãåå°äœåéã§äº
ãããäžçŽç©ãæããããšãåºæ¥ãæ¬çºæã«æŒã
ãŠã¯ã圢æããã第ïŒã®å±€é å(S)ãæ§æããïœâ
SiïŒïŒšïŒïŒžïŒã«å¯ŸããŠãåäŒå°ç¹æ§ãäžãã
åäžçŽç©ãåã³ïœåäŒå°ç¹æ§ãäžããïœåäžçŽç©
ãæããããšãåºæ¥ãã å ·äœçã«ã¯ãåäžçŽç©ãšããŠã¯ãåšæåŸè¡šç¬¬
æã«å±ããååïŒç¬¬æååïŒãäŸãã°ãïŒç¡Œ
çŽ ïŒãAlïŒã¢ã«ãããŠã ïŒãGaïŒã¬ãªãŠã ïŒãInïŒã€
ã³ãžãŠã ïŒãTlïŒã¿ãªãŠã ïŒçããããæ®ã«å¥œé©
ã«çšããããã®ã¯ããGaã§ãããïœåäžçŽç©
ãšããŠã¯ãåšæåŸè¡šç¬¬æã«å±ããååïŒç¬¬æ
ååïŒãäŸãã°ãïŒçïŒãAsïŒç çŽ ïŒãSbïŒã¢ã³ã
ã¢ã³ïŒãBiïŒãã¹ãã¹ïŒçã§ãããæ®ã«å¥œé©ã«çš
ããããã®ã¯ããAsã§ããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(S)ã«å«æããã
äŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªã®å«æéã¯ã該局é å(S)
ã«èŠæ±ãããäŒå°ç¹æ§ãæãã¯è©²å±€é å(S)ã«çŽã«
æ¥è§ŠããŠèšããããä»ã®å±€é å(S)ã®ç¹æ§ãã該ä»
ã®å±€é å(S)ãšã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿
çãææ©çé¢é£æ§ã«æŒããŠãé©å®éžæããããšã
åºæ¥ãã æ¬çºæã«æŒããŠã第ïŒã®å±€é åå(S)äžã«å«æã
ããäŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªã®å«æéãšããŠã¯ã
éåžžã®å Žåã0.001ã1000atomic ppmã奜é©ã«ã¯
0.05ã500atomic ppmãæé©ã«ã¯0.1ã200atomic
ppmãšãããã®ãæãŸãããã®ã§ããã 第ïŒã®å±€é å(S)äžã«äŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªäŸ
ãã°ç¬¬æååãæãã¯ã第æååãæ§é çã«
å°å ¥ããã«ã¯ã局圢æã®éã«ç¬¬æååå°å ¥çšã®
åºçºç©è³ªãæãã¯ã第æååå°å ¥çšã®åºçºç©è³ª
ãã¬ã¹ç¶æ ã§å ç©å®€äžã«ã第ïŒã®å±€é åã圢æã
ãçºã®ä»ã®åºçºç©è³ªãšå ±ã«å°å ¥ããŠããã°è¯ãã
ãã®æ§ãªç¬¬æååå°å ¥çšã®åºçºç©è³ªãšæãåŸã
ãã®ãšããŠã¯ãåžžæž©åžžå§ã§ã¬ã¹ç¶ã®åã¯ãå°ãªã
ãšã局圢ææ¡ä»¶äžã§å®¹æã«ã¬ã¹åãåŸããã®ãæ¡
çšãããã®ãæãŸããããã®æ§ãªç¬¬æååå°å ¥
çšã®åºçºç©è³ªãšããŠå ·äœçã«ã¯ç¡ŒçŽ ååå°å ¥çšãš
ããŠã¯ãB2H6ãB4H10ãB3H9ãB5H11ãB6H10ã
B6H12ãB6H14çã®æ°ŽçŽ åç¡ŒçŽ ãBF3ãBCl3ã
BBr3ãçã®ããã²ã³åç¡ŒçŽ çãæãããããã
ã®ä»ãAlCl3ãGaCl3ãGaïŒCH3ïŒ3ãInCl3ãTlCl3
çãæããããšãåºæ¥ãã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠãæ¬çºæã«
ãããŠæå¹ã«äœ¿çšãããã®ã¯ãçååå°å ¥çšãšã
ãŠã¯ãPH3ãP2H4çã®æ°ŽçŽ åçãPH4IãPF3ã
PF5ãPCl3ãPCl3ãPBr3ãPBr5ãPI3çã®ããã²
ã³åçãæããããããã®ä»ã(s)H3ã(s)F3ã
A3Cl3ãASBr3ãASF5ãSbH3ãSbF3ãSbF5ã
SbCl3ãSbCl5ãBiH3ãBiCl3ãBiBr3çã第æ
ååå°å ¥çšã®åºçºç©è³ªã®æå¹ãªãã®ãšããŠæãã
ããšãåºæ¥ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«é žçŽ ååã®å«æã
ããå±€é å(O)ãèšããã«ã¯ãéæ¶è³ªå±€ã®åœ¢æã®é
ã«é žçŽ ååå°å ¥çšã®åºçºç©è³ªãåèšããéæ¶è³ªå±€
圢æçšã®åºçºç©è³ªãšå ±ã«äœ¿çšããŠã圢æãããå±€
äžã«ãã®éãå¶åŸ¡ãä¹ãå«æããŠããã°è¯ããå±€
é å(O)ã圢æããã®ã«ã°ããŒæŸé»æ³ãçšããå Žå
ã«ã¯ãåèšããéæ¶è³ªå±€åœ¢æçšã®åºçºç©è³ªã®äžã
ãææã«åŸã€ãŠéžæããããã®ã«é žçŽ ååå°å ¥çš
ã®åºçºç©è³ªãå ããããããã®æ§ãªé žçŽ ååå°å ¥
çšã®åºçºç©è³ªãšããŠã¯ãå°ãªããšãé žçŽ ååãæ§
æååãšããã¬ã¹ç¶ã®ç©è³ªåã¯ã¬ã¹åãåŸãç©è³ª
ãã¬ã¹åãããã®ã®äžã®å€§æŠã®ãã®ã䜿çšããåŸ
ãã äŸãã°ã·ãªã³ã³ååïŒSiïŒãæ§æååãšããå
æã¬ã¹ãšãé žçŽ åå(O)ãæ§æååãšããåæã¬ã¹
ãšãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)åã¯åã³ããã²ã³å
å(X)ãæ§æååãšããåæã¬ã¹ãšãææã®æ··åæ¯
ã§æ··åããŠäœ¿çšããããåã¯ãã·ãªã³ã³ååSiã
æ§æååãšããåæã¬ã¹ãšãé žçŽ åå(O)åã³æ°ŽçŽ
åå(H)ãæ§æååãšããåæã¬ã¹ãšãããããå
ææã®æ··åæ¯ã§æ··åããããæãã¯ãã·ãªã³ã³å
åïŒSiïŒãæ§æååãšããåæã¬ã¹ãšãã·ãªã³ã³
ååïŒSiïŒãé žçŽ åå(O)åã³æ°ŽçŽ åå(H)ã®ïŒã€ã®
æ§æååãšããåæã¬ã¹ãšãæ··åããŠäœ¿çšããã
ãšãåºæ¥ãã åãå¥ã«ã¯ãã·ãªã³ã³ååïŒSiïŒãšæ°ŽçŽ åå(H)
ãšãæ§æååãšããåæã¬ã¹ã«é žçŽ åå(O)ãæ§æ
ååãšããåæã¬ã¹ãæ··åããŠäœ¿çšããŠãè¯ãã å ·äœçã«ã¯ãäŸãã°é žçŽ ïŒO2ïŒããªãŸã³ïŒO3ïŒã
äžé žåçªçŽ ïŒNOïŒãäºé žåçªçŽ ïŒNO2ïŒãäžäºé ž
åçªçŽ ïŒN2OïŒãäžäºé žåçªçŽ ïŒN2O3ïŒãåäºé ž
åçªçŽ ïŒN2O4ïŒãäºäºé žåçªçŽ ïŒN2O5ïŒãäžé žå
çªçŽ ïŒNO3ïŒãã·ãªã³ã³ååïŒSiïŒãšé žçŽ åå(O)
ãšæ°ŽçŽ åå(H)ãšãæ§æååãšãããäŸãã°ããžã·
ãããµã³ïŒH3SiOSiH3ïŒãããªã·ãããµã³
ïŒH3SiOSiH2OSiH3ïŒçã®äœçŽã·ãããµã³çãæ
ããããšãåºæ¥ãã ã¹ããã¿ãŒãªã³ã°æ³ã«ãã€ãŠãé žçŽ ååãå«æ
ãã第äžã®éæ¶è³ªå±€ïŒïŒ©ïŒã圢æããã«ã¯ãåçµ
æ¶åã¯å€çµæ¶ã®SiãŠãšãŒããŒåã¯SiO2ãŠãšãŒã
ãŒãåã¯SiãšSiO2ãæ··åãããŠå«æãããŠãã
ãŠãšãŒããŒãã¿ãŒã²ãããšããŠãããçãçš®ã ã®
ã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³ã°ããããšã«ãã€ãŠ
è¡ãã°è¯ãã äŸãã°ãSiãŠãšãŒããŒãã¿ãŒã²ãããšããŠäœ¿çš
ããã°ãé žçŽ ååãå¿ èŠã«å¿ããŠæ°ŽçŽ åååã¯ïŒ
åã³ããã²ã³ååãå°å ¥ããçºã®åæã¬ã¹ããå¿
èŠã«å¿ããŠçšéã¬ã¹ã§çšéããŠãã¹ããã¿ãŒçšã®
å ç©å®€äžã«å°å ¥ããããçã®ã¬ã¹ã®ã¬ã¹ãã©ãºã
ã圢æããŠåèšSiãŠãšãŒããŒãã¹ããã¿âãªã³ã°
ããã°è¯ãã åãå¥ã«ã¯ãSiãšSiO2ãšã¯å¥ã ã®ã¿ãŒã²ãã
ãšããŠãåã¯SiãšSiO2ã®æ··åããäžæã®ã¿ãŒã²
ããã䜿çšããããšã«ãã€ãŠãã¹ããã¿ãŒçšã®ã¬
ã¹ãšãšããŠã®ã®çšéã¬ã¹ã®é°å²æ°äžã§åã¯å°ãªã
ãšãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³åå(X)ãæ§æ
ååãšããŠå«æããã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³
ã°ããããšã«ãã€ãŠæããããé žçŽ ååå°å ¥çšã®
åæã¬ã¹ãšããŠã¯ãå è¿°ãããã°ããŒæŸé»ã®äŸã§
瀺ããåæã¬ã¹ã®äžã®é žçŽ ååå°å ¥çšã®åæã¬ã¹
ããã¹ããã¿ãªã³ã°æ³ã®å Žåã«ãæå¹ãªã¬ã¹ãšã
ãŠäœ¿çšããåŸãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã®åœ¢æã®éã«ãé žçŽ
ååã®å«æãããå±€é å(O)ãèšããå Žåã該局é
å(O)ã«å«æãããé žçŽ ååã®ååžæ¿åºŠïŒ£(O)ãå±€å
æ¹åã«å€åãããŠææã®å±€åæ¹åã®ååžç¶æ
ïŒdepth profileïŒãæããå±€é å(O)ã圢æããã«
ã¯ãã°ããŒæŸé»ã®å Žåã«ã¯ååžæ¿åºŠïŒ£(O)ãå€åã
ããã¹ãé žçŽ ååå°å ¥çšã®åºçºç©è³ªã®ã¬ã¹ããã
ã®ã¬ã¹æµéãææã®å€åçæ²ç·ã«åŸã€ãŠé©å®å€å
ããä¹ããå ç©å®€å ã«å°å ¥ããããšã«ãã€ãŠæã
ãããäŸãã°æåãããã¯å€éšé§åã¢ãŒã¿çã®é
åžžçšããããŠããäœããã®æ¹æ³ã«ãããã¬ã¹æµè·¯
ç³»ã®éäžã«èšããããæå®ã®ããŒãã«ãã«ãã®é
å£ã挞次å€åãããæäœãè¡ãªãã°è¯ãããã®ãš
ããæµéã®å€åçã¯ç·åã§ããå¿ èŠã¯ãªãäŸãã°
ãã€ã³ã³çãçšããŠããããããèšèšãããå€å
çæ²ç·ã«åŸã€ãŠæµéãå¶åŸ¡ããææã®å«æçæ²ç·
ãåŸãããšãã§ããã å±€é å(O)ãã¹ããã¿ãŒãªã³ã°æ³ã«ãã€ãŠåœ¢æã
ãå Žåãé žçŽ ååã®å±€åæ¹åã®ååžæ¿åºŠïŒ£(O)ãå±€
åæ¹åã§å€åãããŠãé žçŽ ååã®å±€åæ¹åã®ææ
ã®ååžç¶æ ïŒdepth profileïŒã圢æããã«ã¯ã
第äžã«ã¯ãã°ããŒæŸé»æ³ã«ããå Žåãšåæ§ã«ãé ž
çŽ ååå°å ¥çšã®åºçºç©è³ªãã¬ã¹ç¶æ ã§äœ¿çšãã該
ã¬ã¹ãå ç©å®€äžãžå°å ¥ããéã®ã¬ã¹æµéãææã«
åŸã€ãŠé©å®å€åãããããšã«ãã€ãŠæãããã 第äºã«ã¯ãã¹ããã¿ãŒãªã³ã°çšã®ã¿ãŒã²ãã
ããäŸãã°ãSiãšSiO2ãšã®æ··åãããã¿ãŒã²ã
ãã䜿çšããã®ã§ããã°ãSiãšSiO2ãšã®æ··åæ¯
ããã¿ãŒã²ããã®å±€åæ¹åã«æŒããŠãäºãå€åã
ããŠããããšã«ãã€ãŠæãããã æ¬çºæã«æŒããŠã圢æãããéæ¶è³ªå±€ãæ§æã
ã第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ åå(H)ã®é
åã¯ããã²ã³åå(X)ã®éåã¯æ°ŽçŽ ååãšããã²ã³
ååã®éã®åïŒïŒšïŒïŒžïŒã¯ãéåžžã®å ŽåïŒã
40atomicïŒ ã奜é©ã«ã¯ïŒã30atomicïŒ ãæé©ã«
ã¯ïŒã25atomicïŒ ãšãããã®ãæãŸããã æ¬çºæã«ãããŠäœ¿çšãããæ¯æäœãšããŠã¯ãå°
é»æ§ã§ãé»æ°çµ¶çžæ§ã§ãã€ãŠãè¯ããå°é»æ§æ¯æ
äœãšããŠã¯ãäŸãã°ãNiCrãã¹ãã³ã¬ã¹ãAlã
CrãMoãAuãNbãTaããTiãPtãPdçã®
éå±åã¯ããçã®åéãæããããã é»æ°çµ¶çžæ§æ¯æäœãšããŠã¯ãããªãšã¹ãã«ãã
ãªãšãã¬ã³ãããªã«ãŒãããŒããã»ã«ããŒã«ã¢ã»
ããŒããããªãããã¬ã³ãããªå¡©åããã«ãããª
å¡©åãããªãã³ãããªã¹ãã¬ã³ãããªã¢ããçã®
åææš¹èã®ãã€ã«ã åã¯ã·ãŒããã¬ã©ã¹ãã»ã©ã
ãã¯ãçŽçãé垞䜿çšããããããçã®é»æ°çµ¶çž
æ§æ¯æäœã¯ã奜é©ã«ã¯å°ãªããšããã®äžæ¹ã®è¡šé¢
ãå°é»åŠçããã該å°é»åŠçãããè¡šé¢åŽã«ä»ã®
