KR100911643B1 - 탄탈 질화물막의 형성 방법 - Google Patents
탄탈 질화물막의 형성 방법 Download PDFInfo
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- KR100911643B1 KR100911643B1 KR1020077012312A KR20077012312A KR100911643B1 KR 100911643 B1 KR100911643 B1 KR 100911643B1 KR 1020077012312 A KR1020077012312 A KR 1020077012312A KR 20077012312 A KR20077012312 A KR 20077012312A KR 100911643 B1 KR100911643 B1 KR 100911643B1
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- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims description 67
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 59
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 57
- 150000001875 compounds Chemical class 0.000 claims abstract description 44
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 37
- 238000004544 sputter deposition Methods 0.000 claims abstract description 34
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 30
- 150000002367 halogens Chemical class 0.000 claims abstract description 30
- 239000002245 particle Substances 0.000 claims abstract description 14
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 6
- 125000005843 halogen group Chemical group 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 54
- 239000011737 fluorine Substances 0.000 claims description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- IYZDEOSFLDNSDK-UHFFFAOYSA-N CN(C)[Ta](N(C)C)N(C)C Chemical compound CN(C)[Ta](N(C)C)N(C)C IYZDEOSFLDNSDK-UHFFFAOYSA-N 0.000 claims description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 4
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052794 bromium Inorganic materials 0.000 claims description 4
- 239000011630 iodine Substances 0.000 claims description 4
- 229910052740 iodine Inorganic materials 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 150000003949 imides Chemical class 0.000 claims description 3
- -1 tert-amyl Chemical group 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims 7
- HWEYZGSCHQNNEH-UHFFFAOYSA-N silicon tantalum Chemical compound [Si].[Ta] HWEYZGSCHQNNEH-UHFFFAOYSA-N 0.000 claims 6
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 239000007983 Tris buffer Substances 0.000 claims 1
- 238000003776 cleavage reaction Methods 0.000 claims 1
- LIWAQLJGPBVORC-UHFFFAOYSA-N ethylmethylamine Chemical compound CCNC LIWAQLJGPBVORC-UHFFFAOYSA-N 0.000 claims 1
- 230000007017 scission Effects 0.000 claims 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 18
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 238000005229 chemical vapour deposition Methods 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 10
- 239000010408 film Substances 0.000 description 202
- 239000007789 gas Substances 0.000 description 131
- 238000005755 formation reaction Methods 0.000 description 31
- 230000008569 process Effects 0.000 description 24
- 239000010409 thin film Substances 0.000 description 20
- 239000010410 layer Substances 0.000 description 18
- 239000010949 copper Substances 0.000 description 14
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 14
- 238000007872 degassing Methods 0.000 description 11
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 238000005658 halogenation reaction Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 5
- 238000007781 pre-processing Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- BRUWTWNPPWXZIL-UHFFFAOYSA-N ethyl(methyl)azanide;tantalum(5+) Chemical compound [Ta+5].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C BRUWTWNPPWXZIL-UHFFFAOYSA-N 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 150000003482 tantalum compounds Chemical class 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
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Abstract
Description
Claims (12)
- 막 형성실 내에, 탄탈 원소 (Ta) 의 주위에 R-N-R', 또는 R-N-R' 및 =N-R (R 및 R' 는, 탄소 원자수 1 ∼ 6 개의 알킬기를 나타내고, 각각이 동일한 기이어도 되고 상이한 기이어도 된다) 이 배위된 배위 화합물로 이루어지는 원료 가스 및 할로겐 가스를 동시에 도입하여, 기판 상에서 상기 배위 화합물의 할로겐화 화합물로 이루어지는 할로겐화 화합물막을 형성하고, 이어서 H2 또는 NH3 에서 선택된 적어도 1 종의 가스를 도입하여 상기 할로겐화 화합물막과 반응시켜, 이 막 중의 Ta 에 결합된 N 을 절단 제거하고, 또한, N 에 결합되어 있는 할로겐 원자나 R 및 R' 기를 절단 제거하여, 탄탈 리치인 탄탈 질화물막을 형성하는 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 제 1 항에 있어서,상기 H2 또는 NH3 에서 선택된 적어도 1 종의 가스가, 막 형성실 내에서, 플라즈마에 의하여 라디칼로 변환되고, 이 라디칼과 할로겐화 화합물을 반응시켜 탄탈 리치인 탄탈 질화물막을 형성하는 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 원료 가스가, 펜타디메틸아미노탄탈, tert-아밀이미드트리스(디메틸아미드)탄탈, 펜타디에틸아미노탄탈, tert-부틸이미드트리스(디메틸아미드)탄탈, tert-부틸이미드트리스(에틸메틸아미드)탄탈, Ta(N(CH3)2)3(N(CH3CH2)2)2 에서 선택된 적어도 1 종의 배위 화합물의 가스인 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 할로겐 가스가, 불소, 염소, 브롬, 요오드에서 선택된 적어도 1 종의 가스인 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 삭제
- 삭제
- 제 1 항 또는 제 2 항에 기재된 형성 방법에 의하여 얻어진 탄탈 질화물막에 대하여, 탄탈을 주요 구성 성분으로 하는 타겟을 사용하는 스퍼터링에 의하여, 탄탈 입자를 입사시키는 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 제 7 항에 있어서,상기 스퍼터링이, DC 파워와 RF 파워를 조정하여, DC 파워가 5kW 이하이고, 또한, RF 파워가 400 내지 800 W 가 되도록 하여 실시되는 것을 특징으로 하는 탄탈 질화물막의 형성 방법.
- 삭제
- 막 형성실 내에, 탄탈 원소 (Ta) 의 주위에 R-N-R', 또는 R-N-R' 및 =N-R (R 및 R' 는, 탄소 원자수 1 ∼ 6 개의 알킬기를 나타내고, 각각이 동일한 기이어도 되고 상이한 기이어도 된다) 이 배위된 배위 화합물로 이루어지는 원료 가스 및 할로겐 가스를 동시에 도입하여, 기판 상에서 상기 배위 화합물의 할로겐화 화합물로 이루어지는 할로겐화 화합물막을 형성하고, 이어서 SiH4 가스를 도입하여 상기 할로겐화 화합물막과 반응시켜, 이 막 중의 Ta 에 결합된 N 을 절단 제거하고, 또한, N 에 결합되어 있는 할로겐 원자나 R 및 R' 기를 절단 제거하여, 탄탈 리치인 탄탈규소 질화물막을 형성하는 것을 특징으로 하는 탄탈규소 질화물막의 형성 방법.
- 제 10 항에 있어서,상기 SiH4 가스가, 막 형성실 내에서, 플라즈마에 의하여 H 라디칼 및 Si 화합물로 변환되고, 이 H 라디칼과 Si 화합물과 할로겐화 화합물막을 반응시켜 탄탈 리치인 탄탈 규소 질화물막을 형성하는 것을 특징으로 하는 탄탈규소 질화물막의 형성 방법.
- 제 10 항에 기재된 형성 방법에 의하여 얻어진 탄탈규소 질화물막에 대하여, 탄탈을 주요 구성 성분으로 하는 타겟을 이용하는 스퍼터링에 의해, 탄탈 입자를 입사시키는 것을 특징으로 하는 탄탈규소 질화물막의 형성 방법.
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