KR102241303B1 - Soi웨이퍼의 제조방법 - Google Patents
Soi웨이퍼의 제조방법 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000004140 cleaning Methods 0.000 claims abstract description 123
- 238000005530 etching Methods 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- 239000010408 film Substances 0.000 claims description 173
- 239000000243 solution Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 238000005468 ion implantation Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 235000012431 wafers Nutrition 0.000 description 79
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H01L21/0223—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate
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Abstract
Description
도 2는 본 발명의 SOI웨이퍼의 제조방법의 다른 예를 나타낸 플로우도이다.
도 3은 실시예의 세정카세트내의 슬롯위치와, SOI층의 막두께의 값의 관계를 나타낸 도면이다.
도 4는 비교예 1의 세정카세트내의 슬롯위치와, SOI층의 막두께의 값의 관계를 나타낸 도면이다.
도 5는 배치식 세정을 행했을 때의, 세정카세트내의 슬롯위치와, SOI층(Si)의 절삭량의 면내평균값의 관계를 나타낸 도면이다.
도 6은 1배치 100매의 SOI웨이퍼를 배치식 열처리로에서 열산화했을 때의 노내 위치와 형성된 산화막두께(면내평균값)의 관계를 나타낸 도면이다.
도 7은 복수매의 SOI웨이퍼를 배치식 세정기와 매엽식 세정기에 의해 SC1세정을 행하고, SC1절삭량의 면내평균값과, 면내의 절삭량레인지(P-V값)를 비교한 결과를 나타낸 도면이다.
비교예 1 | 비교예 2 | 실시예 | |
산화전 SOI층 막두께 | SOI=150nm 22매 |
SOI=150nm 22매 |
SOI=150nm 46매 |
산화공정 | (산화조건) 950℃, 2시간, 파이로제닉 분위기 | ||
산화막/SOI 막두께 측정(엘립소미터) | 산화막두께=300nm, SOI=16nm, (※SOI 막두께 측정과 동시에 표면산화막도 측정가능) |
||
배치식 막두께 조정세정(HF세정+SC1세정) | HF:15%, 100초 SC1:180초 |
없음 | HF:15%, 100초 SC1:140초 |
SOI 막두께 측정(엘립소미터) | 없음 | 없음 | 배치내 SOI 막두께평균=12.3nm |
매엽식 막두께 조정세정(스핀세정기에 의한 SC1세정) | 없음 | SiO2 제거후에 실시 SC1: 160~200초 | SC1: 20~60초 |
SOI 막두께 측정(엘립소미터) | 배치내 SOI 막두께평균=12.2nm 배치내 레인지: 0.7nm 면내 레인지: 0.7nm |
배치내 SOI 막두께평균=12.2nm 배치내 레인지: 0.5nm 면내 레인지: 1.2nm |
배치내 SOI 막두께평균=11.9nm 배치내 레인지: 0.5nm 면내 레인지: 0.7nm |
12nm±0.5nm의 합격률 | 59% (합격매수 13매) |
0% | 96% (합격매수 44매) |
Claims (7)
- 절연층상에 SOI층이 형성된 SOI웨이퍼의 상기 SOI층을 소정의 두께까지 감소시키고, 상기 SOI층의 막두께를 타겟값으로 하는 SOI웨이퍼의 제조방법으로서, 적어도,
(a)산화성 가스 분위기하에서 열처리를 행하여, 상기 SOI층의 표면에 열산화막을 형성하는 공정과,
(b)상기 열산화막을 형성한 후의 SOI층의 막두께를 측정하는 공정과,
(c)상기 SOI층에 대하여 에칭성을 갖는 세정액에 상기 SOI층을 침지하는 것을 포함하는 배치식 세정을 행하는 공정으로서, 상기 SOI층의 에칭량을, 상기 공정(b)에서 측정된 SOI층의 막두께에 따라 조정함으로써, 상기 배치식 세정에 의한 에칭후의 SOI층의 막두께를, 상기 타겟값보다 두껍게 조정하는 배치식 세정공정과,
(d)상기 배치식 세정공정후의 SOI층의 막두께를 측정하는 공정과,
(e)상기 SOI층에 대하여 에칭성을 갖는 세정액에 상기 SOI층을 침지하는 것을 포함하는 매엽식 세정을 행하는 공정으로서, 상기 SOI층의 에칭량을, 상기 공정(d)에서 측정된 SOI층의 막두께에 따라 조정함으로써, 상기 매엽식 세정에 의한 에칭후의 SOI층의 막두께를, 상기 타겟값으로 조정하는 매엽식 세정공정
을 갖고, 상기 공정(a)의 후 또한 상기 공정(b)의 전, 또는 상기 공정(b)의 후 또한 상기 공정(c)의 전에, 상기 공정(a)에서 형성한 열산화막을 제거하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제1항에 있어서,
상기 공정(b)의 막두께의 측정을, 상기 공정(a)에서 형성한 열산화막을 제거하지 않고 행하고, 상기 공정(b)의 후 또한 상기 공정(c)의 전에, 상기 공정(a)에서 형성한 열산화막을, HF함유 수용액을 이용하여, 배치식 세정으로 제거한 후, 상기 공정(c)의 배치식 세정을, 상기 열산화막을 제거한 후의 SOI층의 표면을 건조시키지 않고, 상기 SOI층에 대하여 에칭성을 갖는 세정액에 상기 SOI층을 침지함으로써 행하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제1항에 있어서,
상기 SOI웨이퍼를, 적어도, 이온주입에 의해 형성된 미소기포층을 갖는 본드웨이퍼와 지지기판이 되는 베이스웨이퍼를 접합하는 공정과, 상기 미소기포층을 경계로 하여 본드웨이퍼를 박리하여 베이스웨이퍼상에 박막을 형성하는 공정을 갖는 이온주입박리법에 의해 제작된 SOI웨이퍼로 하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제2항에 있어서,