å±€ãèšããããã®ãæãŸããã äŸãã°ãã¬ã©ã¹ã§ããã°ããã®è¡šé¢ã«ãNiCrã
AlãCrãMoãAuãIrãNbãTaããTiãPtã
PdãIn2O3ãSnO2ãITOïŒIn2O3ïŒSnO2ïŒçãã
æãèèãèšããããšã«ãã€ãŠå°é»æ§ãä»äžã
ããæãã¯ããªãšã¹ãã«ãã€ã«ã çã®åææš¹èã
ã€ã«ã ã§ããã°ãNiCrãArãAgãPbãZnã
NiãAuãCrãMoãIrãNbãTaããTiãPt
çã®éå±ã®èèãç空èžçãé»åããŒã èžçãã¹
ããã¿ãªã³ã°çã§ãã®è¡šé¢ã«èšããåã¯åèšéå±
ã§ãã®è¡šé¢ãã©ãããŒãåŠçããŠããã®è¡šé¢ã«å°
é»æ§ãä»äžããããæ¯æäœã®åœ¢ç¶ãšããŠã¯ãåç
ç¶ããã«ãç¶ãæ¿ç¶çä»»æã®åœ¢ç¶ãšãåŸãææã«
ãã€ãŠããã®åœ¢ç¶ã¯æ±ºå®ãããããäŸãã°ã第ïŒ
å³ã®å å°é»éšæïŒïŒïŒãé»ååççšå圢æéšæãš
ããŠäœ¿çšããã®ã§ããã°é£ç¶é«éè€åã®å Žåã«
ã¯ãç¡ç«¯ãã«ãç¶åã¯åçç¶ãšããã®ãæãŸã
ããæ¯æäœã®åãã¯ãææéãã®å å°é»éšæã圢
æãããæ§ã«é©å®æ±ºå®ãããããå å°é»éšæãšã
ãŠå¯ææ§ãèŠæ±ãããå Žåã«ã¯ãæ¯æäœãšããŠã®
æ©èœãå åçºæ®ãããç¯å²å ã§ããã°å¯èœãªéã
èãããããèä¹ãããã®æ§ãªå Žåæ¯æäœã®è£œé
äžåã³åæ±ãäžãæ©æ¢°ç匷床çã®ç¹ãããéåžž
ã¯ã10Ό以äžãšãããã 次ã«æ¬çºæã®å å°é»éšæã®è£œé æ¹æ³ã®äžäŸã®æŠ
ç¥ã«ã€ããŠèª¬æããã 第ïŒïŒå³ã«å å°é»éšæã®è£œé è£ çœ®ã®äžäŸã瀺
ãã å³äžã®1102ã1106ã®ã¬ã¹ãã³ãã«ã¯ãæ¬çºæã®
å å°é»éšæã圢æããããã®åæã¬ã¹ãå¯å°ãã
ãŠããããã®ïŒäŸãšããŠããšãã°1102ã¯ãHeã§
çšéãããSiH4ã¬ã¹ïŒçŽåºŠ99.999ïŒ ã以äž
SiH4ïŒHeãšç¥ããïŒãã³ãã1103ã¯Heã§çšéã
ããGeH4ã¬ã¹ïŒçŽåºŠ99.999ïŒ ã以äžGeH4ïŒHe
ãšç¥ããïŒãã³ãã1104ã¯Heã§çšéãããSiF4ã¬
ã¹ïŒçŽåºŠ99.99ïŒ ã以äžSiF4ïŒHeãšç¥ããïŒãã³
ãã1105ã¯NOã¬ã¹ïŒçŽåºŠ99.999ïŒ ïŒãã³ãã
1106ã¯H2ã¬ã¹ïŒçŽåºŠ99.999ïŒ ïŒãã³ãã§ããã ãããã®ã¬ã¹ãåå¿å®€ïŒïŒïŒã«æµå ¥ãããã«ã¯
ã¬ã¹ãã³ã1102ã1106ã®ãã«ã1122ã1126ããªãŒ
ã¯ãã«ã1135ãéããããŠããããšã確èªãã
åãæµå ¥ãã«ã1112ã1116ãæµåºãã«ã1117ã
1121ãè£å©ãã«ã1132ïŒ1133ãéãããŠããããš
ã確èªããŠãå ã¥ã¡ã€ã³ãã«ã1134ãéããŠåå¿
宀1101ãåã³åã¬ã¹é 管å ãææ°ããã次ã«ç空
èš1136ã®èªã¿ãçŽïŒÃ10-6torrã«ãªã€ãæç¹ã§è£
å©ãã«ã1132ïŒ1133ãæµåºãã«ã1117ã1121ãé
ããã 次ã«ã·ãªã³ããŒç¶åºäœ1137äžã«éæ¶è³ªå±€ã圢æ
ããå Žåã®ïŒäŸãããããšãã¬ã¹ãã³ã1102ãã
SiH4ïŒHeã¬ã¹ãã¬ã¹ãã³ã1103ããGeH4ïŒHe
ã¬ã¹ãã¬ã¹ãã³ã1105ããNOã¬ã¹ããã«ã
1122ïŒ1123ïŒ1124ãéããŠåºå£å§ã²ãŒãž1127ïŒ
1128ïŒ1129ã®å§ãïŒKgïŒcm2ã«èª¿æŽããæµå ¥ãã«ã
1112ïŒ1113ïŒ1114ãåŸã ã«éããŠããã¹ããã³ã³
ãããŒã©1107ïŒ1108ïŒ1109å ã«å€«ã æµå ¥ãããã
åŒãç¶ããŠæµåºãã«ã1117ïŒ1118ïŒ1119ãè£å©ã
ã«ã1132ãåŸã ã«éããŠå€«ã ã®ã¬ã¹ãåå¿å®€1101
ã«æµå ¥ãããããã®ãšãã®SiH4ïŒHeã¬ã¹æµéãš
GeH4ïŒHeã¬ã¹æµéãšNOã¬ã¹æµéãšã®æ¯ãææ
ã®å€ã«ãªãããã«æµåºãã«ã1117ïŒ1118ïŒ1119ã
調æŽããåãåå¿å®€1101å ã®å§åãææã®å€ã«ãª
ãããã«ç空èš1136ã®èªã¿ãèŠãªããã¡ã€ã³ãã«
ã1134ã®éå£ã調æŽããããããŠåºäœ1137ã®æž©åºŠ
ãå ç±ããŒã¿ãŒ1138ã«ãã50ã400âã®ç¯å²ã®æž©
床ã«èšå®ãããŠããããšã確èªãããåŸé»æº1140
ãææã®é»åã«èšå®ããŠåå¿å®€1101å ã«ã°ããŒæŸ
é»ãçèµ·ããæææéã°ããŒæŸé»ãç¶æããŠãæ
æå±€åã«ãåºäœ1137äžã«ç¬¬ïŒã®å±€é å(G)ã圢æã
ããææå±€åã«ç¬¬ïŒã®å±€é å(G)ã圢æããã段é
ã«æŒããŠãæµåºãã«ã1118ãå®å šã«éããããšã
åã³å¿ èŠã«å¿ããŠæŸé»æ¡ä»¶ãå€ãã以å€ã¯ãåæ§
ãªæ¡ä»¶ãšæé ã«åŸã€ãŠæææéã°ããŒæŸé»ãç¶æ
ããããšã§ã第ïŒã®å±€é åäžã«ã²ã«ãããŠã å
åã®å®è³ªçã«å«æãããªã第ïŒã®å±€é å(S)ã圢æ
ããããšãåºæ¥ãã 第ïŒã®å±€é å(S)äžã«äŒå°æ§ãæ¯é ããç©è³ªãå«
æãããã«ã¯ç¬¬ïŒã®å±€é å(S)ã®åœ¢æã®éã«äŸã
ã°ãB2H6ãPH3çã®ã¬ã¹ãå ç©å®€1101ã®äžã«å°
å ¥ããã¬ã¹ã«å ããŠããã°è¯ãã 局圢æãè¡ã€ãŠããéã¯å±€åœ¢æã®åäžåãèšã
ããåºäœ1137ã¯ã¢ãŒã¿1139ã«ããäžå®é床ã§å転
ãããŠããã®ãæãŸããã 以äžå®æœäŸåã³åèäŸã«ã€ããŠèª¬æããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ãããã·ãªã³ããŒ
ç¶ã®Alåºäœäžã«ç¬¬ïŒè¡šã«ç€ºãæ¡ä»¶ã§å±€åœ¢æãè¡
ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.3secéã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ããå åã¯ã¿ã³ã°ã¹ãã³ã©
ã³ãå æºãçšãã2lux.secã®å éãééåã®ãã¹
ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãŒãå«ãïŒãå圢æéšæè¡šé¢ãã«ã¹ã±ãŒã
ããããšã«ãã€ãŠãå圢æéšæè¡šé¢äžã«è¯å¥œãªã
ããŒç»åãåŸããå圢æéšæäžã®ãããŒç»åãã
5.0KVã®ã³ãã垯é»ã§è»¢åçŽäžã«è»¢åããæã
解ååã«åªããé調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®
ç»åãåŸãããã å®æœäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ããã第ïŒè¡šã«ç€º
ãæ¡ä»¶ã«ãã以å€ã¯åèäŸïŒãšåæ§ã«ããŠã局圢
æãè¡ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæã«å°±ããŠåž¯é»æ¥µæ§
ãšçŸåå€ã®è·é»æ¥µæ§ã®å€«ã ãåèäŸïŒãšå察ã«ã
ã以å€ã¯åèäŸïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽ
äžã«ç»åã圢æãããšãã極ããŠé®®æãªç»è³ªãåŸ
ãããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ããã第ïŒè¡šã«ç€º
ãæ¡ä»¶ã«ãã以å€ã¯åèäŸïŒãšåæ§ã«ããŠã局圢
æãè¡ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæã«å°±ããŠãåèäŸ
ïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢æ
ãããšãã極ããŠé®®æãªç»è³ªãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠãGeH4ïŒHeã¬ã¹ãšSiH4ïŒ
Heã¬ã¹ã®ã¬ã¹æµéæ¯ãå€ããŠç¬¬ïŒå±€äžã«å«æã
ããã²ã«ãããŠã ååã®å«æéã第ïŒè¡šã«ç€ºãæ§
ã«å€ãã以å€ã¯ãåèäŸïŒãšåæ§ã«ããŠé»ååç
çšå圢æéšæã倫ã äœæããã ããããŠåŸãããå圢æéšæã«å°±ããŠãåèäŸ
ïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢æ
ãããšãã第ïŒè¡šã«ç€ºãçµæãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠã第ïŒå±€ã®å±€åã第ïŒè¡šã«ç€º
ãããã«å€ãã以å€ã¯ãåèäŸïŒãšåæ§ã«ããŠå
é»ååççšå圢æéšæãäœæããã ããããŠåŸãããåå圢æéšæã«å°±ããŠãåè
äŸïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢
æãããšãã第ïŒè¡šã«ç€ºãçµæãåŸãããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ãããã·ãªã³ããŒ
ç¶ã®Alåºäœäžã«ç¬¬ïŒè¡šã«ç€ºãæ¡ä»¶ã§å±€åœ¢æãè¡
ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.3secéã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ããå åã¯ã¿ã³ã°ã¹ãã³ã©
ã³ãå æºãçšãã2lux.secã®å éãééåã®ãã¹
ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãŒãå«ãïŒãå圢æéšæè¡šé¢ãã«ã¹ã±ãŒã
ããããšã«ãã€ãŠãå圢æéšæè¡šé¢äžã«è¯å¥œãªã
ããŒç»åãåŸããå圢æéšæäžã®ãããŒç»åãã
5.0KVã®ã³ãã垯é»ã§è»¢åçŽäžã«è»¢åããæã
解ååã«åªããé調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®
ç»åãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠå æºãã¿ã³ã°ã¹ãã³ã©ã³ãã®
代ãã«810nmã®GaAsç³»åå°äœã¬ãŒã¶ïŒ10mWïŒ
ãçšããŠãéé»åã®åœ¢æãè¡ã€ã以å€ã¯ãåèäŸ
ïŒãšåæ§ã®ãããŒç»å圢ææ¡ä»¶ã«ããŠãåèäŸïŒ
ãšåæ§ã®æ¡ä»¶ã§äœæããé»ååççšå圢æéšæã«
å°±ããŠãããŒè»¢åç»åã®ç»è³ªè©äŸ¡ãè¡ã€ããšã
ãã解ååã«åªããé調åçŸæ§ã®è¯ãé®®æãªé«å
äœã®ç»åãåŸãããã
ç·ãå¯èŠå ç·ãèµ€å€å ç·ãç·ãγç·çã瀺ãïŒ
ã®æ§ãªé»ç£æ³¢ã«æåæ§ã®ããå å°é»éšæã«é¢ã
ãã åºäœæ®åè£ çœ®ãæãã¯å圢æåéã«ãããé»å
åççšå圢æéšæãåçš¿èªåè£ çœ®ã«ãããå å°é»
å±€ã圢æããå å°é»ææãšããŠã¯ãé«æ床ã§ã
SNæ¯ãå é»æµïŒIpïŒïŒæé»æµïŒIdïŒããé«ããç §
å°ããé»ç£æ³¢ã®ã¹ãã¯ãã«ç¹æ§ã«ãããã³ã°ãã
åžåã¹ãã¯ãã«ç¹æ§ãæããããšãå å¿çæ§ãé
ããææã®ææµæå€ãæããããšã䜿çšæã«ãã
ãŠäººäœã«å¯ŸããŠç¡å ¬å®³ã§ããããšãæŽã«ã¯åºäœæ®
åè£ çœ®ã«ãããŠã¯ãæ®åãæå®æéå ã«å®¹æã«åŠ
çããããšãã§ããããšçã®ç¹æ§ãèŠæ±ãããã
æ®ã«ãäºåæ©ãšããŠãªãã€ã¹ã§äœ¿çšãããé»åå
çè£ çœ®å ã«çµèŸŒãŸããé»ååççšå圢æéšæã®å Ž
åã«ã¯ãäžèšã®äœ¿çšæã«ãããç¡å ¬å®³æ§ã¯éèŠãª
ç¹ã§ããã ãã®æ§ãªç¹ã«ç«èããŠæè¿æ³šç®ãããŠããå å°
é»ææã«ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥åŸïœâSiãè¡š
èšãïŒããããäŸãã°ãç¬åœå ¬é第2746967å·å ¬
