JP7420822B2 - 一方向のプレートライン及びビットライン並びにピラーキャパシタを有する高密度低電圧nvm - Google Patents
一方向のプレートライン及びビットライン並びにピラーキャパシタを有する高密度低電圧nvm Download PDFInfo
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- JP7420822B2 JP7420822B2 JP2021546823A JP2021546823A JP7420822B2 JP 7420822 B2 JP7420822 B2 JP 7420822B2 JP 2021546823 A JP2021546823 A JP 2021546823A JP 2021546823 A JP2021546823 A JP 2021546823A JP 7420822 B2 JP7420822 B2 JP 7420822B2
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
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Description
一部の実施形態において、中心の又はコアの導電性酸化物層114が、材料421及び422のスタックで置き換えられ、421は、例えばCu、Co、Ru、Ta、又はW(又はこれらの組み合わせ)などの金属であり、422は、Cu、Co、Ru、Ta、W、TaN、WN、又はこれらの組み合わせのうちの1つ以上で形成されるビア層である。一部の実施形態において、層421及び422の材料のスタックは、メタルコーティング411a、411b、及び411cによって覆われる。一部の実施形態において、図3A-3Bの側壁バリアシール301がピラーキャパシタ420にも使用され得る。一部の実施形態において、スタックの長さLstackは、5nmから200nmの範囲である。一部の実施形態において、層421の厚さt421は、10nmから60nmの範囲内である。一部の実施形態において、層422の厚さt422は、10nmから60nmの範囲内である。図4A-4Bの実施形態は、ここに記載される実施形態のいずれにも使用されることができる。
前記インプロパー強誘電体は、[PTO/STO]n又は[LAO/STO]nのうちの一方を含み、‘n’は1から100の間である、例92のシステム。
Claims (16)
- ソース、ドレイン、及びゲートを持つトランジスタと、
前記ゲートに結合されたワードラインと、
第1方向に延在するビットラインであり、前記トランジスタの前記ソース又は前記ドレインのうちの一方に結合されたビットラインと、
前記第1方向に延在するプレートラインと、
前記トランジスタの前記ソース又は前記ドレインのうちの他方に1つ以上のビアを介して結合され且つ前記プレートラインに結合された容量構造であり、
反転U字形状を持つペロブスカイト、
前記反転U字形状の間隙領域内の第1の導電性酸化物であり、当該第1の導電性酸化物は前記ペロブスカイトの内側壁と接し、当該第1の導電性酸化物は前記間隙領域を完全に充填し、当該第1の導電性酸化物の一部が前記トランジスタの前記ソース又は前記ドレインのうちの前記他方に結合されている、第1の導電性酸化物、
前記ペロブスカイトの上面及び外側壁と接した第2の導電性酸化物であり、当該第2の導電性酸化物の一部が前記プレートラインに結合されている、第2の導電性酸化物、
前記第2の導電性酸化物の外側壁と接した絶縁材料であり、Alの酸化物を含む絶縁材料、
前記第1の導電性酸化物と前記ペロブスカイトの前記反転U字形状の底面とに接した第1の金属間化合物材料、及び
前記第2の導電性酸化物の上面と接した第2の金属間化合物材料、
を有する容量構造と、
を有し、
前記第1及び第2の金属間化合物材料は、前記ペロブスカイトの強誘電特性を維持するように構成されている、
装置。 - 前記絶縁材料は更にTiを含む、請求項1に記載の装置。
- 前記トランジスタは、プレーナトランジスタ又は非プレーナトランジスタのうちの一方である、請求項1又は2に記載の装置。
- 前記ペロブスカイトは、La又はランタニドでドープされている、請求項1乃至3のいずれか一項に記載の装置。
- 前記第1の金属間化合物材料は、Ti、V、Cr、Mn、Zr、Nb、Mo、Tc、Ru、Rh、Hf、Ta、W、Re、Os、Ir、Al又はCoのうちの1つ以上を含む導電材料である、請求項1乃至4のいずれか一項に記載の装置。
- 前記トランジスタはダイのバックエンドに位置し、又は前記トランジスタはダイのフロントエンドに位置し、又は前記容量構造は、形状が円筒形である、請求項1乃至5のいずれか一項に記載の装置。
- 前記第1の導電性酸化物又は前記第2の導電性酸化物は、Ir、Ru、Pd、Os又はReのうちの1つ以上の酸化物を含む、請求項1乃至6のいずれか一項に記載の装置。
- 前記ペロブスカイトは、LaCoO3、SrCoO3、SrRuO3、LaMnO3、SrMnO3、YBa2Cu3O7、Bi2Sr2CaCu2O8、又はLaNiO3のうちの1つを含む、請求項1に記載の装置。
- 前記ペロブスカイトは、La、Sr、Co、Ru、Mn、Y、Na、Cu、又はNiのうちの1つを含む、請求項1に記載の装置。
- 前記ペロブスカイトは、前記ペロブスカイトを通るリークを制御するためにSc又はMnでドープされている、請求項1に記載の装置。
