JPH0518471B2 - - Google Patents
Info
- Publication number
- JPH0518471B2 JPH0518471B2 JP60282013A JP28201385A JPH0518471B2 JP H0518471 B2 JPH0518471 B2 JP H0518471B2 JP 60282013 A JP60282013 A JP 60282013A JP 28201385 A JP28201385 A JP 28201385A JP H0518471 B2 JPH0518471 B2 JP H0518471B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- atoms
- gas
- photoconductive element
- support
- 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
- 230000007547 defect Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 146
- 239000007789 gas Substances 0.000 description 74
- 229910021417 amorphous silicon Inorganic materials 0.000 description 35
- 125000004429 atom Chemical group 0.000 description 28
- 238000000034 method Methods 0.000 description 23
- 125000005843 halogen group Chemical group 0.000 description 20
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 18
- -1 polyethylene Polymers 0.000 description 18
- 239000002994 raw material Substances 0.000 description 17
- 238000004544 sputter deposition Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000000151 deposition Methods 0.000 description 12
- 230000008021 deposition Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000002344 surface layer Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000007858 starting material Substances 0.000 description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000470 constituent Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 238000007733 ion plating Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 235000012431 wafers Nutrition 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 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
- 206010034972 Photosensitivity reaction Diseases 0.000 description 3
- 229910052796 boron Inorganic materials 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
- 239000003085 diluting agent Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 150000002366 halogen compounds Chemical class 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000003384 imaging method 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
- 230000036211 photosensitivity Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229930195734 saturated hydrocarbon Natural products 0.000 description 3
- 150000004756 silanes Chemical class 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052990 silicon hydride Inorganic materials 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910020313 ClF Inorganic materials 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical group [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 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
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 125000004437 phosphorous atom Chemical group 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910014264 BrF Inorganic materials 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 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
- 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
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 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
- 230000005540 biological transmission Effects 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 class B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 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
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical class Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 239000012535 impurity 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
- 239000011261 inert gas Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 150000003017 phosphorus Chemical class 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
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical group CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 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
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 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
- G03G5/08214—Silicon-based
- G03G5/08235—Silicon-based comprising three or four silicon-based layers
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Receiving Elements (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
ãçºæã®å±ããæè¡åéã
æ¬çºæã¯ãå
ïŒããã§ã¯åºçŸ©ã®å
ã§ãã€ãŠã玫
å€ç·ãå¯èŠå ç·ãèµ€å€ç·ãç·ãγç·ãªã©ãæå³
ãããïŒã®ãããªé»ç£æ³¢ã«å¯ŸããŠæåæ§ã®ããå
å°é»çŽ åã«é¢ããã ãåŸæ¥æè¡ã®èª¬æã åºäœæ®åè£ çœ®ãæãã¯å圢æåéã«ãããé»å
åççšå圢æçŽ åãåçš¿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«é©åããåžåã¹
ãã¯ãã«ç¹æ§ãæããããšãå å¿çæ§ãéãææ
ã®ææµæå€ãæããããšã䜿çšæã«ãããŠäººäœã«
察ããŠç¡å ¬å®³ã§ããããšãæŽã«ã¯åºäœæ®åè£ çœ®ã«
ãããŠã¯ãæ®åãæå®æéå ã«å®¹æã«åŠçããã
ãšãã§ããããšãªã©ã®ç¹æ§ãèŠæ±ããããæ®ã«ã
äºåæ©ãšããŠãªãã€ã¹ã§äœ¿çšãããé»ååçè£ çœ®
å ã«çµèŸŒãŸããé»ååççšå圢æçŽ åã®å Žåã«
ã¯ãäžèšã®äœ¿çšæã«ãããç¡å ¬å®³æ§ãéèŠãªç¹ã§
ããã ãã®ãããªç¹ã«ç«èããŠæè¿æ³šç®ãããŠããå
å°é»ææã«ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥åŸïœâSiãš
è¡šèšãããïŒããããäŸãã°ãç¬åœå ¬é第2746967
å·å ¬å ±ãå第2855718å·å ¬å ±ã«ã¯é»ååççšå圢
æçŽ åãšããŠã®äœ¿çšããŸãç¬åœå ¬é第2933411å·
å ¬å ±ã«ã¯å é»å€æèªåè£ çœ®ãžã®å¿çšãèšèŒãããŠ
ããã ããããªãããåŸæ¥ã®ïœâSiã§æ§æãããå å
容局ãæããå å°é»çŽ åã¯ãææµæå€ãå æ床ã
å å¿çæ§ãªã©ã®é»æ°çãå åŠçãå å°é»çç¹æ§ã
ããã³äœ¿çšç°å¢ç¹æ§ã®ç¹ãæŽã«ã¯çµæçå®å®æ§ã
ãã³èä¹ æ§ã®ç¹ã«ãããŠãåã ãåã ã«ã¯ç¹æ§ã®
åäžãèšãããŠããããç·åçãªç¹æ§åäžãèšã
äžã§æŽã«æ¹è¯ãããäœå°ãå€ã ååšããã®ãå®æ
ã§ããã äŸãã°ãé»ååççšå圢æçŽ åã«é©çšããå Žå
ã«ãé«å æ床åãé«ææµæåãåæã«èšãããšã
ããšåŸæ¥æ³ã§ã¯ãã®äœ¿çšæã«ãããŠæ®çé»äœãæ®
ãå Žåã床ã 芳枬ããããã®çš®ã®å å°é»çŽ åã¯é·
æéç¹°è¿ã䜿çšãç¶ãããšãç¹°è¿ã䜿çšã«ããç²
åŽã®èç©ãèµ·ã€ãŠãæ®åãçãããããããŽãŒã¹
ãçŸè±¡ãçºããããã«ãªããªã©ã®äžéœåãªç¹ãå°
ãªããªãã€ãã ãŸããïœâSiææã§å å容局ãæ§æããå Žåã«
ã¯ããã®é»æ°çãå å°é»çç¹æ§ã®æ¹è¯ãèšããã
ã«ãæ°ŽçŽ ååæãã¯åŒçŽ ååãå¡©çŽ ååãªã©ã®ã
ãã²ã³ååãããã³é»æ°äŒå°åã®å¶åŸ¡ã®ããã«ç
çŽ ååãçååãªã©ãæãã¯ãã®ä»ã®ç¹æ§æ¹è¯ã®
ããã«ä»ã®ååããåã æ§æååãšããŠå å容局
äžã«å«æããããããããã®æ§æååã®å«æã®ä»
æ¹åŠäœã«ãã€ãŠã¯ã圢æããå±€ã®é»æ°çæãã¯å
å°é»çç¹æ§ãé»æ°çèå§æ§ã«åé¡ãçããå Žåã
ãã€ãã å³ã¡ãäŸãã°ã圢æããå å容局äžã«å ç §å°ã«
ãã€ãŠçºçããããªããã€ãªã¢ã®è©²å±€äžã§ã®å¯¿åœ
ãå åã§ãªãããšããæéšã«ãããæ¯æäœåŽãã
ã®é»è·ã®æ³šå ¥ã®é»æ¢ãå åã§ãªãããšãæãã¯ã
転åçŽã«è»¢åãããç»åã«ä¿ã«ãçœãã±ããšåŒã°
ãããå±æçãªæŸé»ç Žå£çŸè±¡ã«ãããšæãããç»
åæ¬ é¥ããã¯ãªãŒãã³ã°ã«ãã¬ãŒããçšãããšã
ã®æºæŠã«ãããšæããããä¿ã«ãçœã¹ãžããšäºã
ããŠããç»åæ¬ é¥ãçãããããŠããããŸããå€
湿é°å²æ°äžã§äœ¿çšããããæãã¯å€æ¹¿é°å²æ°äžã«
é·æéæŸçœ®ããçŽåŸã«äœ¿çšãããšä¿ã«ããç»åã®
ãã±ãçããå Žåãå°ãªããªãã€ãã 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£ãçãããªã©ã®çŸè±¡ãåŒèµ·ã
ãã¡ã«ãªãããã®çŸè±¡ã¯ãæ®ã«æ¯æäœãéåžžãé»
ååçåéã«ãããŠäœ¿çšãããŠãããã©ã ç¶æ¯æ
äœã®å Žåã«å€ãèµ·ããªã©ãçµæçå®å®æ§ã®ç¹ã«ã
ããŠè§£æ±ºãããã¹ãåé¡ãããã€ãããã åŸã€ãŠïœâSiææãã®ãã®ã®ç¹æ§æ¹è¯ãèšãã
ãäžæ¹ã§å å°é»çŽ åãèšèšããéã«ãäžèšããã
ããªåé¡ã®ç·ãŠã解決ãããããã«å·¥å€«ãããå¿
èŠãããã ãçºæã®ç®çã æ¬çºæã¯ãäžè¿°ã®ããšãïœâSiã§æ§æãããå
å容局ãæããå å°é»çŽ åã«ãããè«žåé¡ã解決
ããããšãç®çãšãããã®ã§ããã å³ã¡ãæ¬çºæã®äž»ããç®çã¯ãé»æ°çãå åŠ
çãå å°é»çç¹æ§ã䜿çšç°å¢ã«æ®ãã©äŸåããã
ãšãªãå®è³ªçã«åžžæå®å®ããŠãããèå ç²åŽã«åª
ããç¹°è¿ã䜿çšã«éããŠãå£åçŸè±¡ãèµ·ãããè
ä¹ æ§ãè湿æ§ã«åªããæ®çé»äœãå šãããŸãã¯æ®
ãã©èŠ³æž¬ãããªããïœâSiã§æ§æãããå å容局
ãæããå å°é»çŽ åãæäŸããããšã«ããã æ¬çºæã®å¥ã®ç®çã¯ãé«å æ床æ§ãé«SNæ¯ç¹
æ§åã³é«é»æ°çèå§æ§ãæãããïœâSiã§æ§æã
ããå å容局ãæããå å°é»çŽ åãæäŸããããš
ã«ããã æ¬çºæã®æŽã«å¥ã®ç®çã¯ãæ¯æäœäžã«èšããã
ãå±€ãšæ¯æäœãšã®éãç©å±€ãããåå±€éã«ããã
å¯çæ§ã«åªããæ§é é åçã«ç·»å¯ã§å®å®çã§ã
ããå±€å質ã®é«ããïœâSiã§æ§æãããå å容局
ãæããå å°é»çŽ åãæäŸããããšã§ããã æ¬çºæã®ä»ã®ç®çã¯ãé»ååççšå圢æçŽ åãš
ããŠé©çšãããå Žåãéé»å圢æã®ããã®åž¯é»åŠ
çã®éã®é»è·ä¿æèœåãå åã§ãããéåžžã®é»å
åçæ³ã極ããŠæå¹ã«é©çšãããåªããé»ååç
ç¹æ§ãæãããïœâSiã§æ§æãããå å容局ãæ
ããå å°é»çŽ åãæäŸããããšã«ããã æ¬çºæã®æŽã«ä»ã®ç®çã¯ãé·æã®äœ¿çšã«ãããŠ