å ±ããå第2855718å·å ¬å ±ã«ã¯é»ååççšå圢æéš
æãšããŠãç¬åœå ¬é第2933411å·å ¬å ±ã«ã¯å é»å€
æèªåè£ çœ®ãžã®å¿çšãèšèŒãããŠããã èä¹ããåŸæ¥ã®ïœâSiã§æ§æãããå å°é»å±€ã
æããå å°é»éšæã¯ãææµæå€ãå æ床ãå å¿ç
æ§çã®é»æ°çãå åŠçãå å°é»çç¹æ§ãåã³è湿
æ§çã®äœ¿çšç°å¢ç¹æ§ã®ç¹ãæŽã«ã¯çµæçå®å®æ§ã®
ç¹ã«ãããŠãç·åçãªç¹æ§åäžãèšãå¿ èŠããã
ãšããæŽã«æ¹è¯ãããå¯ãç¹ãåããã®ãå®æ ã§
ããã äŸãã°ãé»ååççšå圢æéšæã«é©çšããå Žå
ã«ãé«å æ床åãé«ææµæåãåæã«èšãããšã
ããšãåŸæ¥ã«ãããŠã¯ããã®äœ¿çšæã«ãããŠæ®ç
é»äœãæ®ãå Žåã床ã 芳枬ããããã®çš®ã®å å°é»
éšæã¯é·æéç¹°è¿ã䜿çšãç¶ãããšãç¹°è¿ã䜿çš
ã«ããç²åŽã®èç©ãèµ·ã€ãŠãæ®åãçããæè¬ãŽ
ãŒã¹ãçŸè±¡ãçºããæ§ã«ãªãæãã¯ãé«éã§ç¹°è¿
ã䜿çšãããšå¿çæ§ã次第ã«äœäžããçã®äžéœå
ãªç¹ãçããå Žåãå°ãªããªãã€ãã æŽã«ã¯ãïœâSiã¯å¯èŠå é åã®çæ³¢é·åŽã«èŒã¹
ãŠãé·æ³¢é·åŽã®æ³¢é·é åãããé·ãæ³¢é·é åã®åž
åä¿æ°ãæ¯èŒçå°ãããçŸåšå®çšåãããŠããå
å°äœã¬ãŒã¶ãšã®ãããã³ã°ã«æŒããŠãé垞䜿çšã
ããŠããããã²ã³ã©ã³ããè¢å ç¯ãå æºãšããå Ž
åãé·æ³¢é·åŽã®å ãæå ã«äœ¿çšãåŸãŠããªããšã
ãç¹ã«æŒããŠã倫ã æ¹è¯ãããäœå°ãæ®ã€ãŠã
ãã åãå¥ã«ã¯ãç §å°ãããå ãå å°é»å±€äžã«æŒã
ãŠãå ååžåãããã«ãæ¯æäœã«å°éããå ã®é
ãå€ããªããšãæ¯æäœèªäœãå å°é»å±€ãééããŠ
æ¥ãå ã«å¯Ÿããåå°çãé«ãå Žåã«ã¯ãå å°é»å±€
å ã«æŒããŠå€éåå°ã«ããå¹²æžãèµ·ã€ãŠãç»åã®
ããã±ããçããäžèŠå ãšãªãã ãã®åœ±é¿ã¯ã解å床ãäžããçºã«ãç §å°ã¹ãã
ããå°ããããçšå€§ãããªããæ®ã«å å°äœã¬ãŒã¶
ãå æºãšããå Žåã«ã¯å€§ããªåé¡ãšãªã€ãŠããã æŽã«ãïœâSiææã§å å°é»å±€ãæ§æããå Žåã«
ã¯ããã®é»æ°çãå å°é»çç¹æ§ã®æ¹è¯ãèšããã
ã«ãæ°ŽçŽ ååæãã¯åŒçŽ ååãå¡©çŽ ååçã®ãã
ã²ã³ååãåã³é»æ°äŒå°åã®å¶åŸ¡ã®ããã«ç¡ŒçŽ å
åãçååçãæãã¯ãã®ä»ã®ç¹æ§æ¹è¯ã®ããã«
ä»ã®ååããåã æ§æååãšããŠå å°é»å±€äžã«å«
æãããããããçã®æ§æååã®å«æã®ä»æ¹åŠäœ
ã«ãã€ãŠã¯ã圢æããå±€ã®é»æ°çæãã¯å å°é»ç
ç¹æ§ã«åé¡ãçããå Žåãããã å³ã¡ãäŸãã°ã圢æããå å°é»å±€äžã«å ç §å°ã«
ãã€ãŠçºçããããªããã€ãªã¢ã®è©²å±€äžã§ã®å¯¿åœ
ãå åã§ãªãããšãæãã¯æéšã«ãããŠãæ¯æäœ
åŽããã®é»è·ã®æ³šå ¥ã®é»æ¢ãå åã§ãªãããšçã
çããå Žåãå°ãªããªãã æŽã«ã¯ãå±€åãåæ°ÎŒä»¥äžã«ãªããšå±€åœ¢æçšã®
ç空å ç©å®€ããåãåºããåŸã空æ°äžã§ã®æŸçœ®æ
éã®çµéãšå ±ã«ãæ¯æäœè¡šé¢ããã®å±€ã®æµ®ããå¥
é¢ãæãã¯å±€ã«äºè£ãçããçã®çŸè±¡ãåŒèµ·ãå
ã¡ã§ãã€ãããã®çŸè±¡ã¯ãæ®ã«æ¯æäœãéåžžãé»
ååçåã®éã«æŒããŠäœ¿çšãããŠãããã©ã ç¶æ¯
æäœã®å Žåã«å€ãèµ·ãçãçµæçå®å®æ§ã®ç¹ã«æŒ
ããŠè§£æ±ºãããå¯ãç¹ãããã åŸã€ãŠïœâSiææãã®ãã®ã®ç¹æ§æ¹è¯ãèšãã
ãäžæ¹ã§å å°é»éšæãèšèšããéã«ãäžèšããæ§
ãªåé¡ã®ç·ãŠã解決ãããæ§ã«å·¥å€«ãããå¿ èŠã
ããã æ¬çºæã¯äžèšã®è«žç¹ã«éã¿æããããã®ã§ãïœ
âSiã«å°±ãŠé»ååççšå圢æéšæãåºäœæ®åè£
眮ãèªåè£ çœ®çã«äœ¿çšãããå å°é»éšæãšããŠã®
é©çšæ§ãšãã®å¿çšæ§ãšãã芳ç¹ããç·æ¬çã«éæ
ç 究æ€èšãç¶ããçµæãã·ãªã³ã³ååãæ¯äœãš
ããæ°ŽçŽ ååïŒïŒšïŒåã¯ããã²ã³åå(X)ã®ããã
ãäžæ¹ãå°ãªããšãå«æããã¢ã¢ã«ãã¢ã¹ææã
æè¬æ°ŽçŽ åã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ãããã²ã³åã¢
ã¢ã«ãã¢ã¹ã·ãªã³ã³ãæãã¯ããã²ã³å«ææ°ŽçŽ å
ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ã以åŸããçã®ç·ç§°çè¡šèš
ãšããŠãïœâSiïŒïŒšïŒïŒžïŒãã䜿çšãããããæ§æ
ãããå å°é»æ§ã瀺ãéæ¶è³ªå±€ãæããå å°é»éš
æã®æ§æã以åŸã«èª¬æãããæ§ãªç¹å®åã®äžã«èš
èšãããŠäœæãããå å°é»éšæã¯å®çšäžèããåª
ããç¹æ§ã瀺ãã°ããã§ãªããåŸæ¥ã®å å°é»éšæ
ãšèŒã¹ãŠã¿ãŠãããããç¹ã«ãããŠåé§ããŠãã
ããšãæ®ã«é»ååççšã®å å°é»éšæãšããŠèãã
åªããç¹æ§ãæããŠããããšåã³é·æ³¢é·åŽã«æŒã
ãåžåã¹ãã¯ãã«ç¹æ§ã«åªããŠããããšãèŠåºã
ãç¹ã«åºããŠããã æ¬çºæã¯é»æ°çãå åŠçãå å°é»çç¹æ§ãåžžæ
å®å®ããŠããŠãæ®ãã©äœ¿çšç°å¢ã«å¶éãåããªã
å šç°å¢åã§ãããé·æ³¢é·åŽã®å æ床ç¹æ§ã«åªãã
ãšå ±ã«èå ç²åŽã«èããé·ããç¹°è¿ã䜿çšã«éã
ãŠãå£åçŸè±¡ãèµ·ãããæ®çé»äœãå šãåã¯æ®ã
ã©èŠ³æž¬ãããªãå å°é»éšæãæäŸããããšãäž»ã
ãç®çãšããã æ¬çºæã®å¥ã®ç®çã¯ãå šå¯èŠå åã«æŒããŠå æ
床ãé«ããæ®ã«å å°äœã¬ãŒã¶ãšã®ãããã³ã°ã«åª
ããäžã€å å¿çã®éãå å°é»éšæãæäŸããããš
ã§ããã æ¬çºæã®ä»ã®ç®çã¯ãæ¯æäœäžã«èšèšãããã
å±€ãšæ¯æäœãšã®éãç©å±€ãããå±€ã®åå±€éã«æŒã
ãå¯çæ§ã«åªããæ§é é åçã«ç·»å¯ã§å®å®çã§ã
ããå±€å質ã®é«ãå å°é»éšæãæäŸããããšã§ã
ãã æ¬çºæã®ä»ã®ç®çã¯ãé»ååççšã®å圢æéšæ
ãšããŠé©çšãããå Žåããéåžžã®é»ååçæ³ã極
ããŠæå¹ã«é©çšããåŸãçšåºŠã«ãéé»å圢æã®çº
ã®åž¯é»åŠçã®éã®é»è·ä¿æèœãå åãããäžã€å€
湿é°å²æ°äžã§ããã®ç¹æ§ã®äœäžãæ®ãã©èŠ³æž¬ãã
ãªãåªããé»ååçç¹æ§ãæããå å°é»éšæãæ
äŸããããšã§ããã æ¬çºæã®æŽã«ä»ã®ç®çã¯ãæ¿åºŠãé«ããããŒã
ããŒã³ãé®®æã«åºãŠäžã€è§£å床ã®é«ããé«å質ç»
åãåŸãäºã容æã«åºæ¥ãé»ååççšã®å å°é»éš
æãæäŸããããšã§ããã æ¬çºæã®æŽã«ããïŒã€ã®ç®çã¯ãé«å æ床æ§ã
é«SNæ¯ç¹æ§åã³æ¯æäœãšã®éã«è¯å¥œãªé»æ°çæ¥
觊æ§ãæããå å°é»éšæãæäŸããããšã§ãã
ãã æ¬çºæã®å å°é»éšæã¯ãå å°é»éšæçšã®æ¯æäœ
ãšã該æ¯æäœäžã«ãã·ãªã³ã³ååãšã²ã«ãããŠã
ååãšãå«ãéæ¶è³ªææã§æ§æãããã第ïŒã®å±€
é åãšã·ãªã³ã³ååãå«ãéæ¶è³ªææã§æ§æã
ããå å°é»æ§ã瀺ã第ïŒã®å±€é åãšãåèšæ¯æäœ
åŽããé ã«èšããããå±€æ§æã®éæ¶è³ªå±€ãšãæ
ããåèšéæ¶è³ªå±€äžã«ã¯é žçŽ ååãåèšç¬¬ïŒã®å±€
é ååŽã«å±€åæ¹åã«é£ç¶çã«æžå°ããååžç¶æ ã§
å«æãããŠããããšãç¹åŸŽãšããã äžèšããæ§ãªå±€æ§æãåãæ§ã«ããŠèšèšããã
æ¬çºæã®å å°é»éšæã¯ãåèšããè«žåé¡ã®ç·ãŠã
解決ãåŸã極ããŠåªããé»æ°çãå åŠçãå å°é»
çç¹æ§ãèå§æ§åã³äœ¿çšç°å¢ç¹æ§ã瀺ãã æ®ã«ãé»ååççšå圢æéšæãšããŠé©çšããã
å Žåã«ã¯ãç»å圢æãžã®æ®çé»äœåœ±ã®é¿ãå šããª
ãããã®é»æ°çç¹æ§ãå®å®ããŠããé«æ床ã§ãé«
SNæ¯ãæãããã®ã§ãã€ãŠãèå ç²åŽãç¹°è¿ã
䜿çšç¹æ§ã«é·ããæ¿åºŠãé«ããããŒãããŒã³ãé®®
æã«åºãŠãäžã€è§£å床ã®é«ããé«å質ã®ç»åãå®
å®ããŠç¹°è¿ãåŸãããšãã§ããã åãæ¬çºæã®å å°é»éšæã¯æ¯æäœäžã«åœ¢æãã
ãéæ¶è³ªå±€ããå±€èªäœã匷éã§ãã€ãŠãäžã€æ¯æ
äœãšã®å¯çæ§ã«èããåªããŠãããé«éã§é·æé
é£ç¶çã«ç¹°è¿ã䜿çšããããšãã§ããã æŽã«ãæ¬çºæã®å å°é»éšæã¯ãå šå¯èŠå åã«æŒ
ããŠå æ床ãé«ããæ®ã«åå°äœã¬ãŒã¶ãšã®ããã
ã³ã°ã«åªããäžã€å å¿çãéãã 以äžãå³é¢ã«åŸã€ãŠãæ¬çºæã®å å°é»éšæã«å°±
ãŠè©³çŽ°ã«èª¬æããã 第ïŒå³ã¯ãæ¬çºæã®ç¬¬ïŒã®å®æœæ æ§äŸã®å å°é»
éšæã®å±€æ§æã説æããããã«æš¡åŒçã«ç€ºããæš¡
åŒçæ§æå³ã§ããã 第ïŒå³ã«ç€ºãå å°é»éšæïŒïŒïŒã¯ãå å°é»éšæ
çšãšããŠã®æ¯æäœïŒïŒïŒã®äžã«ãéæ¶è³ªå±€ïŒïŒïŒ
ãæãã該éæ¶è³ªå±€ïŒïŒïŒã¯èªç±è¡šé¢ïŒïŒïŒãäž
æ¹ã®ç«¯é¢ã«æããŠããã éæ¶è³ªå±€ïŒïŒïŒã¯ãæ¯æäœïŒïŒïŒåŽããã²ã«ã
ããŠã ååãå«æããïœâSiïŒïŒšïŒïŒžïŒïŒä»¥åŸãïœ
âSiGeïŒïŒšïŒïŒžïŒããšç¥èšããïŒã§æ§æããã第
ïŒã®å±€é å(G)ïŒïŒïŒãšïœâSiïŒïŒšïŒïŒžïŒã§æ§æã
ããå å°é»æ§ãæãã第ïŒã®å±€é å(S)ïŒïŒïŒãšã
é ã«ç©å±€ãããå±€æ§é ãæããã 第ïŒã®å±€é å(G)ïŒïŒïŒäžã«å«æãããã²ã«ãã
ãŠã ååã¯ã該第ïŒã®å±€é å(G)ïŒïŒïŒã®å±€åæ¹å
åã³æ¯æäœïŒïŒïŒã®è¡šé¢ãšå¹³è¡ãªé¢å æ¹åã«é£ç¶
çã§ãã€ãŠäžã€åäžã«ååžããç¶æ ãšãªãæ§ã«å
èšç¬¬ïŒã®å±€é å(G)ïŒïŒïŒäžã«å«æãããã æ¬çºæã«æŒããŠã¯ã第äžã®å±€é å(G)äžã«èšãã
ãã第ïŒã®å±€é å(G)äžã«ã¯ãã²ã«ãããŠã ååã¯
å«æãããŠãããããã®æ§ãªå±€æ§é ã«éæ¶è³ªå±€ã
圢æããããšã«ãã€ãŠå¯èŠå é åãå«ããæ¯èŒç
çæ³¢é·ããæ¯èŒçé·æ³¢é·è¿ã®å šé åã®æ³¢é·ã®å ã«
察ããŠå æ床ãåªããŠããå å°é»éšæãšãåŸãã
ã®ã§ããã åã第ïŒã®å±€é åäžã«æŒããã²ã«ãããŠã åå
ã®ååžç¶æ ã¯ãå šå±€é åã«ã²ã«ãããŠã ååãé£
ç¶çã«ååžããŠããã®ã§ç¬¬ïŒã®å±€é å(G)ãšç¬¬ïŒã®
å±€é å(S)ãšã®éã«æŒãã芪åæ§ã«åªããåå°äœã¬
ãŒã¶çã䜿çšããå Žåã®ã第ïŒã®å±€é å(S)ã§ã¯æ®
ãã©åžåãåããªãé·æ³¢é·åŽã®å ã第ïŒã®å±€é å
(G)ã«æŒããŠãå®è³ªçã«å®å šã«åžåããããšãåº
æ¥ãæ¯æäœé¢ããã®åå°ã«ããå¹²æžãé²æ¢ããã
ãšãåºæ¥ãã åãæ¬çºæã®å å°é»éšæã«æŒããŠã¯ã第ïŒã®å±€
é åãš(G)第ïŒã®å±€é å(S)ãšãæ§æããéæ¶è³ªææ
