KR100847112B1 - Igbt용 실리콘 단결정 웨이퍼 및 igbt용 실리콘단결정 웨이퍼의 제조방법 - Google Patents
Igbt용 실리콘 단결정 웨이퍼 및 igbt용 실리콘단결정 웨이퍼의 제조방법 Download PDFInfo
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Abstract
Description
| 게이트 산화막두께(nm) | GOI 수율(%) | GOI 결함 밀도(cm-3) | GOI 결함의 최소 사이즈(nm) |
| 71 | 86.0 | 5.3×105 | 140nm |
| 83 | 93.0 | 2.2×105 | 165nm |
| 108 | 99.1 | 2.1×104 | 215nm |
| 저항률(Ω·cm) | ||||
| 중심 | 중심과 외주의 중간 위치 | 외주로부터 5mm의 위치 | RRG(%) | |
| 위측 | 50.7 | 50.1 | 49.5 | 2.4 |
| 끝측 | 51.2 | 50.6 | 50.1 | 2.2 |
| 이 잉곳의 저항 불균일:(51.2-49.5)/49.5×100=3.4% | ||||
| 중심 | 중심과 외주의 중간 위치 | 외주로부터 5mm의 위치 | RRG(%) | |
| 위측 | 52.4 | 53.5 | 56.5 | 7.8 |
| 끝측 | 47.6 | 48.9 | 51.2 | 7.6 |
| 이 잉곳의 저항 불균일:(56.5-47.6)/47.6×100=18.7% | ||||
Claims (11)
- 초크랄스키법에 의해 육성된 실리콘 단결정으로 이루어지고, 막두께가 50~150nm의 게이트 산화막을 구비한 IGBT의 제조에 이용되는 실리콘 단결정 웨이퍼로서,격자간 산소농도가 7.0×1017atoms/cm3 이하이며, 웨이퍼 면 내에 있어서의 저항률의 불균일이 5% 이하이며, TZDB의 합격률을 평가할 때의 게이트 산화막의 막두께 및 전극 면적을 각각 tox(cm) 및 S(cm2)로 했을 때, 게이트 산화막의 막두께의 2배 이상의 사이즈를 가진 COP의 밀도d(cm-3)가 하기 식(1)을 만족시키는 범위인 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.d≤-ln(0.9)/(S·tox/2) … (1)
- 제1항에 있어서,저항률을 R(Ω·cm)으로 했을 때, 격자간 산소농도[Oi](atoms/cm3)가 하기 식(2)를 만족시키는 범위인 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.[Oi]≤1.482×1018×R-0.2063 ····(2)
- 제1항 또는 제2항에 있어서,육성 후의 실리콘 단결정에 중성자 조사가 행해져 인이 도프 되어 있는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.
- 제1항 또는 제2항에 있어서,인과 상기 인보다도 편석계수가 작은 p형 도펀트가 각각, 1×1013atoms/cm3 이상 1×1015atoms/cm3 이하의 농도로 포함되어 있는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.
- 제1항 또는 제2항에 있어서,상기 실리콘 단결정에 1×1013atoms/cm3 이상 5×1015atoms/cm3 이하의 질소가 도프 되어 있는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.
- 초크랄스키법에 의해 실리콘 단결정을 육성함으로써 얻어지고, 막두께가 50~150nm의 게이트 산화막을 구비한 IGBT의 제조에 이용되는 실리콘 단결정 웨이퍼의 제조방법으로서,저항률을 조정하기 위한 도펀트가 첨가되어 있지 않은 실리콘 융액에 자장을 인가하여, 게이트 산화막두께의 2배 이상의 사이즈를 가진 COP 밀도d가 하기 식(3)으로 산출되는 밀도를 만족시키는 범위, 또한, 격자간 산소 농도가 7.0× 1017atoms/cm3 이하인 실리콘 단결정을 인상한 후, 인상 후의 실리콘 단결정에 중성자 조사를 행하여 인을 도프하는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼의 제조방법.d≤-ln(0.9)/(S·tox/2) … (3)단, 식(3)에 있어서, tox(cm)는 TZDB의 합격률을 평가할 때의 게이트 산화막의 막두께이며, S(cm2)는 TZDB의 합격률을 평가할 때의 전극 면적이다.
- 초크랄스키법에 의해 실리콘 단결정을 육성함으로써 얻어지고, 막두께가 50~150nm의 게이트 산화막을 구비한 IGBT의 제조에 이용되는 실리콘 단결정 웨이퍼의 제조방법으로서,인을 2.9×1013atoms/cm3 이상 2.9×1015atoms/cm3 이하, 상기 인보다도 편석계수가 작은 p형 도펀트를, 그 편석계수에 따라 결정 중의 농도가 1×1013atoms/cm3 이상 1×1015atoms/cm3 이하가 되도록 첨가한 실리콘 융액에 자장을 인가하여, 게이트 산화막두께의 2배 이상의 사이즈를 가진 COP 밀도d가 하기 식(4)로 산출되는 밀도를 만족시키는 범위, 또한, 격자간 산소 농도가 7×1017atoms/cm3 이하인 실리콘 단결정을 인상하는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼의 제조방법.d≤-ln(0.9)/(S·tox/2) … (4)단, 식(4)에 있어서, tox(cm)는 TZDB의 합격률을 평가할 때의 게이트 산화막의 막두께이며, S(cm2)는 TZDB의 합격률을 평가할 때의 전극 면적이다.
