JP2022185111A - 熱原子層エッチングプロセス - Google Patents
熱原子層エッチングプロセス Download PDFInfo
- Publication number
- JP2022185111A JP2022185111A JP2022163420A JP2022163420A JP2022185111A JP 2022185111 A JP2022185111 A JP 2022185111A JP 2022163420 A JP2022163420 A JP 2022163420A JP 2022163420 A JP2022163420 A JP 2022163420A JP 2022185111 A JP2022185111 A JP 2022185111A
- Authority
- JP
- Japan
- Prior art keywords
- reactant
- halide
- substrate
- gas phase
- vapor phase
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 102
- 238000005530 etching Methods 0.000 title claims abstract description 58
- 230000008569 process Effects 0.000 title abstract description 53
- 239000000376 reactant Substances 0.000 claims abstract description 537
- 150000004820 halides Chemical class 0.000 claims abstract description 183
- 239000000758 substrate Substances 0.000 claims abstract description 140
- 238000006243 chemical reaction Methods 0.000 claims abstract description 89
- -1 halide compound Chemical class 0.000 claims abstract description 75
- 239000012808 vapor phase Substances 0.000 claims abstract description 61
- 239000007789 gas Substances 0.000 claims description 118
- 239000012071 phase Substances 0.000 claims description 109
- 239000000463 material Substances 0.000 claims description 48
- 239000010408 film Substances 0.000 claims description 47
- 150000001875 compounds Chemical class 0.000 claims description 40
- 229910052760 oxygen Inorganic materials 0.000 claims description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 36
- 239000001301 oxygen Substances 0.000 claims description 36
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 36
- 239000003446 ligand Substances 0.000 claims description 33
- 229910052718 tin Inorganic materials 0.000 claims description 32
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 30
- 229910052799 carbon Inorganic materials 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 26
- 239000001257 hydrogen Substances 0.000 claims description 26
- 150000005309 metal halides Chemical class 0.000 claims description 25
- 229910001507 metal halide Inorganic materials 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 17
- 229910004166 TaN Inorganic materials 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- 229910052593 corundum Inorganic materials 0.000 claims description 13
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 13
- 229910004541 SiN Inorganic materials 0.000 claims description 12
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 229910052723 transition metal Inorganic materials 0.000 claims description 11
- 150000003624 transition metals Chemical class 0.000 claims description 11
- 229910052787 antimony Inorganic materials 0.000 claims description 10
- 239000007795 chemical reaction product Substances 0.000 claims description 10
- 229910052736 halogen Inorganic materials 0.000 claims description 9
- 150000002367 halogens Chemical class 0.000 claims description 9
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 8
- 238000010574 gas phase reaction Methods 0.000 claims description 8
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 8
- 150000002430 hydrocarbons Chemical group 0.000 claims description 8
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- HJUGFYREWKUQJT-UHFFFAOYSA-N tetrabromomethane Chemical compound BrC(Br)(Br)Br HJUGFYREWKUQJT-UHFFFAOYSA-N 0.000 claims description 6
