KR100896027B1 - 반도체 장치 및 그 제조 방법 - Google Patents
반도체 장치 및 그 제조 방법 Download PDFInfo
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- KR100896027B1 KR100896027B1 KR1020067016259A KR20067016259A KR100896027B1 KR 100896027 B1 KR100896027 B1 KR 100896027B1 KR 1020067016259 A KR1020067016259 A KR 1020067016259A KR 20067016259 A KR20067016259 A KR 20067016259A KR 100896027 B1 KR100896027 B1 KR 100896027B1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 42
- 229910052726 zirconium Inorganic materials 0.000 claims description 26
- 229910052719 titanium Inorganic materials 0.000 claims description 25
- 229910052745 lead Inorganic materials 0.000 claims description 23
- 229910052712 strontium Inorganic materials 0.000 claims description 21
- 229910052791 calcium Inorganic materials 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 229910052746 lanthanum Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 229910052758 niobium Inorganic materials 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052715 tantalum Inorganic materials 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 229910052741 iridium Inorganic materials 0.000 claims description 6
- 229910052762 osmium Inorganic materials 0.000 claims description 6
- 229910052703 rhodium Inorganic materials 0.000 claims description 6
- 229910052707 ruthenium Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052702 rhenium Inorganic materials 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- 239000010408 film Substances 0.000 description 132
- 239000010936 titanium Substances 0.000 description 18
- 239000011575 calcium Substances 0.000 description 13
- 229910052814 silicon oxide Inorganic materials 0.000 description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 10
- 238000011835 investigation Methods 0.000 description 10
- 238000004544 sputter deposition Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 230000010287 polarization Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000137 annealing Methods 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052770 Uranium Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 4
- 230000028161 membrane depolarization Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- -1 SBTN and YZ) Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 238000000224 chemical solution deposition Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001552 radio frequency sputter deposition Methods 0.000 description 1
- 238000004151 rapid thermal annealing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
- H10B53/30—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors characterised by the memory core region
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B51/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory transistors
- H10B51/30—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory transistors characterised by the memory core region
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- Semiconductor Memories (AREA)
Abstract
Description
시료 | No.1 | No.2 | No.3 | No.4 | No.5 | No.6 | No.7 | No.8 |
La | 3 | 3 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Nb | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 4 |
두께 | 150 | 120 | 150 | 120 | 150 | 120 | 150 | 120 |
시료 | No.11 | No.12 |
La | 3 | 1.5 |
Nb | 0 | 1 |
두께 | 150 | 150 |
Claims (22)
- 반도체 기판과,상기 반도체 기판의 상방(上方)에 형성된 강유전체 커패시터를 갖고,상기 강유전체 커패시터는,화학식이 ABO3로 표시되는 물질에 La 및 Nb이 첨가되어 구성된 강유전체막과,상기 강유전체막 상에 형성되고, Pt, Ir, Ru, Rh, Re, Os 및 Pd으로 이루어지는 그룹에서 선택된 적어도 일종의 원소의 산화물로 이루어진 제 1 상부 전극막과,상기 제 1 상부 전극막 상에 형성되고, Pt, Ir, Ru, Rh, Re, Os 및 Pd으로 이루어지는 그룹에서 선택된 적어도 일종의 원소의 산화물로 이루어진 제 2 상부 전극막을 구비하며,상기 제 1 상부 전극막 중의 산소 농도가 상기 제 2 상부 전극막 중의 산소 농도보다 낮은 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 강유전체막 중의 La의 함유량은 0.1mol% 내지 5mol%인 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 강유전체막 중의 Nb의 함유량은 0.1mol% 내지 5mol%인 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 강유전체막 중의 La의 함유량은 0.1mol% 내지 5mol%이고, Nb의 함유량 은 0.1mol% 내지 5mol%인 것을 특징으로 하는 반도체 장치.
- 삭제
- 제 1 항에 있어서,상기 강유전체막을 구성하는 물질은, 억셉터 원소로서, Pb, Sr, Ca, Bi, Ba, Li 및 Y으로 이루어지는 그룹에서 선택된 적어도 일종(一種)의 원소를 함유하는 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 강유전체막을 구성하는 물질은, 도너 원소로서, Ti, Zr, Hf, V, Ta, W, Mn, Al, Bi 및 Sr으로 이루어지는 그룹에서 선택된 적어도 일종의 원소를 함유하는 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 강유전체막을 구성하는 물질의 화학식은Pb(Zr, Ti)O3, (Pb, Ca)(Zr, Ti)O3, (Pb, Ca)(Zr, Ti, Ta)O3, (Pb, Ca)(Zr, Ti, W)O3, (Pb, Sr)(Zr, Ti)O3, (Pb, Sr)(Zr, Ti, W)O3, (Pb, Sr)(Zr, Ti, Ta)O3, (Pb, Ca, Sr)(Zr, Ti)O3, (Pb, Ca, Sr)(Zr, Ti ,W)O3, (Pb, Ca, Sr)(Zr, Ti, Ta)O3, SrBi2Ta2O9, Bi4Ti3O9, 및 BaBi2Ta2O9으로 이루어지는 그룹에서 선택된 일종으로 표시되는 것을 특징으로 하는 반도체 장치.
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 제 1 항에 있어서,상기 강유전체 커패시터를 복수개 구비한 메모리 셀 어레이를 갖는 것을 특징으로 하는 반도체 장치.
- 삭제
- 삭제
- 반도체 기판의 상방에 강유전체 커패시터를 형성하는 공정을 갖고,상기 강유전체 커패시터를 형성하는 공정은,강유전체막을 형성하는 공정과,상기 강유전체막 상에, Pt, Ir, Ru, Rh, Re, Os 및 Pd으로 이루어지는 그룹에서 선택된 적어도 일종의 원소의 산화물로 이루어진 제 1 상부 전극막을 형성하는 공정과,상기 제 1 상부 전극막 상에, Pt, Ir, Ru, Rh, Re, Os 및 Pd으로 이루어지는 그룹에서 선택된 적어도 일종의 원소의 산화물로 이루어진 제 2 상부 전극막을 형성하는 공정을 구비하며,상기 강유전체막은 화학식이 ABO3로 표시되는 물질에 La 및 Nb이 첨가되어 구성되며,상기 제 1 상부 전극막 중의 산소 농도가 상기 제 2 상부 전극막 중의 산소 농도보다 낮은 것을 특징으로 하는 반도체 장치의 제조 방법.
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0758222A (ja) * | 1993-06-07 | 1995-03-03 | Ricoh Co Ltd | 強誘電体材料および該材料をゲートとして用いたmfsfet |
US5625529A (en) * | 1995-03-28 | 1997-04-29 | Samsung Electronics Co., Ltd. | PZT thin films for ferroelectric capacitor and method for preparing the same |
JP2002151656A (ja) * | 2000-11-14 | 2002-05-24 | Toshiba Corp | 半導体装置及びその製造方法 |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0758222A (ja) * | 1993-06-07 | 1995-03-03 | Ricoh Co Ltd | 強誘電体材料および該材料をゲートとして用いたmfsfet |
US5625529A (en) * | 1995-03-28 | 1997-04-29 | Samsung Electronics Co., Ltd. | PZT thin films for ferroelectric capacitor and method for preparing the same |
JP2002151656A (ja) * | 2000-11-14 | 2002-05-24 | Toshiba Corp | 半導体装置及びその製造方法 |
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