KR20050111528A - 규소 웨이퍼의 제조방법 - Google Patents
규소 웨이퍼의 제조방법 Download PDFInfo
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- KR20050111528A KR20050111528A KR1020047020072A KR20047020072A KR20050111528A KR 20050111528 A KR20050111528 A KR 20050111528A KR 1020047020072 A KR1020047020072 A KR 1020047020072A KR 20047020072 A KR20047020072 A KR 20047020072A KR 20050111528 A KR20050111528 A KR 20050111528A
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 195
- 239000010703 silicon Substances 0.000 title claims abstract description 195
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000004519 manufacturing process Methods 0.000 title claims description 80
- 238000000034 method Methods 0.000 title claims description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 82
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000001301 oxygen Substances 0.000 claims abstract description 73
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 73
- 239000012298 atmosphere Substances 0.000 claims abstract description 50
- 230000001590 oxidative effect Effects 0.000 claims abstract description 45
- 239000013078 crystal Substances 0.000 claims description 63
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 57
- 229910052757 nitrogen Inorganic materials 0.000 claims description 29
- 238000005498 polishing Methods 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 229910052698 phosphorus Inorganic materials 0.000 claims description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 14
- 239000011574 phosphorus Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 claims description 8
- 238000005468 ion implantation Methods 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
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- 230000003014 reinforcing effect Effects 0.000 claims 1
- 235000012431 wafers Nutrition 0.000 description 262
- 125000004429 atom Chemical group 0.000 description 41
- 230000007547 defect Effects 0.000 description 40
- 239000010408 film Substances 0.000 description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 229960002050 hydrofluoric acid Drugs 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012300 argon atmosphere Substances 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
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- 238000001816 cooling Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003376 silicon Chemical class 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004854 X-ray topography Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
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- 238000000137 annealing Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
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- 150000004767 nitrides Chemical class 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Abstract
Description
[Oi](atoms/cm3) | 온도T(℃) | 1/(k(T+273))(1/eV) |
3.020E + 17 | 1087 | 8.533 |
3.766E + 17 | 1113 | 8.373 |
5.191E + 17 | 1175 | 8.014 |
5.816E + 17 | 1188 | 7.943 |
6.005E + 17 | 1200 | 7.878 |
잉곳의 상단 | 잉곳의 하단 | |||||
결정중심 | 중심으로부터 50mm | 중심으로부터 90mm | 결정중심 | 중심으로부터 50mm | 중심으로부터 90mm | |
중성자 조사 전 | p-7869 | p-7791 | p-7771 | p-7347 | p-6840 | p-7423 |
중성자 조사 후 | n-4.73 | n-4.89 | n-4.85 | n-4.94 | n-5.00 | n-4.95 |
Claims (19)
- 규소 단결정으로부터 슬라이스된 규소 웨이퍼를 산화성 분위기에서 열처리하는 규소 웨이퍼의 제조방법에 있어서,산화성 분위기에서 열처리하는 온도를 T(℃)로 하고, 규소 웨이퍼의 격자간 산소 농도를, [Oi](atoms/cm3)으로 하여, 온도 T와 격자간 산소 농도[Oi]의 조합이 하기 식을 만족시키는 것을 특징으로 하는 규소 웨이퍼의 제조방법.[Oi] ≤2.123 × 1021exp(-1.035/k(T+273))(여기서, 격자간 산소 농도[Oi]은, FT-IR법으로 측정한 값(ASTM F-121, 1979년), k는 볼츠만 정수 8.617 × 10-5(eV/K)이다.)
- 제 1항에 있어서, 상기 규소 단결정으로서, 중성자 조사에 의해 인이 도핑된 단결정을 사용하는 것을 특징으로 하는 규소 웨이퍼의 제조방법.
- 제 1항 또는 제 2항에 있어서, 상기 규소 단결정으로서, 질소가 2×1013 atoms/cm3이상 도핑된 단결정을 사용하는 것을 특징으로 하는 규소 웨이퍼의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 규소 단결정으로서, 탄소가 5×1016 atoms/cm3이상 도핑된 단결정을 사용하는 것을 특징으로 하는 규소 웨이퍼의 제조방법.
- 제 1항 내지 제 4항 중 어느 한 항에 있어서, 상기 산화성 분위기에서의 열처리 후에 규소 웨이퍼를 경면 연마하는 것을 특징으로 하는 규소 웨이퍼의 제조방법.