- 229930195733 hydrocarbon Chemical group 0.000 claims description 5
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten(VI) oxide Inorganic materials O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims description 5
- 239000004215 Carbon black (E152) Chemical group 0.000 claims description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 4
- 150000001350 alkyl halides Chemical class 0.000 claims description 4
- JNZSJDBNBJWXMZ-UHFFFAOYSA-N carbon diselenide Chemical compound [Se]=C=[Se] JNZSJDBNBJWXMZ-UHFFFAOYSA-N 0.000 claims description 4
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical group OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000013110 organic ligand Substances 0.000 claims description 4
- 229910052702 rhenium Inorganic materials 0.000 claims description 4
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- KNAVTGAJQKHZAS-UHFFFAOYSA-N 2-chloroethoxy(pentafluoro)-$l^{6}-sulfane Chemical compound FS(F)(F)(F)(F)OCCCl KNAVTGAJQKHZAS-UHFFFAOYSA-N 0.000 claims description 3
- 150000001266 acyl halides Chemical class 0.000 claims description 3
- WRJWRGBVPUUDLA-UHFFFAOYSA-N chlorosulfonyl isocyanate Chemical compound ClS(=O)(=O)N=C=O WRJWRGBVPUUDLA-UHFFFAOYSA-N 0.000 claims description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 3
- JFCHSQDLLFJHOA-UHFFFAOYSA-N n,n-dimethylsulfamoyl chloride Chemical compound CN(C)S(Cl)(=O)=O JFCHSQDLLFJHOA-UHFFFAOYSA-N 0.000 claims description 3
- 150000003461 sulfonyl halides Chemical class 0.000 claims description 3
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 claims description 3
- GVZFDPPAJXHNGL-UHFFFAOYSA-N trifluoromethyl trifluoromethanesulfonate Chemical compound FC(F)(F)OS(=O)(=O)C(F)(F)F GVZFDPPAJXHNGL-UHFFFAOYSA-N 0.000 claims description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 1
- GIVWEAQNLGMXIS-UHFFFAOYSA-N S(F)(F)(F)(F)(F)Cl.S(F)(F)(F)F Chemical compound S(F)(F)(F)(F)(F)Cl.S(F)(F)(F)F GIVWEAQNLGMXIS-UHFFFAOYSA-N 0.000 claims 1
- 229910018503 SF6 Inorganic materials 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims 1
- 229960000909 sulfur hexafluoride Drugs 0.000 claims 1
- 239000006227 byproduct Substances 0.000 description 33
- 241000894007 species Species 0.000 description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 22
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 21
- 125000004429 atom Chemical group 0.000 description 19
- 238000010926 purge Methods 0.000 description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 16
- 239000011737 fluorine Substances 0.000 description 16
- 229910052731 fluorine Inorganic materials 0.000 description 16
- 239000010410 layer Substances 0.000 description 16
- 229910052717 sulfur Inorganic materials 0.000 description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 14
- 239000000460 chlorine Substances 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 239000011593 sulfur Substances 0.000 description 14
- 229910017107 AlOx Inorganic materials 0.000 description 13
- 125000000217 alkyl group Chemical group 0.000 description 13
- 125000005843 halogen group Chemical group 0.000 description 13
- 229910052814 silicon oxide Inorganic materials 0.000 description 13
- 239000013077 target material Substances 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 12
- 229910019787 NbF5 Inorganic materials 0.000 description 12
- 125000003118 aryl group Chemical group 0.000 description 12