ã®å€«ã ãã·ãªã³ã³ååãšããå ±éã®æ§æèŠçŽ ãæ
ããŠããã®ã§ãç©å±€çé¢ã«æŒããŠååŠçãªå®å®æ§
ã®ç¢ºä¿ãå åæãããŠããã æ¬çºæã«ãããŠã第ïŒã®å±€é å(G)äžã«å«æãã
ãã²ã«ãããŠã ååã®å«æéãšããŠã¯ãæ¬çºæã®
ç®çãå¹æçã«éæãããæ§ã«ææã«åŸã€ãŠé©å®
決ããããããéåžžã¯ïŒã9.5Ã105atomic ppmã
奜ãŸããã¯100ãïŒÃ105atomic ppmãæé©ã«
ã¯ã500ãïŒÃ105atomic ppmãšãããã®ãæãŸ
ãããã®ã§ããã æ¬çºæã«æŒããŠç¬¬ïŒã®å±€é å(G)ãšç¬¬ïŒã®å±€é å
(S)ãšã®å±€åã¯ãæ¬çºæã®ç®çãå¹æçã«éæãã
ãçºã®éèŠãªå åã®ïŒã€ã§ããã®ã§åœ¢æãããå
å°é»éšæã«ææã®ç¹æ§ãå åäžããããæ§ã«ãå
å°é»éšæã®èšèšã®éã«å åãªã泚æãæãããå¿
èŠãããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(G)ã®å±€åTBã¯ã
éåžžã®å Žåã30â«ã50ÎŒã奜ãŸããã¯ã40â«ã
40ÎŒãæé©ã«ã¯ã50â«ã30ÎŒãšãããã®ãæãŸã
ãã åã第ïŒã®å±€é å(S)ã®å±€åã¯ãéåžžã®å Žåã
0.5ã90ÎŒã奜ãŸããã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒ
ãšãããã®ãæãŸããã 第ïŒã®å±€é å(G)ã®å±€åTBãšç¬¬ïŒã®å±€é å(S)ã®
å±€åã®åïŒTBïŒïŒŽïŒãšããŠã¯ãäž¡å±€é åã«èŠ
æ±ãããç¹æ§ãšéæ¶è³ªå±€å šäœã«èŠæ±ãããç¹æ§ãš
ã®çžäºéã®ææ©çé¢é£æ§ã«åºããŠãå å°é»éšæã®
å±€èšèšã®éã«ææã«åŸã€ãŠãé©å®æ±ºå®ãããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãäžèšã®ïŒTB
ïŒïŒŽïŒã®æ°å€ç¯å²ãšããŠã¯éåžžã®å ŽåïŒã100ÎŒã
奜é©ã«ã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒãšãããã®
ãæãŸããã æ¬çºæã®ãã奜ãŸããå®æœæ æ§äŸã«æŒããŠã¯ã
äžèšã®å±€åTBåã³å±€åãšããŠã¯ãéåžžã¯TBïŒ
âŠïŒãªãé¢ä¿ãæºè¶³ããéã«ã倫ã ã«å¯ŸããŠé©
å®é©åãªæ°å€ãéžæãããã®ãæãŸããã äžèšã®å Žåã«æŒããå±€åTBåã³å±€åã®æ°å€
ã®éžæã«æŒããŠããã奜ãŸããã¯ãTBïŒïŒŽâŠ0.91
æé©ã«ã¯TBïŒïŒŽâŠ0.8ãªãé¢ä¿ãæºè¶³ãããæ§ã«
å±€åTBåã³å±€åã®å€ã決å®ãããã®ãæãŸã
ããã®ã§ããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(G)äžã«å«æãã
ãã²ã«ãããŠã ååã®å«æéãïŒÃ105atomic
ppm以äžã®å Žåã«ã¯ã第ïŒã®å±€é å(G)ã®å±€åTB
ãšããŠã¯ãæå¯ãèããããã®ãæãŸãã奜ãŸã
ãã¯30Ό以äžããã奜ãŸããã¯25Ό以äžãæé©ã«
ã¯20Ό以äžãšãããã®ãæãŸãããã®ã§ããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãé«å æ床åãš
é«ææµæåãæŽã«ã¯æ¯æäœãšéæ¶è³ªå±€ãšã®éã®å¯
çæ§ã®æ¹è¯ãèšãç®çã®çºã«éæ¶è³ªå±€äžã«ã¯ãé ž
çŽ ååãå«æããããéæ¶è³ªå±€äžã«å«æãããé ž
çŽ ååã¯ãéæ¶è³ªå±€ã®å šå±€é åã«äžåãªãå«æã
ããŠãè¯ãããæãã¯ãéæ¶è³ªå±€ã®äžéšã®å±€é å
ã®ã¿ã«å«æãããŠååšãããŠãè¯ãã åãé žçŽ ååã®ååžç¶æ ã¯ååžæ¿åºŠïŒ£(O)ãéæ¶
質局ã®å±€åæ¹åã«æŒããŠã¯ãåäžã§ãã€ãŠããå
åžæ¿åºŠïŒ£(O)ãå±€åæ¹åã«ã¯äžåäžã§ãã€ãŠãè¯
ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«èšããããé žçŽ å
åã®å«æãããŠããå±€é å(O)ã¯ãå æ床ãšææµæ
ã®åäžãäž»ããç®çãšããå Žåã«ã¯ãéæ¶è³ªå±€ã®
å šå±€é å(O)ãå ããæ§ã«èšããããæ¯æäœãšéæ¶
質局ãšã®éã®å¯çæ§ã®åŒ·åãèšãã®ãäž»ããç®ç
ãšããå Žåã«ã¯ãéæ¶è³ªå±€ã®æ¯æäœåŽç«¯éšå±€é å
ãå ããæ§ã«èšããããã åè ã®å Žåãå±€é å(O)äžã«å«æãããé žçŽ åå
ã®å«æéã¯ãé«å æ床ãç¶æããçºã«æ¯èŒçå°ãª
ããããåŸè ã®å Žåã«ã¯ãæ¯æäœãšã®å¯çæ§ã®åŒ·
åã確å®ã«èšãçºã«æ¯èŒçå€ããããã®ãæãŸã
ãã åãåè ãšåŸè ã®äž¡æ¹ãåæã«éæããç®çã®
çºã«ã¯ãæ¯æäœåŽã«æŒããŠæ¯èŒçé«æ¿åºŠã«ååžã
ããéæ¶è³ªå±€ã®èªç±è¡šé¢åŽã«æŒããŠæ¯èŒçäœæ¿åºŠ
ã«ååžããããæãã¯ãéæ¶è³ªå±€ã®èªç±è¡šé¢åŽã®
è¡šå±€é åã«ã¯ãé žçŽ ååãç©æ¥µçã«ã¯å«æãããª
ãæ§ãªé žçŽ ååã®ååžç¶æ ãå±€é å(O)äžã«åœ¢æã
ãã°è¯ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«èšããããå±€é å
(O)ã«å«æãããé žçŽ ååã®å«æéã¯ãå±€é å(O)èª
äœã«èŠæ±ãããç¹æ§ãæãã¯è©²å±€é å(O)ãæ¯æäœ
ã«çŽã«æ¥è§ŠããŠèšããããå Žåã«ã¯ã該æ¯æäœãš
ã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿çãææ©çé¢é£
æ§ã«æŒããŠãé©å®éžæããããšãåºæ¥ãã åãåèšå±€é å(O)ã«çŽã«æ¥è§ŠããŠä»ã®å±€é åã
èšããããå Žåã«ã¯ã該ä»ã®å±€é åã®ç¹æ§ãã該
ä»ã®å±€é åãšã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿ã
èæ ®ãããŠãé žçŽ ååã®å«æéãé©å®éžæãã
ããå±€é å(O)äžã«å«æãããé žçŽ ååã®éã¯ã圢
æãããå å°é»éšæã«èŠæ±ãããç¹æ§ã«å¿ããŠæ
æã«åŸã€ãŠé©å®æ±ºããããããéåžžã®å Žåã
0.001ã50atomicïŒ ã奜ãŸããã¯ã0.002ã
40atomicïŒ ãæé©ã«ã¯0.003ã30atomicïŒ ãšãã
ãã®ãæãŸãããã®ã§ããã æ¬çºæã«æŒããŠãå±€é å(O)ãéæ¶è³ªå±€ã®å šåã
å ããããæãã¯ãéæ¶è³ªå±€ã®å šåãå ããªããš
ããå±€é å(O)ã®å±€åTOã®éæ¶è³ªå±€ã®å±€åã«å
ããå²åãå åå€ãå Žåã«ã¯ãå±€é å(O)ã«å«æã
ããé žçŽ ååã®å«æéã®äžéã¯ãåèšã®å€ããå
åå°ãªããããã®ãæãŸããã æ¬çºæã®å Žåã«ã¯ãå±€é å(O)ã®å±€åTOãéæ¶
質局ã®å±€åã«å¯ŸããŠå ããå²åãïŒåã®ïŒä»¥äž
ãšãªãæ§ãªå Žåã«ã¯ãå±€é å(O)äžã«å«æãããé ž
çŽ ååã®éã®äžéãšããŠã¯ãéåžžã¯ã30atomic
ïŒ ä»¥äžã奜ãŸããã¯ã20atomic以äžãæé©ã«ã¯
10atomicïŒ ä»¥äžãšãããã®ãæãŸãããã®ã§ã
ãã 第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ã¯ãæ¬çºæã«ãããå å°
é»éšæã®å±€é å(O)äžã«å«æãããé žçŽ ååã®å±€å
æ¹åã®ååžç¶æ ã®å žåçäŸã瀺ãããã 第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ãããŠã暪軞ã¯é žçŽ åå
ã®ååžæ¿åºŠïŒ£ãã瞊軞ã¯ãå±€é å(O)ã®å±€åã瀺
ããtBã¯æ¯æäœåŽã®å±€é å(O)ã®ç«¯é¢ã®äœçœ®ããtT
ã¯æ¯æäœåŽãšã¯å察åŽã®å±€é å(O)ã®ç«¯é¢ã®äœçœ®ã
瀺ããå³ã¡ãé žçŽ ååã®å«æãããå±€é å(O)ã¯tB
åŽããtTåŽã«åã€ãŠå±€åœ¢æããªãããã 第ïŒå³ã«ã¯ãå±€é å(O)äžã«å«æãããé žçŽ åå
ã®å±€åæ¹åã®ååžç¶æ ã®ç¬¬ïŒã®å žåäŸã瀺ãã
ãã 第ïŒå³ã«ç€ºãããäŸã§ã¯ãé žçŽ ååã®å«æãã
ãå±€é å(O)ã圢æãããè¡šé¢ãšè©²å±€é ååã³åèš
第ïŒã®å±€é å(O)ã®è¡šé¢ãšãæ¥ããçé¢äœçœ®tBãã
t1ã®äœçœ®ãŸã§ã¯ãé žçŽ ååã®ååžæ¿åºŠïŒ£ãC1ãªã
äžå®ã®å€ãåãä¹ãé žçŽ ååã圢æãããå±€é å
åã³åèšç¬¬ïŒã®å±€é å(O)ã«å«æãããäœçœ®t1ãã
ã¯æ¿åºŠC2ããçé¢äœçœ®tTã«è³ããŸã§åŸã ã«é£ç¶ç
ã«æžå°ãããŠãããçé¢äœçœ®tTã«ãããŠã¯é žçŽ å
åã®ååžæ¿åºŠïŒ£ã¯C3ãšãããã 第ïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãå«æãããé ž
çŽ ååã®ååžæ¿åºŠïŒ£ã¯äœçœ®tBããäœçœ®tTã«å°ããŸ
ã§æ¿åºŠC4ããåŸã ã«é£ç¶çã«æžå°ããŠäœçœ®tTã«ã
ããŠæ¿åºŠC5ãšãªãæ§ãªååžç¶æ ã圢æããŠããã 第ïŒå³ã®å Žåã«ã¯ãäœçœ®tBããäœçœ®t2ãŸã§ã¯é ž
çŽ ååã®ååžæ¿åºŠïŒ£ã¯æ¿åºŠC6ãšäžå®å€ãšããã
äœçœ®t2ãšäœçœ®tTãšã®éã«ãããŠãåŸã ã«é£ç¶çã«
æžå°ãããäœçœ®tTã«ãããŠãååžæ¿åºŠïŒ£ã¯å®è³ªç
ã«é¶ãšãããŠããïŒããã§å®è³ªçã«é¶ãšã¯æ€åºé
çéæªæºã®å Žåã§ããïŒã 第ïŒå³ã®å Žåã«ã¯ãé žçŽ ååã®ååžæ¿åºŠïŒ£ã¯äœ
眮tBããäœçœ®tTã«å°ããŸã§ãæ¿åºŠC8ããé£ç¶çã«
åŸã ã«æžå°ãããäœçœ®tTã«ãããŠå®è³ªçã«é¶ãšã
ããŠããã 第ïŒå³ã«ç€ºãäŸã«ãããŠã¯ãé žçŽ ååã®ååžæ¿
床ã¯ãäœçœ®tBãšäœçœ®t3ééã«ãããŠã¯ãæ¿åºŠC9
ãšäžå®å€ã§ãããäœçœ®tTã«ãããŠã¯æ¿åºŠC10ãšã
ãããäœçœ®t3ãšäœçœ®tTãšã®éã§ã¯ãååžæ¿åºŠïŒ£ã¯
äžæ¬¡é¢æ°çã«äœçœ®t3ããäœçœ®tTã«è³ããŸã§æžå°ã
ããŠããã 第ïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãååžæ¿åºŠïŒ£ã¯
äœçœ®tBããäœçœ®t4ãŸã§ã¯æ¿åºŠC11ã®äžå®å€ãåãã
äœçœ®t4ããäœçœ®tTãŸã§ã¯æ¿åºŠC12ããæ¿åºŠC13ãŸã§
äžæ¬¡é¢æ°çã«æžå°ããååžç¶æ ãšãããŠããã 第ïŒå³ã«ç€ºãäŸã«ãããŠã¯ãäœçœ®tBããäœçœ®tT
ã«è³ããŸã§ãé žçŽ ååã®ååžæ¿åºŠïŒ£ã¯æ¿åºŠC14ã
ãå®è³ªçã«é¶ã«è³ãæ§ã«äžæ¬¡é¢æ°çã«æžå°ããŠã
ãã 第ïŒå³ã«ãããŠã¯ãäœçœ®tBããäœçœ®t5ã«è³ããŸ
ã§ã¯é žçŽ ååã®ååžæ¿åºŠïŒ£ã¯ãæ¿åºŠC15ããæ¿åºŠ
C10ãŸã§äžæ¬¡é¢æ°çã«æžå°ãããäœçœ®t5ãšäœçœ®tTãš
ã®éã«ãããŠã¯ãæ¿åºŠC16ã®äžå®å€ãšãããäŸã
瀺ãããŠããã 第ïŒïŒå³ã«ç€ºãããäŸã«ãããŠã¯ãé žçŽ ååã®
ååžæ¿åºŠïŒ£ã¯äœçœ®tBã«ãããŠæ¿åºŠC17ã§ãããäœ
眮t6ã«è³ããŸã§ã¯ãã®æ¿åºŠC17ããåãã¯ãã€ã
ããšæžå°ãããt6ã®äœçœ®ä»è¿ã«ãããŠã¯ãæ¥æ¿ã«
