JP2005108875A - 半導体装置及びその製造方法 - Google Patents
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Abstract
【解決手段】本発明の一態様の半導体装置は、半導体基板(101)と、4価金属酸化物または4価金属酸化物とSiO2との混合物または4価金属酸化物とSiONとの混合物を主成分とする材料から構成されているゲート絶縁膜(105)と、4〜5.5eVの仕事関数を有する金属からなるゲート電極(115)と、を備え、前記ゲート絶縁膜は、前記半導体基板上でnMOS構造をなす場合にBを、前記半導体基板上でpMOS構造をなす場合にP及びAsの少なくとも一方を含む。
【選択図】 図1
Description
本発明の目的は、1種類の金属をnMOSとpMOSのゲート電極に用いた良好な半導体装置及びその製造方法を提供することにある。
図2〜図11は、第1の実施の形態に係る半導体装置の製造工程を示す断面図である。なお、図2〜図11は、1対のnMOSとpMOSに関する実施形態を示しているが、実際には同一基板上に隣り合わせで存在する必要はない。勿論、本実施の形態はSOI(Silicon On Insulator)のMOSFETにも使うことができ、縦型MOS(基板に対して垂直方向にチャネルがあり、電子や正孔はそれに沿って基板に対して垂直に走行する。)にも応用することができる。
図12〜図15は、第2の実施の形態に係る半導体装置の製造工程を示す断面図である。
図16〜図23は、第3の実施の形態に係る半導体装置の製造工程を示す断面図である。
図24〜図30は、第4の実施の形態に係る半導体装置の製造工程を示す断面図である。
図33〜図42は、第5の実施の形態に係る半導体装置の製造工程を示す断面図である。
上記第1〜第5の実施の形態は、単独で用いても、適宜組み合わせても、さらに以下の方法も組み合わせても良い。
Claims (4)
- 半導体基板と、
4価金属酸化物または4価金属酸化物とSiO2との混合物または4価金属酸化物とSiONとの混合物を主成分とする材料から構成されているゲート絶縁膜と、
4〜5.5eVの仕事関数を有する金属からなるゲート電極と、を備え、
前記ゲート絶縁膜は、前記半導体基板上でnMOS構造をなす場合にBを、前記半導体基板上でpMOS構造をなす場合にP及びAsの少なくとも一方を含むことを特徴とする半導体装置。 - 前記ゲート絶縁膜がHf及びZrの少なくとも一方を含むことを特徴とする請求項1に記載の半導体装置。
- 半導体基板にチャネル領域を形成し、
前記チャネル領域上に、4価金属酸化物または4価金属酸化物とSiO2との混合物または4価金属酸化物とSiONとの混合物を主成分とする材料から構成されているゲート絶縁膜を形成し、
前記ゲート絶縁膜に、前記半導体基板上でnMOS構造をなす場合にBを、前記半導体基板上でpMOS構造をなす場合にP及びAsの少なくとも一方を注入し、
前記ゲート絶縁膜上に、4〜5.5eVの仕事関数を有する金属からなるゲート電極を形成することを特徴とする半導体装置の製造方法。 - 前記P,As,Bはゲート電極から拡散によってゲート絶縁膜中に導入する工程を含むことを特徴とする請求項3に記載の半導体装置の製造方法。
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JP2003335966A JP3790242B2 (ja) | 2003-09-26 | 2003-09-26 | 半導体装置及びその製造方法 |
US10/738,049 US7375403B2 (en) | 2003-09-26 | 2003-12-18 | Semiconductor device and method of manufacturing the same |
US12/081,824 US7687869B2 (en) | 2003-09-26 | 2008-04-22 | Semiconductor device and method of manufacturing the same |
US12/659,250 US7968397B2 (en) | 2003-09-26 | 2010-03-02 | Semiconductor device and method of manufacturing the same |
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Cited By (7)
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JP2006019351A (ja) * | 2004-06-30 | 2006-01-19 | Renesas Technology Corp | 半導体装置の製造方法および半導体装置 |
JP2006024594A (ja) * | 2004-07-06 | 2006-01-26 | Nec Corp | 半導体装置およびその製造方法 |
JP2006339208A (ja) * | 2005-05-31 | 2006-12-14 | Sanyo Electric Co Ltd | 半導体装置 |
JP2007095887A (ja) * | 2005-09-28 | 2007-04-12 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2009164207A (ja) * | 2007-12-28 | 2009-07-23 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2016066805A (ja) * | 2012-01-06 | 2016-04-28 | 日立化成株式会社 | パッシベーション膜形成用組成物、パッシベーション膜付半導体基板及びその製造方法、並びに太陽電池素子及びその製造方法 |
JP2017076802A (ja) * | 2012-01-06 | 2017-04-20 | 日立化成株式会社 | パッシベーション膜付半導体基板及びその製造方法、並びに太陽電池素子及びその製造方法 |
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US7105889B2 (en) * | 2004-06-04 | 2006-09-12 | International Business Machines Corporation | Selective implementation of barrier layers to achieve threshold voltage control in CMOS device fabrication with high k dielectrics |
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2008
- 2008-04-22 US US12/081,824 patent/US7687869B2/en not_active Expired - Fee Related
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JP2006019351A (ja) * | 2004-06-30 | 2006-01-19 | Renesas Technology Corp | 半導体装置の製造方法および半導体装置 |
JP2006024594A (ja) * | 2004-07-06 | 2006-01-26 | Nec Corp | 半導体装置およびその製造方法 |
JP2006339208A (ja) * | 2005-05-31 | 2006-12-14 | Sanyo Electric Co Ltd | 半導体装置 |
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JP2007095887A (ja) * | 2005-09-28 | 2007-04-12 | Toshiba Corp | 半導体装置及びその製造方法 |
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JP2009164207A (ja) * | 2007-12-28 | 2009-07-23 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2016066805A (ja) * | 2012-01-06 | 2016-04-28 | 日立化成株式会社 | パッシベーション膜形成用組成物、パッシベーション膜付半導体基板及びその製造方法、並びに太陽電池素子及びその製造方法 |
JP2017076802A (ja) * | 2012-01-06 | 2017-04-20 | 日立化成株式会社 | パッシベーション膜付半導体基板及びその製造方法、並びに太陽電池素子及びその製造方法 |
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US20050067704A1 (en) | 2005-03-31 |
US7968397B2 (en) | 2011-06-28 |
US7375403B2 (en) | 2008-05-20 |
US7687869B2 (en) | 2010-03-30 |
US20100159686A1 (en) | 2010-06-24 |
US20080265324A1 (en) | 2008-10-30 |
JP3790242B2 (ja) | 2006-06-28 |
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