JP2017152708A - 相変化チャネルトランジスタ及びその駆動方法。 - Google Patents
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- H01L29/42312—Gate electrodes for field effect devices
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Abstract
【解決手段】電界の印加によりトポロジカル相転移が生じる相変化材料を含むチャネル層20と、チャネル層20に接続されたソース電極24及びドレイン電極26と、チャネル層20の第1の面上に形成された絶縁膜12と、絶縁膜12上に形成された第1のゲート電極(シリコン基板10)と、ソース電極24とドレイン電極26との間のチャネル層20の第2の面上に形成された第2のゲート電極22とを有する。
【選択図】図1
Description
第1実施形態による相変化チャネルトランジスタ及びその製造方法について図1乃至図7を用いて説明する。
第2実施形態による相変化チャネルトランジスタ及びその製造方法について図8乃至図12を用いて説明する。図1乃至図7に示す第1実施形態による相変化チャネルトランジスタ及びその製造方法と同様の構成要素には同一の符号を付し説明を省略し又は簡潔にする。
第3実施形態による相変化チャネルトランジスタ及びその製造方法について図13乃至図15を用いて説明する。図1乃至図12に示す第1及び第2実施形態による相変化チャネルトランジスタ及びその製造方法と同様の構成要素には同一の符号を付し説明を省略し又は簡潔にする。
上記実施形態に限らず種々の変形が可能である。
12…酸化シリコン層
14…フォトレジスト膜
16A…厚膜部
16B…薄膜部
16C…傾斜部
20…相変化材料層
22,22A,22B,22C…ゲート電極
24…ソース電極
26…ドレイン電極
Claims (8)
- バックゲート電極と、
前記バックゲート電極上に形成され、厚膜部と、前記厚膜部を挟むように配置された薄膜部と、前記厚膜部と前記薄膜部との境界部に配置された傾斜部とを有する絶縁膜と、
前記絶縁膜上に形成され、電界の印加によりトポロジカル相転移が生じる相変化材料を含むチャネル層と、
前記厚膜部上の前記チャネル層の上に形成されたゲート電極と、
前記チャネル層上の、前記厚膜部から前記薄膜部に至る領域に形成されたソース電極及びドレイン電極と
を有することを特徴とする相変化チャネルトランジスタ。 - バックゲート電極と、
前記バックゲート電極上に形成され、薄膜部と、前記薄膜部を挟むように配置された厚膜部と、前記薄膜部と前記厚膜部との境界部に配置された傾斜部とを有する絶縁膜と、
前記絶縁膜上に形成され、電界の印加によりトポロジカル相転移が生じる相変化材料を含むチャネル層と、
前記薄膜部上の前記チャネル層の上に形成されたゲート電極と、
前記チャネル層上の、前記薄膜部から前記厚膜部に至る領域に形成されたソース電極及びドレイン電極と
を有することを特徴とする相変化チャネルトランジスタ。 - 請求項1又は2記載の相変化チャネルトランジスタにおいて、
前記相変化材料は、電界の印加により通常の絶縁体からトポロジカル絶縁体に転移する
ことを特徴とする相変化チャネルトランジスタ。 - 請求項1乃至3のいずれか1項に記載の相変化チャネルトランジスタにおいて、
前記相変化材料は、電界の印加によりトポロジカル絶縁体から通常の絶縁体に転移する
ことを特徴とする相変化チャネルトランジスタ。 - 請求項1乃至4のいずれか1項に記載の相変化チャネルトランジスタにおいて、
前記チャネル層は、Te又はBiを主成分とする第1の結晶層と、Te又はBiを主成分とし前記第1の結晶層とは組成の異なる第2の結晶層との積層構造を有する
ことを特徴とする相変化チャネルトランジスタ。 - バックゲート電極と、前記バックゲート電極上に形成され、厚膜部と、前記厚膜部を挟むように配置された薄膜部と、前記厚膜部と前記薄膜部との境界部に配置された傾斜部とを有する絶縁膜と、前記絶縁膜上に形成され、電界の印加によりトポロジカル相転移が生じる相変化材料を含むチャネル層と、前記厚膜部上の前記チャネル層の上に形成されたゲート電極と、前記チャネル層上の、前記厚膜部から前記薄膜部に至る領域に形成されたソース電極及びドレイン電極とを有する相変化チャネルトランジスタの駆動方法であって、
前記バックゲート電極と前記ゲート電極との間に印加する電界により、前記チャネル層の前記相変化材料を、通常の絶縁体とトポロジカル絶縁体との間で変化させることにより、前記ソース電極と前記ドレイン電極との間に流れる電流のスイッチングを行う
ことを特徴とする相変化チャネルトランジスタの駆動方法。 - バックゲート電極と、前記バックゲート電極上に形成され、薄膜部と、前記薄膜部を挟むように配置された厚膜部と、前記薄膜部と前記厚膜部との境界部に配置された傾斜部とを有する絶縁膜と、前記絶縁膜上に形成され、電界の印加によりトポロジカル相転移が生じる相変化材料を含むチャネル層と、前記薄膜部上の前記チャネル層の上に形成されたゲート電極と、前記チャネル層上の、前記薄膜部から前記厚膜部に至る領域に形成されたソース電極及びドレイン電極とを有する相変化チャネルトランジスタの駆動方法であって、
前記バックゲート電極と前記ゲート電極との間に印加する電界により、前記チャネル層の前記相変化材料を、通常の絶縁体とトポロジカル絶縁体との間で変化させることにより、前記ソース電極と前記ドレイン電極との間に流れる電流のスイッチングを行う
ことを特徴とする相変化チャネルトランジスタの駆動方法。 - 請求項6又は7記載の相変化チャネルトランジスタの駆動方法において、
前記ソース電極及び前記ドレイン電極と前記バックゲート電極との間に印加する電界により、前記チャネル層への電界効果ドーピングを行う
ことを特徴とする相変化チャネルトランジスタの駆動方法。
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WO2022045568A1 (ko) * | 2020-08-25 | 2022-03-03 | 한양대학교 산학협력단 | 텔루륨계 반도체 소자의 제조방법, 이에 의해 제조된 텔루륨계 반도체 소자 및 박막 트랜지스터 |
JP2022517129A (ja) * | 2019-01-22 | 2022-03-04 | ノースロップ グラマン システムズ コーポレーション | 絶縁体と金属相変化材料を用いた半導体デバイス、及び半導体デバイスの製造方法 |
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JP6457803B2 (ja) * | 2014-12-08 | 2019-01-23 | 公立大学法人大阪府立大学 | 光伝導素子、テラヘルツ波発生装置、テラヘルツ波検出装置、テラヘルツ波発生方法およびテラヘルツ波検出方法 |
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CN111933793B (zh) * | 2020-08-25 | 2023-01-06 | 中国科学技术大学 | 拓扑场效应晶体管及其拓扑输运特性的调节方法 |
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JP2000164882A (ja) * | 1998-11-30 | 2000-06-16 | Nec Corp | 薄膜集積素子 |
JP2009122253A (ja) * | 2007-11-13 | 2009-06-04 | Seiko Epson Corp | 電気光学装置及び電子機器 |
US20120138887A1 (en) * | 2010-12-07 | 2012-06-07 | The Board Of Trustees Of The Leland Stanford Junior University | Electrical and Optical Devices Incorporating Topological Materials Including Topological Insulators |
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WO2022045568A1 (ko) * | 2020-08-25 | 2022-03-03 | 한양대학교 산학협력단 | 텔루륨계 반도체 소자의 제조방법, 이에 의해 제조된 텔루륨계 반도체 소자 및 박막 트랜지스터 |
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