- メモリビットセルを形成する方法であって、
ソース、ドレイン、及びゲートを持つトランジスタを形成することと、
前記ゲートに結合されたワードラインを形成することと、
第1方向に延在するビットラインであり、前記トランジスタの前記ソース又は前記ドレインのうちの一方に結合されたビットライン、を形成することと、
前記第1方向に延在するプレートラインを形成することと、
前記トランジスタの前記ソース又は前記ドレインのうちの他方に1つ以上のビアを介して結合された容量構造を形成することであり、
反転U字形状を持つペロブスカイトを形成すること、
前記反転U字形状の間隙領域内の第1の導電性酸化物であり、当該第1の導電性酸化物は前記間隙領域を完全に充填し、当該第1の導電性酸化物の一部が前記トランジスタの前記ソース又は前記ドレインのうちの前記他方に結合される、第1の導電性酸化物、を形成すること、
前記ペロブスカイトの上面及び外側壁と接した第2の導電性酸化物であり、当該第2の導電性酸化物の一部が前記プレートラインに結合される、第2の導電性酸化物、を形成すること、
前記第2の導電性酸化物の外側壁と接した絶縁材料であり、Alの酸化物を含む絶縁材料、を形成すること、
前記第1の導電性酸化物と前記ペロブスカイトの前記反転U字形状の底面とに接した第1の金属間化合物材料、を形成すること、及び
前記第2の導電性酸化物の上面と接した第2の金属間化合物材料を形成すること、
を有する、容量構造を形成することと、
を有し、
前記第1及び第2の金属間化合物材料は、前記ペロブスカイトの強誘電特性を維持するように構成される、
方法。 - 前記絶縁材料は更にTiを含み、
前記トランジスタは、プレーナトランジスタ又は非プレーナトランジスタのうちの一方であり、
前記ペロブスカイトは、La又はランタニドでドープされており、
前記第1の金属間化合物材料は、Ti、V、Cr、Mn、Zr、Nb、Mo、Tc、Ru、Rh、Hf、Ta、W、Re、Os、Ir、Al又はCoのうちの1つ以上を含み、且つ
前記トランジスタはダイのバックエンドに位置し、又は前記トランジスタはダイのフロントエンドに位置する、
請求項11に記載の方法。 - 1つ以上の命令を実行するプロセッサ回路と、
1つ以上の命令を格納するメモリと、
前記プロセッサ回路が別のデバイスと通信することを可能にする通信インタフェースと、
を有し、
前記メモリは、請求項1乃至10のいずれか一項に記載の装置を有する、
システム。 - 反転U字形状を持つペロブスカイト材料であり、Mn又はScドーパントを含むペロブスカイト材料と、
前記反転U字形状の間隙領域内の第1の導電性酸化物であり、当該第1の導電性酸化物は前記ペロブスカイト材料の内側壁と接し、当該第1の導電性酸化物は前記間隙領域を完全に充填している、第1の導電性酸化物と、
前記ペロブスカイト材料の上面及び外側壁と接した第2の導電性酸化物と、
前記第2の導電性酸化物の外側壁と接した絶縁材料と、
前記第1の導電性酸化物と前記ペロブスカイト材料の前記反転U字形状の底面とに接した第1の金属間化合物材料と、
前記第2の導電性酸化物の上面と接した第2の金属間化合物材料と、
を有し、
前記第1及び第2の金属間化合物材料は、前記ペロブスカイト材料の強誘電特性を維持するように構成されている、
容量構造体。 - 前記第1の導電性酸化物は、第1の材料の層と第2の材料の層とのスタックを有する構造の一部であり、前記第1の材料は、Cu、Co、Ru、Ta、又はWのうちの1つを含み、前記第2の材料は、Cu、Co、Ru、Ta、W、TaN、又はWNのうちの1つを含む、請求項14に記載の容量構造体。
- 前記第1の金属間化合物材料又は前記第2の金属間化合物材料は、Ti、V、Cr、Mn、Zr、Nb、Mo、Tc、Ru、Rh、Hf、Re、Os、Ir、Al、Ta、W、又はCoのうちの1つ以上を含む、請求項14に記載の容量構造体。
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JP2022525725A (ja) | 2022-05-19 |
US20200273864A1 (en) | 2020-08-27 |
KR102561137B1 (ko) | 2023-07-31 |
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US11482529B2 (en) | 2022-10-25 |
TWI738226B (zh) | 2021-09-01 |
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TWI791259B (zh) | 2023-02-01 |
US11476260B2 (en) | 2022-10-18 |
DE112020000955T5 (de) | 2021-12-02 |
TW202145516A (zh) | 2021-12-01 |
TW202105686A (zh) | 2021-02-01 |
KR20210110894A (ko) | 2021-09-09 |
US20200273866A1 (en) | 2020-08-27 |
US20220392907A1 (en) | 2022-12-08 |
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