KR20150128574A - 실리콘으로 구성된 반도체 웨이퍼 및 그 제조 방법 - Google Patents
실리콘으로 구성된 반도체 웨이퍼 및 그 제조 방법 Download PDFInfo
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- KR20150128574A KR20150128574A KR1020150062930A KR20150062930A KR20150128574A KR 20150128574 A KR20150128574 A KR 20150128574A KR 1020150062930 A KR1020150062930 A KR 1020150062930A KR 20150062930 A KR20150062930 A KR 20150062930A KR 20150128574 A KR20150128574 A KR 20150128574A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 title claims description 11
- 239000010703 silicon Substances 0.000 title claims description 11
- 239000000758 substrate Substances 0.000 claims abstract description 86
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 26
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012298 atmosphere Substances 0.000 claims abstract description 18
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 10
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims abstract description 8
- 201000006935 Becker muscular dystrophy Diseases 0.000 claims abstract 2
- 208000037663 Best vitelliform macular dystrophy Diseases 0.000 claims abstract 2
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- 230000007547 defect Effects 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 238000005498 polishing Methods 0.000 claims description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000009977 dual effect 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
- 238000011282 treatment Methods 0.000 abstract description 9
- 235000012431 wafers Nutrition 0.000 description 88
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical group [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
Description
도 2는 예시(B1 및 B2) 및 비교예(V1 및 V2)에 기반하여, 열처리된 기판 웨이퍼의 전면으로부터의 거리(D)의 함수로서 BMD들의 밀도의 분포를 도시하는데, 여기에는 각자의 예시 및 비례예의 기판 웨이퍼의 중심에서의 분포가 예로서 표시되어 있다.
도 3은 예시(B1 및 B2) 및 비교예(V1 및 V2)에 기반하여, 열처리된 기판 웨이퍼의 중심으로부터의 방사상 위치(r)의 함수로서 BMD들의 밀도의 분포를 도시한다.
Claims (11)
- 단결정 실리콘으로 구성된 반도체 웨이퍼로서,
전면(front side)과 후면(rear side)을 갖고, 상기 반도체 웨이퍼의 중심과 가장자리 사이에서 평균적으로 8㎛ 이상 18㎛ 이하의 깊이로 상기 전면으로부터 상기 후면까지 연장되는 무결함(denuded) 구역을 갖고, 상기 무결함 구역에 인접해 있고 상기 전면으로부터 30㎛의 거리에서 2×109㎝-3 이상의 밀도의 BMD(bulk micro defect)들을 갖는 영역을 구비한 것인, 반도체 웨이퍼. - 제1항에 있어서, 상기 무결함 구역에 인접해 있는 상기 영역에서는 4×109㎝-3 이상의 피크 밀도의 BMD들이 존재하는 것인, 반도체 웨이퍼.
- 단결정 실리콘으로 구성된 반도체 웨이퍼를 제조하는 방법으로서,
단결정 실리콘으로 구성된 기판 웨이퍼 - 상기 기판 웨이퍼는 4.5×1017atom/㎝3 이상 6.0×1017atom/㎝3 이하의 농도를 갖는 격자간 산소(interstitial oxygen)를 함유함 - 를 제공하는 단계; 및
5초 이상 30초 이하의 기간 동안 1160℃ 이상 1190℃ 이하의 온도 범위 내의 제1 온도에서의 상기 기판 웨이퍼의 제1 열처리로서, 상기 기판 웨이퍼의 적어도 전면은 아르곤으로 구성된 대기에 노출되는 것인, 상기 제1 열처리와, 15초 이상 35초 이하의 기간 동안 상기 전술된 온도 범위 내의 제2 온도에서의 상기 기판 웨이퍼의 제2 열처리로서, 상기 기판 웨이퍼의 적어도 전면이 아르곤과 암모니아로 구성된 대기에 노출되는 것인, 상기 제2 열처리로 서브분할되는, 상기 기판 웨이퍼의 RTA 처리
를 포함하는 반도체 웨이퍼 제조 방법. - 제3항에 있어서, 상기 기판 웨이퍼는, 50℃/s 이상 95℃/s 이하의 온도 상승률로 상기 제1 열처리 이전에 상기 제1 온도까지 가열되고, 25℃/s 이상 50℃/s 이하의 온도 감소율로 상기 제2 열처리 이후에 상기 제2 온도로부터 냉각되는 것인, 반도체 웨이퍼 제조 방법.