ç»åæ¬ é¥ãç»åã®ãã±ãå šããªããæ¿åºŠãé«ãã
ããŒãããŒã³ãé®®æã«åºãŠãã€è§£å床ã®é«ããé«
å質ç»åãåŸãããšãã§ããïœâSiã§æ§æããã
å å容局ãæããé»ååççšã®å å°é»çŽ åãæäŸ
ããããšã«ããã ãçºæã®æ§æã æ¬çºæã¯äžè¿°ã®ç®çãéæãããã®ã§ãã€ãŠã
é»ååççšå圢æçŽ åãåºäœæ®åè£ çœ®ãèªåè£ çœ®
ãªã©ã«äœ¿çšãããå å°é»çŽ åãšããŠã®ïœâSiã®è£œ
åæç«æ§ãé©çšæ§ãå¿çšæ§ãªã©ã®äºé ãå«ããŠç·
æ¬çã«éæç 究ãç¶ããçµæãã·ãªã³ã³ååãæ¯
äœãšããéæ¶è³ªææã§æ§æãããå å容局ãæã
ãå å°é»çŽ åã®å±€æ§æã以äžã«èšèŒãããããªç¹
å®ã®å±€æ§æã®äžã«èšèšãããŠäœæãããå å°é»çŽ
åããå®çšäžèããåªããç¹æ§ã瀺ãã°ããã§ãª
ããåŸæ¥ã®å å°é»çŽ åãšæ¯èŒããŠã¿ãŠããããã
ç¹ã«ãããŠåé§ããŠãããç¹ã«é»ååççšã®å å°
é»çŽ åãšããŠèããåªããç¹æ§ãæããŠãããšã
ãäºå®ãèŠãåºããããšã«åºã¥ããŠå®æãããã
ãã®ã§ããã å³ã¡ãïœâSiã§æ§æãããå å°é»çŽ åã«ãããŠ
ã¯ãè湿æ§ãé£çµç¹°ãè¿ã䜿çšç¹æ§ãé»æ°èå§
æ§ã䜿çšç°å¢ç¹æ§ãããã³èä¹ æ§çãåäžããã
ç®çã§ãããããä¿è·å±€ãšããŠã®æ©èœãæãããš
åæã«ãèªç±è¡šé¢åŽããã®é»è·ã®æ³šå ¥ãé»æ¢ãã
æ©èœãæããè¡šé¢å±€ãèšããå¿ èŠãããããã®ã
ããªè¡šé¢å±€ã¯ãã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ææã«ççŽ
ååãæ§é çã«å°å ¥ãããããããããççŽ åã¢
ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥äžããïœâSiCããšè¡šèš
ãããããçšããããšã«ããéæã§ããã ãããã該ïœâSiCãããªãè¡šé¢å±€ã圢æãã
ããå Žåãæ¬ é¥å¯åºŠãå°ããç·»å¯ãªïœâSiCèã
圢æãããããšåž¯é»æ§ã¯åäžããããåèšã®è«žç¹
æ§ãåäžãããããšããæ©èœãå¹ççã«éæãåŸ
ãã®ã«å åãªèåãšãªããŸã§ãã®ãããªïœâSiC
èã圢æãããšã局圢æã«æéãããããšåæ
ã«ãæ®çé»äœãçãæããšããåé¡ãããããã
ããæ®çé»äœã®çºçãšããåé¡ãåé¿ããããã«
èåãèãããå Žåã«ã¯ãèä¹ æ§ãªã©ãäœäžãã
ç»åæ¬ é¥ãçããçµæãšãªãã æ¬çºæã¯äžè¿°ã®åé¡ã解決ããããç 究ãç¶ã
ããšãããïœâSiCã§æ§æãããè¡šé¢å±€ãã以äž
ã®ãããªç¹æ§ãæããäžéšé åãšäžéšé åãšãã
ãªãäºå±€æ§æãšããããšã«ãããäžè¿°ã®åé¡ã解
決ãåŸããšããç¥èŠãåŸãã å³ã¡ãæ¬çºæã®å å°é»çŽ åã¯ãæ¯æäœãšã該æ¯
æäœäžã«ã·ãªã³ã³ååãæ¯äœãšãäŒå°æ§ãå¶åŸ¡ã
ãç©è³ªãå«æããéæ¶è³ªææããæ§æããã第äž
ã®å±€ãšãã·ãªã³ã³ååãšæ¯äœãšããéæ¶è³ªææã
ãæ§æããå å°é»æ§ãæãã第äºã®å±€ãšãã·ãªã³
ã³ååãæ¯äœãšãççŽ ååãå«æããéæ¶è³ªææ
ã§æ§æããã第äžã®å±€ãšãç©å±€ãããŠãªãå å容
å±€ãšãããªãå å°é»çŽ åã«ãããŠãåèšç¬¬äžã®å±€
ããæ¬ é¥å¯åºŠãïŒÃ1018cm-3ïŒESRã·ã°ãã«ïŒä»¥
äžã§å±€åã0.05ã0.2ÎŒã§ããäžéšé åãšãæ¬ é¥å¯
床ãïŒÃ1018cm-3ïŒESRã·ã°ãã«ïŒä»¥äžã§äœç©æµ
æãïŒÃ1012Ωã»cm以äžã§ããäžéšé åãšãããª
ãäºå±€æ§æãšããããšãç¹åŸŽãšãããã®ã§ããã æ¬çºæã®å å°é»çŽ åã¯ãè¡šé¢å±€ã§ããåèšç¬¬äž
ã®å±€ã®äžéšé åã®ïœâSiCå±€ã®æ¬ é¥å¯åºŠãäžè¿°ã
ãåŠãæ¯èŒç倧ããããããšã§æ¬ é¥æºäœãä»ããŠ
é»è·ã移åãæããªããããçšåºŠé»è·ã®ç§»åãå¯
èœãšãªãããã®çµæãè¡šé¢ã«äžèŠãªé»è·ãæ®ãã
ãã«çºçããæ®çé»äœãçºçãã«ãããªãããŸ
ããæ®çé»äœã®çºçãé²æ¢ã§ããããšã¯ãè¡šé¢å±€
ã§ãã第äžã®å±€ãåŸæ¥ã®ããã«æ®çé»äœã®é²æ¢ãš
ããç¹ããèãããå¿ èŠããªããªãã®ã§ãèä¹ æ§
ãæèæã®ãã³ããŒã«ãªã©ã«èµ·å ããç»åæ¬ é¥ã®
é€å»ã«ããé«ç»è³ªåãªã©ã®è«žç¹æ§ãåäžãããã®
ã«å åãªèåãšããããšãã§ããã äœããäžéšé åã®ïœâSiCå±€ã®æµæãäœããšè¡š
é¢ã®é»è·ã®æšªæ¹åãžã®ç§»åãªã©ã«èµ·å ããç»åã
ã±ãçããåå ãšãªããããäžéšé åã®ïœâSiC
å±€ã®æµæã¯äžè¿°ããåŠãããçšåºŠé«ãããããäž
æ¹ãäžéšé åã®ïœâSiå±€ã¯äžè¿°ããåŠãæ¬ é¥å¯åºŠ
ãå°ããç·»å¯ãªãã®ãšããããšã«ãã€ãŠãè¡šé¢å±€
ã«å¿ èŠãšãããé»æ°æµææ§ã垯é»èœã®åäžã確ä¿
ãããšãšãã«ã第äžã®å±€ãèšãããã第äºã®å±€ãš
ã®å¯çæ§ãåäžãããããšãã§ããããã®ç¹å ·äœ
çã«ã¯ãäžéšé åãäžè¿°ã®åŠãã®ïœâSiCã§æ§æ
ããããšã«ãã€ãŠãé»è·ãæ¯èŒç移åãã«ããã
ãããšãã§ãããã®ãã垯é»æã«ãããäžèŠãªé»
è·ã®æ³šå ¥ãå¹æçã«é»æ¢ããã垯é»ç¹æ§ãåäžã
ãã æŽã«äžéšé åã®èåã0.05ã20ÎŒãšããããšã«
ãããèªç±è¡šé¢åŽããã®é»è·ã®æ³šå ¥ãé»æ¢ããæ©
èœãå¹ççã«éæãããåæã«æ®çé»äœã®çºçã
é²æ¢ã§ããã ç¹ã«äžè¿°ããåŠããäžéšé åãšäžéšé åãæã
ã第äžã®å±€ãèšããããšã§æ¯æäœäžã«äžè¿°ããåŠ
ãã®ç¹å®ã®ç¬¬äžã®å±€ã第äºã®å±€ãšãé ã«èšããå
å°é»çŽ åã®æããŠãã垯é»ç¹æ§ãé»æ°èå§æ§ãæ
床çã ã®ç¹æ§ãæãªãããšãªããããäžå±€ã®åž¯é»
ç¹æ§ãé»æ°èå§æ§ãæ®çé»äœç¹æ§ãåäžãããã°
ããããåŸæ¥ã®ïœâSiCè¡šé¢å±€ãèšããå Žåã«èŒ
ã¹ãŠãäžè¿°ããããã«è«žç¹æ§ã®äžå±€ã®åäžãã¯ã
ãããå ããŠå å°é»çŽ åãšããŠã®äžå±€ã®èä¹ æ§ã®
åäžãªã©ããéæããããšãã§ããã æŽã«ãæ¬çºæã®å å°é»çŽ åã¯ãäžè¿°ããåŠãã
ç¹å®ã®äžéšé åãšç¹å®ã®äžéšé åãæãã第äžã®
å±€ãè¡šé¢å±€ãšããŠæããããšãããé»è·æ³šå ¥é»æ¢
ãšæ®çé»äœã®é€å»ãèä¹ æ§ã®åäžãšæ®çé»äœã®é€
å»ãç»åæ¬ é¥ã®é€å»ãããŠæ®çé»äœã®é€å»ãéæ
ãããè«žæ§èœåã³è«žç¹æ§ã®æ¥µããŠãã©ã³ã¹ã®ãšã
ããã®ã§ããã 以äžãå³é¢ã«ããæ¬çºæã®å å°é»çŽ åã®å ·äœç
å±€æ§æå 容ã«ã€ããŠãã詳ãã説æããã 第ïŒãïŒå³ã¯æ¬çºæã®å å°é»çŽ åã®å±€æ§æã説
æããããã®æš¡åŒå³ã§ãããåå³ã«ãããŠïŒïŒïŒ
ã¯å å°é»çŽ åãïŒïŒïŒã¯æ¯æäœãïŒïŒïŒã¯ç¬¬äžã®
å±€ãïŒïŒïŒã¯ç¬¬äºã®å±€ãïŒïŒïŒã¯ç¬¬äžã®å±€ãïŒïŒ
ïŒã¯èªç±è¡šé¢ãïŒïŒïŒã¯äžéšé åãïŒïŒïŒã¯äžéš
é åã瀺ãã æ¯æäœ æ¬çºæã«çšããæ¯æäœïŒïŒïŒã¯ãå°é»æ§ã®ãã®
ã§ãã€ãŠãé»æ°çµ¶çžæ§ã®ãã®ã§ãã€ãŠããããå°
é»æ§æ¯æäœãšããŠã¯ãäŸãã°ãNiCrãã¹ãã³ã¬
ã¹ãAlãCrãMoãAuãNbãTaããTiãPtã
Pbãªã©ã®éå±ãŸãã¯ãããã®åéãæããããã
é»æ°çµ¶çžæ§æ¯æäœãšããŠã¯ãããªãšã¹ãã«ãããª
ãšãã¬ã³ãããªã«ãŒãããŒããã»ã«ããŒã¹ã¢ã»ã
ãŒããããªãããã¬ã³ãããªå¡©åããã«ãããªå¡©
åãããªãã³ãããªã¹ãã¬ã³ãããªã¢ãããªã©ã®
åææš¹èã®ãã€ã«ã ãŸãã¯ã·ãŒããã¬ã©ã¹ãã»ã©
ããã¯ãçŽãªã©ãæããããããããã®é»æ°çµ¶çž
æ§æ¯æäœã¯ã奜é©ã«ã¯å°ãªããšããã®äžæ¹ã®è¡šé¢
ãå°é»åŠçãã該å°é»åŠçãããè¡šé¢åŽã«å å容
å±€ãèšããã®ãæãŸããã äŸãã°ãã¬ã©ã¹ã§ããã°ãã®è¡šé¢ã«ãNiCrã
AlãCrãMoãAuãIrãNbãTaããTiãPtã
PdãIn2O3ãSnO2ãITOïŒIn2O3ïŒSnO2ïŒãªã©ã
ãæãèèãèšããããšã«ãã€ãŠå°é»æ§ãä»äž
ããæãã¯ããªãšã¹ãã«ãã€ã«ã ãªã©ã®åææš¹è
ãã€ã«ã ã§ããã°ãNiCrãAlãAgãPbãZnã
NiãAuãCrãMoãIrãNbãTaããTiãPt
ãªã©ã®éå±ã®èèãç空èžçãé»åããŒã èžçã
ã¹ããã¿ãªã³ã°ãªã©ã§ãã®è¡šé¢ã«èšãããŸãã¯å
èšéå±ã§ãã®è¡šé¢ãã©ãããŒãåŠçããŠããã®è¡š
é¢ã«å°é»æ§ãä»äžãããæ¯æäœã®åœ¢ç¶ã¯ãåç
ç¶ããã«ãç¶ãæ¿ç¶ãªã©ä»»æã®åœ¢ç¶ã䜿çšå¯èœã§
ãããçšéãææã«ãã€ãŠããã®åœ¢ç¶ã¯é©å®ã«æ±º
ããããšã®ã§ãããã®ã§ããããäŸãã°ãé»åå
ççšå圢æçŽ åãšããŠäœ¿çšããã®ã§ããã°ãé£ç¶
é«éè€åã®å Žåã«ã¯ãç¡ç«¯ãã«ãç¶ãŸãã¯åçç¶
ãšããã®ãæãŸãããæ¯æäœã®åãã¯ãææéã
ã®å å°é»çŽ åã圢æãããããã«é©å®æ±ºå®ãã
ããå å°é»çŽ åãšããŠå¯ææ§ãèŠæ±ãããå Žåã«
ã¯ãæ¯æäœãšããŠã®æ©èœãå åçºæ®ãããç¯å²å
ã§å¯èœãªéãèãããããšãã§ãããããããªã
ããæ¯æäœã®è£œé åã³åæ±ãäžãæ©æ¢°ç匷床ãªã©
ã®ç¹ãããéåžžã¯ã10Ό以äžã«ãããã 第äžã®å±€ 第äžã®å±€ïŒïŒïŒã¯ãåèšæ¯æäœïŒïŒïŒäžã«èšã
ããã®ã§ãã€ãŠãäŒå°æ§ãå¶åŸ¡ããç©è³ªãå«æã
ãã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ãŸãã¯æ°ŽçŽ åã¢ã¢ã«ãã¢
ã¹ã·ãªã³ã³ã以äžãïœâSiM(H)ãïŒäœããïŒã¯äŒ
å°æ§ãå¶åŸ¡ããç©è³ªãè¡šãããïŒããšè¡šèšãããã
ã§æ§æãããã åèšã®äŒå°æ§ãå¶åŸ¡ããç©è³ªãšããŠã¯ãéå°äœ
åéã«ãããŠãããããããäžçŽç©ãæããããš
ãã§ããïœåäŒå°æ§ãäžããåšæåŸè¡šç¬¬æã«å±
ããååïŒä»¥äžåã«ã第æååããšç§°ããïŒããŸ
ãã¯ãïœåäŒå°æ§ãäžããåšæåŸè¡šç¬¬æã«å±ã
ãååïŒä»¥äžåã«ã第æååããšç§°ããïŒãçš
ãããå ·äœçã«ã¯ã第æååãšããŠã¯ãïŒç¡Œ
çŽ ïŒãAlïŒã¢ã«ãããŠã ïŒãGaïŒã¬ãªãŠã ïŒInïŒã€ã³
ãžãŠã ïŒãTlïŒã¿ãªãŠã ïŒãªã©ãæãããããã
ç¹ã«å¥œãŸããã¯ããGaãçšããããŸãã第
æååãšããŠã¯ãïŒçïŒãAsïŒç çŽ ïŒãSbïŒã¢ã³ã
ã¢ã³ïŒãBuïŒãã¹ãã¹ïŒãªã©ãæããããããç¹
ã«å¥œãŸããã¯ããAsãçšããã 第äžã®å±€ïŒïŒïŒã¯ãäŒå°æ§ãå¶åŸ¡ããç©è³ªã§ã
ããšããã®ç¬¬æååãŸãã¯ç¬¬æååãå«æã
ãããããšã«ãããæ¯æäœåŽããå å容局äžãžã®
é»è·ã®æ³šå ¥ãé»æ¢ããé»è·é»æ¢å±€ã圢æããæ©èœ
ãæãããšãšãã«é»ç£æ³¢ç §å°ã«ãã€ãŠç¬¬äºã®å±€äž
ã«çããæ¯æäœåŽã«åãã€ãŠç§»åããé»è·ã®ç¬¬äº
ã®å±€ããæ¯æåŽãžã®ééãèš±ãæ©èœãæããŠã
ãã 第äžã®å±€ïŒïŒïŒã«å«æãããã第æååãŸã
ã¯ç¬¬æååã®éã¯ãéåžžã¯ïŒÃ10ãïŒÃ
104atomic ppmã奜ãŸããã¯ïŒÃ10ãïŒÃ
104atomic ppmãæé©ã«ã¯ïŒÃ102ãïŒÃ
103atomic ppmãšããã®ãæãŸããã æŽã«å¿ èŠã«å¿ããŠå«æããããæ°ŽçŽ ååã®é
ã¯ãéåžžã¯ïŒÃ10-2ãïŒÃ10atomicïŒ ã奜ãŸã
ãã¯ïŒÃ10-2ãïŒÃ10atomicïŒ ãæé©ã«ã¯ïŒÃ
10-1ã25atomicïŒ ãšããã®ãæãŸããã 第äžã®å±€åã¯ãæ¬çºæã®ç®çãå¹ççã«éæã
ãããã®éèŠãªå åã§ããã奜ãŸããã¯30â«ã
1000â«ãšããã®ãæãŸããã 第äºã®å±€ 第äºã®å±€ïŒïŒïŒã¯ãåè¿°ã®ç¬¬äžã®å±€ïŒïŒïŒäžã«
èšãããã®ã§ãã€ãŠãã·ãªã³ã³ååãæ¯äœãšãã
å¿ èŠã«å¿ããŠæ°ŽçŽ åååã¯ïŒåã³ããã²ã³ååã
å«æããéæ¶è³ªææãå³ã¡ïœâSiïŒïŒšãïŒã§æ§
æãããŠããã 第äºã®å±€ã«å«æããããæ°ŽçŽ åå(H)ã®éããŸã
ã¯ããã²ã³åå(X)ã®éããããã¯æ°ŽçŽ ååãšãã
ã²ã³ååã®éã®åã¯ãéåžžã¯ïŒÃ10-2ãïŒÃ
10atomicïŒ ã奜ãŸããã¯ïŒÃ10-2ãïŒÃ
10atomicïŒ ãæé©ã«ã¯ïŒÃ10-1ã25atomicïŒ ãš
ããã 第äºã®å±€ïŒïŒïŒã®å±€åã¯ãæ¬çºæã®ç®çãå¹ç
çã«éæããããã®éèŠãªå åã®ïŒã€ã§ãããæ
æã®ç®çã«å¿ããŠé©å®æ±ºå®ãããã®ã§ããããŸ
ãã該局ã«å«æããããæ°ŽçŽ åååã¯ïŒåã³ãã
ã²ã³ååã®éããããã¯ä»ã®å±€ã®å±€åãšã®é¢ä¿ã«
ãããŠãèŠæ±ãããç¹æ§ã«å¿ããŠçžäºçãã€ææ©
çé¢é£æ§ã®äžã«æ±ºå®ããå¿ èŠããããæŽã«ãçç£
æ§ãéç£æ§ããå å³ããçµæžæ§ã®ç¹ã«ãããŠãè
æ ®ããå¿ èŠããããããããããšãããéåžžã¯ïŒ
ã100ÎŒã奜ãŸããã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒ
ãšããã®ãæãŸããã 第äžã®å±€ 第äžã®å±€ïŒïŒïŒã¯ãæ¬çºæã®å å°é»çŽ åã®è湿
æ§ãé£ç¶ç¹°è¿ã䜿çšç¹æ§ãé»æ°çèå§æ§ã䜿çšç°
å¢ç¹æ§ãããã³èä¹ æ§ãªã©ãåäžããããšãšã