- 제 5항에 기재된 방법에 의해 제조된 규소 웨이퍼를 활성층측 웨이퍼로서 사용함으로써, SOI웨이퍼를 제조하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 활성층측 규소 웨이퍼에 산화성 분위기에서 열처리를 실시함으로써, 매몰 산화막을 형성하고, 이 후, 그 매몰 산화막을 개재하여 지지측 웨이퍼에 접착시켜서 접착 SOI웨이퍼를 제조하는 SOI웨이퍼의 제조방법에 있어서,상기 산화 열처리가, 활성층측 규소 웨이퍼를 산화성 분위기에서 산화 열처리하는 온도를 T(℃)로 하고, 활성층측 규소 웨이퍼의 격자간 산소 농도를 [Oi](atoms/cm3)로 하였을 때, 상기 열처리 온도T와 활성층측 규소 웨이퍼의 격자간 산소 농도[Oi]의 조합이 하기 식을 만족시키는 것을 특징으로 하는 SOI웨이퍼의 제조방법.[Oi]≤2.123×1021exp(-1.035/k(T+273))(여기서, 격자간 산소 농도[Oi]는, FT-IR법으로 측정한 값(ASTM F-121, 1979년), k는 볼츠만 정수 8.617×10-5(eV/K)이다.)
- 제 7항에 있어서, 상기 활성층측 규소 웨이퍼가, 중성자 조사에 의해 인이 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 7항 또는 제 8항에 있어서, 상기 활성층측 규소 웨이퍼가, 질소가 2×1013 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 7항 내지 제 9항 중 어느 한 항에 있어서, 상기 활성층측 규소 웨이퍼가, 탄소가 5×1016 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 활성층측 규소 웨이퍼를 매몰 산화막을 개재하여 지지측 웨이퍼에 접착시킨 후에 산화성 분위기에서 접착 강화 열처리를 실시해서 접착 SOI웨이퍼를 제조하는 SOI웨이퍼의 제조방법에 있어서,상기 접착 강화 열처리가, 산화성 분위기에서 접착 강화 열처리하는 온도를 T(℃)로 하고, 활성층측 규소 웨이퍼의 격자간 산소 농도를 [Oi](atoms/cm3)로 하여, 온도T와 격자간 산소 농도[Oi]의 조합이 하기 식을 만족시키는 것을 특징으로 하는 SOI웨이퍼의 제조방법.[Oi] ≤ 2.123 ×1021exp(-1.035/k(T+273))(여기서, 격자간 산소 농도[Oi]는, FT-lR법으로 측정한 값(ASTM F-121, 1979년), k는 볼츠만 정수 8.617×10-5(eV/K)이다.)
- 제 11항에 있어서, 상기 활성층측 규소 웨이퍼가, 중성자 조사에 의해 인이 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 11항 또는 제 12항에 있어서, 상기 활성층측 규소 웨이퍼가, 질소가 2×1013 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 11항 내지 제 13항 중 어느 한 항에 있어서, 상기 활성층측 규소 웨이퍼가, 탄소가 5×1016 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 산화성 분위기에서 열처리하는 온도를 T(℃)로 하고, 규소 웨이퍼의 격자간 산소 농도를 [Oi](atoms/cm3)로 하였을 때, 열처리 온도T와 웨이퍼의 격자간 산소 농도[Oi]의 조합이 하기 식을 만족시키는 산화 열처리를 실시한 후, 산화막을 제거하여 경면 연마를 행하여 활성층측 규소 웨이퍼를 제작하고,이 활성층측 규소 웨이퍼에 산화막을 형성하고, 이 산화막을 개재하여 이온 주입함으로써, 이 활성층측 규소 웨이퍼에 이온 주입층을 형성하고,이어서, 이 활성층측 규소 웨이퍼를 상기 산화막을 개재하여 지지측 웨이퍼에 접착시켜 접착 웨이퍼를 형성하고,이 후, 이 접착 웨이퍼를 소정 온도로 유지하여 열처리함으로써, 상기 이온 주입층을 경계로서 활성층측 규소 웨이퍼의 일부를 박리시켜 SOI웨이퍼를 제조하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.[Oi] ≤ 2.123×1021exp(-1.035/k(T+273))(여기서, 격자간 산소 농도[Oi]는, FT-IR법으로 측정한 값(ASTM F-121, 1979년), k는 볼츠만 정수 8.617×10-5(eV/K)이다.)
- 제 15항에 있어서, 박리된 활성층측 웨이퍼의 표면을 경면 연마하고, 새로운 SOI웨이퍼의 활성층을 형성하는 기판으로서 반복 사용하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 15항 또는 제 16항에 있어서, 상기 활성층측 규소 웨이퍼가, 중성자 조사에 의해 인이 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 15항 내지 제 17항 중 어느 한 항에 있어서, 상기 활성층측 규소 웨이퍼가, 질소가 2×1013 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제 15항 내지 제 18항 중 어느 한 항에 있어서, 상기 활성층측 규소 웨이퍼가, 탄소가 5×1016 atoms/cm3이상 도핑된 규소 단결정을 사용하여 제작되는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
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