JP2011181934A - デュアル・デプレションを示す高電子移動度トランジスタ及びその製造方法 - Google Patents
デュアル・デプレションを示す高電子移動度トランジスタ及びその製造方法 Download PDFInfo
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Abstract
【解決手段】互いに異なる極性を有する複数の半導体層20,22を含み、ソース電極28とドレイン電極32との間にデュアル・デプレション領域が存在し、該複数の半導体層は、上部物質層26、中間物質層22、下部物質層20を含み、中間物質層の極性は、上部物質層及び下部物質層の極性と異なる高電子移動度トランジスタである。
【選択図】図6
Description
20a 第1部分
20b 第2部分
22 第2物質層
24 第3物質層
26 第4物質層
36 第5物質層
50 第6物質層
52 第7物質層
54 第8物質層
28,29,43,58,68 ソース電極
29a 第1ソース電極
29b 第2ソース電極
30,40,60 ゲート電極
32,32a,42,62 ドレイン電極
40a 第1ゲート電極
40b 第2ゲート電極
A1 電荷的に中性である領域
A2 デュアル・デプレション領域
P1 分極
S1 第1電源
S2 第2電源
Claims (24)
- ソース電極、ゲート電極及びドレイン電極を含み、
互いに異なる分極率を有する複数の半導体層を含み、
前記ソース電極と前記ドレイン電極との間に、デュアル・デプレション領域が存在する高電子移動度トランジスタ。 - 前記複数の半導体層のうち分極率の小さい半導体層は、2DEG(2−dimensional electron gas)と2DHG(2−dimensional hole gas)とのうち少なくともいずれか一つを含むことを特徴とする請求項1に記載の高電子移動度トランジスタ。
- 前記複数の半導体層は、上部物質層、中間物質層、下部物質層を含み、前記中間物質層の分極率が、前記上部物質層及び前記下部物質層の分極率と異なることを特徴とする請求項2に記載の高電子移動度トランジスタ。
- 前記下部物質層が2DEGチャネルを、前記上部物質層が2DHGチャネルを含むことを特徴とする請求項3に記載の高電子移動度トランジスタ。
- 前記上部物質層が2DEGチャネルを、前記下部物質層が2DHGチャネルを含むことを特徴とする請求項3に記載の高電子移動度トランジスタ。
- 前記中間物質層の前記上部物質層との界面に2DEGチャネルを、前記中間物質層の下部物質層との界面に2DHGチャネルを含むことを特徴とする請求項3に記載の高電子移動度トランジスタ。
- 前記中間物質層の前記下部物質層との界面に2DEGチャネルを、前記中間物質層の前記上部物質層との界面に2DHGチャネルを含むことを特徴とする請求項3に記載の高電子移動度トランジスタ。
- 前記中間物質層は、単一物質層あるいは複数物質層であることを特徴とする請求項3に記載の高電子移動度トランジスタ。
- 前記複数の半導体層は、上部物質層、中間物質層及び下部物質層を含み、前記ゲート電極と前記ドレイン電極は、前記上部物質層上に存在して互いに離隔されていることを特徴とする請求項1に記載の高電子移動度トランジスタ。
- 前記ソース電極は、前記上部物質層上に存在することを特徴とする請求項9に記載の高電子移動度トランジスタ。
- 前記上部物質層は、2DHGチャネルを含み、前記ソース電極は前記2DHGチャネルと直接接触し、前記上部物質層の側面と直接接触していることを特徴とする請求項10に記載の高電子移動度トランジスタ。
- 前記上部物質層と前記ゲート電極との間に、絶縁層をさらに含むことを特徴とする請求項9に記載の高電子移動度トランジスタ。
- 下部物質層上に形成された中間物質層と、
前記中間物質層上に存在する上部物質層及びドレイン電極と、
前記中間物質層と前記上部物質層とのうち少なくともいずれか1層の上に形成されたゲート電極と、
前記中間物質層と前記上部物質層とのうち少なくともいずれか1層の上に形成されたソース電極と、を含み、
前記中間物質層の極性は、前記上部物質層及び下部物質層の極性と異なり、
前記ゲート電極と前記ドレイン電極との間に、デュアル・デプレション領域が存在する高電子移動度トランジスタ。 - 前記上部物質層と前記ドレイン電極は、前記中間物質層と接触し、前記ソース電極は、前記ゲート電極と離隔され、前記中間物質層上または前記上部物質層上に配されたことを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記ゲート電極と前記ソース電極は、前記上部物質層上に備わったことを特徴とする請求項14に記載の高電子移動度トランジスタ。
- 前記ゲート電極と前記ソース電極は、前記中間物質層上に備わっており、前記ゲート電極の側面は、前記上部物質層と接触したことを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記ゲート電極と前記上部物質層は、オーミック接触され、前記ゲート電極と前記中間物質層は、ショットキー接触したことを特徴とする請求項16に記載の高電子移動度トランジスタ。
- 前記ゲート電極は、第1ゲート電極及び第2ゲート電極を含むことを特徴とする請求項16に記載の高電子移動度トランジスタ。
- 前記第1ゲート電極は、前記上部物質層とオーミック接触され、前記第2ゲート電極は、前記第1ゲート電極及び前記上部物質層とはオーミック接触し、前記中間物質層とはショットキー接触をなすことを特徴とする請求項18に記載の高電子移動度トランジスタ。
- 前記ソース及びドレイン電極のうち少なくともいずれか一つは、前記下部物質層の側面と接触したことを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記中間物質層及び前記上部物質層のうち少なくともいずれか1層の層と、ゲート電極との間に絶縁層が含まれたことを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記上部物質層と前記ドレイン電極は、前記中間物質層上から離隔されていることを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記ソース電極は、前記上部物質層上に備わったことを特徴とする請求項13に記載の高電子移動度トランジスタ。
- 前記上部物質層は、2DHGチャネルを含み、前記ソース電極は前記2DHGチャネルと直接接触し、前記上部物質層の側面と接触することを特徴とする請求項23に記載の高電子移動度トランジスタ。
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KR101774933B1 (ko) | 2017-09-06 |
EP2363890A3 (en) | 2013-04-24 |
US20110215378A1 (en) | 2011-09-08 |
CN102194867B (zh) | 2016-02-10 |
EP2363890B1 (en) | 2020-08-19 |
CN102194867A (zh) | 2011-09-21 |
EP2363890A2 (en) | 2011-09-07 |
KR20110099546A (ko) | 2011-09-08 |
US9660048B2 (en) | 2017-05-23 |
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