- AOLPZAHRYHXPLR-UHFFFAOYSA-I pentafluoroniobium Chemical compound F[Nb](F)(F)(F)F AOLPZAHRYHXPLR-UHFFFAOYSA-I 0.000 description 12
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 10
- 229910052698 phosphorus Inorganic materials 0.000 description 10
- 239000011574 phosphorus Substances 0.000 description 10
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 9
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 9
- 229910003134 ZrOx Inorganic materials 0.000 description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 229910017083 AlN Inorganic materials 0.000 description 7
- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 7
- 125000001931 aliphatic group Chemical group 0.000 description 7
- 230000003247 decreasing effect Effects 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 6
- 239000012159 carrier gas Substances 0.000 description 6
- 125000000623 heterocyclic group Chemical group 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000002356 single layer Substances 0.000 description 6
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 239000002879 Lewis base Substances 0.000 description 5
- 229910019800 NbF 5 Inorganic materials 0.000 description 5
- 229910052681 coesite Inorganic materials 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 238000000151 deposition Methods 0.000 description 5
- 150000007527 lewis bases Chemical class 0.000 description 5
- 229910001510 metal chloride Inorganic materials 0.000 description 5
- 239000010955 niobium Substances 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 5
- 229910052755 nonmetal Inorganic materials 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 229910052682 stishovite Inorganic materials 0.000 description 5
- 229910052905 tridymite Inorganic materials 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000012320 chlorinating reagent Substances 0.000 description 4
- 239000012025 fluorinating agent Substances 0.000 description 4
- 229910052752 metalloid Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000002841 Lewis acid Substances 0.000 description 3
- 229910019804 NbCl5 Inorganic materials 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 150000003973 alkyl amines Chemical class 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 3
- 150000004985 diamines Chemical class 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 150000007517 lewis acids Chemical class 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- UPQQXPKAYZYUKO-UHFFFAOYSA-N 2,2,2-trichloroacetamide Chemical compound OC(=N)C(Cl)(Cl)Cl UPQQXPKAYZYUKO-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
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- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- LGDSHSYDSCRFAB-UHFFFAOYSA-N Methyl isothiocyanate Chemical compound CN=C=S LGDSHSYDSCRFAB-UHFFFAOYSA-N 0.000 description 2
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 2
- JRNVZBWKYDBUCA-UHFFFAOYSA-N N-chlorosuccinimide Chemical compound ClN1C(=O)CCC1=O JRNVZBWKYDBUCA-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 229910003087 TiOx Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- FWVIYFTZAHMHIO-UHFFFAOYSA-N azanylidyne(chloro)-$l^{4}-sulfane Chemical compound ClS#N FWVIYFTZAHMHIO-UHFFFAOYSA-N 0.000 description 2
- 150000001649 bromium compounds Chemical class 0.000 description 2