- 초크랄스키법에 의해 실리콘 단결정을 육성함으로써 얻어지고, 막두께가 50~150nm의 게이트 산화막을 구비한 IGBT의 제조에 이용되는 실리콘 단결정 웨이퍼의 제조방법으로서,n형 도펀트가 첨가된 실리콘 융액에 자장을 인가하여, 실리콘 융액 중의 도펀트 농도가 일정하도록 실리콘 융액의 양, 및 도펀트의 양을 조정하면서 실리콘 단결정을 육성하고, 게이트 산화막두께의 2배 이상의 사이즈를 가진 COP 밀도d가 하기 식(5)로 산출되는 밀도를 만족시키는 범위, 또한, 격자간 산소 농도가 7×1017atoms/cm3 이하인 실리콘 단결정을 인상하는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼의 제조방법.d≤-ln(0.9)/(S·tox/2) … (5)단, 식(5)에 있어서, tox(cm)는 TZDB의 합격률을 평가할 때의 게이트 산화막의 막두께이며, S(cm2)는 TZDB의 합격률을 평가할 때의 전극 면적이다.
- 제6항 내지 제8항의 어느 한 항에 있어서,상기 실리콘 융액에 1.4×1016atoms/cm3 이상 7.1×1018atoms/cm3 이하의 농도로 질소를 첨가하는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼의 제조방법.
- 제3항에 있어서,상기 실리콘 단결정에 1×1013atoms/cm3 이상 5×1015atoms/cm3 이하의 질소가 도프 되어 있는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.
- 제4항에 있어서,상기 실리콘 단결정에 1×1013atoms/cm3 이상 5×1015atoms/cm3 이하의 질소가 도프 되어 있는 것을 특징으로 하는 IGBT용 실리콘 단결정 웨이퍼.
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| JPJP-P-2006-00010756 | 2006-01-19 | ||
| JP2006010756A JP4631717B2 (ja) | 2006-01-19 | 2006-01-19 | Igbt用シリコン単結晶ウェーハ及びigbt用シリコン単結晶ウェーハの製造方法 |
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| JP4661204B2 (ja) * | 2004-12-16 | 2011-03-30 | 信越半導体株式会社 | 単結晶の製造方法およびアニールウェーハの製造方法ならびにアニールウェーハ |
| JP5188673B2 (ja) * | 2005-06-09 | 2013-04-24 | 株式会社Sumco | Igbt用のシリコンウェーハ及びその製造方法 |
| JP4760729B2 (ja) | 2006-02-21 | 2011-08-31 | 株式会社Sumco | Igbt用のシリコン単結晶ウェーハ及びigbt用のシリコン単結晶ウェーハの製造方法 |
| US10294583B2 (en) * | 2007-04-24 | 2019-05-21 | Sumco Techxiv Corporation | Producing method and apparatus of silicon single crystal, and silicon single crystal ingot |
| JP4829176B2 (ja) * | 2007-06-08 | 2011-12-07 | シルトロニック・ジャパン株式会社 | 単結晶の製造方法 |
| JP5321460B2 (ja) * | 2007-08-21 | 2013-10-23 | 株式会社Sumco | Igbt用シリコン単結晶ウェーハの製造方法 |
| JP5387408B2 (ja) * | 2007-08-21 | 2014-01-15 | 株式会社Sumco | Igbt用シリコン単結晶ウェーハの製造方法 |
| WO2009025341A1 (ja) * | 2007-08-21 | 2009-02-26 | Sumco Corporation | Igbt用のシリコン単結晶ウェーハ及びigbt用のシリコン単結晶ウェーハの製造方法 |
| JP5246163B2 (ja) * | 2007-08-21 | 2013-07-24 | 株式会社Sumco | Igbt用のシリコン単結晶ウェーハ及びigbt用のシリコン単結晶ウェーハの製造方法 |
| WO2009025339A1 (ja) * | 2007-08-21 | 2009-02-26 | Sumco Corporation | Igbt用のシリコン単結晶ウェーハ及びigbt用のシリコン単結晶ウェーハの製造方法 |
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| US20070186845A1 (en) | 2007-08-16 |
| KR20070077073A (ko) | 2007-07-25 |
| US7629054B2 (en) | 2009-12-08 |
| JP2007191350A (ja) | 2007-08-02 |
| JP4631717B2 (ja) | 2011-02-16 |
| US20090081856A1 (en) | 2009-03-26 |
| US8105436B2 (en) | 2012-01-31 |
| EP1811065B1 (en) | 2017-03-29 |
| DE07000774T1 (de) | 2008-02-07 |
| EP1811065A1 (en) | 2007-07-25 |
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