ã«ãèªç±è¡šé¢ïŒïŒïŒåŽããã®é»è·ã®æ³šå ¥ãé»æ¢ã
ãæ©èœãæããå±€ã§ãã€ãŠãççŽ ãå«æããã¢ã¢
ã«ãã¢ã¹ã·ãªã³ã³ãå³ã¡ïœâSiCã§æ§æãããã
ãããŠã該第äžã®å±€ïŒïŒïŒã®äžéšé åïŒïŒïŒã¯äœ
é床ã§äœæããããšã«ããæ¬ é¥å¯åºŠãïŒÃ1018cm
-3ïŒESRã·ã°ãã«ïŒä»¥äžãšãªãããã«ãããã®å±€
åã0.05ã0.2ÎŒã§ããããã«ããã ãŸããäžéšé åïŒïŒïŒã¯æ¯èŒçé«é床ã§äœæã
ãããšã«ããæ¬ é¥å¯åºŠãïŒÃ1018cm-3ïŒESRã·ã°
ãã«ïŒä»¥äžãšãªãããã«ãããã®äœç©æµæãïŒÃ
1012Ωã»cm以äžã§ããããã«ããã æ¬çºæã®å å°é»çŽ åã¯äžè¿°ã®ããšããïœâSiC
ã§æ§æããã第äžã®å±€ããæ¬ é¥å¯åºŠãšäœç©æµæã
ç°ãªãäºå±€æ§æãšããããšã«ãããåè¿°ã®ç®çã
éæã§ãããã®ã§ãããã第äžã®å±€ã®äžéšé åïŒ
ïŒïŒããã³äžéšé åïŒïŒïŒã«å«æããããççŽ å
åã®éã¯ãéåžžïŒÃ10-3ã90atomicïŒ ãšãã奜
ãŸããã¯ïŒã90atomicïŒ ãæé©ã«ã¯10ã
80atomicïŒ ãšããã æ¬çºæã®å å°é»çŽ åã¯åè¿°ã®ãããªå±€æ§æãšã
ãããšã«ãããã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ã§æ§æãã
ãå å容局ãæããåŸæ¥ã®å å°é»çŽ åã®è«žåé¡ã®
ç·ãŠã解決ãã極ããŠåªããé»æ°çãå åŠçãå
å°é»çç¹æ§ãé»æ°çèå§æ§åã³äœ¿çšç°å¢ç¹æ§ã瀺
ããç¹ã«ãé»ååççšå圢æçŽ åãšããŠé©çšãã
å Žåã«ã¯ãç»å圢æãžã®æ®çé»äœã®åœ±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«åªããæ¿åºŠãé«ããããŒãããŒã³ãé®®
æã«åºãŠããã€è§£å床ã®é«ããé«å質ã®ç»åãå®
å®ããŠç¹°è¿ãåŸãããšãã§ããã 次ã«ãæ¬çºæã®å å容局ã®åœ¢ææ¹æ³ã«ã€ããŠèª¬
æããã æ¬çºæã®å å容局ã¯ãïœâSiïŒïŒšãïŒçªçŽ å
åã第æååãŸãã¯ç¬¬æååãå«æãããã
éæ¶è³ªææã§æ§æãããå±€ãçµã¿åãããåè¿°ã®
ããšãç¹å®ã®å±€æ§æãšãããã®ã§ããããããã
ã®å±€ã¯ããããããã°ããŒæŸé»æ³ãã¹ããã¿ãªã³
ã°æ³ããããã¯ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ãªã©ã®æŸ
é»çŸè±¡ãå©çšããç空å ç©æ³ã«ãã€ãŠåœ¢æã§ã
ãããããã®æ¹æ³ã¯ã補é æ¡ä»¶ãèšåè³æ¬æäžã®
è² è·çšåºŠã補é èŠæš¡ã補é ãããå å°é»çŽ åã«èŠ
æ±ãããç¹æ§ãªã©ã®èŠå ã«ãã€ãŠãé©å®éžæããŠ
çšããããææã®ç¹æ§ãæããå å°é»çŽ åã補é
ããã«åœãã€ãŠã®æ¡ä»¶ã®å¶åŸ¡ãæ¯èŒç容æã§ã
ããã·ãªã³ã³ååãšãšãã«æ°ŽçŽ åååã³ïŒåã¯ã
ãã²ã³ååã®å°å ¥ã容æã«è¡ãåŸããªã©ã®ããšã
ãããŠãã°ããŒæŸé»æ³ããããã¯ã¹ããã¿ãªã³ã°
æ³ã奜é©ã§ããããããŠãã°ããŒæŸé»æ³ãšã¹ãã
ã¿ãªã³ã°æ³ãšãåäžè£ 眮系å ã§äœµçšããŠåœ¢æãã
ããšãã§ãããäŸãã°ãã°ããŒæŸé»æ³ã«ãã€ãŠã
ïœâSiïŒïŒšãïŒã§æ§æãããå±€ã圢æããã«ã¯ã
åºæ¬çã«ã¯ã·ãªã³ã³ååïŒSiïŒãäŸçµŠãåŸãSiäŸ
絊çšã®åæã¬ã¹ãšå ±ã«ãæ°ŽçŽ åå(H)å°å ¥çšã®å
ã¯ïŒåã³ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹ããå
éšãæžå§ã«ãåŸãå ç©å®€å ã«å°å ¥ããŠã該å ç©å®€
å ã«ã°ããŒæŸé»ãçèµ·ãããäºãæå®äœçœ®ã«èšçœ®
ããæå®ã®æ¯æäœè¡šé¢äžã«ïœâSiïŒïŒšãïŒãã
æãå±€ã圢æããã å¿ èŠã«å¿ããŠå±€äžã«å«æããããããã²ã³åå
(X)ãšããŠã¯ãå ·äœçã«ã¯ããçŽ ãå¡©çŽ ãèçŽ ããš
ãŠçŽ ãæããããæ®ã«ããçŽ ãå¡©çŽ ã奜ãŸããã åèšSiäŸçµŠçšã®åæã¬ã¹ãšããŠã¯ãSiH4ã
Si2H6ãSi3H8ãSi4H10ãªã©ã®ã¬ã¹ç¶æ ã®ãŸãã¯
ã¬ã¹åãåŸãæ°ŽçŽ åç¡ çŽ ïŒã·ã©ã³é¡ïŒãæãã
ããç¹ã«ã局圢æäœæ¥ã®ãæããSiäŸçµŠå¹çã®è¯
ããªã©ã®ç¹ã§ãSiH4ãSi2H6ã奜ãŸããã ãŸããåèšããã²ã³ååå°å ¥çšã®åæã¬ã¹ãšã
ãŠã¯ãå€ãã®ããã²ã³ååç©ãæããããäŸãã°
ããã²ã³ã¬ã¹ãããã²ã³åç©ãããã²ã³éåå
ç©ãããã²ã³ã§çœ®æãããã·ã©ã³èªå°äœãªã©ã®ã¬
ã¹ç¶æ ã®ãŸãã¯ã¬ã¹åãåŸãããã²ã³ååç©ã奜
ãŸãããå ·äœçã«ã¯ããçŽ ãå¡©çŽ ãèçŽ ããšãŠçŽ
ã®ããã²ã³ã¬ã¹ãBrFãClFãClF3ãBrF5ã
BrF3IF7ãIClãIBrãªã©ã®ããã²ã³éååç©ãã
ãã³SiF4ãSi2F6ãSiCl4ãSiBr4ãªã©ã®ããã²ã³
åç¡ çŽ ãªã©ãæãããããäžè¿°ã®ããšãããã²ã³
åç¡ çŽ ã®ã¬ã¹ç¶æ ã®ãŸãã¯ã¬ã¹åãåŸããã®ãçš
ããå Žåã«ã¯ãSiäŸçµŠçšã®åæã¬ã¹ãå¥é䜿çšã
ãããšãªãããŠãããã²ã³ååãå«æããïœâSi
ã§æ§æãããå±€ã圢æã§ããã®ã§ãç¹ã«æå¹ã§ã
ãã ãŸããåèšæ°ŽçŽ ååäŸçµŠçšã®åæã¬ã¹ãšããŠ
ã¯ãæ°ŽçŽ ã¬ã¹ãHFãHClãHBrãHIãªã©ã®ãã
ã²ã³åç©ãSiH4ãSi2H6ãSi3H8ãSi4H10ãªã©ã®
æ°ŽçŽ åç¡ çŽ ããããã¯SiH2F2ãSiH2I2ã
SiH2Cl2ãSiHCl3ãSiH2Br2ãSiHBr3ãªã©ã®ãã
ã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãªã©ã®ã¬ã¹ç¶æ ã®ãŸãã¯ã¬ã¹
åãåŸããã®ãçšããããšãã§ãããããã®åæ
ã¬ã¹ãçšããå Žåã«ã¯ãé»æ°çãããã¯å é»çç¹
æ§ã®å¶åŸ¡ãšããç¹ã§æ¥µããŠæå¹ã§ãããšããã®æ°Ž
çŽ åå(H)ã®å«æéã®å¶åŸ¡ã容æã«è¡ãããšãã§ã
ããããæå¹ã§ããããããŠãåèšããã²ã³åæ°Ž
çŽ ãŸãã¯åèšããã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãçšããå Ž
åã«ã¯ããã²ã³ååã®å°å ¥ãšåæã«æ°ŽçŽ åå(H)ã
å°å ¥ãããã®ã§ãç¹ã«æå¹ã§ããã ããã²ã³åå(X)ã®éãŸãã¯æ°ŽçŽ ååã®éãŸãã¯
ããã²ã³ååãšæ°ŽçŽ ååã®éã®åïŒïŒžïŒïŒšïŒã¯ã
éåžžã¯0.01ã40atomicïŒ ã奜ãŸããã¯0.05ã
30atomicïŒ ãæé©ã«ã¯0.1ã25atomicïŒ ãšããã®
ãæãŸãããå±€äžã«å«æããããæ°ŽçŽ åå(H)å
ã¯ïŒåã³ããã²ã³åå(X)ã®éã®å¶åŸ¡ã¯ãäŸãã°æ¯
æäœæž©åºŠãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³åå(X)
ãå°å ¥ããããã«çšããåºçºç©è³ªã®å ç©å®€å ãžå°
å ¥ããéãæŸé»é»åãªã©ãå¶åŸ¡ããããšã«ãã€ãŠ
è¡ãããã åå¿ã¹ããã¿ãªã³ã°æ³ãããã¯ã€ãªã³ãã¬ãŒã
ã€ã³ã°æ³ã«äŸã€ãŠïœâSiïŒïŒšãïŒããæãå±€ã
圢æããã«ã¯ãäŸãã°ã¹ããã¿ãªã³ã°æ³ã®å Žåã«
ã¯ãSiããæãã¿ãŒã²ããã䜿çšããŠããããæ
å®ã®ã¬ã¹ãã©ãºãé°å²æ°äžã§ã¹ããã¿ãªã³ã°ãã
ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®å Žåã«ã¯ãå€çµæ¶ã·ãª
ã³ã³ãŸãã¯åçµæ¶ã·ãªã³ã³ãèžçºæºãšããŠèžçã
ãŒãã«å容ãããã®ã·ãªã³ã³èžçºæºãæµæå ç±
æ³ããããã¯ãšã¬ã¯ããã³ããŒã æ³ïŒEBæ³ïŒãª
ã©ã«ãã€ãŠå ç±èžçºããé£ç¿èžçºç©ãæå®ã®ã¬ã¹
ãã©ãºãé°å²æ°äžãééãããããšã§è¡ãããšã
ã§ããã ãã®éãã¹ããã¿ãªã³ã°æ³ãã€ãªã³ãã¬ãŒãã€
ã³ã°æ³ã®äœãã®å Žåã§ã圢æãããå±€äžã«ããã²
ã³ååãå°å ¥ããã«ã€ããŠã¯ãåèšã®ããã²ã³å
åç©ãŸãã¯åèšã®ããã²ã³ååãå«ãç¡ çŽ ååç©
ã®ã¬ã¹ãå ç©å®€äžã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°
å²æ°ã圢æããŠããã°ããã ãŸããæ°ŽçŽ ååãå°å ¥ããå Žåã«ã¯ãæ°ŽçŽ åå
å°å ¥çšã®åæã¬ã¹ãäŸãã°ãH2ãããã¯åèšã
ãã·ã©ã³é¡ãªã©ã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®å ç©
宀äžã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°å²æ°ã圢æã
ãŠããã°ããã äŸãã°ãåå¿ã¹ããã¿ãªã³ã°æ³ã®å Žåã«ã¯ãSi
ã¿ãŒã²ããã䜿çšããããã²ã³ååå°å ¥çšã®ã¬ã¹
ããã³H2ã¬ã¹ãå¿ èŠã«å¿ããŠHeãArãªã©ã®äžæŽ»
æ§ã¬ã¹ãå«ããŠå ç©å®€å ã«å°å ¥ããŠãã©ãºãé°å²
æ°ã圢æããåèšSiã¿ãŒã²ãããã¹ããã¿ãªã³ã°
ããããšã«ãã€ãŠãæ¯æäœäžã«ïœâSiïŒïŒšãïŒ
ããæãå±€ã圢æããã ã°ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ããããã¯ã€
ãªã³ãã¬ãŒãã€ã³ã°æ³ãçšããŠãïœâSi(H)ã«ãã
ã«ç¬¬æååãŸãã¯ç¬¬æååãå«æããããé
æ¶è³ªææã§æ§æãããå±€ã圢æããã«ã¯ãïœâSi
(H)ã®å±€ã®åœ¢æã®éã«ã第æååãŸãã¯ç¬¬æå
åå°å ¥çšã®åºçºç©è³ªããåè¿°ããïœâSi(H)圢æçš
ã®åºçºç©è³ªãšå ±ã«äœ¿çšããŠã圢æããå±€äžãžã®ã
ããã®éãå¶åŸ¡ããªããå«æããããŠããããšã«
ãã€ãŠè¡ãã äŸãã°ã第æååãŸãã¯ç¬¬æååãå«æã
ãïœâSi(H)ãå³ã¡ãïœâSiM(H)ãã§æ§æããã第
äžã®å±€ãã°ããŒæŸé»æ³ã«ãã€ãŠåœ¢æããã«ã¯ãïœ
âSiM(H)圢æçšã®åæã¬ã¹ããå¿ èŠã«å¿ããŠArã
Heãªã©ã®çšéã¬ã¹ãšæå®éã®æ··åæ¯ã§æ··åããŠã
æ¯æäœïŒïŒïŒã®èšçœ®ããŠããç空å ç©çšã®å ç©å®€
ã«å°å ¥ããå°å ¥ãããã¬ã¹ãã°ããŒæŸé»ãçèµ·ã
ããããšã§ã¬ã¹ãã©ãºãåããŠåèšæ¯æäœäžã«ïœ
âSiM(H)ãå ç©ãããã°ããã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠå ·äœçã«ã¯
ç¡ŒçŽ ååå°å ¥çšãšããŠã¯ãB2H6ãB4H10ã
B5H9ãB5H11ãB6H10ãB6H12ãB6H14ãªã©ã®æ°Ž
çŽ åç¡ŒçŽ ãBF3ãBCl3ãBBr3ãªã©ã®ããã²ã³å
ç¡ŒçŽ ãªã©ãæããããããã®ä»ãAlCl3ãCaCl3ã
GaïŒCHïŒ2ãInCl3ãTlCl3ãªã©ãæããããšãã§
ããã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠãå ·äœçã«
ã¯çååå°å ¥çšãšããŠã¯PH3ãP2H6ãªã©ã®æ°ŽçŽ
åçãPH4IãPF3ãPF5ãPCl3ãPCl5ãPBr3ã
PBr5ãPI3ãªã©ã®ããã²ã³åçãæãããããã
ã®ä»ãAsH3ãAsF3ãAsCl3ãAsBr3ãAsF5ã
SbH3ãSbF5ãSbCl3ãSbCl5ãBiH3ãBiCl3ã
BiBr5ãªã©ã第æååå°å ¥çšã®åºçºç©è³ªã®æå¹
ãªãã®ãšããŠæããããšãã§ããã ãŸããã°ããŒæŸé»æ³ã«ãã第äžã®å±€ã圢æãã
ã«ã¯ãïœâSiC圢æçšã®åæã¬ã¹ããå¿ èŠã«å¿ã
ãŠçšéã¬ã¹ãšæ··åããŠãæ¯æäœïŒïŒïŒã®èšçœ®ããŠ
ããç空å ç©çšã®å ç©å®€ã«å°å ¥ããå°å ¥ãããã¬
ã¹ãã°ããŒæŸé»ãçèµ·ãããããšã§ã¬ã¹ãã©ãºã
åããŠåèšæ¯æäœäžã«æ¢ã«åœ¢æãããŠãã第äºã®
å±€äžã«ïœâSiCå±€ãããªã第äžã®å±€ãå ç©ããã
ã°ããã ïœâSiC局圢æçšã®åæã¬ã¹ãšããŠã¯ãSiã
ã®ããããïŒã€ãããã¯äž¡æ¹ããæ§æååãšãã
ã¬ã¹ç¶ã®ç©è³ªãŸãã¯ã¬ã¹åãåŸãç©è³ªãã¬ã¹åã
ããã®ã§ããã°ããããã®ãã®ã§ãã€ãŠãããã ïœâSiCã§æ§æããã局圢æçšã®åæã¬ã¹ãšã
ãŠæå¹ã«äœ¿çšãããã®ã¯ãSiãšïŒšãšãæ§æååãš
ããSiH4ãSi2H6ãSi3H6ãSi4H10ãªã©ã®ã·ã©ã³
ïŒSilanceïŒé¡ãªã©ã®æ°ŽçŽ åç¡ çŽ ã¬ã¹ããšïŒšãšã
æ§æååãšãããäŸãã°ççŽ æ°ïŒãïŒã®é£œåçå
æ°ŽçŽ ãççŽ æ°ïŒãïŒã®ãšãã¬ã³ç³»çåæ°ŽçŽ ãççŽ
æ°ïŒãïŒã®ã¢ã»ãã¬ã³ç³»çåæ°ŽçŽ ãªã©ãæããã
ãã å ·äœçã«ã¯ã飜åçåæ°ŽçŽ ãšããŠã¯ãã¡ã¿ã³
ïŒCH4ïŒããšã¿ã³ïŒC2H6ïŒããããã³ïŒC3H8ïŒãïœ
âãã¿ã³ïŒïœâC4H10ïŒããã³ã¿ã³ïŒC5H12ïŒããš
ãã¬ã³ç³»çåæ°ŽçŽ ãšããŠã¯ããšãã¬ã³ïŒC2H4ïŒã
ãããã¬ã³ïŒC3H6ïŒãããã³âïŒïŒC4H8ïŒããã
ã³âïŒïŒC4H8ïŒãã€ãœããã¬ã³ïŒC4H8ïŒããã³ã
ã³ïŒC5H10ïŒãã¢ã»ãã¬ã³ç³»çåæ°ŽçŽ ãšããŠã¯ã
ã¢ã»ãã¬ã³ïŒC2H2ïŒãã¡ãã«ã¢ã»ãã¬ã³
ïŒC3H4ïŒãããã³ïŒC4H6ïŒãªã©ãæãããããSi
ãšïŒ£ãšïŒšãšãæ§æååãšããåæã¬ã¹ãšããŠã¯ã
SiïŒCH3ïŒ4ãSiïŒC2H5ïŒ4ãªã©ã®ã±ã€åã¢ã«ãã«ãæ
ããããšãã§ããããããã®åæã¬ã¹ã®ä»ãå°
å ¥çšã®åæã¬ã¹ãšããŠã¯ãã¡ããH2ã䜿çšã§ã
ãã ãŸããã¹ããã¿ãªã³ã°æ³ã«ãã€ãŠïœâSiCã§æ§
æããã第äºã®å±€ã圢æããã«ã¯ãåçµæ¶ãŸãã¯
å€çµæ¶ã®SiãŠãšãŒããŸãã¯ïŒ£ïŒã°ã©ãã¢ã€ãïŒãŠ