- FUSUHKVFWTUUBE-UHFFFAOYSA-N buten-2-one Chemical compound CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- LFHISGNCFUNFFM-UHFFFAOYSA-N chloropicrin Chemical compound [O-][N+](=O)C(Cl)(Cl)Cl LFHISGNCFUNFFM-UHFFFAOYSA-N 0.000 description 2
- 150000001923 cyclic compounds Chemical class 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- LJSQFQKUNVCTIA-UHFFFAOYSA-N diethyl sulfide Chemical compound CCSCC LJSQFQKUNVCTIA-UHFFFAOYSA-N 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- AXCBHWGTRNNXKG-UHFFFAOYSA-N fluorochlorane oxide Chemical compound FCl=O AXCBHWGTRNNXKG-UHFFFAOYSA-N 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- MBAKFIZHTUAVJN-UHFFFAOYSA-I hexafluoroantimony(1-);hydron Chemical group F.F[Sb](F)(F)(F)F MBAKFIZHTUAVJN-UHFFFAOYSA-I 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 2
- 150000004694 iodide salts Chemical class 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000012948 isocyanate Chemical class 0.000 description 2
- 229940016409 methylsulfonylmethane Drugs 0.000 description 2
- SAVQQRYWWAGSQW-UHFFFAOYSA-N n-methyl-n-(trifluoro-$l^{4}-sulfanyl)methanamine Chemical compound CN(C)S(F)(F)F SAVQQRYWWAGSQW-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 2
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920005862 polyol Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- MNOALXGAYUJNKX-UHFFFAOYSA-N s-chloro chloromethanethioate Chemical compound ClSC(Cl)=O MNOALXGAYUJNKX-UHFFFAOYSA-N 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 150000003457 sulfones Chemical class 0.000 description 2
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 2
- XIUROWKZWPIAIB-UHFFFAOYSA-N sulfotep Chemical compound CCOP(=S)(OCC)OP(=S)(OCC)OCC XIUROWKZWPIAIB-UHFFFAOYSA-N 0.000 description 2
- 125000004434 sulfur atom Chemical group 0.000 description 2
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- GRGCWBWNLSTIEN-UHFFFAOYSA-N trifluoromethanesulfonyl chloride Chemical compound FC(F)(F)S(Cl)(=O)=O GRGCWBWNLSTIEN-UHFFFAOYSA-N 0.000 description 1
- CVAWRGUUUNUCCU-UHFFFAOYSA-N trimethyl-(2-trimethylsilylcyclohexa-1,3-dien-1-yl)silane Chemical compound C[Si](C)(C)C1=C([Si](C)(C)C)C=CCC1 CVAWRGUUUNUCCU-UHFFFAOYSA-N 0.000 description 1
- FTVLMFQEYACZNP-UHFFFAOYSA-N trimethylsilyl trifluoromethanesulfonate Chemical group C[Si](C)(C)OS(=O)(=O)C(F)(F)F FTVLMFQEYACZNP-UHFFFAOYSA-N 0.000 description 1
- MZGUIAFRJWSYJJ-UHFFFAOYSA-M trimethylstannanylium;bromide Chemical compound C[Sn](C)(C)Br MZGUIAFRJWSYJJ-UHFFFAOYSA-M 0.000 description 1
- CCRMAATUKBYMPA-UHFFFAOYSA-N trimethyltin Chemical compound C[Sn](C)C.C[Sn](C)C CCRMAATUKBYMPA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Chemical group 0.000 description 1
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 1
- NGKVXLAPSYULSX-UHFFFAOYSA-N tungsten(vi) oxytetrafluoride Chemical compound F.F.F.F.[W]=O NGKVXLAPSYULSX-UHFFFAOYSA-N 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical group [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Abstract
Description
本出願は、2016年12月9日出願の米国仮特許出願第62/432,318号、2017年1月24日出願の米国仮特許出願第62/449,945号、2017年2月7日出願の米国仮特許出願第62/455,989号、および2017年4月13日出願の米国仮特許出願第62/485,330号の優先権を主張するものである。
本出願は、エッチングプロセス、より具体的には、逐次反応を用いた熱原子層エッチングプロセスに関する。
いくつかの実施形態では、第一の気相ハロゲン化物反応物質は、金属ハロゲン化物を含む。いくつかの実施形態では、金属は、Nb、Ta、Mo、Sn、V、Re、W、または第5族または6族の遷移金属を含む。いくつかの実施形態では、第一の気相ハロゲン化物反応物質は、SbまたはTeを含む。いくつかの実施形態では、ハロゲン化物は、塩化物、フッ化物、臭化物、またはヨウ化物を含む。いくつかの実施形態では、第一の気相ハロゲン化物反応物質は、NbF5を含む。
Claims (29)