æžå°ãããŠäœçœ®t6ã§ã¯æ¿åºŠC13ãšãããã äœçœ®t6ãšäœçœ®t7ãšã®éã«ãããŠã¯ãåãæ¥æ¿ã«
æžå°ãããŠããã®åŸã¯ãç·©ãã«åŸã ã«æžå°ãããŠ
äœçœ®t7ã§æ¿åºŠC19ãšãªããäœçœ®t7ãšäœçœ®t8ãšã®éã§
ã¯ã極ããŠãã€ãããšåŸã ã«æžå°ãããŠäœçœ®t8ã«
ãããŠãæ¿åºŠC20ã«è³ããäœçœ®t8ãšäœçœ®tTã®éã«ã
ããŠã¯ãæ¿åºŠC20ããå®è³ªçã«é¶ã«ãªãæ§ã«å³ã«
瀺ã圢ç¶ã®æ²ç·ã«åŸã€ãŠæžå°ãããŠããã 以äžã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ãããå±€é å(O)äž
ã«å«æãããé žçŽ ååã®å±€åæ¹åã®ååžç¶æ ã®å ž
åäŸã®å¹Ÿã€ãã説æããæ§ã«ãæ¬çºæã«ãããŠ
ã¯ãæ¯æäœåŽã«ãããŠãé žçŽ ååã®ååžæ¿åºŠïŒ£ã®
é«ãéšåãæããçé¢tTåŽã«ãããŠã¯ãåèšååž
æ¿åºŠïŒ£ã¯æ¯æäœåŽã«èŒã¹ãŠå¯æãäœããããéšå
ãæããé žçŽ ååã®ååžç¶æ ãå±€é å(O)ã«èšãã
ããŠããã æ¬çºæã«ãããŠãéæ¶è³ªå±€ãæ§æããé žçŽ åå
ã®å«æãããå±€é å(O)ã¯ãäžèšããæ§ã«æ¯æäœåŽ
ã®æ¹ã«é žçŽ ååãæ¯èŒçé«æ¿åºŠã§å«æãããŠãã
å±åšé å(B)ãæãããã®ãšããŠèšããããã®ãæ
ãŸããããã®å Žåã«ã¯ãæ¯æäœãšéæ¶è³ªå±€ãšã®é
ã®å¯çæ§ãããäžå±€åäžãããããšãåºæ¥ãã äžèšå±åšé å(B)ã¯ã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã«ç€ºã
èšå·ãçšããŠèª¬æããã°ãçé¢äœçœ®tBãã5Ό以å
ã«èšããããã®ãæãŸããã æ¬çºæã«ãããŠã¯ãäžèšå±åšé å(B)ã¯ãçé¢äœ
眮tBãã5ÎŒåãŸã§ã®å šå±€é åïŒLTïŒãšãããå Žå
ãããããåãå±€é åïŒLTïŒã®äžéšãšãããå Ž
åãããã å±åšé åãå±€é åïŒLTïŒã®äžéšãšãããåã¯
å šéšãšãããã¯ã圢æãããéæ¶è³ªå±€ã«èŠæ±ãã
ãç¹æ§ã«åŸã€ãŠé©å®æ±ºããããã å±åšé å(B)ã¯ãã®äžã«å«æãããé žçŽ ååã®å±€
åæ¹åã®ååžç¶æ ãšããŠé žçŽ ååã®ååžæ¿åºŠã®æ
倧å€Cmaxãéåžžã¯500atomic ppm以äžã奜é©ã«
ã¯800atomic ppm以äžãæé©ã«ã¯1000atomic
ppm以äžãšãããæ§ãªååžç¶æ ãšãªãåŸãæ§ã«å±€
圢æãããã®ãæãŸããã å³ã¡ãæ¬çºæã«ãããŠã¯ãé žçŽ ååã®å«æãã
ãå±€é å(O)ã¯ãæ¯æäœåŽããã®å±€åã§5Ό以å ïŒtB
ãã5ÎŒåã®å±€é åïŒã«ååžæ¿åºŠã®æ倧å€Cmaxã
ååšããæ§ã«åœ¢æãããã®ãæãŸããã æ¬çºæã«ãããŠãå¿ èŠã«å¿ããŠéæ¶è³ªå±€ãæ§æ
ãã第ïŒã®å±€é å(G)åã³ç¬¬ïŒã®å±€é å(S)äžã«å«æ
ãããããã²ã³ååãšããŠã¯ãå ·äœçã«ã¯ãã
çŽ ãå¡©çŽ ãèçŽ ããšãŠçŽ ãæããããæ®ã«ãã
çŽ ãå¡©çŽ ã奜é©ãªãã®ãšããŠæããããšãåºæ¥
ãã æ¬çºæã«ãããŠãïœâSiGeïŒïŒšïŒïŒžïŒã§æ§æã
ãã第ïŒã®å±€é å(G)ã圢æããã«ã¯äŸãã°ã°ããŒ
æŸé»æ³ãã¹ããã¿ãªã³ã°æ³ãæãã¯ã€ãªã³ãã¬ãŒ
ãã€ã³ã°æ³çã®æŸé»çŸè±¡ãå©çšããç空å ç©æ³ã«
ãã€ãŠæããããäŸãã°ãã°ããŒæŸé»æ³ã«ãã€
ãŠãïœâSiGeïŒïŒšïŒïŒžïŒã§æ§æããã第ïŒã®å±€é
å(G)ã圢æããã«ã¯ãåºæ¬çã«ã¯ã·ãªã³ã³åå
ïŒSiïŒãäŸçµŠãåŸãSiäŸçµŠçšã®åæã¬ã¹ãšã²ã«ã
ããŠã ååïŒGeïŒãäŸçµŠãåŸãGeäŸçµŠçšã®åæ
ã¬ã¹ãšãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)å°å ¥çšã®åæã¬
ã¹åã¯ïŒåã³ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹
ããå éšãæžå§ã«ãåŸãå ç©å®€å ã«ææã®ã¬ã¹å§
ç¶æ ã§å°å ¥ããŠã該å ç©å®€å ã«ã°ããŒæŸé»ãçèµ·
ãããäºãæå®äœçœ®ã«èšçœ®ãããŠããæå®ã®æ¯æ
äœè¡šé¢äžã«å«æãããã²ã«ãããŠã ååã®ååžæ¿
床ãææã®å€åçæ²ç·ã«åŸã€ãŠå¶åŸ¡ãä¹ãïœâ
SiGeïŒïŒšïŒïŒžïŒãããªãå±€ã圢æãããã°è¯ãã
åãã¹ããã¿ãªã³ã°æ³ã§åœ¢æããå Žåã«ã¯ãäŸã
ã°ArãHeçã®äžæŽ»æ§ã¬ã¹åã¯ããçã®ã¬ã¹ãã
ãŒã¹ãšããæ··åã¬ã¹ã®é°å²æ°äžã§Siã§æ§æããã
ã¿ãŒã²ãããæãã¯è©²ã¿ãŒã²ãããšGeã§æ§æã
ããã¿ãŒã²ããã®äºæã䜿çšããŠåã¯ãSiãšGe
ã®æ··åãããã¿ãŒã²ããã䜿çšããå¿ èŠã«å¿ããŠ
HeãArçã®çšéã¬ã¹ã§çšéãããGeäŸçµŠçšã®å
æã¬ã¹ãå¿ èŠã«å¿ããŠãæ°ŽçŽ åå(H)åã¯ïŒåã³ã
ãã²ã³åå(X)å°å ¥çšã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®
å ç©å®€ã«å°å ¥ããææã®ã¬ã¹ã®ãã©ãºãé°å²æ°ã
圢æãããšå ±ã«ãåèšGeäŸçµŠçšã®åæã¬ã¹ã®ã¬
ã¹æµéãææã®å€åçæ²ç·ã«åŸã€ãŠå¶åŸ¡ãä¹ãå
èšã¿ãŒã²ãããã¹ããã¿ãªã³ã°ããŠããã°è¯ãã ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®å Žåã«ã¯ãäŸãã°å€
çµæ¶ã·ãªã³ã³åã¯åçµæ¶ã·ãªã³ã³ãšå€çµæ¶ã²ã«ã
ããŠã åã¯åçµæ¶ã²ã«ãããŠã ãšãã倫ã èžçºæº
ãšããŠèžçããŒãã«å容ãããã®èžçºæºãæµæå
ç±æ³ãæãã¯ããšã¬ã¯ããã³ããŒã æ³ïŒEBæ³ïŒ
çã«ãã€ãŠå ç±èžçºãããé£ç¿èžçºç©ãææã®ã¬
ã¹ãã©ãºãé°å²æ°äžãééããã以å€ã¯ãã¹ãã
ã¿ãªã³ã°æ³ã®å Žåãšåæ§ã«ããäºã§è¡ãããšãåº
æ¥ãã æ¬çºæã«ãããŠäœ¿çšãããSiäŸçµŠçšã®åæã¬ã¹
ãšæãåŸãç©è³ªãšããŠã¯ãSiH4ãSi2H6ãSi3H8ã
Si4H10çã®ã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸãæ°ŽçŽ åç¡
çŽ ïŒã·ã©ã³é¡ïŒãæå¹ã«äœ¿çšããããã®ãšããŠæ
ããããæ®ã«ãå±€äœæäœæ¥æã®åæ±ãæããSiäŸ
絊å¹çã®è¯ãçã®ç¹ã§SiH4ãSi2H6ã奜ãŸããã
ã®ãšããŠæããããã GeäŸçµŠçšã®åæã¬ã¹ãšæãåŸãç©è³ªãšããŠã¯
GeH4ãGe2H6ãGe3H8ãGe4H10ãGe5H12ã
Ge6H14ãGe7H10ãGe8H18ãGe9H20çã®ã¬ã¹ç¶
æ ã®åã¯ã¬ã¹åãåŸãæ°ŽçŽ åã²ã«ãããŠã ãæå¹
ã«äœ¿çšããããã®ãšããŠæããããæ®ã«ãå±€äœæ
äœæ¥æã®åæ±ãæããGeäŸçµŠå¹çã®è¯ãçã®ç¹
ã§ãGeH4ãGe2H6ãGe3H8ã奜ãŸãããã®ãšã
ãŠæããããã æ¬çºæã«ãããŠäœ¿çšãããããã²ã³ååå°å ¥çš
ã®åæã¬ã¹ãšããŠæå¹ãªã®ã¯ãå€ãã®ããã²ã³å
åç©ãæããããäŸãã°ããã²ã³ã¬ã¹ãããã²ã³
åç©ãããã²ã³éååç©ãããã²ã³ã§çœ®æããã
ã·ã©ã³èªå°äœçã®ã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸãã
ãã²ã³ååç©ã奜ãŸããæããããã åãæŽã«ã¯ãã·ãªã³ã³ååãšããã²ã³ååãšã
æ§æèŠçŽ ãšããã¬ã¹ç¶æ ã®åã¯ã¬ã¹åãåŸããã
ãã²ã³ååãå«ãæ°ŽçŽ åç¡ çŽ ååç©ãæå¹ãªãã®
ãšããŠæ¬çºæã«ãããŠã¯æããããšãåºæ¥ãã æ¬çºæã«ãããŠå¥œé©ã«äœ¿çšãåŸãããã²ã³åå
ç©ãšããŠã¯ãå ·äœçã«ã¯ãããçŽ ãå¡©çŽ ãèçŽ ã
ãšãŠçŽ ã®ããã²ã³ã¬ã¹ãBrFãClFãClF3ã
BrF5ãBrF3ãIF3ãIF7ãIClãIBrçã®ããã²ã³
éååç©ãæããããšãåºæ¥ãã ããã²ã³ååãå«ãç¡ çŽ ååç©ãæè¬ãããã²
ã³ååã§çœ®æãããã·ã©ã³èªå°äœãšããŠã¯ãå ·äœ
çã«ã¯äŸãã°SiF4ãSi2F6ãSiCl4ãSiBr4çã®ã
ãã²ã³åç¡ çŽ ã奜ãŸãããã®ãšããŠæããããšã
åºæ¥ãã ãã®æ§ãªããã²ã³ååãå«ãç¡ çŽ ååç©ãæ¡çš
ããŠã°ããŒæŸé»æ³ã«ãã€ãŠæ¬çºæã®ç¹åŸŽçãªå å°
é»éšæã圢æããå Žåã«ã¯ãGeäŸçµŠçšã®åæã¬
ã¹ãšå ±ã«SiãäŸçµŠãåŸãåæã¬ã¹ãšããŠã®æ°ŽçŽ å
ç¡ çŽ ã¬ã¹ã䜿çšããªããšããææã®æ¯æäœäžã«ã
ãã²ã³ååãå«ãïœâSiGeããæã第ïŒã®å±€é
å(G)ã圢æããäºãåºæ¥ãã ã°ããŒæŸé»æ³ã«åŸã€ãŠãããã²ã³ååãå«ã第
ïŒã®å±€é å(G)ãäœæããå Žåãåºæ¬çã«ã¯ãäŸã
ã°SiäŸçµŠçšã®åæã¬ã¹ãšãªãããã²ã³åç¡ çŽ ãš
GeäŸçµŠçšã®åæã¬ã¹ãšãªãæ°ŽçŽ åã²ã«ãããŠã
ãšArãH2ãHeçã®ã¬ã¹çãæå®ã®æ··åæ¯ãšã¬ã¹
æµéã«ãªãæ§ã«ããŠç¬¬ïŒã®å±€é å(G)ã圢æããå
ç©å®€ã«å°å ¥ããã°ããŒæŸé»ãçèµ·ããŠããçã®ã¬
ã¹ã®ãã©ãºãé°å²æ°ã圢æããããšã«ãã€ãŠãæ
æã®æ¯æäœäžã«ç¬¬ïŒã®å±€é å(G)ã圢æãåŸããã®
ã§ããããæ°ŽçŽ ååã®å°å ¥å²åã®å¶åŸ¡ãäžå±€å®¹æ
ã«ãªãæ§ã«èšãçºã«ããçã®ã¬ã¹ã«æŽã«æ°ŽçŽ ã¬ã¹
åã¯æ°ŽçŽ ååãå«ãç¡ çŽ ååç©ã®ã¬ã¹ãææéæ··
åããŠå±€åœ¢æããŠãè¯ãã åãåã¬ã¹ã¯åç¬çš®ã®ã¿ã§ãªãæå®ã®æ··åæ¯ã§
è€æ°çš®æ··åããŠäœ¿çšããŠãå·®æ¯ããªããã®ã§ã
ãã ã¹ããã¿ãªã³ã°æ³ãã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®
äœãã®å Žåã«ã圢æãããå±€äžã«ããã²ã³ååã
å°å ¥ããã«ã¯ãåèšã®ããã²ã³ååç©åã¯åèšã®
ããã²ã³ååãå«ãç¡ çŽ ååç©ã®ã¬ã¹ãå ç©å®€äž
ã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°å²æ°ã圢æããŠã
ãã°è¯ããã®ã§ããã åãæ°ŽçŽ ååãå°å ¥ããå Žåã«ã¯ãæ°ŽçŽ ååå°
å ¥çšã®åæã¬ã¹ãäŸãã°ãH2ãæãã¯åèšãã
ã·ã©ã³é¡åã¯ïŒåã³æ°ŽçŽ åã²ã«ãããŠã çã®ã¬ã¹
é¡ãã¹ããã¿ãªã³ã°çšã®å ç©å®€äžã«å°å ¥ããŠè©²ã¬
ã¹é¡ã®ãã©ãºãé°å²æ°ã圢æããŠããã°è¯ãã æ¬çºæã«ãããŠã¯ãããã²ã³ååå°å ¥çšã®åæ
ã¬ã¹ãšããŠäžèšãããããã²ã³ååç©æãã¯ãã
ã²ã³ãå«ãç¡ çŽ ååç©ãæå¹ãªãã®ãšããŠäœ¿çšã
ãããã®ã§ãããããã®ä»ã«ãHFãHClã
HBrãHIçã®ããã²ã³åæ°ŽçŽ ãSiH2F2ã
SiH2I2ãSiH2Cl2ãSiTCl3ãSiH2Br2ãSiHBr3ç
ã®ããã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãåã³GeHF3ã
GeH2F2ãGeH3FãGeHCl3ãGeH2Cl2ã
GeH3ClãGeHBr3ãGeH2Br2ãGeH4Brã
GeHI3ãGeH2I2ãGeH3Içã®æ°ŽçŽ åããã²ã³å
ã²ã«ãããŠã ãçã®æ°ŽçŽ ååãæ§æèŠçŽ ã®ïŒã€ãš