상기 SOI웨이퍼를, 적어도, 이온주입에 의해 형성된 미소기포층을 갖는 본드웨이퍼와 지지기판이 되는 베이스웨이퍼를 접합하는 공정과, 상기 미소기포층을 경계로 하여 본드웨이퍼를 박리하여 베이스웨이퍼상에 박막을 형성하는 공정을 갖는 이온주입박리법에 의해 제작된 SOI웨이퍼로 하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 배치식 세정 및 상기 매엽식 세정을, SC1용액에 침지하는 것을 포함하는 세정으로 하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 공정(c)의 배치식 세정후의 SOI층의 막두께의 배치내 평균값을, 상기 타겟값과 상기 타겟값+0.5nm의 사이에 제어하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
- 제5항에 있어서,
상기 공정(c)의 배치식 세정후의 SOI층의 막두께의 배치내 평균값을, 상기 타겟값과 상기 타겟값+0.5nm의 사이에 제어하는 것을 특징으로 하는 SOI웨이퍼의 제조방법.
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Application Number | Priority Date | Filing Date | Title |
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JPJP-P-2014-124046 | 2014-06-17 | ||
JP2014124046A JP6152829B2 (ja) | 2014-06-17 | 2014-06-17 | Soiウェーハの製造方法 |
PCT/JP2015/002042 WO2015194079A1 (ja) | 2014-06-17 | 2015-04-13 | Soiウェーハの製造方法 |
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KR20170018336A KR20170018336A (ko) | 2017-02-17 |
KR102241303B1 true KR102241303B1 (ko) | 2021-04-16 |
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US (1) | US9953860B2 (ko) |
EP (1) | EP3159911B1 (ko) |
JP (1) | JP6152829B2 (ko) |
KR (1) | KR102241303B1 (ko) |
CN (1) | CN106415784B (ko) |
SG (1) | SG11201609805PA (ko) |
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JP2004311526A (ja) * | 2003-04-02 | 2004-11-04 | Sumitomo Mitsubishi Silicon Corp | 半導体基板およびその製造方法 |
EP1840956A1 (en) | 2006-03-27 | 2007-10-03 | SUMCO Corporation | Method of producing simox wafer |
JP2008300571A (ja) | 2007-05-30 | 2008-12-11 | Shin Etsu Chem Co Ltd | Soiウェーハの製造方法 |
JP2009054837A (ja) | 2007-08-28 | 2009-03-12 | Sumco Corp | Simoxウェーハ製造方法およびsimoxウェーハ |
JP2010092909A (ja) * | 2008-10-03 | 2010-04-22 | Shin Etsu Handotai Co Ltd | Soiウェーハの製造方法 |
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JP2004349493A (ja) * | 2003-05-22 | 2004-12-09 | Canon Inc | 膜厚調整装置及びsoi基板の製造方法 |
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US20030181001A1 (en) | 2001-07-17 | 2003-09-25 | Hiroji Aga | Method for producing bonding wafer |
JP2004311526A (ja) * | 2003-04-02 | 2004-11-04 | Sumitomo Mitsubishi Silicon Corp | 半導体基板およびその製造方法 |
EP1840956A1 (en) | 2006-03-27 | 2007-10-03 | SUMCO Corporation | Method of producing simox wafer |
JP2007266059A (ja) * | 2006-03-27 | 2007-10-11 | Sumco Corp | Simoxウェーハの製造方法 |
JP2008300571A (ja) | 2007-05-30 | 2008-12-11 | Shin Etsu Chem Co Ltd | Soiウェーハの製造方法 |
JP2009054837A (ja) | 2007-08-28 | 2009-03-12 | Sumco Corp | Simoxウェーハ製造方法およびsimoxウェーハ |
JP2010092909A (ja) * | 2008-10-03 | 2010-04-22 | Shin Etsu Handotai Co Ltd | Soiウェーハの製造方法 |
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JP2016004890A (ja) | 2016-01-12 |
US9953860B2 (en) | 2018-04-24 |
TW201601296A (zh) | 2016-01-01 |
US20170200634A1 (en) | 2017-07-13 |
KR20170018336A (ko) | 2017-02-17 |
TWI611568B (zh) | 2018-01-11 |
EP3159911A4 (en) | 2018-02-28 |
CN106415784A (zh) | 2017-02-15 |
SG11201609805PA (en) | 2016-12-29 |
CN106415784B (zh) | 2019-06-07 |
WO2015194079A1 (ja) | 2015-12-23 |
EP3159911B1 (en) | 2021-06-09 |
EP3159911A1 (en) | 2017-04-26 |
JP6152829B2 (ja) | 2017-06-28 |
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