JP7144908B2 - 半導体構造体および半導体構造体を形成する方法 - Google Patents
半導体構造体および半導体構造体を形成する方法 Download PDFInfo
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- JP7144908B2 JP7144908B2 JP2020526553A JP2020526553A JP7144908B2 JP 7144908 B2 JP7144908 B2 JP 7144908B2 JP 2020526553 A JP2020526553 A JP 2020526553A JP 2020526553 A JP2020526553 A JP 2020526553A JP 7144908 B2 JP7144908 B2 JP 7144908B2
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- diffusion barrier
- ion diffusion
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- gate dielectric
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Description
Claims (20)
- ソース/ドレイン領域間に位置づけられた少なくとも1つのチャンネル領域を含む半導体基板と、
前記半導体基板の前記チャンネル領域上に配置されたゲート誘電体材料と、
前記ゲート誘電体材料上に配置されたバッテリ・スタックであり、前記バッテリ・スタックが、前記ゲート誘電体材料上に配置されたカソード集電体と、前記カソード集電体上に配置されたカソード材料と、前記カソード材料上に配置された第1のイオン拡散障壁材料と、前記第1のイオン拡散障壁材料上に配置された電解質と、前記電解質上に配置された第2のイオン拡散障壁材料と、前記第2のイオン拡散障壁材料上に配置されたアノード領域と、前記アノード領域上に配置されたアノード集電体とを含む、前記バッテリ・スタックと
を含む半導体構造体。 - 前記ゲート誘電体材料が、前記バッテリ・スタックの側壁縁部に垂直に位置合わせされた側壁縁部を有する、請求項1に記載の半導体構造体。
- 前記第1および第2のイオン拡散障壁材料が、1E-6cm2/s未満のイオン拡散係数を有する、請求項1に記載の半導体構造体。
- 前記第1および第2のイオン拡散障壁材料が、二酸化シリコン、酸化アルミニウム、フッ化アルミニウム、酸化マグネシウム、またはそれらの多層スタックを含む、請求項3に記載の半導体構造体。
- 前記第1および第2のイオン拡散障壁材料が、完全に酸化アルミニウム(Al2O3)から構成される、請求項3に記載の半導体構造体。
- 前記半導体基板がバルク半導体基板である、請求項1に記載の半導体構造体。
- 前記半導体基板が、半導体-オン-絶縁体基板の最上部半導体材料層である、請求項1に記載の半導体構造体。
- 前記ゲート誘電体材料および前記バッテリ・スタックの一部が、前記ソース/ドレイン領域の上に延びる、請求項1に記載の半導体構造体。
- 前記ゲート誘電体材料が高kゲート誘電体材料を含む、請求項1に記載の半導体構造体。
- 前記高kゲート誘電体材料が、HfO2、ZrO2、La2O3、Al2O3、TiO2、SrTiO3、LaAlO3、Y2O3、HfOxNy、ZrOxNy、La2OxNy、Al2OxNy、TiOxNy、SrTiOxNy、LaAlOxNy、Y2OxNy、SiON、SiNx、それらのケイ酸塩、またはそれらの合金を含み、xの値が、独立して、0.5から3であり、yの各値が、独立して、0から2である、請求項9に記載の半導体構造体。
- 前記カソード材料がリチウム化材料である、請求項1に記載の半導体構造体。
- 前記電解質が、固体電解質、液体タイプ電解質、またはゲル・タイプ電解質を含む、請求項1に記載の半導体構造体。
- 前記バッテリ・スタックが不揮発性である、請求項1に記載の半導体構造体。
- 半導体構造体を形成する方法であって、前記方法が、
半導体基板の表面にゲート誘電体材料およびバッテリ・スタックの材料スタックを生成することであり、前記バッテリ・スタックが、前記ゲート誘電体材料上に配置されたカソード集電体と、前記カソード集電体上に配置されたカソード材料と、前記カソード材料上に配置された第1のイオン拡散障壁材料と、前記第1のイオン拡散障壁材料上に配置された電解質と、前記電解質上に配置された第2のイオン拡散障壁材料と、前記第2のイオン拡散障壁材料の頂上に配置されたアノード集電体とを含む、前記生成することと、
前記半導体基板中におよび前記材料スタックの両側にソース/ドレイン領域を形成することであり、前記ソース/ドレイン領域を前記形成することが、前記材料スタックの前記生成の前または後に実行され得る、前記形成することと
を含む、方法。 - 前記第1および第2のイオン拡散障壁材料が、1E-6cm2/s未満のリチウム拡散係数を有する、請求項14に記載の方法。
- 前記第1および第2のイオン拡散障壁材料が、二酸化シリコン、酸化アルミニウム、フッ化アルミニウム、酸化マグネシウム、またはそれらの多層スタックを含む、請求項15に記載の方法。
- 前記ソース/ドレイン領域が、前記ゲート誘電体材料の形成の前に形成される、請求項14に記載の方法。
- 前記ソース/ドレイン領域が、前記材料スタックの形成の後に形成される、請求項14に記載の方法。
- 前記アノード集電体の形成の前に前記第2のイオン拡散障壁材料上にアノード領域を堆積させることをさらに含む、請求項14に記載の方法。
- 前記材料スタックの前記生成の後に、前記第2のイオン拡散障壁材料と前記アノード集電体との間にアノード領域を形成することをさらに含む、請求項14に記載の方法。
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