ãšãŒãããŸãã¯SiãšïŒ£ãæ··åãããŠå«æãããŠã
ããŠãšãŒããã¿ãŒã²ãããšããŠãããããææã®
ã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³ã°ããããšã«ãã€ãŠ
è¡ãã äŸãã°SiãŠãšãŒããã¿ãŒã²ãããšããŠäœ¿çšãã
å Žåã«ã¯ãççŽ ååãå°å ¥ããããã®åæã¬ã¹ã
å¿ èŠã«å¿ããŠArãHeãªã©ã®çšéã¬ã¹ã§çšéã
ãŠãã¹ããã¿ãªã³ã°çšã®å ç©å®€å ã«å°å ¥ãããã
ãã®ã¬ã¹ã®ã¬ã¹ãã©ãºãã圢æããŠSiãŠãšãŒãã
ã¹ããã¿ãªã³ã°ããã°ããã ãŸããSiãšïŒ£ãšã¯å¥ã ã®ã¿ãŒã²ãããšãããã
ãããã¯SiãšïŒ£ã®æ··åããïŒæã®ã¿ãŒã²ãããšã
ãŠäœ¿çšããå Žåã«ã¯ãããããã¹ããã¿ãªã³ã°çš
ã®å ç©å®€å ã«å°å ¥ããã¬ã¹ãã©ãºãã圢æããŠã¹
ããã¿ãªã³ã°ããã°ããã ã°ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ããããã¯ã€
ãªã³ãã¬ãŒãã€ã³ã°æ³ã«ããæ¬çºæã®å å°é»çŽ å
ã圢æããå ŽåãïœâSiïŒïŒšãïŒã«å°å ¥ãã第
æååãŸãã¯ç¬¬æååãããã¯çªçŽ ååã®å«
æéã¯ãå ç©äžã«æµå ¥ãããåºçºç©è³ªã®ã¬ã¹æµ
éãã¬ã¹æµéæ¯ãæŸé»ãã¯ãŒãæ¯æäœæž©åºŠãå ç©
宀å ã®å§åãªã©ãå¶åŸ¡ããããšã«ãã€ãŠä»»æã«å¶
埡ã§ããã æ¯æäœæž©åºŠã¯éåžžã®å Žåã50ã350âã奜é©ã«
ã¯100ã250âãšããã®ãæãŸãããã®ã§ãããæŸ
é»ãã¯ãŒæ¡ä»¶ã¯ãããããã®å±€ã®æ©èœã«èæ ®ãã¯
ãã€ãŠãé©å®éžæãããå ·äœçã«ã¯ã0.005ã
50WïŒcm2ã®ç¯å²ã«ããã®ãéåžžã§ãããããã奜
ãŸããã¯ã0.01ã30WïŒcm2ãç¹ã«å¥œãŸããã¯0.01
ã20WïŒcm2ã®ç¯å²ã§ãããæ¯æäœæž©åºŠãæŸé»ãã¯
ãŒã®æãŸããæ°å€ç¯å²ãšããŠåèšããç¯å²ã®å€ã
æãããããããããã®å±€äœæãã¢ã¯ã¿ãŒã¯ãé
åžžã¯ç¬ç«çã«å¥ã ã«æ±ºãããããã®ã§ã¯ãªããæ
æç¹æ§ã®ã¢ã¢ã«ãã¢ã¹å±€ã圢æãã¹ãçžäºçãã€
ææ©çé¢é£æ§ã«åºã¥ããŠãåå±€äœæãã¢ã¯ã¿ãŒã®
æé©å€ã決ããã®ãæãŸããã ãå®æœäŸã 以äžãæ¬çºæãå®æœäŸïŒä¹è³ïŒã«åŸã€ãŠããã
詳现ã«èª¬æããããæ¬çºæã¯ããçã«ãã€ãŠéå®
ããããã®ã§ã¯ãªãã åå®æœäŸã«ãããŠã¯ã第äžã®å±€ããã³ç¬¬äºã®å±€
ãã°ããŒæŸé»æ³ãçšããŠåœ¢æããã第ïŒå³ã¯ã°ã
ãŒæŸé»æ³ã«ããæ¬çºæã®å å°é»çŽ åã®è£œé è£ çœ®ã§
ããã å³äžã®ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒ
ïŒã®ã¬ã¹ãã³ãã«ã¯ãæ¬çºæã®å€«ã ã®å±€ã圢æã
ãããã®åæã¬ã¹ãå¯å°ãããŠããããã®äžäŸãš
ããŠãããšãã°ïŒïŒïŒã¯Heã§çšéãããSiH4ã¬
ã¹ïŒçŽåºŠ99.999ïŒ ã以äžSiH4ïŒHeãšç¥ãïŒãã³
ããïŒïŒïŒã¯Heã§çšéãããPH3ã¬ã¹ïŒçŽåºŠ
99.999ïŒ ã以äžPH3ïŒHeãšç¥ãïŒãã³ããïŒïŒ
ïŒã¯Heã§çšéãããB2H6ã¬ã¹ïŒçŽåºŠ99.99ïŒ ã
以äžB2H6ïŒHeãšç¥ãïŒãã³ããïŒïŒïŒã¯ã¬ã¹
ïŒçŽåºŠ99.999ïŒ ïŒãã³ããïŒïŒïŒã¯CH4ã¬ã¹ãã³
ãã§ããã 圢æãããå±€äžã«ããã²ã³ååãå°å ¥ããå Žå
ã«ã¯ãSiH4ã¬ã¹ã«ä»£ããŠãäŸãã°ãSiF4ã¬ã¹ã
çšããããã«ãã³ãã代ããã°ããã ãããã®ã¬ã¹ãåå¿å®€ïŒïŒïŒã«æµå ¥ãããã«ã¯
ã¬ã¹ãã³ãïŒïŒïŒãïŒïŒïŒã®ãã«ãïŒïŒïŒãïŒïŒ
ïŒããªãŒã¯ãã«ãïŒïŒïŒãéããããŠããããšã
確èªãããŸããæµå ¥ãã«ãïŒïŒïŒãïŒïŒïŒãæµåº
ãã«ãïŒïŒïŒãïŒïŒïŒãè£å©ãã«ãïŒïŒïŒïŒïŒïŒ
ïŒãéãããŠããããšã確èªããŠãå ãã¡ã€ã³ã
ã«ãïŒïŒïŒãéããŠåå¿å®€ïŒïŒïŒãã¬ã¹é 管å ã
ææ°ããã次ã«ç空èšïŒïŒïŒã®èªã¿ãçŽïŒÃ
10-6Torrã«ãªã€ãæç¹ã§ãè£å©ãã«ãïŒïŒïŒïŒ
ïŒïŒïŒãæµåºãã«ãïŒïŒïŒãïŒïŒïŒãéããã åºäœã·ãªã³ããŒïŒïŒïŒäžã«å å容局ã圢æãã
å Žåã®äžäŸãããããã¬ã¹ãã³ãïŒïŒïŒãã
SiH4ïŒHeã¬ã¹ãã¬ã¹ãã³ãïŒïŒïŒããB2H6ïŒ
Heã¬ã¹ãã¬ã¹ãã³ãïŒïŒïŒããH2ã¬ã¹ããã«ã
ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒãéããŠåºå£å§ã²ãŒãžïŒ
ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒã®å§ãïŒKgïŒcm2ã«èª¿æŽãã
æµå ¥ãã«ãïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒãåŸã ã«éã
ãŠããã¹ããã³ã³ãããŒã©ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒ
ïŒå ã«æµå ¥ããããåŒãç¶ããŠæµåºãã«ãïŒïŒ
ïŒïŒïŒïŒïŒïŒïŒïŒïŒãè£å©ãã«ãïŒïŒïŒãåŸã ã«
éããŠã¬ã¹ãåå¿å®€ïŒïŒïŒå ã«æµå ¥ãããããã®
ãšãã®SiH4ïŒHeã¬ã¹æµéãšB2H6ïŒHeã¬ã¹æµé
ãšH2ã¬ã¹æµéã®æ¯ãææã®å€ã«ãªãããã«æµåº
ãã«ãïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒã調æŽãããŸãã
åå¿å®€ïŒïŒïŒå ã®å§åãææã®å€ã«ãªãããã«ç
空èšïŒïŒïŒã®èªã¿ãèŠãªããã¡ã€ã³ãã«ãïŒïŒïŒ
ã®éå£ã調æŽããããããŠåºäœã·ãªã³ããŒïŒïŒïŒ
ã®æž©åºŠãå ç±ããŒã¿ãŒïŒïŒïŒã«ãã50ã400âã®
ç¯å²ã®æž©åºŠã«èšå®ãããŠããããšã確èªããã
åŸãé»æºïŒïŒïŒãææã®é»åã«èšå®ããŠãåå¿å®€
ïŒïŒïŒå ã«ã°ããŒæŸé»ãçèµ·ããåºäœã·ãªã³ããŒ
ïŒïŒïŒäžã«ãå ããç¡ŒçŽ åååã³æ°ŽçŽ ååãå«æ
ããå±€ã圢æããã 次ã«æå®ã®æéçµéåŸãPH3ïŒHeã¬ã¹ãåå¿
宀ïŒïŒïŒå ãžå°å ¥ããã¬ã¹å°å ¥ç®¡ã®ãã«ãïŒïŒïŒ
ãéããŠé®æããããšã«ãã€ãŠãååãå«æãã
å±€é åã®å±€åã®ææã®åãã«ä»»æã«å¶åŸ¡ã§ããã
次ã«åŒãç¶ãã°ããŒæŸé»ãæå®æéç¶ããããšã«
ãããåè¿°ã®ç¡ŒçŽ ååãå«æãã第äžã®å±€ã®äžã«
第äºã®å±€ã圢æããã 第äºã®å±€äžã«ããã²ã³ååãå«æãããå Žåã«
ã¯äžèšã®ã¬ã¹ã«äŸãã°SiF4ïŒHeããæŽã«ä»å ã
ãŠåå¿å®€å ã«éã蟌ãã äžèšã®ãããªæäœã«ãã€ãŠãåºäœã·ãªã³ããŒïŒ
ïŒïŒäžã«åœ¢æããã第äºã®å±€äžã«ïœâSiCããæ§
æãããå±€ã圢æããã«ã¯ã第äžãäºã®å±€ã®åœ¢æ
ã®éãšåæ§ãªãã«ãæäœã«ãã€ãŠãäŸãã°ã
SiH4ã¬ã¹ãCH4ã¬ã¹åã³H2ã¬ã¹ãå¿ èŠã«å¿ããŠ
Heçã®çšéã¬ã¹ã§çšéããŠãææã®æµéæ¯ã§å
å¿å®€ïŒïŒïŒäžã«æµããææã®æ¡ä»¶ã«åŸã€ãŠãã°ã
ãŒæŸé»ãçèµ·ãããæ¯èŒçé«é床ã§ïœâSiCå±€ã
圢æãããŠããŸãäžéšé åã®ïœâSiå±€ã圢æãã
ãã次ã«æ¯èŒçé«é床ã§ïœâSiå±€ã圢æãããŠäž
éšé åã®ïœâSiå±€ãå ç©ããã 倫ã ã®å±€ã圢æããéã«å¿ èŠãªã¬ã¹ã®æµåºãã«
ã以å€ã®æµåºãã«ãã¯å šãŠéããããšã¯èšããŸã§
ããªãããŸã倫ã ã®å±€ã圢æããéãåå±€ã®åœ¢æ
ã«äœ¿çšããã¬ã¹ãåå¿å®€ïŒïŒïŒå ãæµåºãã«ãïŒ
ïŒïŒãïŒïŒïŒããåå¿å®€ïŒïŒïŒå ã«è³ãã¬ã¹é 眮
管ã«æ®çããããšãé¿ããããã«ãå¿ èŠã«å¿ããŠ
æµåºãã«ãïŒïŒïŒãïŒïŒïŒãéãè£å©ãã«ãïŒïŒ
ïŒïŒïŒïŒïŒãéããŠã¡ã€ã³ãã«ãïŒïŒïŒãå šéã
ãŠç³»å ãäžæŠé«ç空ã«ææ°ããæäœãè¡ãã ãŸãã局圢æãè¡ã€ãŠããéã¯å±€åœ¢æã®åäžå
ãå³ãããåºäœã·ãªã³ããŒïŒïŒïŒã¯ãã¢ãŒã¿ïŒïŒ
ïŒã«ãã€ãŠææãããé床ã§äžå®ã«å転ãããã å®æœäŸ ïŒ ç¬¬äžã®å±€ãæ§æããççŽ ååãå«æããã¢ã¢ã«
ãã¢ã¹ã·ãªã³ã³å±€ã®åœ¢ææ¡ä»¶ã第ïŒè¡šã«ç€ºãã
ãã®æ¡ä»¶ãšããŠäœæããããããã«ã€ããŠ
ESRã«ããç¶æ å¯åºŠãããã³äœç©æµæçã枬å®
ããããã®çµæã¯ç¬¬ïŒè¡šã«ç€ºããšããã§ãã€ãã 次ã«ã第ïŒå³ã«ç€ºãã補é è£ çœ®ã«ããããã©ã
ç¶ã¢ã«ãããŠã åºæ¿äžã«ã第ïŒè¡šã«èšèŒã®æ¡ä»¶ã§
局圢æãè¡ã€ããäœã第ïŒè¡šã«ããã第ïŒå±€ã第
ïŒå±€ã第ïŒå±€ãããã³ç¬¬ïŒå±€ãšã¯ãåã ãæ¬çºæ
ã®å å°é»çŽ åã®ç¬¬äžã®å±€ã第äºã®å±€ã第äžã®å±€ã®
äžéšé åãããã³ç¬¬äžã®å±€ã®äžéšé åã瀺ããã®
ãšãã以äžã®å®æœäŸïŒãïŒã«ã€ããŠãåæ§ã§ã
ãã ããããŠåŸãããå圢æçŽ åãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.2sec.éã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ãããå åã¯ã¿ã³ã°ã¹ãã³
ã©ã³ãå æºãçšãã1.5luxã»sec.ã®å éãééå
ã®ãã¹ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãå«ãïŒãçŽ åè¡šé¢ãã«ã¹ã±ãŒãããããš
ã«ãã€ãŠãçŽ åè¡šé¢äžã«è¯å¥œãªãããŒç»åãåŸ
ããçŽ åäžã®ãããŒç»åãã5.0KVã®ã³ãã垯
é»ã§è»¢åçŽäžã«è»¢åãããšããã解ååã«åªãã
é調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®ç»åãåŸãã
ãã ããã«ç¬¬ïŒå³ã«ç€ºãè£ çœ®ã«ãã垯é»èœãæ®çé»
äœã枬å®ãããšãã垯é»èœã¯32VïŒÎŒãæ®çé»äœ
ã¯5Vã§ãã€ããäœãã第ïŒå³ã«ãããŠãïŒïŒïŒ
ã¯ãã©ã ç¶åºäœäžã«èšããããå å°é»çŽ åãïŒïŒ
ïŒã¯ã³ãã垯é»åšãïŒïŒïŒã¯é²å çšå æºãïŒïŒïŒ
ã¯ã¹ãªãããïŒïŒïŒã¯ãã«ãŒããïŒïŒïŒã¯è¡šé¢é»
äœèšã瀺ããã®ã§ããã ãŸãã20äžåèä¹ ãè¡ã€ãŠã垯é»ãé²å ç¹æ§ã®
å€åãåã³ç»åæ¬ é¥ã®çæã¯èªããããªãã€ãã å®æœäŸ ïŒ ç¬¬ïŒå³ã«ç€ºãã補é è£ çœ®ãçšãã第ïŒå±€ã第ïŒ
å±€ã®æ¡ä»¶ã第ïŒè¡šã«ç€ºãäœææ¡ä»¶ã®äžãã第ïŒè¡š
ã«ç€ºããããªçµã¿åããã§éžæããŠäœæãããã
ã®ä»ã®æ¡ä»¶ã¯å®æœäŸïŒãšåæ§ã«ããŠè¡ã€ãã ããããŠåŸãããå å°é»çŽ åã«ã€ããŠå®æœäŸïŒ
ãšåæ§ã®è©äŸ¡ãè¡ã€ãããã®çµæã第ïŒè¡šã«ç€º
ãã å®æœäŸ ïŒ ç¬¬ïŒå±€ã第ïŒå±€ã®èåãåã 第ïŒè¡šã«ç€ºããã
ã«å€åããã以å€ã¯å®æœäŸïŒãšåæ§ã®æ¡ä»¶ã§äœæ
ãããã®è©äŸ¡ã第ïŒè¡šã«ç€ºãã å®æœäŸ ïŒ ç¬¬ïŒå±€ã第ïŒå±€ã第ïŒè¡šã«ç€ºãæ¡ä»¶ã§äœæãã
ãã®ä»ã¯å®æœäŸïŒãšåæ§ã«ããŠãå å°é»çŽ åãäœ
æããããããŠ5.0KVã§0.2sec.éã³ãã垯é»ã
è¡ã€ã以å€ã¯å®æœäŸïŒãšåæ§ã®è©äŸ¡ãè¡ã€ããšã
ã極ããŠé®®æãªç»åãåŸããã20äžåèä¹ ãè¡ã€
ãŠãã垯é»ãé²å ç¹æ§ã®å€ååã³ç»åæ¬ é¥ã®çæ
ã¯çããªãã€ãããŸãã第ïŒå³ã®è£ 眮ã§æž¬å®ãã
ãã®å å°é»çŽ åã®åž¯é»èœãæ®çé»äœã¯ 垯é»èœâŠ33VïŒÎŒ æ®çé»äœâŠ5V ã§ãã€ãã
å€ç·ãå¯èŠå ç·ãèµ€å€ç·ãç·ãγç·ãªã©ãæå³
ãããïŒã®ãããªé»ç£æ³¢ã«å¯ŸããŠæåæ§ã®ããå
å°é»çŽ åã«é¢ããã ãåŸæ¥æè¡ã®èª¬æã åºäœæ®åè£ çœ®ãæãã¯å圢æåéã«ãããé»å
åççšå圢æçŽ åãåçš¿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«é©åããåžåã¹
ãã¯ãã«ç¹æ§ãæããããšãå å¿çæ§ãéãææ
ã®ææµæå€ãæããããšã䜿çšæã«ãããŠäººäœã«
察ããŠç¡å ¬å®³ã§ããããšãæŽã«ã¯åºäœæ®åè£ çœ®ã«
ãããŠã¯ãæ®åãæå®æéå ã«å®¹æã«åŠçããã
ãšãã§ããããšãªã©ã®ç¹æ§ãèŠæ±ããããæ®ã«ã
äºåæ©ãšããŠãªãã€ã¹ã§äœ¿çšãããé»ååçè£ çœ®
å ã«çµèŸŒãŸããé»ååççšå圢æçŽ åã®å Žåã«
ã¯ãäžèšã®äœ¿çšæã«ãããç¡å ¬å®³æ§ãéèŠãªç¹ã§
ããã ãã®ãããªç¹ã«ç«èããŠæè¿æ³šç®ãããŠããå
å°é»ææã«ã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥åŸïœâSiãš
è¡šèšãããïŒããããäŸãã°ãç¬åœå ¬é第2746967
å·å ¬å ±ãå第2855718å·å ¬å ±ã«ã¯é»ååççšå圢
æçŽ åãšããŠã®äœ¿çšããŸãç¬åœå ¬é第2933411å·
å ¬å ±ã«ã¯å é»å€æèªåè£ çœ®ãžã®å¿çšãèšèŒãããŠ
ããã ããããªãããåŸæ¥ã®ïœâSiã§æ§æãããå å
容局ãæããå å°é»çŽ åã¯ãææµæå€ãå æ床ã
å å¿çæ§ãªã©ã®é»æ°çãå åŠçãå å°é»çç¹æ§ã
ããã³äœ¿çšç°å¢ç¹æ§ã®ç¹ãæŽã«ã¯çµæçå®å®æ§ã
ãã³èä¹ æ§ã®ç¹ã«ãããŠãåã ãåã ã«ã¯ç¹æ§ã®
åäžãèšãããŠããããç·åçãªç¹æ§åäžãèšã
äžã§æŽã«æ¹è¯ãããäœå°ãå€ã ååšããã®ãå®æ
