JP2008282901A - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
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- JP2008282901A JP2008282901A JP2007124264A JP2007124264A JP2008282901A JP 2008282901 A JP2008282901 A JP 2008282901A JP 2007124264 A JP2007124264 A JP 2007124264A JP 2007124264 A JP2007124264 A JP 2007124264A JP 2008282901 A JP2008282901 A JP 2008282901A
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
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Abstract
【解決手段】半導体基板11の素子形成領域12を挟むようにして該半導体基板11に埋め込んで形成された素子分離領域13と、ゲート絶縁膜21を介して素子形成領域12を横切るように形成されたゲート電極22と、ゲート電極22の両側の素子形成領域12に形成されたソース・ドレイン領域27、28とを備え、ゲート電極22下における素子形成領域12からなるチャネル領域14が素子分離領域13より突出するように形成されていて、ソース・ドレイン領域27、28は素子分離領域14の表面より深い位置まで形成されていることを特徴とする。
【選択図】図1
Description
チャネル領域14に応力を印加するためのストレスライナー膜71が形成されている。このストレスライナー膜71は、例えば窒化シリコン膜で形成され、例えばプラズマCVD法によって成膜される。この成膜条件を変更することによって、引張応力を有する窒化シリコン膜を形成することも、圧縮応力を有する窒化シリコン膜を形成することもできる。例えば、半導体装置3が、p型のFET(電界効果トランジスタ)の場合、ストレスライナー膜71にはコンプレッシブストレスライナー膜を用い、チャネル領域14に圧縮応力を与える。また、n型のFET(電界効果トランジスタ)の場合、ストレスライナー膜71には、テンサイルストレスライナー膜を用い、チャネル領域14に引張応力を与える。
Claims (7)
- 半導体基板の素子形成領域を挟むようにして該半導体基板に埋め込んで形成された素子分離領域と、
前記素子形成領域上にゲート絶縁膜を介して前記素子形成領域を横切るように形成されたゲート電極と、
前記ゲート電極の両側の前記素子形成領域に形成されたソース・ドレイン領域とを備え、
前記ゲート電極下における前記素子形成領域からなるチャネル領域が前記素子分離領域より突出するように形成されていて、
前記ソース・ドレイン領域は前記素子分離領域の表面より深い位置まで形成されている
ことを特徴とする半導体装置。 - 前記ソース・ドレイン領域の表面は前記半導体基板の表面と同等の高さもしくは前記半導体基板の表面より高い位置にある
ことを特徴とする請求項1記載の半導体装置。 - 前記ソース・ドレイン領域は前記チャネル領域に応力を印加する応力印加層からなる
ことを特徴とする請求項1記載の半導体装置。 - 前記ゲート電極上を被覆して前記チャネル領域に応力を印加する応力印加絶縁膜が形成されている
ことを特徴とする請求項1記載の半導体装置。 - 半導体基板に素子形成領域を挟むようにかつ該半導体基板に埋め込まれるように素子分離領域を形成する工程と、
前記素子形成領域上に前記素子形成領域を横切るようにダミーゲートを形成する工程と、
前記ダミーゲートの両側の前記素子形成領域にソース・ドレイン領域の接合位置が前記素子分離領域の表面より深い位置になるように該ソース・ドレイン領域を形成する工程と、
前記半導体基板上に前記ダミーゲートの表面を露出させた状態に第1絶縁膜を形成する工程と、
前記ダミーゲートを除去して溝を形成する工程と、
前記溝内の前記素子分離領域の上部を除去する工程と、
前記溝内の前記半導体基板上にゲート絶縁膜を介してゲート電極を形成する工程と
を備えたことを特徴とする半導体装置の製造方法。 - 前記ソース・ドレイン領域は前記チャネル領域に応力を印加する応力印加層で形成する
ことを特徴とする請求項5記載の半導体装置の製造方法。 - 前記ゲート電極を形成した後、
前記第1絶縁膜を除去する工程と、
前記半導体基板上に前記ゲート電極上を被覆して前記チャネル領域に応力を印加する応力印加絶縁膜を形成する工程と
を備えたことを特徴とする請求項5記載の半導体装置の製造方法。
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JP2007124264A JP2008282901A (ja) | 2007-05-09 | 2007-05-09 | 半導体装置および半導体装置の製造方法 |
TW097113656A TWI383501B (zh) | 2007-05-09 | 2008-04-15 | 半導體裝置及其製造方法 |
DE102008064959.7A DE102008064959B3 (de) | 2007-05-09 | 2008-04-28 | Halbleitervorrichtungen |
DE102008021182.6A DE102008021182B4 (de) | 2007-05-09 | 2008-04-28 | Halbleitereinrichtung und Herstellungsverfahren für eine Halbleitereinrichtung |
US12/115,931 US8049286B2 (en) | 2007-05-09 | 2008-05-06 | Semiconductor device and semiconductor device manufacturing method |
KR1020080042342A KR101457007B1 (ko) | 2007-05-09 | 2008-05-07 | 반도체 장치 및 반도체 장치의 제조 방법 |
CN2008100952894A CN101304028B (zh) | 2007-05-09 | 2008-05-09 | 半导体器件和半导体器件的制造方法 |
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