JP2008533717A - ゲート−ソースフィールドプレートを含むワイドバンドギャップトランジスタ - Google Patents
ゲート−ソースフィールドプレートを含むワイドバンドギャップトランジスタ Download PDFInfo
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
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- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
- H01L29/7786—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT
- H01L29/7787—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT with wide bandgap charge-carrier supplying layer, e.g. direct single heterostructure MODFET
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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Abstract
Description
Claims (24)
- チャネル層を有する活性領域と、
前記活性領域と接触したソースおよびドレイン電極と、
前記ソース電極と前記ドレイン電極との間にあって、前記活性領域と接触したゲートと、
前記ゲートと前記ドレイン電極との間および前記ゲートと前記ソース電極との間の前記活性領域の表面の少なくとも一部分上にあるスペーサ層と、
前記スペーサ層上にあって、前記活性領域の上の前記スペーサ上を前記ドレイン電極に向かって延び、前記活性領域の上の前記スペーサ層上を前記ソース電極に向かって延びるフィールドプレートと、
前記フィールドプレートを前記ソース電極または前記ゲートに電気的に接続する少なくとも1つの導電性経路と
を含むことを特徴とするトランジスタ。 - 前記フィールドプレートは、前記スペーサ層上を前記ゲートの縁から前記ドレイン電極に向かって距離Lfdだけ延びることを特徴とする請求項1に記載のトランジスタ。
- 前記フィールドプレートは、前記スペーサ層上を前記ゲートの縁から前記ソース電極に向かって距離Lfsだけ延びることを特徴とする請求項1に記載のトランジスタ。
- 前記スペーサ層は前記ゲートを覆い、前記フィールドプレートは、前記ゲートと部分的に重なり合い、前記スペーサ上を前記ドレイン電極に向かって延び、前記スペーサ層上を前記ソース電極に向かって延びることを特徴とする請求項1に記載のトランジスタ。
- 前記少なくとも1つの導電性経路は、前記フィールドプレートと前記ソース電極との間を通り、前記経路はそれぞれ前記活性領域の外側を通り、前記フィールドプレートに前記ソース電極との電気的接続を提供することを特徴とする請求項1に記載のトランジスタ。
- 前記少なくとも1つの導電性経路は、前記フィールドプレートと前記ソース電極との間を通り、前記スペーサ層の上を通ることを特徴とする請求項1に記載のトランジスタ。
- 前記少なくとも1つの導電性経路は、前記フィールドプレートと前記ゲートとの間を通り、前記経路はそれぞれ前記活性領域の外側を通り、前記フィールドプレートに前記ゲートとの電気的接続を提供することを特徴とする請求項1に記載のトランジスタ。
- 前記少なくとも1つの導電性経路は、前記フィールドプレートと前記ゲートとの間を、前記スペーサ層を貫いて通る導電性バイアを含むことを特徴とする請求項1に記載のトランジスタ。
- 前記スペーサ層は、前記ゲートから前記ドレイン電極まで、および前記ゲートから前記ソース電極までの前記活性領域の表面の少なくとも一部分を覆い、前記フィールドプレートは、前記ゲートと一体に形成され、前記スペーサ層上を、前記ソース電極および前記ドレイン電極に向かって延びることを特徴とする請求項1に記載のトランジスタ。
- 複数の前記活性領域は、基板上に形成されることを特徴とする請求項1に記載のトランジスタ。
- 複数の前記活性領域は、III族窒化物ベースの半導体材料から形成されることを特徴とする請求項1に記載のトランジスタ。
- 前記スペーサ層は、1つの誘電材料または複数の誘電材料層を含むことを特徴とする請求項1に記載のトランジスタ。
- 前記ゲートは、前記活性領域の中に少なくとも部分的に落ち込んでいることを特徴とする請求項1に記載のトランジスタ。
- 前記フィールドプレートは、前記ゲートの前記ドレイン側および前記ゲートの前記ソース側の前記HEMTのピーク動作電場を低減させることを特徴とする請求項1に記載のトランジスタ。
- 前記ピーク動作電場の低減は、前記トランジスタの破壊電圧を増大させることを特徴とする請求項14に記載のトランジスタ。
- 前記ピーク動作電場の低減は、前記HEMTのトラッピングを低減させることを特徴とする請求項14に記載のトランジスタ。