ã§ããã äŸãã°ãé»ååççšå圢æçŽ åã«é©çšããå Žå
ã«ãé«å æ床åãé«ææµæåãåæã«èšãããšã
ããšåŸæ¥æ³ã§ã¯ãã®äœ¿çšæã«ãããŠæ®çé»äœãæ®
ãå Žåã床ã 芳枬ããããã®çš®ã®å å°é»çŽ åã¯é·
æéç¹°è¿ã䜿çšãç¶ãããšãç¹°è¿ã䜿çšã«ããç²
åŽã®èç©ãèµ·ã€ãŠãæ®åãçãããããããŽãŒã¹
ãçŸè±¡ãçºããããã«ãªããªã©ã®äžéœåãªç¹ãå°
ãªããªãã€ãã ãŸããïœâSiææã§å å容局ãæ§æããå Žåã«
ã¯ããã®é»æ°çãå å°é»çç¹æ§ã®æ¹è¯ãèšããã
ã«ãæ°ŽçŽ ååæãã¯åŒçŽ ååãå¡©çŽ ååãªã©ã®ã
ãã²ã³ååãããã³é»æ°äŒå°åã®å¶åŸ¡ã®ããã«ç
çŽ ååãçååãªã©ãæãã¯ãã®ä»ã®ç¹æ§æ¹è¯ã®
ããã«ä»ã®ååããåã æ§æååãšããŠå å容局
äžã«å«æããããããããã®æ§æååã®å«æã®ä»
æ¹åŠäœã«ãã€ãŠã¯ã圢æããå±€ã®é»æ°çæãã¯å
å°é»çç¹æ§ãé»æ°çèå§æ§ã«åé¡ãçããå Žåã
ãã€ãã å³ã¡ãäŸãã°ã圢æããå å容局äžã«å ç §å°ã«
ãã€ãŠçºçããããªããã€ãªã¢ã®è©²å±€äžã§ã®å¯¿åœ
ãå åã§ãªãããšããæéšã«ãããæ¯æäœåŽãã
ã®é»è·ã®æ³šå ¥ã®é»æ¢ãå åã§ãªãããšãæãã¯ã
転åçŽã«è»¢åãããç»åã«ä¿ã«ãçœãã±ããšåŒã°
ãããå±æçãªæŸé»ç Žå£çŸè±¡ã«ãããšæãããç»
åæ¬ é¥ããã¯ãªãŒãã³ã°ã«ãã¬ãŒããçšãããšã
ã®æºæŠã«ãããšæããããä¿ã«ãçœã¹ãžããšäºã
ããŠããç»åæ¬ é¥ãçãããããŠããããŸããå€
湿é°å²æ°äžã§äœ¿çšããããæãã¯å€æ¹¿é°å²æ°äžã«
é·æéæŸçœ®ããçŽåŸã«äœ¿çšãããšä¿ã«ããç»åã®
ãã±ãçããå Žåãå°ãªããªãã€ãã 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£ãçãããªã©ã®çŸè±¡ãåŒèµ·ã
ãã¡ã«ãªãããã®çŸè±¡ã¯ãæ®ã«æ¯æäœãéåžžãé»
ååçåéã«ãããŠäœ¿çšãããŠãããã©ã ç¶æ¯æ
äœã®å Žåã«å€ãèµ·ããªã©ãçµæçå®å®æ§ã®ç¹ã«ã
ããŠè§£æ±ºãããã¹ãåé¡ãããã€ãããã åŸã€ãŠïœâSiææãã®ãã®ã®ç¹æ§æ¹è¯ãèšãã
ãäžæ¹ã§å å°é»çŽ åãèšèšããéã«ãäžèšããã
ããªåé¡ã®ç·ãŠã解決ãããããã«å·¥å€«ãããå¿
èŠãããã ãçºæã®ç®çã æ¬çºæã¯ãäžè¿°ã®ããšãïœâSiã§æ§æãããå
å容局ãæããå å°é»çŽ åã«ãããè«žåé¡ã解決
ããããšãç®çãšãããã®ã§ããã å³ã¡ãæ¬çºæã®äž»ããç®çã¯ãé»æ°çãå åŠ
çãå å°é»çç¹æ§ã䜿çšç°å¢ã«æ®ãã©äŸåããã
ãšãªãå®è³ªçã«åžžæå®å®ããŠãããèå ç²åŽã«åª
ããç¹°è¿ã䜿çšã«éããŠãå£åçŸè±¡ãèµ·ãããè
ä¹ æ§ãè湿æ§ã«åªããæ®çé»äœãå šãããŸãã¯æ®
ãã©èŠ³æž¬ãããªããïœâSiã§æ§æãããå å容局
ãæããå å°é»çŽ åãæäŸããããšã«ããã æ¬çºæã®å¥ã®ç®çã¯ãé«å æ床æ§ãé«SNæ¯ç¹
æ§åã³é«é»æ°çèå§æ§ãæãããïœâSiã§æ§æã
ããå å容局ãæããå å°é»çŽ åãæäŸããããš
ã«ããã æ¬çºæã®æŽã«å¥ã®ç®çã¯ãæ¯æäœäžã«èšããã
ãå±€ãšæ¯æäœãšã®éãç©å±€ãããåå±€éã«ããã
å¯çæ§ã«åªããæ§é é åçã«ç·»å¯ã§å®å®çã§ã
ããå±€å質ã®é«ããïœâSiã§æ§æãããå å容局
ãæããå å°é»çŽ åãæäŸããããšã§ããã æ¬çºæã®ä»ã®ç®çã¯ãé»ååççšå圢æçŽ åãš
ããŠé©çšãããå Žåãéé»å圢æã®ããã®åž¯é»åŠ
çã®éã®é»è·ä¿æèœåãå åã§ãããéåžžã®é»å
åçæ³ã極ããŠæå¹ã«é©çšãããåªããé»ååç
ç¹æ§ãæãããïœâSiã§æ§æãããå å容局ãæ
ããå å°é»çŽ åãæäŸããããšã«ããã æ¬çºæã®æŽã«ä»ã®ç®çã¯ãé·æã®äœ¿çšã«ãããŠ
ç»åæ¬ é¥ãç»åã®ãã±ãå šããªããæ¿åºŠãé«ãã
ããŒãããŒã³ãé®®æã«åºãŠãã€è§£å床ã®é«ããé«
å質ç»åãåŸãããšãã§ããïœâSiã§æ§æããã
å å容局ãæããé»ååççšã®å å°é»çŽ åãæäŸ
ããããšã«ããã ãçºæã®æ§æã æ¬çºæã¯äžè¿°ã®ç®çãéæãããã®ã§ãã€ãŠã
é»ååççšå圢æçŽ åãåºäœæ®åè£ çœ®ãèªåè£ çœ®
ãªã©ã«äœ¿çšãããå å°é»çŽ åãšããŠã®ïœâSiã®è£œ
åæç«æ§ãé©çšæ§ãå¿çšæ§ãªã©ã®äºé ãå«ããŠç·
æ¬çã«éæç 究ãç¶ããçµæãã·ãªã³ã³ååãæ¯
äœãšããéæ¶è³ªææã§æ§æãããå å容局ãæã
ãå å°é»çŽ åã®å±€æ§æã以äžã«èšèŒãããããªç¹
å®ã®å±€æ§æã®äžã«èšèšãããŠäœæãããå å°é»çŽ
åããå®çšäžèããåªããç¹æ§ã瀺ãã°ããã§ãª
ããåŸæ¥ã®å å°é»çŽ åãšæ¯èŒããŠã¿ãŠããããã
ç¹ã«ãããŠåé§ããŠãããç¹ã«é»ååççšã®å å°
é»çŽ åãšããŠèããåªããç¹æ§ãæããŠãããšã
ãäºå®ãèŠãåºããããšã«åºã¥ããŠå®æãããã
ãã®ã§ããã å³ã¡ãïœâSiã§æ§æãããå å°é»çŽ åã«ãããŠ
ã¯ãè湿æ§ãé£çµç¹°ãè¿ã䜿çšç¹æ§ãé»æ°èå§
æ§ã䜿çšç°å¢ç¹æ§ãããã³èä¹ æ§çãåäžããã
ç®çã§ãããããä¿è·å±€ãšããŠã®æ©èœãæãããš
åæã«ãèªç±è¡šé¢åŽããã®é»è·ã®æ³šå ¥ãé»æ¢ãã
æ©èœãæããè¡šé¢å±€ãèšããå¿ èŠãããããã®ã
ããªè¡šé¢å±€ã¯ãã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ææã«ççŽ
ååãæ§é çã«å°å ¥ãããããããããççŽ åã¢
ã¢ã«ãã¢ã¹ã·ãªã³ã³ïŒä»¥äžããïœâSiCããšè¡šèš
ãããããçšããããšã«ããéæã§ããã ãããã該ïœâSiCãããªãè¡šé¢å±€ã圢æãã
ããå Žåãæ¬ é¥å¯åºŠãå°ããç·»å¯ãªïœâSiCèã
圢æãããããšåž¯é»æ§ã¯åäžããããåèšã®è«žç¹
æ§ãåäžãããããšããæ©èœãå¹ççã«éæãåŸ
ãã®ã«å åãªèåãšãªããŸã§ãã®ãããªïœâSiC
èã圢æãããšã局圢æã«æéãããããšåæ
ã«ãæ®çé»äœãçãæããšããåé¡ãããããã
ããæ®çé»äœã®çºçãšããåé¡ãåé¿ããããã«
èåãèãããå Žåã«ã¯ãèä¹ æ§ãªã©ãäœäžãã
ç»åæ¬ é¥ãçããçµæãšãªãã æ¬çºæã¯äžè¿°ã®åé¡ã解決ããããç 究ãç¶ã
ããšãããïœâSiCã§æ§æãããè¡šé¢å±€ãã以äž
ã®ãããªç¹æ§ãæããäžéšé åãšäžéšé åãšãã
ãªãäºå±€æ§æãšããããšã«ãããäžè¿°ã®åé¡ã解
決ãåŸããšããç¥èŠãåŸãã å³ã¡ãæ¬çºæã®å å°é»çŽ åã¯ãæ¯æäœãšã該æ¯
æäœäžã«ã·ãªã³ã³ååãæ¯äœãšãäŒå°æ§ãå¶åŸ¡ã
ãç©è³ªãå«æããéæ¶è³ªææããæ§æããã第äž
ã®å±€ãšãã·ãªã³ã³ååãšæ¯äœãšããéæ¶è³ªææã
ãæ§æããå å°é»æ§ãæãã第äºã®å±€ãšãã·ãªã³
ã³ååãæ¯äœãšãççŽ ååãå«æããéæ¶è³ªææ
ã§æ§æããã第äžã®å±€ãšãç©å±€ãããŠãªãå å容
å±€ãšãããªãå å°é»çŽ åã«ãããŠãåèšç¬¬äžã®å±€
ããæ¬ é¥å¯åºŠãïŒÃ1018cm-3ïŒESRã·ã°ãã«ïŒä»¥
äžã§å±€åã0.05ã0.2ÎŒã§ããäžéšé åãšãæ¬ é¥å¯
床ãïŒÃ1018cm-3ïŒESRã·ã°ãã«ïŒä»¥äžã§äœç©æµ
æãïŒÃ1012Ωã»cm以äžã§ããäžéšé åãšãããª
ãäºå±€æ§æãšããããšãç¹åŸŽãšãããã®ã§ããã æ¬çºæã®å å°é»çŽ åã¯ãè¡šé¢å±€ã§ããåèšç¬¬äž
ã®å±€ã®äžéšé åã®ïœâSiCå±€ã®æ¬ é¥å¯åºŠãäžè¿°ã
ãåŠãæ¯èŒç倧ããããããšã§æ¬ é¥æºäœãä»ããŠ
é»è·ã移åãæããªããããçšåºŠé»è·ã®ç§»åãå¯
èœãšãªãããã®çµæãè¡šé¢ã«äžèŠãªé»è·ãæ®ãã
ãã«çºçããæ®çé»äœãçºçãã«ãããªãããŸ
ããæ®çé»äœã®çºçãé²æ¢ã§ããããšã¯ãè¡šé¢å±€
ã§ãã第äžã®å±€ãåŸæ¥ã®ããã«æ®çé»äœã®é²æ¢ãš
ããç¹ããèãããå¿ èŠããªããªãã®ã§ãèä¹ æ§
ãæèæã®ãã³ããŒã«ãªã©ã«èµ·å ããç»åæ¬ é¥ã®
é€å»ã«ããé«ç»è³ªåãªã©ã®è«žç¹æ§ãåäžãããã®
ã«å åãªèåãšããããšãã§ããã äœããäžéšé åã®ïœâSiCå±€ã®æµæãäœããšè¡š
é¢ã®é»è·ã®æšªæ¹åãžã®ç§»åãªã©ã«èµ·å ããç»åã
ã±ãçããåå ãšãªããããäžéšé åã®ïœâSiC
å±€ã®æµæã¯äžè¿°ããåŠãããçšåºŠé«ãããããäž
æ¹ãäžéšé åã®ïœâSiå±€ã¯äžè¿°ããåŠãæ¬ é¥å¯åºŠ
ãå°ããç·»å¯ãªãã®ãšããããšã«ãã€ãŠãè¡šé¢å±€
ã«å¿ èŠãšãããé»æ°æµææ§ã垯é»èœã®åäžã確ä¿
ãããšãšãã«ã第äžã®å±€ãèšãããã第äºã®å±€ãš
ã®å¯çæ§ãåäžãããããšãã§ããããã®ç¹å ·äœ
çã«ã¯ãäžéšé åãäžè¿°ã®åŠãã®ïœâSiCã§æ§æ
ããããšã«ãã€ãŠãé»è·ãæ¯èŒç移åãã«ããã
ãããšãã§ãããã®ãã垯é»æã«ãããäžèŠãªé»
è·ã®æ³šå ¥ãå¹æçã«é»æ¢ããã垯é»ç¹æ§ãåäžã
ãã æŽã«äžéšé åã®èåã0.05ã20ÎŒãšããããšã«
ãããèªç±è¡šé¢åŽããã®é»è·ã®æ³šå ¥ãé»æ¢ããæ©
èœãå¹ççã«éæãããåæã«æ®çé»äœã®çºçã
é²æ¢ã§ããã ç¹ã«äžè¿°ããåŠããäžéšé åãšäžéšé åãæã
ã第äžã®å±€ãèšããããšã§æ¯æäœäžã«äžè¿°ããåŠ
ãã®ç¹å®ã®ç¬¬äžã®å±€ã第äºã®å±€ãšãé ã«èšããå
å°é»çŽ åã®æããŠãã垯é»ç¹æ§ãé»æ°èå§æ§ãæ
床çã ã®ç¹æ§ãæãªãããšãªããããäžå±€ã®åž¯é»
ç¹æ§ãé»æ°èå§æ§ãæ®çé»äœç¹æ§ãåäžãããã°
ããããåŸæ¥ã®ïœâSiCè¡šé¢å±€ãèšããå Žåã«èŒ
ã¹ãŠãäžè¿°ããããã«è«žç¹æ§ã®äžå±€ã®åäžãã¯ã
ãããå ããŠå å°é»çŽ åãšããŠã®äžå±€ã®èä¹ æ§ã®
åäžãªã©ããéæããããšãã§ããã æŽã«ãæ¬çºæã®å å°é»çŽ åã¯ãäžè¿°ããåŠãã
ç¹å®ã®äžéšé åãšç¹å®ã®äžéšé åãæãã第äžã®
å±€ãè¡šé¢å±€ãšããŠæããããšãããé»è·æ³šå ¥é»æ¢
ãšæ®çé»äœã®é€å»ãèä¹ æ§ã®åäžãšæ®çé»äœã®é€
å»ãç»åæ¬ é¥ã®é€å»ãããŠæ®çé»äœã®é€å»ãéæ
ãããè«žæ§èœåã³è«žç¹æ§ã®æ¥µããŠãã©ã³ã¹ã®ãšã
ããã®ã§ããã 以äžãå³é¢ã«ããæ¬çºæã®å å°é»çŽ åã®å ·äœç
å±€æ§æå 容ã«ã€ããŠãã詳ãã説æããã 第ïŒãïŒå³ã¯æ¬çºæã®å å°é»çŽ åã®å±€æ§æã説
æããããã®æš¡åŒå³ã§ãããåå³ã«ãããŠïŒïŒïŒ
ã¯å å°é»çŽ åãïŒïŒïŒã¯æ¯æäœãïŒïŒïŒã¯ç¬¬äžã®
å±€ãïŒïŒïŒã¯ç¬¬äºã®å±€ãïŒïŒïŒã¯ç¬¬äžã®å±€ãïŒïŒ
ïŒã¯èªç±è¡šé¢ãïŒïŒïŒã¯äžéšé åãïŒïŒïŒã¯äžéš
é åã瀺ãã æ¯æäœ æ¬çºæã«çšããæ¯æäœïŒïŒïŒã¯ãå°é»æ§ã®ãã®
ã§ãã€ãŠãé»æ°çµ¶çžæ§ã®ãã®ã§ãã€ãŠããããå°
é»æ§æ¯æäœãšããŠã¯ãäŸãã°ãNiCrãã¹ãã³ã¬
ã¹ãAlãCrãMoãAuãNbãTaããTiãPtã
Pbãªã©ã®éå±ãŸãã¯ãããã®åéãæããããã
é»æ°çµ¶çžæ§æ¯æäœãšããŠã¯ãããªãšã¹ãã«ãããª
ãšãã¬ã³ãããªã«ãŒãããŒããã»ã«ããŒã¹ã¢ã»ã
ãŒããããªãããã¬ã³ãããªå¡©åããã«ãããªå¡©
åãããªãã³ãããªã¹ãã¬ã³ãããªã¢ãããªã©ã®
åææš¹èã®ãã€ã«ã ãŸãã¯ã·ãŒããã¬ã©ã¹ãã»ã©
ããã¯ãçŽãªã©ãæããããããããã®é»æ°çµ¶çž
æ§æ¯æäœã¯ã奜é©ã«ã¯å°ãªããšããã®äžæ¹ã®è¡šé¢
ãå°é»åŠçãã該å°é»åŠçãããè¡šé¢åŽã«å å容
å±€ãèšããã®ãæãŸããã äŸãã°ãã¬ã©ã¹ã§ããã°ãã®è¡šé¢ã«ãNiCrã
AlãCrãMoãAuãIrãNbãTaããTiãPtã
PdãIn2O3ãSnO2ãITOïŒIn2O3ïŒSnO2ïŒãªã©ã
ãæãèèãèšããããšã«ãã€ãŠå°é»æ§ãä»äž
ããæãã¯ããªãšã¹ãã«ãã€ã«ã ãªã©ã®åææš¹è
ãã€ã«ã ã§ããã°ãNiCrãAlãAgãPbãZnã
NiãAuãCrãMoãIrãNbãTaããTiãPt
ãªã©ã®éå±ã®èèãç空èžçãé»åããŒã èžçã
ã¹ããã¿ãªã³ã°ãªã©ã§ãã®è¡šé¢ã«èšãããŸãã¯å
èšéå±ã§ãã®è¡šé¢ãã©ãããŒãåŠçããŠããã®è¡š
é¢ã«å°é»æ§ãä»äžãããæ¯æäœã®åœ¢ç¶ã¯ãåç
ç¶ããã«ãç¶ãæ¿ç¶ãªã©ä»»æã®åœ¢ç¶ã䜿çšå¯èœã§
ãããçšéãææã«ãã€ãŠããã®åœ¢ç¶ã¯é©å®ã«æ±º
ããããšã®ã§ãããã®ã§ããããäŸãã°ãé»åå
ççšå圢æçŽ åãšããŠäœ¿çšããã®ã§ããã°ãé£ç¶
é«éè€åã®å Žåã«ã¯ãç¡ç«¯ãã«ãç¶ãŸãã¯åçç¶
ãšããã®ãæãŸãããæ¯æäœã®åãã¯ãææéã
ã®å å°é»çŽ åã圢æãããããã«é©å®æ±ºå®ãã
ããå å°é»çŽ åãšããŠå¯ææ§ãèŠæ±ãããå Žåã«
ã¯ãæ¯æäœãšããŠã®æ©èœãå åçºæ®ãããç¯å²å
ã§å¯èœãªéãèãããããšãã§ãããããããªã
ããæ¯æäœã®è£œé åã³åæ±ãäžãæ©æ¢°ç匷床ãªã©
ã®ç¹ãããéåžžã¯ã10Ό以äžã«ãããã 第äžã®å±€ 第äžã®å±€ïŒïŒïŒã¯ãåèšæ¯æäœïŒïŒïŒäžã«èšã
ããã®ã§ãã€ãŠãäŒå°æ§ãå¶åŸ¡ããç©è³ªãå«æã