- 제3항 또는 제4항에서, 아르곤과 암모니아로 구성된 상기 대기는 10:20 이상 10:1 이하의 아르곤 대 암모니아의 비를 갖는 것인, 반도체 웨이퍼 제조 방법.
- 제3항 내지 제5항 중 어느 한 항에 있어서, 상기 제2 열처리는 상기 제1 열처리 이후 1초 이하의 기간 내에 수행되고, 상기 제1 열처리와 상기 제2 열처리 사이에서의 상기 기판 웨이퍼의 온도는 1160℃ 이상 1190℃ 이하의 온도 범위에 남아 있는 것인, 반도체 웨이퍼 제조 방법.
- 제3항 내지 제6항 중 어느 한 항에 있어서, 상기 RTA 처리 이전에 이중 측면 연마를 수행하는 단계를 더 포함하고, 상기 이중 측면 연마의 과정에서는, 상기 기판 웨이퍼의 상기 전면과 상기 후면이 동시에 연마되고, 각각의 경우에서 10㎛ 내지 30㎛의 물질 제거가 획득되는 것인, 반도체 웨이퍼 제조 방법.
- 제3항 내지 제7항 중 어느 한 항에 있어서, 자연 산화물 층(native oxide layer)의 두께보다 두꺼운 화학적으로 생성된 산화물 층을 상기 기판 웨이퍼의 상기 전면 상에서 획득하기 위해, 산화제(oxidizing agent)를 이용하여 상기 RTA 처리 이전에 상기 기판 웨이퍼를 처리하는 단계를 더 포함하는, 반도체 웨이퍼 제조 방법.
- 제3항 내지 제8항 중 어느 한 항에 있어서,
0.5 부피% 이상 1.5 부피% 이하의 플루오르화 수소를 함유하는 수용성 식각제(etchant)를 이용하여 상기 기판 웨이퍼를 식각함으로써 상기 RTA 처리 이후 상기 기판 웨이퍼의 상기 전면으로부터 실리콘 산질화물 층을 제거하는 단계를 더 포함하는, 반도체 웨이퍼 제조 방법. - 제9항에 있어서, 상기 실리콘 산질화물 층을 제거하기 전에 상기 기판 웨이퍼의 가장자리를 연마하는 단계를 더 포함하는, 반도체 웨이퍼 제조 방법.
- 제9항 또는 제10항에 있어서, 상기 실리콘 질화물 층의 제거 이후 상기 기판 웨이퍼의 상기 전면을 헤이즈 프리(haze free) 연마하는 단계를 더 포함하고, 이 연마에서는 0.5㎛ 이하의 물질 제거가 획득되는 것인, 반도체 웨이퍼 제조 방법.
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DE102015200890A1 (de) * | 2015-01-21 | 2016-07-21 | Siltronic Ag | Epitaktisch beschichtete Halbleiterscheibe und Verfahren zur Herstellung einer epitaktisch beschichteten Halbleiterscheibe |
CN108660513A (zh) * | 2017-03-28 | 2018-10-16 | 上海新昇半导体科技有限公司 | 一种减少晶片缺陷的设备及方法 |
WO2020213230A1 (ja) | 2019-04-16 | 2020-10-22 | 信越半導体株式会社 | シリコン単結晶ウェーハの製造方法及びシリコン単結晶ウェーハ |
EP3929334A1 (de) * | 2020-06-23 | 2021-12-29 | Siltronic AG | Verfahren zur herstellung von halbleiterscheiben |
JP2024162803A (ja) * | 2023-05-11 | 2024-11-21 | グローバルウェーハズ・ジャパン株式会社 | 半導体ウェーハの製造方法および半導体デバイスの製造方法 |
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TWI553172B (zh) | 2016-10-11 |
KR101653345B1 (ko) | 2016-09-02 |
SG10201503181VA (en) | 2015-12-30 |
CN105097891B (zh) | 2018-05-29 |
US20150325433A1 (en) | 2015-11-12 |
JP6293087B2 (ja) | 2018-03-14 |
TW201542894A (zh) | 2015-11-16 |
DE102014208815A1 (de) | 2015-11-12 |
US9230798B2 (en) | 2016-01-05 |
JP2015216375A (ja) | 2015-12-03 |
DE102014208815B4 (de) | 2018-06-21 |
CN105097891A (zh) | 2015-11-25 |
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