- 化学原子層エッチングによって反応チャンバー内の基材の表面上の膜をエッチングする方法であって、前記方法が、一つ以上のエッチングサイクルを含み、各サイクルが、
第一のハロゲン化物配位子を含む第一の気相ハロゲン化物反応物質に前記基材を曝露して前記基材表面上に吸着種を形成することであって、前記第一の気相ハロゲン化物反応物質が水素を含まない、形成すること、および、
続いて、前記基材を、少なくとも一部の材料が前記膜から除去されるように、前記吸着種を揮発性種に変換する第二のハロゲン化物配位子を含む第二の気相ハロゲン化物反応物質に前記基材を曝露することであって、前記第二の気相ハロゲン化物反応物質が、水素を含まない、曝露すること、を含み、および、
前記エッチングサイクル中に前記基材がプラズマ反応物質と接触していない、方法。 - 前記膜がW、TiN、TiO2、TaN、SiN、AlO2、Al2O3、ZrO2、WO3、SiOCN、SiOC、SiCN、AlN、またはHfO2を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質が金属ハロゲン化物を含む、請求項1に記載の方法。
- 前記金属ハロゲン化物は、Nb、Ta、Mo、Sn、V、Re、Te、W、ならびに群5および6の遷移金属から選択される金属を含む、請求項3に記載の方法。
- 前記第一の気相ハロゲン化物反応物質が金属を含まない、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質は有機ハロゲン化物化合物を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質が、ハロゲン化アルキル、ハロゲン化アシル、スルホニルハロゲン化物、スルフェニルハロゲン化物、ハロゲン化セレニル、または有機配位子を含むハロゲン化ホウ素を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質は、フルオロスルホン酸、トリフルオロメタンスルホン酸、トリフルオロメチルトリフルオロメタンスルホナート、サルファテトラフルオリドサルファクロリドペンタフルオリド、または、六フッ化硫黄、または、1-クロロ2-(ペンタフルオロスルフラニルオキシ)エタンを含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質が、クロロスルホニルイソシアネートまたはN,N-ジメチルスルファモイルクロリドを含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質がホウ素、水素、およびハロゲン化物を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質がリン、酸素、およびハロゲン化物を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質がアンチモンおよびハロゲン化物を含む、請求項1に記載の方法。
- 前記第一の気相ハロゲン化物反応物質が、一つ以上の-CF3基を含む、請求項1に記載の方法。
- 前記エッチングサイクルを順次に二回以上繰り返すことをさらに含む、請求項1に記載の方法。
- 前記第一および第二のハロゲン化物配位子がClである、請求項1に記載の方法。
- 前記第二の気相ハロゲン化物反応物質は金属を含まない、請求項1に記載の方法。
- 前記第二の気相ハロゲン化物反応物質が炭素系ハロゲン化物である、請求項1に記載の方法。
- 前記第二の気相ハロゲン化物反応物質はCCl4またはCBr4を含む、請求項17に記載の方法。
- 前記エッチングサイクル中の前記基材の温度が300℃~500℃である、請求項1に記載の方法。
- 化学原子層エッチングによって反応チャンバー内の基材の表面上の膜をエッチングする方法であって、前記方法が、一つ以上のエッチングサイクルを含み、各サイクルが、
第一の気相反応物質が前記基材表面上の分子と反応して基材の表面上に反応物質種を形成するように、前記基材を前記第一の気相反応物質に曝すこと、および
続いて、前記反応物質種が揮発性反応生成物に変換され、前記膜の一部が前記基材表面から除去されるように、前記基材を第二の気相反応物質に曝露することであって、前記基材が前記エッチングサイクル中にプラズマ反応物質と接触しない、曝露すること、を含む、方法。 - 前記第一の気相反応物質はCSe2を含む、請求項20に記載の方法。
- 前記第一の気相反応物質が、S=R=S構造を有する化合物を含み、ここで、Rが炭素であってもよく、またはC2-C8などの任意の炭化水素であり得る、請求項20に記載の方法。
- 前記第一の気相反応物質はCS2を含む、請求項22に記載の方法。
- 前記第二の気相反応物質がトリエチルアルミニウム(TEA)またはトリメチルアルミニウム(TMA)を含む、請求項20に記載の方法。
- 二つ以上のエッチングサイクルを含む、反応チャンバー内の基材上の膜をエッチングする方法であって、各サイクルが、
水素を含まない第一の気相ハロゲン化物反応物質へ前記基材を曝露すること、および
続いて、前記基材を、水素を含まない第二の異なる気相ハロゲン化物反応物質に曝露すること、および
前記基材を、第一および第二の気相反応物質とは異なる第三の気相反応物質に曝露すること、を含み、
前記エッチングサイクル中に前記基材がプラズマ反応物質と接触していない、方法。 - 追加の気相反応物質が、一つ以上のSO3、H2S、NH3、H2O、HCOOH、H2O2、およびヒドラジンを含む、請求項25に記載の方法。
- 基材表面上に薄膜をエッチングする方法であって、前記方法が、
第一のハロゲン化物配位子を含む第一の気相ハロゲン化物反応物質に前記基材表面を曝露して、第一の反応物質種を前記基材表面上に形成することであって、前記第一の気相ハロゲン化物反応物質が水素を含まない、形成すること、および、
続いて、第二の気相ハロゲン化物反応物質が前記第一の反応物質種を気相反応生成物に変換するように、第二のハロゲン化物配位子を含む前記第二の気相ハロゲン化物反応物質に前記基材を曝露することであって、前記第二の気相ハロゲン化物反応物質が水素を含まない、曝露すること、を含み、
前記第一の反応物質種の前記形成または前記第二の気相ハロゲン化物反応物質の気相反応生成物への前記変換は、自己制御ではない、方法。 - 前記エッチングサイクル中に前記基材がプラズマ反応物質と接触していない、請求項27に記載の方法。
- 前記第一の反応物質種の前記形成および前記第二の気相ハロゲン化物反応物質の気相反応生成物への前記変換が、自己制御ではない、請求項27に記載の方法。
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016100873A1 (en) * | 2014-12-18 | 2016-06-23 | The Regents Of The University Of Colorado, A Body Corporate | Novel methods of atomic layer etching (ale) using sequential, self-limiting thermal reactions |
WO2017205614A1 (en) * | 2016-05-26 | 2017-11-30 | Tokyo Electron Limited | Atomic layer etching systems and methods |
US20180080124A1 (en) * | 2016-09-19 | 2018-03-22 | Applied Materials, Inc. | Methods and systems for thermal ale and ald |
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