ãã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ãŸãã¯æ°ŽçŽ åã¢ã¢ã«ãã¢
ã¹ã·ãªã³ã³ã以äžãïœâSiM(H)ãïŒäœããïŒã¯äŒ
å°æ§ãå¶åŸ¡ããç©è³ªãè¡šãããïŒããšè¡šèšãããã
ã§æ§æãããã åèšã®äŒå°æ§ãå¶åŸ¡ããç©è³ªãšããŠã¯ãéå°äœ
åéã«ãããŠãããããããäžçŽç©ãæããããš
ãã§ããïœåäŒå°æ§ãäžããåšæåŸè¡šç¬¬æã«å±
ããååïŒä»¥äžåã«ã第æååããšç§°ããïŒããŸ
ãã¯ãïœåäŒå°æ§ãäžããåšæåŸè¡šç¬¬æã«å±ã
ãååïŒä»¥äžåã«ã第æååããšç§°ããïŒãçš
ãããå ·äœçã«ã¯ã第æååãšããŠã¯ãïŒç¡Œ
çŽ ïŒãAlïŒã¢ã«ãããŠã ïŒãGaïŒã¬ãªãŠã ïŒInïŒã€ã³
ãžãŠã ïŒãTlïŒã¿ãªãŠã ïŒãªã©ãæãããããã
ç¹ã«å¥œãŸããã¯ããGaãçšããããŸãã第
æååãšããŠã¯ãïŒçïŒãAsïŒç çŽ ïŒãSbïŒã¢ã³ã
ã¢ã³ïŒãBuïŒãã¹ãã¹ïŒãªã©ãæããããããç¹
ã«å¥œãŸããã¯ããAsãçšããã 第äžã®å±€ïŒïŒïŒã¯ãäŒå°æ§ãå¶åŸ¡ããç©è³ªã§ã
ããšããã®ç¬¬æååãŸãã¯ç¬¬æååãå«æã
ãããããšã«ãããæ¯æäœåŽããå å容局äžãžã®
é»è·ã®æ³šå ¥ãé»æ¢ããé»è·é»æ¢å±€ã圢æããæ©èœ
ãæãããšãšãã«é»ç£æ³¢ç §å°ã«ãã€ãŠç¬¬äºã®å±€äž
ã«çããæ¯æäœåŽã«åãã€ãŠç§»åããé»è·ã®ç¬¬äº
ã®å±€ããæ¯æåŽãžã®ééãèš±ãæ©èœãæããŠã
ãã 第äžã®å±€ïŒïŒïŒã«å«æãããã第æååãŸã
ã¯ç¬¬æååã®éã¯ãéåžžã¯ïŒÃ10ãïŒÃ
104atomic ppmã奜ãŸããã¯ïŒÃ10ãïŒÃ
104atomic ppmãæé©ã«ã¯ïŒÃ102ãïŒÃ
103atomic ppmãšããã®ãæãŸããã æŽã«å¿ èŠã«å¿ããŠå«æããããæ°ŽçŽ ååã®é
ã¯ãéåžžã¯ïŒÃ10-2ãïŒÃ10atomicïŒ ã奜ãŸã
ãã¯ïŒÃ10-2ãïŒÃ10atomicïŒ ãæé©ã«ã¯ïŒÃ
10-1ã25atomicïŒ ãšããã®ãæãŸããã 第äžã®å±€åã¯ãæ¬çºæã®ç®çãå¹ççã«éæã
ãããã®éèŠãªå åã§ããã奜ãŸããã¯30â«ã
1000â«ãšããã®ãæãŸããã 第äºã®å±€ 第äºã®å±€ïŒïŒïŒã¯ãåè¿°ã®ç¬¬äžã®å±€ïŒïŒïŒäžã«
èšãããã®ã§ãã€ãŠãã·ãªã³ã³ååãæ¯äœãšãã
å¿ èŠã«å¿ããŠæ°ŽçŽ åååã¯ïŒåã³ããã²ã³ååã
å«æããéæ¶è³ªææãå³ã¡ïœâSiïŒïŒšãïŒã§æ§
æãããŠããã 第äºã®å±€ã«å«æããããæ°ŽçŽ åå(H)ã®éããŸã
ã¯ããã²ã³åå(X)ã®éããããã¯æ°ŽçŽ ååãšãã
ã²ã³ååã®éã®åã¯ãéåžžã¯ïŒÃ10-2ãïŒÃ
10atomicïŒ ã奜ãŸããã¯ïŒÃ10-2ãïŒÃ
10atomicïŒ ãæé©ã«ã¯ïŒÃ10-1ã25atomicïŒ ãš
ããã 第äºã®å±€ïŒïŒïŒã®å±€åã¯ãæ¬çºæã®ç®çãå¹ç
çã«éæããããã®éèŠãªå åã®ïŒã€ã§ãããæ
æã®ç®çã«å¿ããŠé©å®æ±ºå®ãããã®ã§ããããŸ
ãã該局ã«å«æããããæ°ŽçŽ åååã¯ïŒåã³ãã
ã²ã³ååã®éããããã¯ä»ã®å±€ã®å±€åãšã®é¢ä¿ã«
ãããŠãèŠæ±ãããç¹æ§ã«å¿ããŠçžäºçãã€ææ©
çé¢é£æ§ã®äžã«æ±ºå®ããå¿ èŠããããæŽã«ãçç£
æ§ãéç£æ§ããå å³ããçµæžæ§ã®ç¹ã«ãããŠãè
æ ®ããå¿ èŠããããããããããšãããéåžžã¯ïŒ
ã100ÎŒã奜ãŸããã¯ïŒã80ÎŒãæé©ã«ã¯ïŒã50ÎŒ
ãšããã®ãæãŸããã 第äžã®å±€ 第äžã®å±€ïŒïŒïŒã¯ãæ¬çºæã®å å°é»çŽ åã®è湿
æ§ãé£ç¶ç¹°è¿ã䜿çšç¹æ§ãé»æ°çèå§æ§ã䜿çšç°
å¢ç¹æ§ãããã³èä¹ æ§ãªã©ãåäžããããšãšã
ã«ãèªç±è¡šé¢ïŒïŒïŒåŽããã®é»è·ã®æ³šå ¥ãé»æ¢ã
ãæ©èœãæããå±€ã§ãã€ãŠãççŽ ãå«æããã¢ã¢
ã«ãã¢ã¹ã·ãªã³ã³ãå³ã¡ïœâSiCã§æ§æãããã
ãããŠã該第äžã®å±€ïŒïŒïŒã®äžéšé åïŒïŒïŒã¯äœ
é床ã§äœæããããšã«ããæ¬ é¥å¯åºŠãïŒÃ1018cm
-3ïŒESRã·ã°ãã«ïŒä»¥äžãšãªãããã«ãããã®å±€
åã0.05ã0.2ÎŒã§ããããã«ããã ãŸããäžéšé åïŒïŒïŒã¯æ¯èŒçé«é床ã§äœæã
ãããšã«ããæ¬ é¥å¯åºŠãïŒÃ1018cm-3ïŒESRã·ã°
ãã«ïŒä»¥äžãšãªãããã«ãããã®äœç©æµæãïŒÃ
1012Ωã»cm以äžã§ããããã«ããã æ¬çºæã®å å°é»çŽ åã¯äžè¿°ã®ããšããïœâSiC
ã§æ§æããã第äžã®å±€ããæ¬ é¥å¯åºŠãšäœç©æµæã
ç°ãªãäºå±€æ§æãšããããšã«ãããåè¿°ã®ç®çã
éæã§ãããã®ã§ãããã第äžã®å±€ã®äžéšé åïŒ
ïŒïŒããã³äžéšé åïŒïŒïŒã«å«æããããççŽ å
åã®éã¯ãéåžžïŒÃ10-3ã90atomicïŒ ãšãã奜
ãŸããã¯ïŒã90atomicïŒ ãæé©ã«ã¯10ã
80atomicïŒ ãšããã æ¬çºæã®å å°é»çŽ åã¯åè¿°ã®ãããªå±€æ§æãšã
ãããšã«ãããã¢ã¢ã«ãã¢ã¹ã·ãªã³ã³ã§æ§æãã
ãå å容局ãæããåŸæ¥ã®å å°é»çŽ åã®è«žåé¡ã®
ç·ãŠã解決ãã極ããŠåªããé»æ°çãå åŠçãå
å°é»çç¹æ§ãé»æ°çèå§æ§åã³äœ¿çšç°å¢ç¹æ§ã瀺
ããç¹ã«ãé»ååççšå圢æçŽ åãšããŠé©çšãã
å Žåã«ã¯ãç»å圢æãžã®æ®çé»äœã®åœ±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«åªããæ¿åºŠãé«ããããŒãããŒã³ãé®®
æã«åºãŠããã€è§£å床ã®é«ããé«å質ã®ç»åãå®
å®ããŠç¹°è¿ãåŸãããšãã§ããã 次ã«ãæ¬çºæã®å å容局ã®åœ¢ææ¹æ³ã«ã€ããŠèª¬
æããã æ¬çºæã®å å容局ã¯ãïœâSiïŒïŒšãïŒçªçŽ å
åã第æååãŸãã¯ç¬¬æååãå«æãããã
éæ¶è³ªææã§æ§æãããå±€ãçµã¿åãããåè¿°ã®
ããšãç¹å®ã®å±€æ§æãšãããã®ã§ããããããã
ã®å±€ã¯ããããããã°ããŒæŸé»æ³ãã¹ããã¿ãªã³
ã°æ³ããããã¯ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ãªã©ã®æŸ
é»çŸè±¡ãå©çšããç空å ç©æ³ã«ãã€ãŠåœ¢æã§ã
ãããããã®æ¹æ³ã¯ã補é æ¡ä»¶ãèšåè³æ¬æäžã®
è² è·çšåºŠã補é èŠæš¡ã補é ãããå å°é»çŽ åã«èŠ
æ±ãããç¹æ§ãªã©ã®èŠå ã«ãã€ãŠãé©å®éžæããŠ
çšããããææã®ç¹æ§ãæããå å°é»çŽ åã補é
ããã«åœãã€ãŠã®æ¡ä»¶ã®å¶åŸ¡ãæ¯èŒç容æã§ã
ããã·ãªã³ã³ååãšãšãã«æ°ŽçŽ åååã³ïŒåã¯ã
ãã²ã³ååã®å°å ¥ã容æã«è¡ãåŸããªã©ã®ããšã
ãããŠãã°ããŒæŸé»æ³ããããã¯ã¹ããã¿ãªã³ã°
æ³ã奜é©ã§ããããããŠãã°ããŒæŸé»æ³ãšã¹ãã
ã¿ãªã³ã°æ³ãšãåäžè£ 眮系å ã§äœµçšããŠåœ¢æãã
ããšãã§ãããäŸãã°ãã°ããŒæŸé»æ³ã«ãã€ãŠã
ïœâSiïŒïŒšãïŒã§æ§æãããå±€ã圢æããã«ã¯ã
åºæ¬çã«ã¯ã·ãªã³ã³ååïŒSiïŒãäŸçµŠãåŸãSiäŸ
絊çšã®åæã¬ã¹ãšå ±ã«ãæ°ŽçŽ åå(H)å°å ¥çšã®å
ã¯ïŒåã³ããã²ã³åå(X)å°å ¥çšã®åæã¬ã¹ããå
éšãæžå§ã«ãåŸãå ç©å®€å ã«å°å ¥ããŠã該å ç©å®€
å ã«ã°ããŒæŸé»ãçèµ·ãããäºãæå®äœçœ®ã«èšçœ®
ããæå®ã®æ¯æäœè¡šé¢äžã«ïœâSiïŒïŒšãïŒãã
æãå±€ã圢æããã å¿ èŠã«å¿ããŠå±€äžã«å«æããããããã²ã³åå
(X)ãšããŠã¯ãå ·äœçã«ã¯ããçŽ ãå¡©çŽ ãèçŽ ããš
ãŠçŽ ãæããããæ®ã«ããçŽ ãå¡©çŽ ã奜ãŸããã åèšSiäŸçµŠçšã®åæã¬ã¹ãšããŠã¯ãSiH4ã
Si2H6ãSi3H8ãSi4H10ãªã©ã®ã¬ã¹ç¶æ ã®ãŸãã¯
ã¬ã¹åãåŸãæ°ŽçŽ åç¡ çŽ ïŒã·ã©ã³é¡ïŒãæãã
ããç¹ã«ã局圢æäœæ¥ã®ãæããSiäŸçµŠå¹çã®è¯
ããªã©ã®ç¹ã§ãSiH4ãSi2H6ã奜ãŸããã ãŸããåèšããã²ã³ååå°å ¥çšã®åæã¬ã¹ãšã
ãŠã¯ãå€ãã®ããã²ã³ååç©ãæããããäŸãã°
ããã²ã³ã¬ã¹ãããã²ã³åç©ãããã²ã³éåå
ç©ãããã²ã³ã§çœ®æãããã·ã©ã³èªå°äœãªã©ã®ã¬
ã¹ç¶æ ã®ãŸãã¯ã¬ã¹åãåŸãããã²ã³ååç©ã奜
ãŸãããå ·äœçã«ã¯ããçŽ ãå¡©çŽ ãèçŽ ããšãŠçŽ
ã®ããã²ã³ã¬ã¹ãBrFãClFãClF3ãBrF5ã
BrF3IF7ãIClãIBrãªã©ã®ããã²ã³éååç©ãã
ãã³SiF4ãSi2F6ãSiCl4ãSiBr4ãªã©ã®ããã²ã³
åç¡ çŽ ãªã©ãæãããããäžè¿°ã®ããšãããã²ã³
åç¡ çŽ ã®ã¬ã¹ç¶æ ã®ãŸãã¯ã¬ã¹åãåŸããã®ãçš
ããå Žåã«ã¯ãSiäŸçµŠçšã®åæã¬ã¹ãå¥é䜿çšã
ãããšãªãããŠãããã²ã³ååãå«æããïœâSi
ã§æ§æãããå±€ã圢æã§ããã®ã§ãç¹ã«æå¹ã§ã
ãã ãŸããåèšæ°ŽçŽ ååäŸçµŠçšã®åæã¬ã¹ãšããŠ
ã¯ãæ°ŽçŽ ã¬ã¹ãHFãHClãHBrãHIãªã©ã®ãã
ã²ã³åç©ãSiH4ãSi2H6ãSi3H8ãSi4H10ãªã©ã®
æ°ŽçŽ åç¡ çŽ ããããã¯SiH2F2ãSiH2I2ã
SiH2Cl2ãSiHCl3ãSiH2Br2ãSiHBr3ãªã©ã®ãã
ã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãªã©ã®ã¬ã¹ç¶æ ã®ãŸãã¯ã¬ã¹
åãåŸããã®ãçšããããšãã§ãããããã®åæ
ã¬ã¹ãçšããå Žåã«ã¯ãé»æ°çãããã¯å é»çç¹
æ§ã®å¶åŸ¡ãšããç¹ã§æ¥µããŠæå¹ã§ãããšããã®æ°Ž
çŽ åå(H)ã®å«æéã®å¶åŸ¡ã容æã«è¡ãããšãã§ã
ããããæå¹ã§ããããããŠãåèšããã²ã³åæ°Ž
çŽ ãŸãã¯åèšããã²ã³çœ®ææ°ŽçŽ åç¡ çŽ ãçšããå Ž
åã«ã¯ããã²ã³ååã®å°å ¥ãšåæã«æ°ŽçŽ åå(H)ã
å°å ¥ãããã®ã§ãç¹ã«æå¹ã§ããã ããã²ã³åå(X)ã®éãŸãã¯æ°ŽçŽ ååã®éãŸãã¯
ããã²ã³ååãšæ°ŽçŽ ååã®éã®åïŒïŒžïŒïŒšïŒã¯ã
éåžžã¯0.01ã40atomicïŒ ã奜ãŸããã¯0.05ã
30atomicïŒ ãæé©ã«ã¯0.1ã25atomicïŒ ãšããã®
ãæãŸãããå±€äžã«å«æããããæ°ŽçŽ åå(H)å
ã¯ïŒåã³ããã²ã³åå(X)ã®éã®å¶åŸ¡ã¯ãäŸãã°æ¯
æäœæž©åºŠãæ°ŽçŽ åå(H)åã¯ïŒåã³ããã²ã³åå(X)
ãå°å ¥ããããã«çšããåºçºç©è³ªã®å ç©å®€å ãžå°
å ¥ããéãæŸé»é»åãªã©ãå¶åŸ¡ããããšã«ãã€ãŠ
è¡ãããã åå¿ã¹ããã¿ãªã³ã°æ³ãããã¯ã€ãªã³ãã¬ãŒã
ã€ã³ã°æ³ã«äŸã€ãŠïœâSiïŒïŒšãïŒããæãå±€ã
圢æããã«ã¯ãäŸãã°ã¹ããã¿ãªã³ã°æ³ã®å Žåã«
ã¯ãSiããæãã¿ãŒã²ããã䜿çšããŠããããæ
å®ã®ã¬ã¹ãã©ãºãé°å²æ°äžã§ã¹ããã¿ãªã³ã°ãã
ã€ãªã³ãã¬ãŒãã€ã³ã°æ³ã®å Žåã«ã¯ãå€çµæ¶ã·ãª
ã³ã³ãŸãã¯åçµæ¶ã·ãªã³ã³ãèžçºæºãšããŠèžçã
ãŒãã«å容ãããã®ã·ãªã³ã³èžçºæºãæµæå ç±
æ³ããããã¯ãšã¬ã¯ããã³ããŒã æ³ïŒEBæ³ïŒãª
ã©ã«ãã€ãŠå ç±èžçºããé£ç¿èžçºç©ãæå®ã®ã¬ã¹
ãã©ãºãé°å²æ°äžãééãããããšã§è¡ãããšã
ã§ããã ãã®éãã¹ããã¿ãªã³ã°æ³ãã€ãªã³ãã¬ãŒãã€
ã³ã°æ³ã®äœãã®å Žåã§ã圢æãããå±€äžã«ããã²
ã³ååãå°å ¥ããã«ã€ããŠã¯ãåèšã®ããã²ã³å
åç©ãŸãã¯åèšã®ããã²ã³ååãå«ãç¡ çŽ ååç©
ã®ã¬ã¹ãå ç©å®€äžã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°
å²æ°ã圢æããŠããã°ããã ãŸããæ°ŽçŽ ååãå°å ¥ããå Žåã«ã¯ãæ°ŽçŽ åå
å°å ¥çšã®åæã¬ã¹ãäŸãã°ãH2ãããã¯åèšã
ãã·ã©ã³é¡ãªã©ã®ã¬ã¹ãã¹ããã¿ãªã³ã°çšã®å ç©
宀äžã«å°å ¥ããŠè©²ã¬ã¹ã®ãã©ãºãé°å²æ°ã圢æã
ãŠããã°ããã äŸãã°ãåå¿ã¹ããã¿ãªã³ã°æ³ã®å Žåã«ã¯ãSi
ã¿ãŒã²ããã䜿çšããããã²ã³ååå°å ¥çšã®ã¬ã¹
ããã³H2ã¬ã¹ãå¿ èŠã«å¿ããŠHeãArãªã©ã®äžæŽ»
æ§ã¬ã¹ãå«ããŠå ç©å®€å ã«å°å ¥ããŠãã©ãºãé°å²
æ°ã圢æããåèšSiã¿ãŒã²ãããã¹ããã¿ãªã³ã°
ããããšã«ãã€ãŠãæ¯æäœäžã«ïœâSiïŒïŒšãïŒ
ããæãå±€ã圢æããã ã°ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ããããã¯ã€
ãªã³ãã¬ãŒãã€ã³ã°æ³ãçšããŠãïœâSi(H)ã«ãã
ã«ç¬¬æååãŸãã¯ç¬¬æååãå«æããããé
æ¶è³ªææã§æ§æãããå±€ã圢æããã«ã¯ãïœâSi
(H)ã®å±€ã®åœ¢æã®éã«ã第æååãŸãã¯ç¬¬æå
åå°å ¥çšã®åºçºç©è³ªããåè¿°ããïœâSi(H)圢æçš
ã®åºçºç©è³ªãšå ±ã«äœ¿çšããŠã圢æããå±€äžãžã®ã
ããã®éãå¶åŸ¡ããªããå«æããããŠããããšã«
ãã€ãŠè¡ãã äŸãã°ã第æååãŸãã¯ç¬¬æååãå«æã
ãïœâSi(H)ãå³ã¡ãïœâSiM(H)ãã§æ§æããã第
äžã®å±€ãã°ããŒæŸé»æ³ã«ãã€ãŠåœ¢æããã«ã¯ãïœ
âSiM(H)圢æçšã®åæã¬ã¹ããå¿ èŠã«å¿ããŠArã
Heãªã©ã®çšéã¬ã¹ãšæå®éã®æ··åæ¯ã§æ··åããŠã
æ¯æäœïŒïŒïŒã®èšçœ®ããŠããç空å ç©çšã®å ç©å®€
ã«å°å ¥ããå°å ¥ãããã¬ã¹ãã°ããŒæŸé»ãçèµ·ã
