JP2017147458A - 集積回路のトランジスタ構造 - Google Patents
集積回路のトランジスタ構造 Download PDFInfo
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- JP2017147458A JP2017147458A JP2017079449A JP2017079449A JP2017147458A JP 2017147458 A JP2017147458 A JP 2017147458A JP 2017079449 A JP2017079449 A JP 2017079449A JP 2017079449 A JP2017079449 A JP 2017079449A JP 2017147458 A JP2017147458 A JP 2017147458A
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- 229910000577 Silicon-germanium Inorganic materials 0.000 claims abstract description 125
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 239000004065 semiconductor Substances 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 64
- 238000000151 deposition Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 48
- 230000003647 oxidation Effects 0.000 description 27
- 238000007254 oxidation reaction Methods 0.000 description 27
- 238000009792 diffusion process Methods 0.000 description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 239000010703 silicon Substances 0.000 description 12
- 229910052732 germanium Inorganic materials 0.000 description 8
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000013403 standard screening design Methods 0.000 description 1
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- H01L29/7848—Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate the means being located in the source/drain region, e.g. SiGe source and drain
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Abstract
【解決手段】SiGeストレッサを形成する方法であって、前記方法は、ソース領域とドレイン領域間にチャネルを有する半導体基板上のソース領域とドレイン領域の少なくとも1つに第1SiGe層を堆積するステップ、及び前記第1SiGe層の上部を酸化層に変換し、前記第1SiGe層の底部を第2SiGe層に変換するステップを含み、前記第2SiGe層は、前記第1SiGe層より高いGe濃度を有する方法。
【選択図】図1C
Description
104 チャネル
106、110 SiGe膜層
108 Siキャップ層
112 酸化層
114 SiGeストレッサ
116 スペーサ層
118、206 ゲート
202 SiGeエピ層
204 誘電体層
208 側壁スペーサ
402、204 フィン領域
406 シャロートレンチアイソレーション
Claims (4)
- 集積回路のトランジスタ構造であって、
半導体基板と、
前記半導体基板上に配置されたゲート及び前記ゲートに隣接する側壁スペーサと、
前記半導体基板上のソース領域又はドレイン領域の少なくとも1つに位置する第1SiGe層であって、前記第1SiGe層は、50%よりも高いGe濃度、0%よりも高いSi濃度を有し、前記ソース領域又は前記ドレイン領域にわたって連続し、前記ゲートの一部の下方及び前記側壁スペーサの下方に延びる、第1SiGe層と、
前記第1SiGe層の下方に位置する第2SiGe層であって、前記第2SiGe層は、前記第1SiGe層よりも低いGe濃度を有し、前記ゲートの下方に延びる、第2SiGe層と、
前記ソース領域と前記ドレイン領域との間のチャネルであって、前記チャネルは、SiGeを含み、前記第2SiGe層のGe濃度は、前記チャネルにおけるSiGeのGe濃度よりも高い、チャネルと、を含み、
前記集積回路のトランジスタ構造は、平面トランジスタ構造である、
集積回路のトランジスタ構造。 - 前記半導体基板は、Si、SiGe、及び、Si上の緩和SiGe膜からなるグループから選択された1つを含む、
請求項1に記載の集積回路のトランジスタ構造。 - 前記第1SiGe層は、前記ソース領域及び前記ドレイン領域の両方に位置する、
請求項1又は2に記載の集積回路のトランジスタ構造。 - 前記第2SiGe層は、前記ソース領域及び前記ドレイン領域の各々に位置する、
請求項1から3のいずれか1項に記載の集積回路のトランジスタ構造。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22925309P | 2009-07-28 | 2009-07-28 | |
US61/229,253 | 2009-07-28 | ||
US12/831,842 US8623728B2 (en) | 2009-07-28 | 2010-07-07 | Method for forming high germanium concentration SiGe stressor |
US12/831,842 | 2010-07-07 |
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Application Number | Title | Priority Date | Filing Date |
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JP2015168537A Division JP6440600B2 (ja) | 2009-07-28 | 2015-08-28 | 集積回路のトランジスタ構造 |
Publications (2)
Publication Number | Publication Date |
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JP2017147458A true JP2017147458A (ja) | 2017-08-24 |
JP6503401B2 JP6503401B2 (ja) | 2019-04-17 |
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Application Number | Title | Priority Date | Filing Date |
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JP2010169487A Active JP5465630B2 (ja) | 2009-07-28 | 2010-07-28 | 高ゲルマニウム濃度のSiGeストレッサの形成方法 |
JP2013219811A Pending JP2014045208A (ja) | 2009-07-28 | 2013-10-23 | 集積回路のトランジスタ構造 |
JP2015168537A Active JP6440600B2 (ja) | 2009-07-28 | 2015-08-28 | 集積回路のトランジスタ構造 |
JP2017079449A Active JP6503401B2 (ja) | 2009-07-28 | 2017-04-13 | 集積回路のトランジスタ構造 |
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Application Number | Title | Priority Date | Filing Date |
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JP2010169487A Active JP5465630B2 (ja) | 2009-07-28 | 2010-07-28 | 高ゲルマニウム濃度のSiGeストレッサの形成方法 |
JP2013219811A Pending JP2014045208A (ja) | 2009-07-28 | 2013-10-23 | 集積回路のトランジスタ構造 |
JP2015168537A Active JP6440600B2 (ja) | 2009-07-28 | 2015-08-28 | 集積回路のトランジスタ構造 |
Country Status (5)
Country | Link |
---|---|
US (3) | US8623728B2 (ja) |
JP (4) | JP5465630B2 (ja) |
KR (1) | KR101136617B1 (ja) |
CN (1) | CN101986423B (ja) |
TW (1) | TWI436433B (ja) |
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US20140091362A1 (en) | 2014-04-03 |
JP5465630B2 (ja) | 2014-04-09 |
KR101136617B1 (ko) | 2012-04-18 |
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US8623728B2 (en) | 2014-01-07 |
US20170263749A1 (en) | 2017-09-14 |
US20110024804A1 (en) | 2011-02-03 |
CN101986423B (zh) | 2014-09-10 |
JP6440600B2 (ja) | 2018-12-19 |
JP6503401B2 (ja) | 2019-04-17 |
JP2016001755A (ja) | 2016-01-07 |
TWI436433B (zh) | 2014-05-01 |
KR20110011573A (ko) | 2011-02-08 |
US10693003B2 (en) | 2020-06-23 |
US9660082B2 (en) | 2017-05-23 |
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