- 前記ピーク動作電場の低減は、前記トランジスタの漏れ電流を低減させることを特徴とする請求項14に記載のトランジスタ。
- 高電子移動度トランジスタ(HEMT)を含むことを特徴とする請求項1に記載のトランジスタ。
- 電界効果トランジスタを含むことを特徴とする請求項1に記載のトランジスタ。
- 1つまたは複数のスペーサ層/フィールドプレート対をさらに含み、前記対のそれぞれのスペーサ層は、その対のフィールドプレートとその下のフィールドプレートとの間の電気的分離を提供し、前記対のそれぞれのフィールドプレートは、前記ソース電極または前記ゲートに電気的に接続されることを特徴とする請求項1に記載のトランジスタ。
- 前記フィールドプレートは、別個のソースおよびドレインフィールドプレートを含み、前記ソースフィールドプレートは、前記スペーサ層上を前記ソース電極に向かって延び、前記ドレインフィールドプレートは、前記スペーサ層上を前記ドレイン電極に向かって延び、前記ソースおよびドレインフィールドプレートは、前記ソース電極または前記ゲートに電気的に接続されることを特徴とする請求項1に記載のトランジスタ。
- 前記フィールドプレートは、別個のソースおよびドレインフィールドプレートを含み、前記ソースフィールドプレートは、前記スペーサ層上を前記ソース電極に向かって延び、前記ドレインフィールドプレートは、前記スペーサ層上を前記ドレイン電極に向かって延び、前記ソースフィールドプレートは、前記ソース電極と前記ゲートのうちの一方に電気的に接続され、前記ドレインフィールドプレートは、前記ソース電極と前記ゲートのうちのもう一方に接続されることを特徴とする請求項1に記載のトランジスタ。
- 基板上に連続して配置されたバッファ層およびバリア層と、
前記バッファ層と前記バリア層との間のヘテロ界面にある2次元電子ガス(2DEG)チャネル層と、
ともに前記2DEGチャネル層と接触したソースおよびドレイン電極と、
前記ソース電極と前記ドレイン電極との間の前記バリア層上にあるゲートと、
前記ゲートと前記ドレイン電極との間および前記ゲートと前記ソース電極との間の前記バリア層の表面の少なくとも一部分上にあるスペーサ層と、
前記スペーサ層上にあって、前記バリア層の上の前記スペーサ上を前記ドレイン電極に向かって延び、前記バリア層の上の前記スペーサ層上を前記ソース電極に向かって延びるフィールドプレートと、
前記フィールドプレートを前記ソース電極または前記ゲートに電気的に接続する少なくとも1つの導電性経路と
を含むことを特徴とする高電子移動度トランジスタ(HEMT)。 - 基板上のバッファ層と、
前記バッファ層上のチャネル層であって、前記バッファ層が、該チャネル層と前記基板との間に挟まれたチャネル層と、
前記チャネル層と電気的に接触したソース電極と、
前記チャネル層と電気的に接触したドレイン電極と、
前記ソース電極と前記ドレイン電極との間で前記チャネル層と電気的に接触したゲートと、
前記ゲートと前記ドレイン電極との間および前記ゲートと前記ソース電極との間の前記チャネル層の表面の少なくとも一部分上にあるスペーサ層と、
前記スペーサ層上にあって、前記チャネル層の上の前記スペーサ上を前記ドレイン電極に向かって延び、前記チャネル層の上の前記スペーサ層上を前記ソース電極に向かって延びるフィールドプレートと、
前記フィールドプレートを前記ソース電極または前記ゲートに電気的に接続する少なくとも1つの導電性経路と
を含むことを特徴とする金属半導体電界効果トランジスタ(MESFET)。
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US11/078,265 | 2005-03-11 | ||
US11/078,265 US11791385B2 (en) | 2005-03-11 | 2005-03-11 | Wide bandgap transistors with gate-source field plates |
PCT/US2006/001058 WO2006098801A1 (en) | 2005-03-11 | 2006-01-11 | Wide bandgap transistors with gate-source field plates |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008131031A (ja) * | 2006-11-21 | 2008-06-05 | Cree Inc | 高電圧GaNトランジスタ |
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Cited By (18)
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JP2008131031A (ja) * | 2006-11-21 | 2008-06-05 | Cree Inc | 高電圧GaNトランジスタ |
JP2008244433A (ja) * | 2007-03-23 | 2008-10-09 | Cree Inc | 高温動作可能窒化ガリウムトランジスタ |
JP2009055042A (ja) * | 2007-08-28 | 2009-03-12 | Cree Inc | 水素を含まないスパッタリングされた窒化物を有するワイドバンドギャップベースの半導体デバイスの不動態化 |
JP2013168663A (ja) * | 2007-08-28 | 2013-08-29 | Cree Inc | 水素を含まないスパッタリングされた窒化物を有するワイドバンドギャップベースの半導体デバイスの不動態化 |
JP2010199241A (ja) * | 2009-02-24 | 2010-09-09 | Fujitsu Ltd | 半導体装置 |
JP2012524403A (ja) * | 2009-04-14 | 2012-10-11 | トライクイント・セミコンダクター・インコーポレイテッド | 複数のフィールドプレートを有する電界効果トランジスタ |
US8754496B2 (en) | 2009-04-14 | 2014-06-17 | Triquint Semiconductor, Inc. | Field effect transistor having a plurality of field plates |
JP2011204993A (ja) * | 2010-03-26 | 2011-10-13 | Panasonic Corp | 双方向スイッチ素子及びそれを用いた双方向スイッチ回路 |
US8829999B2 (en) | 2010-05-20 | 2014-09-09 | Cree, Inc. | Low noise amplifiers including group III nitride based high electron mobility transistors |
JP2011244459A (ja) * | 2010-05-20 | 2011-12-01 | Cree Inc | Iii族窒化物系高電子移動度トランジスタを含む低雑音増幅器 |
JP2012018972A (ja) * | 2010-07-06 | 2012-01-26 | Sanken Electric Co Ltd | 半導体装置 |
KR101264528B1 (ko) | 2010-11-02 | 2013-05-14 | 후지쯔 가부시끼가이샤 | 반도체 장치 및 그 제조 방법 |
US9548383B2 (en) | 2013-08-27 | 2017-01-17 | Fujitsu Limited | HEMT with a metal film between the gate electrode and the drain electrode |
JP2015195288A (ja) * | 2014-03-31 | 2015-11-05 | 住友電工デバイス・イノベーション株式会社 | 半導体装置及び半導体装置の製造方法 |
KR20180063837A (ko) * | 2016-12-02 | 2018-06-12 | 비쉐이-실리코닉스 | 상호 접속부가 매립된 고 전자 이동도 트랜지스터 |
US10665711B2 (en) | 2016-12-02 | 2020-05-26 | Vishay SIliconix, LLC | High-electron-mobility transistor with buried interconnect |
KR102197365B1 (ko) * | 2016-12-02 | 2020-12-31 | 비쉐이-실리코닉스 | 상호 접속부가 매립된 고 전자 이동도 트랜지스터 |
JP2017208556A (ja) * | 2017-06-27 | 2017-11-24 | 株式会社東芝 | 半導体装置 |
Also Published As
Publication number | Publication date |
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TW200644241A (en) | 2006-12-16 |
JP6124511B2 (ja) | 2017-05-10 |
TWI553859B (zh) | 2016-10-11 |
JP5519930B2 (ja) | 2014-06-11 |
WO2006098801A1 (en) | 2006-09-21 |
TWI484630B (zh) | 2015-05-11 |
EP1866968B1 (en) | 2020-05-13 |
US11791385B2 (en) | 2023-10-17 |
EP1866968A1 (en) | 2007-12-19 |
TW201320333A (zh) | 2013-05-16 |
US20060202272A1 (en) | 2006-09-14 |
JP2012178595A (ja) | 2012-09-13 |
US20230420526A1 (en) | 2023-12-28 |
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