ããããšã§ã¬ã¹ãã©ãºãåããŠåèšæ¯æäœäžã«ïœ
âSiM(H)ãå ç©ãããã°ããã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠå ·äœçã«ã¯
ç¡ŒçŽ ååå°å ¥çšãšããŠã¯ãB2H6ãB4H10ã
B5H9ãB5H11ãB6H10ãB6H12ãB6H14ãªã©ã®æ°Ž
çŽ åç¡ŒçŽ ãBF3ãBCl3ãBBr3ãªã©ã®ããã²ã³å
ç¡ŒçŽ ãªã©ãæããããããã®ä»ãAlCl3ãCaCl3ã
GaïŒCHïŒ2ãInCl3ãTlCl3ãªã©ãæããããšãã§
ããã 第æååå°å ¥çšã®åºçºç©è³ªãšããŠãå ·äœçã«
ã¯çååå°å ¥çšãšããŠã¯PH3ãP2H6ãªã©ã®æ°ŽçŽ
åçãPH4IãPF3ãPF5ãPCl3ãPCl5ãPBr3ã
PBr5ãPI3ãªã©ã®ããã²ã³åçãæãããããã
ã®ä»ãAsH3ãAsF3ãAsCl3ãAsBr3ãAsF5ã
SbH3ãSbF5ãSbCl3ãSbCl5ãBiH3ãBiCl3ã
BiBr5ãªã©ã第æååå°å ¥çšã®åºçºç©è³ªã®æå¹
ãªãã®ãšããŠæããããšãã§ããã ãŸããã°ããŒæŸé»æ³ã«ãã第äžã®å±€ã圢æãã
ã«ã¯ãïœâSiC圢æçšã®åæã¬ã¹ããå¿ èŠã«å¿ã
ãŠçšéã¬ã¹ãšæ··åããŠãæ¯æäœïŒïŒïŒã®èšçœ®ããŠ
ããç空å ç©çšã®å ç©å®€ã«å°å ¥ããå°å ¥ãããã¬
ã¹ãã°ããŒæŸé»ãçèµ·ãããããšã§ã¬ã¹ãã©ãºã
åããŠåèšæ¯æäœäžã«æ¢ã«åœ¢æãããŠãã第äºã®
å±€äžã«ïœâSiCå±€ãããªã第äžã®å±€ãå ç©ããã
ã°ããã ïœâSiC局圢æçšã®åæã¬ã¹ãšããŠã¯ãSiã
ã®ããããïŒã€ãããã¯äž¡æ¹ããæ§æååãšãã
ã¬ã¹ç¶ã®ç©è³ªãŸãã¯ã¬ã¹åãåŸãç©è³ªãã¬ã¹åã
ããã®ã§ããã°ããããã®ãã®ã§ãã€ãŠãããã ïœâSiCã§æ§æããã局圢æçšã®åæã¬ã¹ãšã
ãŠæå¹ã«äœ¿çšãããã®ã¯ãSiãšïŒšãšãæ§æååãš
ããSiH4ãSi2H6ãSi3H6ãSi4H10ãªã©ã®ã·ã©ã³
ïŒSilanceïŒé¡ãªã©ã®æ°ŽçŽ åç¡ çŽ ã¬ã¹ããšïŒšãšã
æ§æååãšãããäŸãã°ççŽ æ°ïŒãïŒã®é£œåçå
æ°ŽçŽ ãççŽ æ°ïŒãïŒã®ãšãã¬ã³ç³»çåæ°ŽçŽ ãççŽ
æ°ïŒãïŒã®ã¢ã»ãã¬ã³ç³»çåæ°ŽçŽ ãªã©ãæããã
ãã å ·äœçã«ã¯ã飜åçåæ°ŽçŽ ãšããŠã¯ãã¡ã¿ã³
ïŒCH4ïŒããšã¿ã³ïŒC2H6ïŒããããã³ïŒC3H8ïŒãïœ
âãã¿ã³ïŒïœâC4H10ïŒããã³ã¿ã³ïŒC5H12ïŒããš
ãã¬ã³ç³»çåæ°ŽçŽ ãšããŠã¯ããšãã¬ã³ïŒC2H4ïŒã
ãããã¬ã³ïŒC3H6ïŒãããã³âïŒïŒC4H8ïŒããã
ã³âïŒïŒC4H8ïŒãã€ãœããã¬ã³ïŒC4H8ïŒããã³ã
ã³ïŒC5H10ïŒãã¢ã»ãã¬ã³ç³»çåæ°ŽçŽ ãšããŠã¯ã
ã¢ã»ãã¬ã³ïŒC2H2ïŒãã¡ãã«ã¢ã»ãã¬ã³
ïŒC3H4ïŒãããã³ïŒC4H6ïŒãªã©ãæãããããSi
ãšïŒ£ãšïŒšãšãæ§æååãšããåæã¬ã¹ãšããŠã¯ã
SiïŒCH3ïŒ4ãSiïŒC2H5ïŒ4ãªã©ã®ã±ã€åã¢ã«ãã«ãæ
ããããšãã§ããããããã®åæã¬ã¹ã®ä»ãå°
å ¥çšã®åæã¬ã¹ãšããŠã¯ãã¡ããH2ã䜿çšã§ã
ãã ãŸããã¹ããã¿ãªã³ã°æ³ã«ãã€ãŠïœâSiCã§æ§
æããã第äºã®å±€ã圢æããã«ã¯ãåçµæ¶ãŸãã¯
å€çµæ¶ã®SiãŠãšãŒããŸãã¯ïŒ£ïŒã°ã©ãã¢ã€ãïŒãŠ
ãšãŒãããŸãã¯SiãšïŒ£ãæ··åãããŠå«æãããŠã
ããŠãšãŒããã¿ãŒã²ãããšããŠãããããææã®
ã¬ã¹é°å²æ°äžã§ã¹ããã¿ãªã³ã°ããããšã«ãã€ãŠ
è¡ãã äŸãã°SiãŠãšãŒããã¿ãŒã²ãããšããŠäœ¿çšãã
å Žåã«ã¯ãççŽ ååãå°å ¥ããããã®åæã¬ã¹ã
å¿ èŠã«å¿ããŠArãHeãªã©ã®çšéã¬ã¹ã§çšéã
ãŠãã¹ããã¿ãªã³ã°çšã®å ç©å®€å ã«å°å ¥ãããã
ãã®ã¬ã¹ã®ã¬ã¹ãã©ãºãã圢æããŠSiãŠãšãŒãã
ã¹ããã¿ãªã³ã°ããã°ããã ãŸããSiãšïŒ£ãšã¯å¥ã ã®ã¿ãŒã²ãããšãããã
ãããã¯SiãšïŒ£ã®æ··åããïŒæã®ã¿ãŒã²ãããšã
ãŠäœ¿çšããå Žåã«ã¯ãããããã¹ããã¿ãªã³ã°çš
ã®å ç©å®€å ã«å°å ¥ããã¬ã¹ãã©ãºãã圢æããŠã¹
ããã¿ãªã³ã°ããã°ããã ã°ããŒæŸé»æ³ãã¹ããã¿ãªã³ã°æ³ããããã¯ã€
ãªã³ãã¬ãŒãã€ã³ã°æ³ã«ããæ¬çºæã®å å°é»çŽ å
ã圢æããå ŽåãïœâSiïŒïŒšãïŒã«å°å ¥ãã第
æååãŸãã¯ç¬¬æååãããã¯çªçŽ ååã®å«
æéã¯ãå ç©äžã«æµå ¥ãããåºçºç©è³ªã®ã¬ã¹æµ
éãã¬ã¹æµéæ¯ãæŸé»ãã¯ãŒãæ¯æäœæž©åºŠãå ç©
宀å ã®å§åãªã©ãå¶åŸ¡ããããšã«ãã€ãŠä»»æã«å¶
埡ã§ããã æ¯æäœæž©åºŠã¯éåžžã®å Žåã50ã350âã奜é©ã«
ã¯100ã250âãšããã®ãæãŸãããã®ã§ãããæŸ
é»ãã¯ãŒæ¡ä»¶ã¯ãããããã®å±€ã®æ©èœã«èæ ®ãã¯
ãã€ãŠãé©å®éžæãããå ·äœçã«ã¯ã0.005ã
50WïŒcm2ã®ç¯å²ã«ããã®ãéåžžã§ãããããã奜
ãŸããã¯ã0.01ã30WïŒcm2ãç¹ã«å¥œãŸããã¯0.01
ã20WïŒcm2ã®ç¯å²ã§ãããæ¯æäœæž©åºŠãæŸé»ãã¯
ãŒã®æãŸããæ°å€ç¯å²ãšããŠåèšããç¯å²ã®å€ã
æãããããããããã®å±€äœæãã¢ã¯ã¿ãŒã¯ãé
åžžã¯ç¬ç«çã«å¥ã ã«æ±ºãããããã®ã§ã¯ãªããæ
æç¹æ§ã®ã¢ã¢ã«ãã¢ã¹å±€ã圢æãã¹ãçžäºçãã€
ææ©çé¢é£æ§ã«åºã¥ããŠãåå±€äœæãã¢ã¯ã¿ãŒã®
æé©å€ã決ããã®ãæãŸããã ãå®æœäŸã 以äžãæ¬çºæãå®æœäŸïŒä¹è³ïŒã«åŸã€ãŠããã
詳现ã«èª¬æããããæ¬çºæã¯ããçã«ãã€ãŠéå®
ããããã®ã§ã¯ãªãã åå®æœäŸã«ãããŠã¯ã第äžã®å±€ããã³ç¬¬äºã®å±€
ãã°ããŒæŸé»æ³ãçšããŠåœ¢æããã第ïŒå³ã¯ã°ã
ãŒæŸé»æ³ã«ããæ¬çºæã®å å°é»çŽ åã®è£œé è£ çœ®ã§
ããã å³äžã®ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒ
ïŒã®ã¬ã¹ãã³ãã«ã¯ãæ¬çºæã®å€«ã ã®å±€ã圢æã
ãããã®åæã¬ã¹ãå¯å°ãããŠããããã®äžäŸãš
ããŠãããšãã°ïŒïŒïŒã¯Heã§çšéãããSiH4ã¬
ã¹ïŒçŽåºŠ99.999ïŒ ã以äžSiH4ïŒHeãšç¥ãïŒãã³
ããïŒïŒïŒã¯Heã§çšéãããPH3ã¬ã¹ïŒçŽåºŠ
99.999ïŒ ã以äžPH3ïŒHeãšç¥ãïŒãã³ããïŒïŒ
ïŒã¯Heã§çšéãããB2H6ã¬ã¹ïŒçŽåºŠ99.99ïŒ ã
以äžB2H6ïŒHeãšç¥ãïŒãã³ããïŒïŒïŒã¯ã¬ã¹
ïŒçŽåºŠ99.999ïŒ ïŒãã³ããïŒïŒïŒã¯CH4ã¬ã¹ãã³
ãã§ããã 圢æãããå±€äžã«ããã²ã³ååãå°å ¥ããå Žå
ã«ã¯ãSiH4ã¬ã¹ã«ä»£ããŠãäŸãã°ãSiF4ã¬ã¹ã
çšããããã«ãã³ãã代ããã°ããã ãããã®ã¬ã¹ãåå¿å®€ïŒïŒïŒã«æµå ¥ãããã«ã¯
ã¬ã¹ãã³ãïŒïŒïŒãïŒïŒïŒã®ãã«ãïŒïŒïŒãïŒïŒ
ïŒããªãŒã¯ãã«ãïŒïŒïŒãéããããŠããããšã
確èªãããŸããæµå ¥ãã«ãïŒïŒïŒãïŒïŒïŒãæµåº
ãã«ãïŒïŒïŒãïŒïŒïŒãè£å©ãã«ãïŒïŒïŒïŒïŒïŒ
ïŒãéãããŠããããšã確èªããŠãå ãã¡ã€ã³ã
ã«ãïŒïŒïŒãéããŠåå¿å®€ïŒïŒïŒãã¬ã¹é 管å ã
ææ°ããã次ã«ç空èšïŒïŒïŒã®èªã¿ãçŽïŒÃ
10-6Torrã«ãªã€ãæç¹ã§ãè£å©ãã«ãïŒïŒïŒïŒ
ïŒïŒïŒãæµåºãã«ãïŒïŒïŒãïŒïŒïŒãéããã åºäœã·ãªã³ããŒïŒïŒïŒäžã«å å容局ã圢æãã
å Žåã®äžäŸãããããã¬ã¹ãã³ãïŒïŒïŒãã
SiH4ïŒHeã¬ã¹ãã¬ã¹ãã³ãïŒïŒïŒããB2H6ïŒ
Heã¬ã¹ãã¬ã¹ãã³ãïŒïŒïŒããH2ã¬ã¹ããã«ã
ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒãéããŠåºå£å§ã²ãŒãžïŒ
ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒã®å§ãïŒKgïŒcm2ã«èª¿æŽãã
æµå ¥ãã«ãïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒãåŸã ã«éã
ãŠããã¹ããã³ã³ãããŒã©ïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒ
ïŒå ã«æµå ¥ããããåŒãç¶ããŠæµåºãã«ãïŒïŒ
ïŒïŒïŒïŒïŒïŒïŒïŒïŒãè£å©ãã«ãïŒïŒïŒãåŸã ã«
éããŠã¬ã¹ãåå¿å®€ïŒïŒïŒå ã«æµå ¥ãããããã®
ãšãã®SiH4ïŒHeã¬ã¹æµéãšB2H6ïŒHeã¬ã¹æµé
ãšH2ã¬ã¹æµéã®æ¯ãææã®å€ã«ãªãããã«æµåº
ãã«ãïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒïŒã調æŽãããŸãã
åå¿å®€ïŒïŒïŒå ã®å§åãææã®å€ã«ãªãããã«ç
空èšïŒïŒïŒã®èªã¿ãèŠãªããã¡ã€ã³ãã«ãïŒïŒïŒ
ã®éå£ã調æŽããããããŠåºäœã·ãªã³ããŒïŒïŒïŒ
ã®æž©åºŠãå ç±ããŒã¿ãŒïŒïŒïŒã«ãã50ã400âã®
ç¯å²ã®æž©åºŠã«èšå®ãããŠããããšã確èªããã
åŸãé»æºïŒïŒïŒãææã®é»åã«èšå®ããŠãåå¿å®€
ïŒïŒïŒå ã«ã°ããŒæŸé»ãçèµ·ããåºäœã·ãªã³ããŒ
ïŒïŒïŒäžã«ãå ããç¡ŒçŽ åååã³æ°ŽçŽ ååãå«æ
ããå±€ã圢æããã 次ã«æå®ã®æéçµéåŸãPH3ïŒHeã¬ã¹ãåå¿
宀ïŒïŒïŒå ãžå°å ¥ããã¬ã¹å°å ¥ç®¡ã®ãã«ãïŒïŒïŒ
ãéããŠé®æããããšã«ãã€ãŠãååãå«æãã
å±€é åã®å±€åã®ææã®åãã«ä»»æã«å¶åŸ¡ã§ããã
次ã«åŒãç¶ãã°ããŒæŸé»ãæå®æéç¶ããããšã«
ãããåè¿°ã®ç¡ŒçŽ ååãå«æãã第äžã®å±€ã®äžã«
第äºã®å±€ã圢æããã 第äºã®å±€äžã«ããã²ã³ååãå«æãããå Žåã«
ã¯äžèšã®ã¬ã¹ã«äŸãã°SiF4ïŒHeããæŽã«ä»å ã
ãŠåå¿å®€å ã«éã蟌ãã äžèšã®ãããªæäœã«ãã€ãŠãåºäœã·ãªã³ããŒïŒ
ïŒïŒäžã«åœ¢æããã第äºã®å±€äžã«ïœâSiCããæ§
æãããå±€ã圢æããã«ã¯ã第äžãäºã®å±€ã®åœ¢æ
ã®éãšåæ§ãªãã«ãæäœã«ãã€ãŠãäŸãã°ã
SiH4ã¬ã¹ãCH4ã¬ã¹åã³H2ã¬ã¹ãå¿ èŠã«å¿ããŠ
Heçã®çšéã¬ã¹ã§çšéããŠãææã®æµéæ¯ã§å
å¿å®€ïŒïŒïŒäžã«æµããææã®æ¡ä»¶ã«åŸã€ãŠãã°ã
ãŒæŸé»ãçèµ·ãããæ¯èŒçé«é床ã§ïœâSiCå±€ã
圢æãããŠããŸãäžéšé åã®ïœâSiå±€ã圢æãã
ãã次ã«æ¯èŒçé«é床ã§ïœâSiå±€ã圢æãããŠäž
éšé åã®ïœâSiå±€ãå ç©ããã 倫ã ã®å±€ã圢æããéã«å¿ èŠãªã¬ã¹ã®æµåºãã«
ã以å€ã®æµåºãã«ãã¯å šãŠéããããšã¯èšããŸã§
ããªãããŸã倫ã ã®å±€ã圢æããéãåå±€ã®åœ¢æ
ã«äœ¿çšããã¬ã¹ãåå¿å®€ïŒïŒïŒå ãæµåºãã«ãïŒ
ïŒïŒãïŒïŒïŒããåå¿å®€ïŒïŒïŒå ã«è³ãã¬ã¹é 眮
管ã«æ®çããããšãé¿ããããã«ãå¿ èŠã«å¿ããŠ
æµåºãã«ãïŒïŒïŒãïŒïŒïŒãéãè£å©ãã«ãïŒïŒ
ïŒïŒïŒïŒïŒãéããŠã¡ã€ã³ãã«ãïŒïŒïŒãå šéã
ãŠç³»å ãäžæŠé«ç空ã«ææ°ããæäœãè¡ãã ãŸãã局圢æãè¡ã€ãŠããéã¯å±€åœ¢æã®åäžå
ãå³ãããåºäœã·ãªã³ããŒïŒïŒïŒã¯ãã¢ãŒã¿ïŒïŒ
ïŒã«ãã€ãŠææãããé床ã§äžå®ã«å転ãããã å®æœäŸ ïŒ ç¬¬äžã®å±€ãæ§æããççŽ ååãå«æããã¢ã¢ã«
ãã¢ã¹ã·ãªã³ã³å±€ã®åœ¢ææ¡ä»¶ã第ïŒè¡šã«ç€ºãã
ãã®æ¡ä»¶ãšããŠäœæããããããã«ã€ããŠ
ESRã«ããç¶æ å¯åºŠãããã³äœç©æµæçã枬å®
ããããã®çµæã¯ç¬¬ïŒè¡šã«ç€ºããšããã§ãã€ãã 次ã«ã第ïŒå³ã«ç€ºãã補é è£ çœ®ã«ããããã©ã
ç¶ã¢ã«ãããŠã åºæ¿äžã«ã第ïŒè¡šã«èšèŒã®æ¡ä»¶ã§
局圢æãè¡ã€ããäœã第ïŒè¡šã«ããã第ïŒå±€ã第
ïŒå±€ã第ïŒå±€ãããã³ç¬¬ïŒå±€ãšã¯ãåã ãæ¬çºæ
ã®å å°é»çŽ åã®ç¬¬äžã®å±€ã第äºã®å±€ã第äžã®å±€ã®
äžéšé åãããã³ç¬¬äžã®å±€ã®äžéšé åã瀺ããã®
ãšãã以äžã®å®æœäŸïŒãïŒã«ã€ããŠãåæ§ã§ã
ãã ããããŠåŸãããå圢æçŽ åãã垯é»é²å å®éš
è£ çœ®ã«èšçœ®ã5.0KVã§0.2sec.éã³ãã垯é»ãè¡
ããçŽã¡ã«å åãç §å°ãããå åã¯ã¿ã³ã°ã¹ãã³
ã©ã³ãå æºãçšãã1.5luxã»sec.ã®å éãééå
ã®ãã¹ããã€ãŒããéããŠç §å°ãããã ãã®åŸçŽã¡ã«ãè·é»æ§ã®çŸåå€ïŒãããŒãšã
ã€ãªã¢ãå«ãïŒãçŽ åè¡šé¢ãã«ã¹ã±ãŒãããããš
ã«ãã€ãŠãçŽ åè¡šé¢äžã«è¯å¥œãªãããŒç»åãåŸ
ããçŽ åäžã®ãããŒç»åãã5.0KVã®ã³ãã垯
é»ã§è»¢åçŽäžã«è»¢åãããšããã解ååã«åªãã
é調åçŸæ§ã®ããé®®æãªé«æ¿åºŠã®ç»åãåŸãã
ãã ããã«ç¬¬ïŒå³ã«ç€ºãè£ çœ®ã«ãã垯é»èœãæ®çé»
äœã枬å®ãããšãã垯é»èœã¯32VïŒÎŒãæ®çé»äœ
ã¯5Vã§ãã€ããäœãã第ïŒå³ã«ãããŠãïŒïŒïŒ
ã¯ãã©ã ç¶åºäœäžã«èšããããå å°é»çŽ åãïŒïŒ
ïŒã¯ã³ãã垯é»åšãïŒïŒïŒã¯é²å çšå æºãïŒïŒïŒ
ã¯ã¹ãªãããïŒïŒïŒã¯ãã«ãŒããïŒïŒïŒã¯è¡šé¢é»
äœèšã瀺ããã®ã§ããã ãŸãã20äžåèä¹ ãè¡ã€ãŠã垯é»ãé²å ç¹æ§ã®
