JP5186101B2 - 多層に応力が加えられたゲート電極を有するfinFET構造体 - Google Patents
多層に応力が加えられたゲート電極を有するfinFET構造体 Download PDFInfo
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Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/62—Fin field-effect transistors [FinFET]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/024—Manufacture or treatment of FETs having insulated gates [IGFET] of fin field-effect transistors [FinFET]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/791—Arrangements for exerting mechanical stress on the crystal lattice of the channel regions
Landscapes
- Thin Film Transistor (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
Description
12:埋込み誘電体層
12’:エッチングされた埋込み誘電体層
14:半導体層
14a:半導体フィン
16:ハードマスク層
16a:パターン形成されたハードマスク層
16’:連続的スペーサ層
18:パターン形成されたフォトレジト層
20:ゲート誘電体層
22:ゲート電極
22’:部分的にアモルファス化されたゲート電極
22’’:再結晶化されたゲート電極
24:パッド誘電体層
26:応力付与層
28:シリサイド層
30:第2の応力付与層
Claims (6)
- 基板の上に配置された半導体フィンと、
前記半導体フィンの側壁上に配置されたゲート誘電体と、
前記半導体フィン及び前記ゲート誘電体を覆う逆U字形状のゲート電極であって、前記半導体フィンのより近くに配置されたコンフォーマルな第1の領域における第1の応力と、該半導体フィンからより遠くに配置されたコンフォーマルな第2の領域における、前記第1の応力とは異なる第2の応力とを有するゲート電極と、
前記ゲート電極によって覆われていない前記半導体フィンの端部に設けられた一対のソース/ドレイン領域と、
を備えるフィンFET構造体。 - 前記基板が半導体オン・インシュレータ基板である、請求項1に記載のフィンFET構造体。
- 前記半導体フィンは、Si、SiC、SiGe、SiGeC、Ge、GaAs、InAs、InP、他のIII−V族又はII−VI族化合物半導体材料及び有機半導体材料からなる群から選択された半導体材料を備える、請求項1に記載のフィンFET構造体。
- 前記半導体フィンは、前記基板内の台座の上に配置される、請求項1に記載のフィンFET構造体。
- 前記ゲート電極の上に配置された、前記第2の応力及び前記第1の応力とは異なる第3の応力を有する応力付与層をさらに備える、請求項1に記載のフィンFET構造体。
- 構造体を製造する方法であって、
基板の上に半導体フィンを形成するステップと、
前記半導体フィンのより近くに配置された第1の領域における第1の応力と、該半導体フィンからより遠くに配置された第2の領域における、前記第1の応力とは異なる第2の応力とを有するゲート電極を、該半導体フィンの上に形成するステップとを含み、
前記ゲート電極を形成するステップは、
前記半導体フィンを覆う逆U字形状のゲート電極材料を形成するステップと、
前記逆U字形状のゲート電極材料にイオン注入して部分的にアモルファス化されたゲート電極を形成するステップであって、前記ゲート電極は、前記半導体フィンのより近くのアモルファス化されていない領域と、前記半導体フィンからより遠くのアモルファス化された領域とを含む、ステップと、
前記部分的にアモルファス化されたゲート電極上に応力付与層を形成するステップと、
前記応力付与層の形成後の前記ゲート電極をアニールして、前記ゲート電極の前記アモルファス化された領域を再結晶化させて前記第2の応力を有する前記第2の領域を形成するステップと、
前記アニール後に前記応力付与層を除去するステップとを含み、
前記ゲート電極の前記アモルファス化されていない領域は、前記第1の応力を有する前記第1の領域を提供する、方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/164,621 US7564081B2 (en) | 2005-11-30 | 2005-11-30 | finFET structure with multiply stressed gate electrode |
US11/164621 | 2005-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007158329A JP2007158329A (ja) | 2007-06-21 |
JP5186101B2 true JP5186101B2 (ja) | 2013-04-17 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2006317780A Active JP5186101B2 (ja) | 2005-11-30 | 2006-11-24 | 多層に応力が加えられたゲート電極を有するfinFET構造体 |
Country Status (3)
Country | Link |
---|---|
US (2) | US7564081B2 (ja) |
JP (1) | JP5186101B2 (ja) |
CN (1) | CN1976059A (ja) |
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