ããããã²ã³åç©ãGeF4ãGeCl4ãGeBr4ã
GeI4ãGeF2ãGeCl2ãGeBr2ãGeI2çã®ããã²ã³
åã²ã«ãããŠã ãçã ã®ã¬ã¹ç¶æ ã®æãã¯ã¬ã¹å
ãåŸãç©è³ªãæå¹ãªç¬¬ïŒã®å±€é å(G)圢æçšã®åºçº
ç©è³ªãšããŠæããäºãåºæ¥ãã ããçã®ç©è³ªã®äžæ°ŽçŽ ååãå«ãããã²ã³åç©
ã¯ã第ïŒã®å±€é ååã³åèšç¬¬ïŒã®å±€é å圢æã®
éã«å±€äžã«ããã²ã³ååã®å°å ¥ãšåæã«é»æ°çæ
ãã¯å é»çç¹æ§ã®å¶åŸ¡ã«æ¥µããŠæå¹ãªæ°ŽçŽ ååã
å°å ¥ãããã®ã§ãæ¬çºæã«ãããŠã¯å¥œé©ãªããã²
ã³å°å ¥çšã®åæãšããŠäœ¿çšãããã æ°ŽçŽ ååã第ïŒã®å±€é å(G)äžã«æ§é çã«å°å ¥ã
ãã«ã¯ãäžèšã®ä»ã«H2ãæãã¯SiH4ãSi2H4ã
Si3H6ãSi4H10çã®æ°ŽçŽ åç¡ çŽ ãGeãäŸçµŠããçº
ã®ã²ã«ãããŠã åã¯ã²ã«ãããŠã ååç©ãšãæã
ã¯GeH4ïŒGe2H6ãGe3H6ãG84H10ãGe5H12ã
Ge6H1ãïŒGe7H16ïŒGe3H18ïŒGe9H20çã®æ°ŽçŽ å
ã²ã«ãããŠã ãšSiãäŸçµŠããçºã®ã·ãªã³ã³åã¯ã·
ãªã³ã³ååç©ãšãå ç©å®€äžã«å ±åãããŠæŸé»ãç
èµ·ãããäºã§ãè¡ãäºãåºæ¥ãã æ¬çºæã®å¥œãŸããäŸã«ãããŠã圢æãããéæ¶
質局ãæ§æãã第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ
ååã®éåã¯ããã²ã³ååã®éåã¯æ°ŽçŽ åå
ãšããã²ã³ååã®éã®åïŒïŒšïŒïŒžïŒã¯éåžžã®å Žå
0.01ã40atomicïŒ ã奜é©ã«ã¯0.05ã30atomicïŒ ã
æé©ã«ã¯0.1ã25atomicïŒ ãšãããã®ãæãŸããã 第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ åå(H)å
ã¯ïŒåã³ããã²ã³åå(X)ã®éãå¶åŸ¡ããã«ã¯ãäŸ
ãã°æ¯æäœæž©åºŠåã¯ïŒåã³æ°ŽçŽ åå(H)ãæãã¯ã
ãã²ã³åå(X)ãå«æãããçºã«äœ¿çšãããåºçºç©
質ã®å ç©è£ 眮系å ãžå°å ¥ããéãæŸé»ã åçãå¶
åžããŠããã°è¯ãã æ¬çºæã«æŒããŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§æãã
ã第ïŒã®å±€é åã圢æããã«ã¯åèšãã第ïŒã®å±€
é å(G)圢æçšã®åºçºç©è³ª(I)ã®äžãããGeäŸçµŠçš
ã®åæã¬ã¹ãšãªãåºçºç©è³ªãé€ããåºçºç©è³ªã第
ïŒã®å±€é å(S)圢æçšã®åºçºç©è³ªãã䜿çšããŠã
第ïŒã®å±€é å(G)ã圢æããå Žåãšåæ§ã®æ¹æ³ãšæ¡
件ã«åŸã€ãŠè¡ãããšãåºæ¥ãã å³ã¡ãæ¬çºæã«ãããŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§
æããã第ïŒã®å±€é å(S)ã圢æããã«ã¯äŸãã°ã°
ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ãæãã¯ã€ãªã³ã
ã¬ãŒãã€ã³ã°æ³çã®æŸé»çŸè±¡ãå©çšããç空å ç©
æ³ã«ãã€ãŠæããããäŸãã°ãã°ããŒæŸé»æ³ã«ã
ã€ãŠãïœâSiïŒïŒšïŒïŒžïŒã§æ§æããã第ïŒå±€é å
(S)ã圢æããã«ã¯ãåºæ¬çã«ã¯åèšããã·ãªã³ã³
ååïŒSiïŒãäŸçµŠãåŸãSiäŸçµŠçšã®åæã¬ã¹ãšå ±
ã«ãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)å°å ¥çšã®åã¯ïŒåã³
ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹ããå éšãæžå§
ã«ãåŸãå ç©å®€å ã«å°å ¥ããŠã該å ç©å®€å ã«ã°ã
ãŒæŸé»ãçèµ·ãããäºãæå®äœçœ®ã«èšçœ®ãããŠã
ãæå®ã®æ¯æäœè¡šé¢äžã«ïœâSiïŒïŒšïŒïŒžïŒãããª
ãå±€ã圢æãããã°è¯ããåãã¹ããã¿ãªã³ã°æ³
ã§åœ¢æããå Žåã«ã¯ãäŸãã°ArãHeçã®äžæŽ»æ§
ã¬ã¹åã¯ããçã®ã¬ã¹ãããŒã¹ãšããæ··åã¬ã¹ã®
é°å²æ°äžã§Siã§æ§æãããã¿ãŒã²ãããã¹ããã¿
ãªã³ã°ããéãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³å
å(X)å°å ¥çšã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®å ç©å®€ã«
å°å ¥ããŠããã°ããã æ¬çºæã®å å°é»éšæã«æŒããŠã¯ãã²ã«ãããŠã
ååã®å«æããã第ïŒã®å±€é å(G)ã®äžã«èšãã
ããã²ã«ãããŠã ååã®å«æãããªã第ïŒã®å±€é
å(S)ã«ã¯ãäŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªãå«æããã
ããšã«ããã該局é å(S)ã®äŒå°ç¹æ§ãææã«åŸã€
ãŠä»»æã«å¶åŸ¡ããããšãåºæ¥ãã ãã®æ§ãªç©è³ªãšããŠã¯ãæè¬ãåå°äœåéã§äº
ãããäžçŽç©ãæããããšãåºæ¥ãæ¬çºæã«æŒã
ãŠã¯ã圢æããã第ïŒã®å±€é å(S)ãæ§æããïœâ
SiïŒïŒšïŒïŒžïŒã«å¯ŸããŠãåäŒå°ç¹æ§ãäžãã
åäžçŽç©ãåã³ïœåäŒå°ç¹æ§ãäžããïœåäžçŽç©
ãæããããšãåºæ¥ãã å ·äœçã«ã¯ãåäžçŽç©ãšããŠã¯ãåšæåŸè¡šç¬¬
æã«å±ããååïŒç¬¬æååïŒãäŸãã°ãïŒç¡Œ
çŽ ïŒãAlïŒã¢ã«ãããŠã ïŒãGaïŒã¬ãªãŠã ïŒãInïŒã€
ã³ãžãŠã ïŒãTlïŒã¿ãªãŠã ïŒçããããæ®ã«å¥œé©
ã«çšããããã®ã¯ããGaã§ãããïœåäžçŽç©
ãšããŠã¯ãåšæåŸè¡šç¬¬æã«å±ããååïŒç¬¬æ
ååïŒãäŸãã°ãïŒçïŒãAsïŒç çŽ ïŒãSbïŒã¢ã³ã
ã¢ã³ïŒãBiïŒãã¹ãã¹ïŒçã§ãããæ®ã«å¥œé©ã«çš
ããããã®ã¯ããAsã§ããã æ¬çºæã«æŒããŠã第ïŒã®å±€é å(S)ã«å«æããã
äŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªã®å«æéã¯ã該局é å(S)
ã«èŠæ±ãããäŒå°ç¹æ§ãæãã¯è©²å±€é å(S)ã«çŽã«
æ¥è§ŠããŠèšããããä»ã®å±€é å(S)ã®ç¹æ§ãã該ä»
ã®å±€é å(S)ãšã®æ¥è§Šçé¢ã«æŒããç¹æ§ãšã®é¢ä¿
çãææ©çé¢é£æ§ã«æŒããŠãé©å®éžæããããšã
åºæ¥ãã æ¬çºæã«æŒããŠã第ïŒã®å±€é åå(S)äžã«å«æã
ããäŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªã®å«æéãšããŠã¯ã
éåžžã®å Žåã0.001ã1000atomic ppmã奜é©ã«ã¯
0.05ã500atomic ppmãæé©ã«ã¯0.1ã200atomic
ppmãšãããã®ãæãŸãããã®ã§ããã 第ïŒã®å±€é å(S)äžã«äŒå°ç¹æ§ãå¶åŸ¡ããç©è³ªäŸ
ãã°ç¬¬æååãæãã¯ã第æååãæ§é çã«
å°å ¥ããã«ã¯ã局圢æã®éã«ç¬¬æååå°å ¥çšã®
åºçºç©è³ªãæãã¯ã第æååå°å ¥çšã®åºçºç©è³ª
ãã¬ã¹ç¶æ ã§å ç©å®€äžã«ã第ïŒã®å±€é åã圢æã
ãçºã®ä»ã®åºçºç©è³ªãšå ±ã«å°å ¥ããŠããã°è¯ãã
ãã®æ§ãªç¬¬æååå°å ¥çšã®åºçºç©è³ªãšæãåŸã
ãã®ãšããŠã¯ãåžžæž©åžžå§ã§ã¬ã¹ç¶ã®åã¯ãå°ãªã
ãšã局圢ææ¡ä»¶äžã§å®¹æã«ã¬ã¹åãåŸããã®ãæ¡
çšãããã®ãæãŸããããã®æ§ãªç¬¬æååå°å ¥
çšã®åºçºç©è³ªãšããŠå ·äœçã«ã¯ç¡ŒçŽ ååå°å ¥çšãš
ããŠã¯ãB2H6ãB4H10ãB3H9ãB5H11ãB6H10ã
B6H12ãB6H14çã®æ°ŽçŽ åç¡ŒçŽ ãBF3ãBCl3ã
BBr3ãçã®ããã²ã³åç¡ŒçŽ çãæãããããã
ã®ä»ãAlCl3ãGaCl3ãGaïŒCH3ïŒ3ãInCl3ãTlCl3
çãæããããšãåºæ¥ãã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠãæ¬çºæã«
ãããŠæå¹ã«äœ¿çšãããã®ã¯ãçååå°å ¥çšãšã
ãŠã¯ãPH3ãP2H4çã®æ°ŽçŽ åçãPH4IãPF3ã
PF5ãPCl3ãPCl3ãPBr3ãPBr5ãPI3çã®ããã²
ã³åçãæããããããã®ä»ã(s)H3ã(s)F3ã
A3Cl3ãASBr3ãASF5ãSbH3ãSbF3ãSbF5ã
SbCl3ãSbCl5ãBiH3ãBiCl3ãBiBr3çã第æ
ååå°å ¥çšã®åºçºç©è³ªã®æå¹ãªãã®ãšããŠæãã
ããšãåºæ¥ãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã«é žçŽ ååã®å«æã
ããå±€é å(O)ãèšããã«ã¯ãéæ¶è³ªå±€ã®åœ¢æã®é
ã«é žçŽ ååå°å ¥çšã®åºçºç©è³ªãåèšããéæ¶è³ªå±€
圢æçšã®åºçºç©è³ªãšå ±ã«äœ¿çšããŠã圢æãããå±€
äžã«ãã®éãå¶åŸ¡ãä¹ãå«æããŠããã°è¯ããå±€
é å(O)ã圢æããã®ã«ã°ããŒæŸé»æ³ãçšããå Žå
ã«ã¯ãåèšããéæ¶è³ªå±€åœ¢æçšã®åºçºç©è³ªã®äžã
ãææã«åŸã€ãŠéžæããããã®ã«é žçŽ ååå°å ¥çš
ã®åºçºç©è³ªãå ããããããã®æ§ãªé žçŽ ååå°å ¥
çšã®åºçºç©è³ªãšããŠã¯ãå°ãªããšãé žçŽ ååãæ§
æååãšããã¬ã¹ç¶ã®ç©è³ªåã¯ã¬ã¹åãåŸãç©è³ª
ãã¬ã¹åãããã®ã®äžã®å€§æŠã®ãã®ã䜿çšããåŸ
ãã äŸãã°ã·ãªã³ã³ååïŒSiïŒãæ§æååãšããå
æã¬ã¹ãšãé žçŽ åå(O)ãæ§æååãšããåæã¬ã¹
ãšãå¿ èŠã«å¿ããŠæ°ŽçŽ åå(H)åã¯åã³ããã²ã³å
å(X)ãæ§æååãšããåæã¬ã¹ãšãææã®æ··åæ¯
ã§æ··åããŠäœ¿çšããããåã¯ãã·ãªã³ã³ååSiã
æ§æååãšããåæã¬ã¹ãšãé žçŽ åå(O)åã³æ°ŽçŽ
åå(H)ãæ§æååãšããåæã¬ã¹ãšãããããå
ææã®æ··åæ¯ã§æ··åããããæãã¯ãã·ãªã³ã³å
åïŒSiïŒãæ§æååãšããåæã¬ã¹ãšãã·ãªã³ã³
ååïŒSiïŒãé žçŽ åå(O)åã³æ°ŽçŽ åå(H)ã®ïŒã€ã®
æ§æååãšããåæã¬ã¹ãšãæ··åããŠäœ¿çšããã
ãšãåºæ¥ãã åãå¥ã«ã¯ãã·ãªã³ã³ååïŒSiïŒãšæ°ŽçŽ åå(H)
ãšãæ§æååãšããåæã¬ã¹ã«é žçŽ åå(O)ãæ§æ
ååãšããåæã¬ã¹ãæ··åããŠäœ¿çšããŠãè¯ãã å ·äœçã«ã¯ãäŸãã°é žçŽ ïŒO2ïŒããªãŸã³ïŒO3ïŒã
äžé žåçªçŽ ïŒNOïŒãäºé žåçªçŽ ïŒNO2ïŒãäžäºé ž
åçªçŽ ïŒN2OïŒãäžäºé žåçªçŽ ïŒN2O3ïŒãåäºé ž
åçªçŽ ïŒN2O4ïŒãäºäºé žåçªçŽ ïŒN2O5ïŒãäžé žå
çªçŽ ïŒNO3ïŒãã·ãªã³ã³ååïŒSiïŒãšé žçŽ åå(O)
ãšæ°ŽçŽ åå(H)ãšãæ§æååãšãããäŸãã°ããžã·
ãããµã³ïŒH3SiOSiH3ïŒãããªã·ãããµã³
ïŒH3SiOSiH2OSiH3ïŒçã®äœçŽã·ãããµã³çãæ
ããããšãåºæ¥ãã ã¹ããã¿ãŒãªã³ã°æ³ã«ãã€ãŠãé žçŽ ååãå«æ
ãã第äžã®éæ¶è³ªå±€ïŒïŒ©ïŒã圢æããã«ã¯ãåçµ
æ¶åã¯å€çµæ¶ã®SiãŠãšãŒããŒåã¯SiO2ãŠãšãŒã
ãŒãåã¯SiãšSiO2ãæ··åãããŠå«æãããŠãã
ãŠãšãŒããŒãã¿ãŒã²ãããšããŠãããçãçš®ã ã®