å€åãåã³ç»åæ¬ é¥ã®çæã¯èªããããªãã€ãã å®æœäŸ ïŒ ç¬¬ïŒå³ã«ç€ºãã補é è£ çœ®ãçšãã第ïŒå±€ã第ïŒ
å±€ã®æ¡ä»¶ã第ïŒè¡šã«ç€ºãäœææ¡ä»¶ã®äžãã第ïŒè¡š
ã«ç€ºããããªçµã¿åããã§éžæããŠäœæãããã
ã®ä»ã®æ¡ä»¶ã¯å®æœäŸïŒãšåæ§ã«ããŠè¡ã€ãã ããããŠåŸãããå å°é»çŽ åã«ã€ããŠå®æœäŸïŒ
ãšåæ§ã®è©äŸ¡ãè¡ã€ãããã®çµæã第ïŒè¡šã«ç€º
ãã å®æœäŸ ïŒ ç¬¬ïŒå±€ã第ïŒå±€ã®èåãåã 第ïŒè¡šã«ç€ºããã
ã«å€åããã以å€ã¯å®æœäŸïŒãšåæ§ã®æ¡ä»¶ã§äœæ
ãããã®è©äŸ¡ã第ïŒè¡šã«ç€ºãã å®æœäŸ ïŒ ç¬¬ïŒå±€ã第ïŒå±€ã第ïŒè¡šã«ç€ºãæ¡ä»¶ã§äœæãã
ãã®ä»ã¯å®æœäŸïŒãšåæ§ã«ããŠãå å°é»çŽ åãäœ
æããããããŠ5.0KVã§0.2sec.éã³ãã垯é»ã
è¡ã€ã以å€ã¯å®æœäŸïŒãšåæ§ã®è©äŸ¡ãè¡ã€ããšã
ã極ããŠé®®æãªç»åãåŸããã20äžåèä¹ ãè¡ã€
ãŠãã垯é»ãé²å ç¹æ§ã®å€ååã³ç»åæ¬ é¥ã®çæ
ã¯çããªãã€ãããŸãã第ïŒå³ã®è£ 眮ã§æž¬å®ãã
ãã®å å°é»çŽ åã®åž¯é»èœãæ®çé»äœã¯ 垯é»èœâŠ33VïŒÎŒ æ®çé»äœâŠ5V ã§ãã€ãã
ãè¡šã
ãè¡šã
ãè¡šã
ãè¡šã
ãà å®çšäžå¯
ãè¡šã
ãè¡šã
ââŠå®çšã«é©ããŠãã â³âŠå®çšäž
åé¡ãªã ââŠå®çšãåŸã
ÃâŠå®çšäžå¯
åé¡ãªã ââŠå®çšãåŸã
ÃâŠå®çšäžå¯
æ¬çºæã®å
å°é»çŽ åã¯ãïœâSiã§æ§æãããå
å°é»çŽ åã®è¡šé¢å±€ãåè¿°ã®ããšãç¹å®ã®äºå±€æ§æ
ãšããããšã«ãããïœâSiã§æ§æãããå å容局
ãæããåŸæ¥ã®å å°é»çŽ åã«ãããè«žåé¡ãå šãŠ
解決ããããšãã§ãããã®ã§ãããå³ã¡ãæ¬çºæ
ã®å å°é»çŽ åã¯ç¹ã«åªããè湿æ§ãé£ç¶ç¹°è¿ã䜿
çšç¹æ§ãé»æ°çèå§æ§ã䜿çšç°å¢ç¹æ§ããã³èä¹
æ§çãæãããã®ã§ãããç¹ã«é»ååççšå圢æ
çŽ åãšããŠé©çšãããå Žåã«ã¯ãæ®çé»äœã®åœ±é¿
ãå šããªãããã®é»æ°çç¹æ§ãå®å®ããŠãããã
ããçšããŠåŸãããç»åã¯ãæ¿åºŠãé«ããããŒã
ããŒã³ãé®®æã«åºãçããããã極ããŠç§ã§ãã
ã®ãšãªãã
å°é»çŽ åã®è¡šé¢å±€ãåè¿°ã®ããšãç¹å®ã®äºå±€æ§æ
ãšããããšã«ãããïœâSiã§æ§æãããå å容局
ãæããåŸæ¥ã®å å°é»çŽ åã«ãããè«žåé¡ãå šãŠ
解決ããããšãã§ãããã®ã§ãããå³ã¡ãæ¬çºæ
ã®å å°é»çŽ åã¯ç¹ã«åªããè湿æ§ãé£ç¶ç¹°è¿ã䜿
çšç¹æ§ãé»æ°çèå§æ§ã䜿çšç°å¢ç¹æ§ããã³èä¹
æ§çãæãããã®ã§ãããç¹ã«é»ååççšå圢æ
çŽ åãšããŠé©çšãããå Žåã«ã¯ãæ®çé»äœã®åœ±é¿
ãå šããªãããã®é»æ°çç¹æ§ãå®å®ããŠãããã
ããçšããŠåŸãããç»åã¯ãæ¿åºŠãé«ããããŒã
ããŒã³ãé®®æã«åºãçããããã極ããŠç§ã§ãã
ã®ãšãªãã
第ïŒå³ã¯æ¬çºæã®å
å°é»çŽ åã®å±€æ§é ãæš¡åŒç
ã«ç€ºããå³ã§ããã第ïŒå³ã¯æ¬çºæã®å å°é»çŽ å
ã補é ããããã®è£ 眮ã®äžäŸã§ãã°ããŒæŸé»æ³ã«
ãã補é è£ çœ®ã®æš¡åŒç説æå³ã§ããã第ïŒå³ã¯ã
垯é»èœããã³æ®çé»äœã枬å®ããããã®è£ 眮ãæš¡
åŒçã«ç€ºããå³ã§ããã å³ã«ãããŠãïŒïŒïŒâŠâŠå å°é»çŽ åãïŒïŒïŒâŠ
âŠæ¯æäœãïŒïŒïŒâŠâŠç¬¬äžã®å±€ãïŒïŒïŒâŠâŠç¬¬äº
ã®å±€ãïŒïŒïŒâŠâŠèªç±è¡šé¢ãïŒïŒïŒãïŒïŒïŒâŠâŠ
å±€é åãïŒïŒïŒâŠâŠåå¿å®€ãïŒïŒïŒãïŒïŒïŒâŠâŠ
ã¬ã¹ãã³ããïŒïŒïŒãïŒïŒïŒâŠâŠãã¹ããã³ã³ã
ããŒã©ãïŒïŒïŒãïŒïŒïŒâŠâŠæµå ¥ãã«ããïŒïŒïŒ
ãïŒïŒïŒâŠâŠæµåºãã«ããïŒïŒïŒãïŒïŒïŒâŠâŠã
ã«ããïŒïŒïŒãïŒïŒïŒâŠâŠå§å調æŽåšãïŒïŒïŒïŒ
ïŒïŒïŒâŠâŠè£å©ãã«ããïŒïŒïŒâŠâŠã¡ã€ã³ãã«
ããïŒïŒïŒâŠâŠãªãŒã¯ãã«ããïŒïŒïŒâŠâŠç空
èšãïŒïŒïŒâŠâŠåºæ¬ã·ãªã³ããŒãïŒïŒïŒâŠâŠå ç±
ããŒã¿ãŒãïŒïŒïŒâŠâŠã¢ãŒã¿ãŒãïŒïŒïŒâŠâŠé«åš
æ³¢é»æºãïŒïŒïŒâŠâŠå å°é»çŽ åãïŒïŒïŒâŠâŠã³ã
ã垯é»åšãïŒïŒïŒâŠâŠé²å çšå æºãïŒïŒïŒâŠâŠã¹
ãªãããïŒïŒïŒâŠâŠãã«ãŒããïŒïŒïŒâŠâŠè¡šé¢é»
äœèšã
ã«ç€ºããå³ã§ããã第ïŒå³ã¯æ¬çºæã®å å°é»çŽ å
ã補é ããããã®è£ 眮ã®äžäŸã§ãã°ããŒæŸé»æ³ã«
ãã補é è£ çœ®ã®æš¡åŒç説æå³ã§ããã第ïŒå³ã¯ã
垯é»èœããã³æ®çé»äœã枬å®ããããã®è£ 眮ãæš¡
åŒçã«ç€ºããå³ã§ããã å³ã«ãããŠãïŒïŒïŒâŠâŠå å°é»çŽ åãïŒïŒïŒâŠ
âŠæ¯æäœãïŒïŒïŒâŠâŠç¬¬äžã®å±€ãïŒïŒïŒâŠâŠç¬¬äº
ã®å±€ãïŒïŒïŒâŠâŠèªç±è¡šé¢ãïŒïŒïŒãïŒïŒïŒâŠâŠ
å±€é åãïŒïŒïŒâŠâŠåå¿å®€ãïŒïŒïŒãïŒïŒïŒâŠâŠ
ã¬ã¹ãã³ããïŒïŒïŒãïŒïŒïŒâŠâŠãã¹ããã³ã³ã
ããŒã©ãïŒïŒïŒãïŒïŒïŒâŠâŠæµå ¥ãã«ããïŒïŒïŒ
ãïŒïŒïŒâŠâŠæµåºãã«ããïŒïŒïŒãïŒïŒïŒâŠâŠã
ã«ããïŒïŒïŒãïŒïŒïŒâŠâŠå§å調æŽåšãïŒïŒïŒïŒ
ïŒïŒïŒâŠâŠè£å©ãã«ããïŒïŒïŒâŠâŠã¡ã€ã³ãã«
ããïŒïŒïŒâŠâŠãªãŒã¯ãã«ããïŒïŒïŒâŠâŠç空
èšãïŒïŒïŒâŠâŠåºæ¬ã·ãªã³ããŒãïŒïŒïŒâŠâŠå ç±
ããŒã¿ãŒãïŒïŒïŒâŠâŠã¢ãŒã¿ãŒãïŒïŒïŒâŠâŠé«åš
æ³¢é»æºãïŒïŒïŒâŠâŠå å°é»çŽ åãïŒïŒïŒâŠâŠã³ã
ã垯é»åšãïŒïŒïŒâŠâŠé²å çšå æºãïŒïŒïŒâŠâŠã¹
ãªãããïŒïŒïŒâŠâŠãã«ãŒããïŒïŒïŒâŠâŠè¡šé¢é»
äœèšã
Claims (1)
- ïŒ æ¯æäœãšã該æ¯æäœäžã«ã·ãªã³ã³ååãæ¯äœ
ãšãäŒå°æ§ãå¶åŸ¡ããç©è³ªãå«æããéæ¶è³ªææ
ããæ§æããã第äžã®å±€ãšãã·ãªã³ã³ååãæ¯äœ
ãšããéæ¶è³ªææããæ§æããå å°é»æ§ãæãã
第äºã®å±€ãšãã·ãªã³ã³ååãæ¯äœãšãççŽ ååã
å«æããéæ¶è³ªææã§æ§æããã第äžã®å±€ãšãç©
å±€ãããŠãªãå å容局ãšãããªãå å°é»çŽ åã«ã
ããŠãåèšç¬¬äžã®å±€ããæ¬ é¥å¯åºŠãïŒÃ1018cm-3
ïŒESRã·ã°ãã«ïŒä»¥äžã§å±€åã0.05ã0.2ÎŒã§ãã
äžéšé åãšãæ¬ é¥å¯åºŠãïŒÃ1018cm-3ïŒESRã·ã°
ãã«ïŒä»¥äžã§äœç©æµæãïŒÃ1012Ωã»cm以äžã§ã
ãäžéšé åãšãããªãäºå±€æ§æãšããããšãç¹åŸŽ
ãšããå å°é»çŽ åã
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60282013A JPS62141784A (ja) | 1985-12-17 | 1985-12-17 | å å°é»çŽ å |
US06/941,429 US4775606A (en) | 1985-12-17 | 1986-12-15 | Light receiving member comprising amorphous silicon layers for electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60282013A JPS62141784A (ja) | 1985-12-17 | 1985-12-17 | å å°é»çŽ å |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62141784A JPS62141784A (ja) | 1987-06-25 |
JPH0518471B2 true JPH0518471B2 (ja) | 1993-03-12 |
Family
ID=17647012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60282013A Granted JPS62141784A (ja) | 1985-12-17 | 1985-12-17 | å å°é»çŽ å |
Country Status (2)
Country | Link |
---|---|
US (1) | US4775606A (ja) |
JP (1) | JPS62141784A (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164281A (en) * | 1987-05-15 | 1992-11-17 | Sharp Kabushiki Kaisha | Photosensitive body for electrophotography containing amorphous silicon layers |
JP2605303B2 (ja) * | 1987-10-20 | 1997-04-30 | å¯å£«ãŒããã¯ã¹æ ªåŒäŒç€Ÿ | é»ååçæå äœ |
JP2722470B2 (ja) * | 1988-01-08 | 1998-03-04 | å¯å£«ãŒããã¯ã¹æ ªåŒäŒç€Ÿ | é»ååçæå äœ |
US5358811A (en) * | 1988-12-27 | 1994-10-25 | Canon Kabushiki Kaisha | Electrophotographic method using an amorphous silicon light receiving member with a latent image support layer and a developed image support layer and insulating toner having a volume average particle size of 4.5 to 9.0 micron |
US5087542A (en) * | 1988-12-27 | 1992-02-11 | Canon Kabushiki Kaisha | Electrophotographic image-forming method wherein an amorphous silicon light receiving member with a latent image support layer and a developed image support layer and fine particle insulating toner are used |
JP2962851B2 (ja) * | 1990-04-26 | 1999-10-12 | ãã€ãã³æ ªåŒäŒç€Ÿ | å å容éšæ |
JP2876545B2 (ja) * | 1990-10-24 | 1999-03-31 | ãã€ãã³æ ªåŒäŒç€Ÿ | å å容éšæ |
US5284730A (en) * | 1990-10-24 | 1994-02-08 | Canon Kabushiki Kaisha | Electrophotographic light-receiving member |
JP3442009B2 (ja) * | 1999-09-24 | 2003-09-02 | æŸäžé»åšç£æ¥æ ªåŒäŒç€Ÿ | é«èå§ïœïœïœãã©ã³ãžã¹ã¿ã®æ§é |
WO2003052748A1 (en) * | 2001-12-17 | 2003-06-26 | Sumitomo Special Metals Co., Ltd. | Slider head having a sic underlayer |
JP5121796B2 (ja) * | 2009-09-07 | 2013-01-16 | 京ã»ã©ããã¥ã¡ã³ããœãªã¥ãŒã·ã§ã³ãºæ ªåŒäŒç€Ÿ | ç»å圢ææ¹æ³ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0616177B2 (ja) * | 1983-07-27 | 1994-03-02 | ãã€ãã³æ ªåŒäŒç€Ÿ | é»ååççšå å°é»éšæ |
US4613556A (en) * | 1984-10-18 | 1986-09-23 | Xerox Corporation | Heterogeneous electrophotographic imaging members of amorphous silicon and silicon oxide |
US4663258A (en) * | 1985-09-30 | 1987-05-05 | Xerox Corporation | Overcoated amorphous silicon imaging members |
-
1985
- 1985-12-17 JP JP60282013A patent/JPS62141784A/ja active Granted
-
1986
- 1986-12-15 US US06/941,429 patent/US4775606A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4775606A (en) | 1988-10-04 |
JPS62141784A (ja) | 1987-06-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0518471B2 (ja) | ||
JPS6410068B2 (ja) | ||
JP2536730B2 (ja) | å å容éšæ | |
JP2536733B2 (ja) | å å容éšæ | |
JP2536732B2 (ja) | å å容éšæ | |
JP2532830B2 (ja) | å å容éšæ | |
JPS61151549A (ja) | å å容éšæ | |
JPH0315739B2 (ja) | ||
JP2532829B2 (ja) | å å容éšæ | |
JP2536734B2 (ja) | å å容éšæ | |
JPS6410067B2 (ja) | ||
JPH0454941B2 (ja) | ||
JPH0410630B2 (ja) | ||
JPH0454944B2 (ja) | ||
JPH0373854B2 (ja) | ||
JPH0473147B2 (ja) | ||
JPH0785173B2 (ja) | å å容éšæ | |
JPH0410623B2 (ja) | ||
JPH0474700B2 (ja) | ||
JPH0778638B2 (ja) | å å容éšæ | |
JPH0373855B2 (ja) | ||
JPH0454940B2 (ja) | ||
JPS6357783B2 (ja) | ||
JPH0474699B2 (ja) | ||
JPH058422B2 (ja) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |