JP6941144B2 - 車両用整流装置、整流器、発電装置及びパワートレイン - Google Patents
車両用整流装置、整流器、発電装置及びパワートレイン Download PDFInfo
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- JP6941144B2 JP6941144B2 JP2019165284A JP2019165284A JP6941144B2 JP 6941144 B2 JP6941144 B2 JP 6941144B2 JP 2019165284 A JP2019165284 A JP 2019165284A JP 2019165284 A JP2019165284 A JP 2019165284A JP 6941144 B2 JP6941144 B2 JP 6941144B2
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L2924/11—Device type
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Description
11 電流経路
12 基板
12a 基板表面
12b 基板裏面
14 エピタキシャル層
14t エピタキシャル層の厚さ
15,19 垂直方向導電性チャネル
15w 垂直方向導電性チャネルの幅
16 本体領域
17 チャネル
18 シリサイド層
18t シリサイド層の厚さ
20 ゲート構造
22 ゲート誘電体層
24 ゲート
26 相互接続層
28 金属層
30a,30b Enhanced Field Effect Diode(EFESD)
31 横方向導電性チャネル
32 横方向導電性シリサイド構造
34 電界効果接合構造
D1 第一距離
D2 第二距離
P ピッチ
100 整流
102 基材
102a 収容空間
102b 周囲
102c 底面
102d ロック構造
104 リード構造
104a ベース部
104b リード
104c 底面
106 整流器チップ
106a 整流器チップの上面
106b 整流器チップの底面
108 封入剤
110a,110b 導電性接着層
Claims (18)
- 車両用交流発電機のための整流装置であって、
前記整流装置は、交流発電機において整流するための整流素子を備え、
前記整流素子は、強化された電界効果半導体ダイオード(Enhanced Field Effect Semiconductor Diode:EFESD)を有し、
本体領域と、
前記本体領域に導通する横方向導電性シリサイド構造を含むシリサイド層と、
電界効果接合構造と、
前記横方向導電性シリサイド構造と前記電界効果接合構造とを電気的に接続する相互接続層と、
基板と、
前記基板の下に配置され、前記EFESDのカソードとして機能する金属層と、
前記本体領域の一部を覆うゲート誘電体層とを備え、
チャネルは、前記横方向導電性シリサイド構造の側面と、前記本体領域の側面と、前記ゲート誘電体層の底面とによって画定される領域で、前記チャネルの長さは、0.5μm未満であり、
前記横方向導電性シリサイド構造、前記電界効果接合構造及び前記相互接続層は等しい電位であり、前記相互接続層は、前記EFESDのアノードとして機能し、
前記横方向導電性シリサイド構造と前記電界効果接合構造は並んで集積され、導電が生じるときに前記横方向導電性シリサイド構造が単極性のキャリア源を提供する整流装置。 - 前記EFESDは、
互いに反対側の前面と背面とを有する前記基板と、
前記基板の前面に配置されたエピタキシャル層と、
前記エピタキシャル層に配置された前記本体領域と、
前記エピタキシャル層上に配置されたゲートと、
前記ゲートと前記エピタキシャル層との間に配置された前記ゲート誘電体層と、
前記ゲートの上面及び側壁を覆い、前記相互接続層と前記本体領域との間に延在する前記シリサイド層とを備え、
前記基板と前記エピタキシャル層とが同じ導電型を有し、前記本体領域と前記エピタキシャル層とが異なる導電型を有し、
隣接する二つのゲート間に垂直方向導電性チャネルが含まれ、前記垂直方向導電性チャネルの位置が前記本体領域の位置に対応する請求項1に記載の整流装置。 - 前記EFESDの電流経路が前記アノードから前記シリサイド層、前記本体領域、前記エピタキシャル層及び前記基板を通って前記カソードに至るものであって、
前記電流経路が前記垂直方向導電性チャネルから横方向導電性チャネルに曲げられ、前記横方向導電性チャネルは、前記ゲートに順方向バイアスが印加されたときに前記ゲート誘電体層の下に生成される反転層からもたらされる請求項2に記載の整流装置。 - 順方向バイアスの場合、前記反転層は、前記チャネル内に形成され、前記反転層はエネルギーバンドを曲げ、障壁高さを低くして、順方向電圧を低減することができる請求項3に記載の整流装置。
- 前記基板がSi、SiC、GaN、又はそれらの組み合わせを含み、前記ゲートが多結晶シリコンを含み、前記ゲート誘電体層が、SiO2、HfO2、BaTiO3、ZrO2、SiON、又はそれらの組み合わせを含む請求項2〜4のいずれか一項に記載の整流装置。
- 前記シリサイド層が、PtSi、TiSi、NiSi、MoSi、WSi、CoSi、又はそれらの組み合わせを含む請求項2〜5のいずれか一項に記載の整流装置。
- 前記相互接続層が、前記シリサイド層をさらに貫通して前記本体領域に接触する請求項2〜6のいずれか一項に記載の整流装置。
- 前記ゲート誘電体層の厚さが減少すると閾値電圧が減少し、
前記本体領域のドーピング濃度が減少するとチャネルのターンオン電圧が減少し、
前記本体領域の面積が減少すると前記EFESDの電流集中効果が減少してセル密度が増加する請求項2〜7のいずれか一項に記載の整流装置。 - 前記整流装置は、500A/cm2で前記EFESDに電流が流れるとき、0.6Vの導通電圧を有し、
前記EFESDの逆方向電流密度が−18Vの逆方向電圧で50μA/cm2であり、
前記EFESDの順方向電流密度が0.6Vの順方向電圧で500A/cm2である請求項1〜8のいずれか一項に記載の整流装置。 - 前記シリサイド層は前記本体領域と自己整合され、より多くのセルが単位領域に集積化される請求項1〜9のいずれか一項に記載の整流装置。
- 前記EFESDの前記本体領域のドーピング濃度がスーパーバリア整流器(SBR)の本体領域のドーピング濃度に等しいとき、前記EFESDのリーク電流が、固定逆電圧における前記スーパーバリア整流器(SBR)のリーク電流未満である請求項1〜10のいずれか一項に記載の整流装置。
- 前記横方向導電性シリサイド構造の前記電界効果接合構造への接続は、モノリシックに集積される、請求項1〜11のいずれか一項に記載の整流装置。
- 車両用の整流器であって、
収容空間を有するベースと、収容空間上に配置されたリード構造と、前記ベースと前記リード構造との間に配置され、前記リード構造と前記ベースとに電気的に接触する整流器チップであって、前記整流器チップは、請求項1から請求項12のいずれか1項に記載のEFESDを備える、整流器チップと、を備える車両用整流器、であって、整流器チップが前記EFESDを備える請求項1〜請求項12のいずれか一項に記載の整流器。 - 前記ベースが、Cu、Al、又はそれらの合金を含む、請求項13に記載の整流器。
- 車両用の発電装置であって、
請求項1から12のいずれか一項に記載のEFESDを備え、発電機によって供給される交流電圧を整流するための整流器を備える発電装置。 - 巻線モータ、永久磁石モータ、又はそれらの組み合わせを備える請求項15に記載の発電装置。
- 車両用のパワートレインであって、
請求項1〜12のいずれか一項に記載のEFESDを備え、発電機によって供給される交流電圧を整流するための整流器を有する発電装置を備えるパワートレイン。 - アイドルストップスタート(ISS)システム、ベルト駆動スタータ発電機(BSG)システム、統合スタータ発電機(ISG)システム、又はそれらの組み合わせを備える請求項17に記載のパワートレイン。
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