ã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³ã°ããããšã«ãã€ãŠ
è¡ãã°è¯ãã äŸãã°ãSiãŠãšãŒããŒãã¿ãŒã²ãããšããŠäœ¿çš
ããã°ãé žçŽ ååãå¿ èŠã«å¿ããŠæ°ŽçŽ åååã¯ïŒ
åã³ããã²ã³ååãå°å ¥ããçºã®åæã¬ã¹ããå¿
èŠã«å¿ããŠçšéã¬ã¹ã§çšéããŠãã¹ããã¿ãŒçšã®
å ç©å®€äžã«å°å ¥ããããçã®ã¬ã¹ã®ã¬ã¹ãã©ãºã
ã圢æããŠåèšSiãŠãšãŒããŒãã¹ããã¿âãªã³ã°
ããã°è¯ãã åãå¥ã«ã¯ãSiãšSiO2ãšã¯å¥ã ã®ã¿ãŒã²ãã
ãšããŠãåã¯SiãšSiO2ã®æ··åããäžæã®ã¿ãŒã²
ããã䜿çšããããšã«ãã€ãŠãã¹ããã¿ãŒçšã®ã¬
ã¹ãšãšããŠã®ã®çšéã¬ã¹ã®é°å²æ°äžã§åã¯å°ãªã
ãšãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³åå(X)ãæ§æ
ååãšããŠå«æããã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³
ã°ããããšã«ãã€ãŠæããããé žçŽ ååå°å ¥çšã®
åæã¬ã¹ãšããŠã¯ãå è¿°ãããã°ããŒæŸé»ã®äŸã§
瀺ããåæã¬ã¹ã®äžã®é žçŽ ååå°å ¥çšã®åæã¬ã¹
ããã¹ããã¿ãªã³ã°æ³ã®å Žåã«ãæå¹ãªã¬ã¹ãšã
ãŠäœ¿çšããåŸãã æ¬çºæã«æŒããŠãéæ¶è³ªå±€ã®åœ¢æã®éã«ãé žçŽ
ååã®å«æãããå±€é å(O)ãèšããå Žåã該局é
å(O)ã«å«æãããé žçŽ ååã®ååžæ¿åºŠïŒ£(O)ãå±€å
æ¹åã«å€åãããŠææã®å±€åæ¹åã®ååžç¶æ
ïŒdepth profileïŒãæããå±€é å(O)ã圢æããã«
ã¯ãã°ããŒæŸé»ã®å Žåã«ã¯ååžæ¿åºŠïŒ£(O)ãå€åã
ããã¹ãé žçŽ ååå°å ¥çšã®åºçºç©è³ªã®ã¬ã¹ããã
ã®ã¬ã¹æµéãææã®å€åçæ²ç·ã«åŸã€ãŠé©å®å€å
ããä¹ããå ç©å®€å ã«å°å ¥ããããšã«ãã€ãŠæã
ãããäŸãã°æåãããã¯å€éšé§åã¢ãŒã¿çã®é
åžžçšããããŠããäœããã®æ¹æ³ã«ãããã¬ã¹æµè·¯
ç³»ã®éäžã«èšããããæå®ã®ããŒãã«ãã«ãã®é
å£ã挞次å€åãããæäœãè¡ãªãã°è¯ãããã®ãš
ããæµéã®å€åçã¯ç·åã§ããå¿ èŠã¯ãªãäŸãã°
ãã€ã³ã³çãçšããŠããããããèšèšãããå€å
çæ²ç·ã«åŸã€ãŠæµéãå¶åŸ¡ããææã®å«æçæ²ç·
ãåŸãããšãã§ããã å±€é å(O)ãã¹ããã¿ãŒãªã³ã°æ³ã«ãã€ãŠåœ¢æã
ãå Žåãé žçŽ ååã®å±€åæ¹åã®ååžæ¿åºŠïŒ£(O)ãå±€
åæ¹åã§å€åãããŠãé žçŽ ååã®å±€åæ¹åã®ææ
ã®ååžç¶æ ïŒdepth profileïŒã圢æããã«ã¯ã
第äžã«ã¯ãã°ããŒæŸé»æ³ã«ããå Žåãšåæ§ã«ãé ž
çŽ ååå°å ¥çšã®åºçºç©è³ªãã¬ã¹ç¶æ ã§äœ¿çšãã該
ã¬ã¹ãå ç©å®€äžãžå°å ¥ããéã®ã¬ã¹æµéãææã«
åŸã€ãŠé©å®å€åãããããšã«ãã€ãŠæãããã 第äºã«ã¯ãã¹ããã¿ãŒãªã³ã°çšã®ã¿ãŒã²ãã
ããäŸãã°ãSiãšSiO2ãšã®æ··åãããã¿ãŒã²ã
ãã䜿çšããã®ã§ããã°ãSiãšSiO2ãšã®æ··åæ¯
ããã¿ãŒã²ããã®å±€åæ¹åã«æŒããŠãäºãå€åã
ããŠããããšã«ãã€ãŠæãããã æ¬çºæã«æŒããŠã圢æãããéæ¶è³ªå±€ãæ§æã
ã第ïŒã®å±€é åäžã«å«æãããæ°ŽçŽ åå(H)ã®é
åã¯ããã²ã³åå(X)ã®éåã¯æ°ŽçŽ ååãšããã²ã³
ååã®éã®åïŒïŒšïŒïŒžïŒã¯ãéåžžã®å ŽåïŒã
40atomicïŒ ã奜é©ã«ã¯ïŒã30atomicïŒ ãæé©ã«
ã¯ïŒã25atomicïŒ ãšãããã®ãæãŸããã æ¬çºæã«ãããŠäœ¿çšãããæ¯æäœãšããŠã¯ãå°
é»æ§ã§ãé»æ°çµ¶çžæ§ã§ãã€ãŠãè¯ããå°é»æ§æ¯æ
äœãšããŠã¯ãäŸãã°ãNiCrãã¹ãã³ã¬ã¹ãAlã
CrãMoãAuãNbãTaããTiãPtãPdçã®
éå±åã¯ããçã®åéãæããããã é»æ°çµ¶çžæ§æ¯æäœãšããŠã¯ãããªãšã¹ãã«ãã
ãªãšãã¬ã³ãããªã«ãŒãããŒããã»ã«ããŒã«ã¢ã»
ããŒããããªãããã¬ã³ãããªå¡©åããã«ãããª
å¡©åãããªãã³ãããªã¹ãã¬ã³ãããªã¢ããçã®
åææš¹èã®ãã€ã«ã åã¯ã·ãŒããã¬ã©ã¹ãã»ã©ã
ãã¯ãçŽçãé垞䜿çšããããããçã®é»æ°çµ¶çž
æ§æ¯æäœã¯ã奜é©ã«ã¯å°ãªããšããã®äžæ¹ã®è¡šé¢
ãå°é»åŠçããã該å°é»åŠçãããè¡šé¢åŽã«ä»ã®
å±€ãèšããããã®ãæãŸããã äŸãã°ãã¬ã©ã¹ã§ããã°ããã®è¡šé¢ã«ãNiCrã
AlãCrãMoãAuãIrãNbãTaããTiãPtã
PdãIn2O3ãSnO2ãITOïŒIn2O3ïŒSnO2ïŒçãã
æãèèãèšããããšã«ãã€ãŠå°é»æ§ãä»äžã
ããæãã¯ããªãšã¹ãã«ãã€ã«ã çã®åææš¹èã
ã€ã«ã ã§ããã°ãNiCrãArãAgãPbãZnã
NiãAuãCrãMoãIrãNbãTaããTiãPt
çã®éå±ã®èèãç空èžçãé»åããŒã èžçãã¹
ããã¿ãªã³ã°çã§ãã®è¡šé¢ã«èšããåã¯åèšéå±
ã§ãã®è¡šé¢ãã©ãããŒãåŠçããŠããã®è¡šé¢ã«å°
é»æ§ãä»äžããããæ¯æäœã®åœ¢ç¶ãšããŠã¯ãåç
ç¶ããã«ãç¶ãæ¿ç¶çä»»æã®åœ¢ç¶ãšãåŸãææã«
ãã€ãŠããã®åœ¢ç¶ã¯æ±ºå®ãããããäŸãã°ã第ïŒ
å³ã®å å°é»éšæïŒïŒïŒãé»ååççšå圢æéšæãš
ããŠäœ¿çšããã®ã§ããã°é£ç¶é«éè€åã®å Žåã«
ã¯ãç¡ç«¯ãã«ãç¶åã¯åçç¶ãšããã®ãæãŸã
ããæ¯æäœã®åãã¯ãææéãã®å å°é»éšæã圢
æãããæ§ã«é©å®æ±ºå®ãããããå å°é»éšæãšã
ãŠå¯ææ§ãèŠæ±ãããå Žåã«ã¯ãæ¯æäœãšããŠã®
æ©èœãå åçºæ®ãããç¯å²å ã§ããã°å¯èœãªéã
èãããããèä¹ãããã®æ§ãªå Žåæ¯æäœã®è£œé
äžåã³åæ±ãäžãæ©æ¢°ç匷床çã®ç¹ãããéåžž
ã¯ã10Ό以äžãšãããã 次ã«æ¬çºæã®å å°é»éšæã®è£œé æ¹æ³ã®äžäŸã®æŠ
ç¥ã«ã€ããŠèª¬æããã 第ïŒïŒå³ã«å å°é»éšæã®è£œé è£ çœ®ã®äžäŸã瀺
ãã å³äžã®1102ã1106ã®ã¬ã¹ãã³ãã«ã¯ãæ¬çºæã®
å å°é»éšæã圢æããããã®åæã¬ã¹ãå¯å°ãã
ãŠããããã®ïŒäŸãšããŠããšãã°1102ã¯ãHeã§
çšéãããSiH4ã¬ã¹ïŒçŽåºŠ99.999ïŒ ã以äž
SiH4ïŒHeãšç¥ããïŒãã³ãã1103ã¯Heã§çšéã
ããGeH4ã¬ã¹ïŒçŽåºŠ99.999ïŒ ã以äžGeH4ïŒHe
ãšç¥ããïŒãã³ãã1104ã¯Heã§çšéãããSiF4ã¬
ã¹ïŒçŽåºŠ99.99ïŒ ã以äžSiF4ïŒHeãšç¥ããïŒãã³
ãã1105ã¯NOã¬ã¹ïŒçŽåºŠ99.999ïŒ ïŒãã³ãã
1106ã¯H2ã¬ã¹ïŒçŽåºŠ99.999ïŒ ïŒãã³ãã§ããã ãããã®ã¬ã¹ãåå¿å®€ïŒïŒïŒã«æµå ¥ãããã«ã¯
ã¬ã¹ãã³ã1102ã1106ã®ãã«ã1122ã1126ããªãŒ
ã¯ãã«ã1135ãéããããŠããããšã確èªãã
åãæµå ¥ãã«ã1112ã1116ãæµåºãã«ã1117ã
1121ãè£å©ãã«ã1132ïŒ1133ãéãããŠããããš
ã確èªããŠãå ã¥ã¡ã€ã³ãã«ã1134ãéããŠåå¿
宀1101ãåã³åã¬ã¹é 管å ãææ°ããã次ã«ç空
èš1136ã®èªã¿ãçŽïŒÃ10-6torrã«ãªã€ãæç¹ã§è£
å©ãã«ã1132ïŒ1133ãæµåºãã«ã1117ã1121ãé
ããã 次ã«ã·ãªã³ããŒç¶åºäœ1137äžã«éæ¶è³ªå±€ã圢æ
ããå Žåã®ïŒäŸãããããšãã¬ã¹ãã³ã1102ãã
SiH4ïŒHeã¬ã¹ãã¬ã¹ãã³ã1103ããGeH4ïŒHe
ã¬ã¹ãã¬ã¹ãã³ã1105ããNOã¬ã¹ããã«ã
1122ïŒ1123ïŒ1124ãéããŠåºå£å§ã²ãŒãž1127ïŒ
1128ïŒ1129ã®å§ãïŒKgïŒcm2ã«èª¿æŽããæµå ¥ãã«ã
1112ïŒ1113ïŒ1114ãåŸã ã«éããŠããã¹ããã³ã³
ãããŒã©1107ïŒ1108ïŒ1109å ã«å€«ã æµå ¥ãããã
åŒãç¶ããŠæµåºãã«ã1117ïŒ1118ïŒ1119ãè£å©ã
ã«ã1132ãåŸã ã«éããŠå€«ã ã®ã¬ã¹ãåå¿å®€1101
ã«æµå ¥ãããããã®ãšãã®SiH4ïŒHeã¬ã¹æµéãš
GeH4ïŒHeã¬ã¹æµéãšNOã¬ã¹æµéãšã®æ¯ãææ
ã®å€ã«ãªãããã«æµåºãã«ã1117ïŒ1118ïŒ1119ã
調æŽããåãåå¿å®€1101å ã®å§åãææã®å€ã«ãª
ãããã«ç空èš1136ã®èªã¿ãèŠãªããã¡ã€ã³ãã«
ã1134ã®éå£ã調æŽããããããŠåºäœ1137ã®æž©åºŠ
ãå ç±ããŒã¿ãŒ1138ã«ãã50ã400âã®ç¯å²ã®æž©
床ã«èšå®ãããŠããããšã確èªãããåŸé»æº1140
ãææã®é»åã«èšå®ããŠåå¿å®€1101å ã«ã°ããŒæŸ
é»ãçèµ·ããæææéã°ããŒæŸé»ãç¶æããŠãæ
æå±€åã«ãåºäœ1137äžã«ç¬¬ïŒã®å±€é å(G)ã圢æã
ããææå±€åã«ç¬¬ïŒã®å±€é å(G)ã圢æããã段é
ã«æŒããŠãæµåºãã«ã1118ãå®å šã«éããããšã
åã³å¿ èŠã«å¿ããŠæŸé»æ¡ä»¶ãå€ãã以å€ã¯ãåæ§
ãªæ¡ä»¶ãšæé ã«åŸã€ãŠæææéã°ããŒæŸé»ãç¶æ
ããããšã§ã第ïŒã®å±€é åäžã«ã²ã«ãããŠã å
åã®å®è³ªçã«å«æãããªã第ïŒã®å±€é å(S)ã圢æ
ããããšãåºæ¥ãã 第ïŒã®å±€é å(S)äžã«äŒå°æ§ãæ¯é ããç©è³ªãå«
æãããã«ã¯ç¬¬ïŒã®å±€é å(S)ã®åœ¢æã®éã«äŸã
ã°ãB2H6ãPH3çã®ã¬ã¹ãå ç©å®€1101ã®äžã«å°
å ¥ããã¬ã¹ã«å ããŠããã°è¯ãã 局圢æãè¡ã€ãŠããéã¯å±€åœ¢æã®åäžåãèšã
ããåºäœ1137ã¯ã¢ãŒã¿1139ã«ããäžå®é床ã§å転
ãããŠããã®ãæãŸããã 以äžå®æœäŸåã³åèäŸã«ã€ããŠèª¬æããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ãããã·ãªã³ããŒ
ç¶ã®Alåºäœäžã«ç¬¬ïŒè¡šã«ç€ºãæ¡ä»¶ã§å±€åœ¢æãè¡
ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.3secéã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ããå åã¯ã¿ã³ã°ã¹ãã³ã©
ã³ãå æºãçšãã2lux.secã®å éãééåã®ãã¹
ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãŒãå«ãïŒãå圢æéšæè¡šé¢ãã«ã¹ã±ãŒã
ããããšã«ãã€ãŠãå圢æéšæè¡šé¢äžã«è¯å¥œãªã
ããŒç»åãåŸããå圢æéšæäžã®ãããŒç»åãã
5.0KVã®ã³ãã垯é»ã§è»¢åçŽäžã«è»¢åããæã
解ååã«åªããé調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®
ç»åãåŸãããã å®æœäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ããã第ïŒè¡šã«ç€º
ãæ¡ä»¶ã«ãã以å€ã¯åèäŸïŒãšåæ§ã«ããŠã局圢
æãè¡ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæã«å°±ããŠåž¯é»æ¥µæ§
ãšçŸåå€ã®è·é»æ¥µæ§ã®å€«ã ãåèäŸïŒãšå察ã«ã
ã以å€ã¯åèäŸïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽ
äžã«ç»åã圢æãããšãã極ããŠé®®æãªç»è³ªãåŸ
ãããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ããã第ïŒè¡šã«ç€º
ãæ¡ä»¶ã«ãã以å€ã¯åèäŸïŒãšåæ§ã«ããŠã局圢
æãè¡ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæã«å°±ããŠãåèäŸ
ïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢æ
ãããšãã極ããŠé®®æãªç»è³ªãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠãGeH4ïŒHeã¬ã¹ãšSiH4ïŒ
Heã¬ã¹ã®ã¬ã¹æµéæ¯ãå€ããŠç¬¬ïŒå±€äžã«å«æã
ããã²ã«ãããŠã ååã®å«æéã第ïŒè¡šã«ç€ºãæ§
ã«å€ãã以å€ã¯ãåèäŸïŒãšåæ§ã«ããŠé»ååç
çšå圢æéšæã倫ã äœæããã ããããŠåŸãããå圢æéšæã«å°±ããŠãåèäŸ
ïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢æ
ãããšãã第ïŒè¡šã«ç€ºãçµæãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠã第ïŒå±€ã®å±€åã第ïŒè¡šã«ç€º
ãããã«å€ãã以å€ã¯ãåèäŸïŒãšåæ§ã«ããŠå
é»ååççšå圢æéšæãäœæããã ããããŠåŸãããåå圢æéšæã«å°±ããŠãåè
äŸïŒãšåæ§ã®æ¡ä»¶åã³æé ã§è»¢åçŽäžã«ç»åã圢
æãããšãã第ïŒè¡šã«ç€ºãçµæãåŸãããã åèäŸ ïŒ ç¬¬ïŒïŒå³ã«ç€ºãã補é è£ çœ®ã«ãããã·ãªã³ããŒ
ç¶ã®Alåºäœäžã«ç¬¬ïŒè¡šã«ç€ºãæ¡ä»¶ã§å±€åœ¢æãè¡
ã€ãŠé»ååççšå圢æéšæãåŸãã ããããŠåŸãããå圢æéšæãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.3secéã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ããå åã¯ã¿ã³ã°ã¹ãã³ã©
ã³ãå æºãçšãã2lux.secã®å éãééåã®ãã¹
ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãŒãå«ãïŒãå圢æéšæè¡šé¢ãã«ã¹ã±ãŒã
ããããšã«ãã€ãŠãå圢æéšæè¡šé¢äžã«è¯å¥œãªã
ããŒç»åãåŸããå圢æéšæäžã®ãããŒç»åãã
5.0KVã®ã³ãã垯é»ã§è»¢åçŽäžã«è»¢åããæã
解ååã«åªããé調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®
ç»åãåŸãããã åèäŸ ïŒ åèäŸïŒã«æŒããŠå æºãã¿ã³ã°ã¹ãã³ã©ã³ãã®
代ãã«810nmã®GaAsç³»åå°äœã¬ãŒã¶ïŒ10mWïŒ
ãçšããŠãéé»åã®åœ¢æãè¡ã€ã以å€ã¯ãåèäŸ
ïŒãšåæ§ã®ãããŒç»å圢ææ¡ä»¶ã«ããŠãåèäŸïŒ
ãšåæ§ã®æ¡ä»¶ã§äœæããé»ååççšå圢æéšæã«
å°±ããŠãããŒè»¢åç»åã®ç»è³ªè©äŸ¡ãè¡ã€ããšã
ãã解ååã«åªããé調åçŸæ§ã®è¯ãé®®æãªé«å
äœã®ç»åãåŸãããã
ãè¡šã
ãè¡šã
ãè¡šã
ãè¡šã
âïŒåªè¯
âïŒè¯å¥œ
â³ïŒå®çšäžå åã§ãã
âïŒè¯å¥œ
â³ïŒå®çšäžå åã§ãã
ãè¡šã
âïŒåªè¯ âïŒè¯å¥œ
ãè¡šã
以äžã®æ¬çºæã®å®æœäŸåã³åèäŸã«æŒããå
±é
ã®å±€äœææ¡ä»¶ã以äžã«ç€ºãã åºäœæž©åºŠïŒã²ã«ãããŠã ååïŒGeïŒå«æå±€âŠâŠ
çŽ200â ã²ã«ãããŠã ååïŒGeïŒéå«æå±€âŠ
âŠçŽ250â æŸé»åšæ³¢æ°ïŒ13.56MHz åå¿æåå¿å®€å å§ïŒ0.3Torr
ã®å±€äœææ¡ä»¶ã以äžã«ç€ºãã åºäœæž©åºŠïŒã²ã«ãããŠã ååïŒGeïŒå«æå±€âŠâŠ
çŽ200â ã²ã«ãããŠã ååïŒGeïŒéå«æå±€âŠ
âŠçŽ250â æŸé»åšæ³¢æ°ïŒ13.56MHz åå¿æåå¿å®€å å§ïŒ0.3Torr
第ïŒå³ã¯ãæ¬çºæã®å
å°é»éšæã®å±€æ§æã説æ
ããçºã®æš¡åŒçå±€æ§æå³ã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã¯
倫ã éæ¶è³ªäžã®é žçŽ ååã®ååžç¶æ ã説æããçº
ã®èª¬æå³ã第ïŒïŒå³ã¯ãå®æœäŸã«æŒããŠæ¬çºæã®
å å°é»éšæãäœè£œããçºã«äœ¿çšããè£ çœ®ã®æš¡åŒç
説æå³ã§ããã ïŒïŒïŒâŠâŠå å°é»éšæãïŒïŒïŒâŠâŠæ¯æäœãïŒ
ïŒïŒâŠâŠéæ¶è³ªå±€ã
ããçºã®æš¡åŒçå±€æ§æå³ã第ïŒå³ä¹è³ç¬¬ïŒïŒå³ã¯
倫ã éæ¶è³ªäžã®é žçŽ ååã®ååžç¶æ ã説æããçº
ã®èª¬æå³ã第ïŒïŒå³ã¯ãå®æœäŸã«æŒããŠæ¬çºæã®
å å°é»éšæãäœè£œããçºã«äœ¿çšããè£ çœ®ã®æš¡åŒç
説æå³ã§ããã ïŒïŒïŒâŠâŠå å°é»éšæãïŒïŒïŒâŠâŠæ¯æäœãïŒ
ïŒïŒâŠâŠéæ¶è³ªå±€ã
Claims (1)
- ãç¹èš±è«æ±ã®ç¯å²ã ïŒ å å°é»éšæçšã®æ¯æäœãšã該æ¯æäœäžã«ãã·
ãªã³ã³ååãšã²ã«ãããŠã ååãšãå«ãéæ¶è³ªæ
æã§æ§æãããã第ïŒã®å±€é åãšã·ãªã³ã³ååã
å«ãéæ¶è³ªææã§æ§æãããå å°é»æ§ã瀺ã第ïŒ
ã®å±€é åãšãåèšæ¯æäœåŽããé ã«èšããããå±€
æ§æã®éæ¶è³ªå±€ãšãæããåèšéæ¶è³ªå±€äžã«ã¯é ž
çŽ ååãåèšç¬¬ïŒã®å±€é ååŽã«å±€åæ¹åã«é£ç¶ç
ã«æžå°ããååžç¶æ ã§å«æãããŠããããšãç¹åŸŽ
ãšããå å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é ååã³åèšç¬¬ïŒã®å±€é åã®å°
ãªããšãããããäžæ¹ã«æ°ŽçŽ ååãå«æãããŠã
ãç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é ååã³åèšç¬¬ïŒã®å±€é åã®å°
ãªããšãããããäžæ¹ã«ããã²ã³ååãå«æãã
ãŠããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éš
æã ïŒ åèšç¬¬ïŒã®å±€é ååã³åèšç¬¬ïŒã®å±€é åã®å°
ãªããšãããããäžæ¹ã«æ°ŽçŽ ååãšããã²ã³åå
ãå«æãããŠããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®
å å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é åãŸãã¯ç¬¬ïŒã®å±€é åäžã«å«
æãããæ°ŽçŽ ååã®éã0.01ãã40atomicïŒ ã§ã
ãç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é åãŸãã¯ç¬¬ïŒã®å±€é åäžã«å«
æãããããã²ã³ååã®éã0.01ã40atomicïŒ ã§
ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é åãŸãã¯ç¬¬ïŒã®å±€é åäžã«å«
æãããæ°ŽçŽ ååãšããã²ã³ååã®éã®åã0.01
ã40atomicïŒ ã§ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èš
èŒã®å å°é»éšæã ïŒ åèšç¬¬ïŒã®å±€é åäžã«å«æãããã²ã«ãããŠ
ã ååã®éãïŒã9.5Ã105atomic ppmã§ããç¹
èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒãåèšç¬¬ïŒã®å±€é åã®å±€åã30â«ã50ÎŒã§ã
ãç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒïŒ åèšç¬¬ïŒã®å±€é åã®å±€åTBã0.5ã90ÎŒã§
ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒïŒ åèšç¬¬ïŒã®å±€é åãšåèšç¬¬ïŒã®å±€é åã®å±€
åã®åïŒïŒŽïŒTBïŒãïŒã100ÎŒã§ããç¹èš±è«æ±ã®
ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éšæã ïŒïŒ åèšç¬¬ïŒã®å±€é åã®å±€åãšåèšç¬¬ïŒã®å±€
é åã®å±€åTBãšãTBïŒïŒŽâŠïŒãšãããŠããç¹èš±
è«æ±ã®ç¯å²ç¬¬ïŒé ãŸãã¯å第ïŒïŒé ã«èšèŒã®å å°
é»éšæã ïŒïŒ åèšã²ã«ãããŠã ååã®å«æéãïŒÃ
105atomic ppm以äžã§ãã€åèšç¬¬ïŒã®å±€é åã®
å±€åã30Ό以äžã§ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èš
èŒã®å å°é»éšæã ïŒïŒ åèšé žçŽ ååã®å«æéã0.001ã50atomic
ïŒ ã§ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®å å°é»éš
æã ïŒïŒ åèšé žçŽ ååã®ååžæ¿åºŠã®æ倧å€ã
500atomic ppm以äžã§ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒ
ïŒé ã«èšèŒã®å å°é»éšæã
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57053607A JPS58171046A (ja) | 1982-03-31 | 1982-03-31 | å å°é»éšæ |
US06/479,316 US4490450A (en) | 1982-03-31 | 1983-03-28 | Photoconductive member |
DE19833311835 DE3311835A1 (de) | 1982-03-31 | 1983-03-31 | Fotoleitfaehiges aufzeichnungselement |
FR8305341A FR2524661B1 (fr) | 1982-03-31 | 1983-03-31 | Element photoconducteur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57053607A JPS58171046A (ja) | 1982-03-31 | 1982-03-31 | å å°é»éšæ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58171046A JPS58171046A (ja) | 1983-10-07 |
JPH0546536B2 true JPH0546536B2 (ja) | 1993-07-14 |
Family
ID=12947573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57053607A Granted JPS58171046A (ja) | 1982-03-31 | 1982-03-31 | å å°é»éšæ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58171046A (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61205948A (ja) * | 1985-03-08 | 1986-09-12 | Canon Inc | ã¬ãŒã¶ãŒå çšã®å å容éšæ |
-
1982
- 1982-03-31 JP JP57053607A patent/JPS58171046A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58171046A (ja) | 1983-10-07 |