JP2011193020A5 - - Google Patents

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JP2011193020A5
JP2011193020A5 JP2011120724A JP2011120724A JP2011193020A5 JP 2011193020 A5 JP2011193020 A5 JP 2011193020A5 JP 2011120724 A JP2011120724 A JP 2011120724A JP 2011120724 A JP2011120724 A JP 2011120724A JP 2011193020 A5 JP2011193020 A5 JP 2011193020A5
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silicon carbide
layer
semiconductor device
power semiconductor
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JP5687956B2 (ja
JP2011193020A (ja
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Claims (11)

  1. 第1の伝導型を有する第1の炭化珪素層と、
    前記第1の炭化珪素層の中にあって前記第1の伝導型を有するソース領域であって、前記ソース領域は、前記第1の炭化珪素層のキャリア濃度よりも高いキャリア濃度を有し、前記第1の炭化珪素層の第1の表面まで延在し、前記第1の伝導型のドーパントと、前記第1の伝導型とは反対の第2の伝導型のドーパントとを有する前記ソース領域と、
    前記ソース領域の底部に隣接し、前記ソース領域の深さよりも深い前記第1の炭化珪素層の中の深さで、前記第1の炭化珪素層の中にある第2の伝導型の炭化珪素の埋込み領域と、
    前記ソース領域の第1の側の前記第1の炭化珪素層の中にあって、前記第1の炭化珪素層の前記第1の表面に向かって延在している前記第2の伝導型の炭化珪素のウェル領域と、
    前記ソース領域の前記第1の側に対向する前記ソース領域の第2の側にあって、前記第1の炭化珪素層の前記第1の表面まで延在している前記第2の伝導型の炭化珪素のプラグ領域と、
    を備えることを特徴とする炭化珪素パワー半導体デバイス。
  2. 前記第1の炭化珪素層、前記ウェル領域、および前記ソース領域の上にあるゲート酸化膜と、
    前記ゲート酸化膜の上のゲート接点と、
    前記プラグ領域および前記ソース領域の上のソース接点と、
    前記第1の炭化珪素層の前記第1の表面に対向する前記第1の炭化珪素層の上のドレイン接点と、
    をさらに備えることを特徴とする請求項1に記載の炭化珪素パワー半導体デバイス。
  3. 前記第1の炭化珪素層の前記第1の面の上で、前記ゲート酸化膜と前記第1の炭化珪素層との間にあり前記第1の炭化珪素層の前記第1の面の上に第1の炭化珪素エピタキシャル層をさらに備えることを特徴とする請求項2に記載の炭化珪素パワー半導体デバイス。
  4. 前記第1の炭化珪素層の中にあって前記ソース領域から延在する第1の伝導型炭化珪素の閾値調整領域をさらに備え、前記閾値調整領域は、前記ウェル領域と前記第1の炭化珪素層の前記第1の面との間に配置されることを特徴とする請求項3に記載の炭化珪素パワー半導体デバイス。
  5. 前記閾値調整領域は、前記第1の炭化珪素層の中へ0.01μmから0.5μmの深さまで延在し、10 15 から10 19 cm −3 のキャリア濃度を有し、さらに前記第1の炭化珪素層は、6から200μmの厚みを有し、1×10 14 から5×10 16 cm −3 のキャリア濃度を有することを特徴とする請求項4に記載の炭化珪素パワー半導体デバイス。
  6. 前記第1の炭化珪素層は、6μmから200μmの厚みと、1×10 14 から5×10 16 cm −3 のキャリア濃度とを有することを特徴とする請求項5に記載の炭化珪素パワー半導体デバイス。
  7. 前記第1の伝導型はn型であり、前記第2の伝導型はp型であることを特徴とする請求項2に記載の炭化珪素パワー半導体デバイス。
  8. 前記第1の炭化珪素層の中の第1の伝導型炭化珪素の閾値調整領域をさらに備え、該閾値調整領域は前記ソース領域と前記ウェル領域の共通平面の上を延在し、前記ウェル領域と前記第1の炭化珪素層の前記第1の面との間に配置されていることを特徴とする請求項2に記載の炭化珪素パワー半導体デバイス
  9. 前記閾値調整領域は、前記炭化珪素の第1の層の中へ0.01μmから0.5μmの深さまで延在し、10 15 から10 19 cm −3 のキャリア濃度を有することを特徴とする請求項8に記載の炭化珪素パワー半導体デバイス。
  10. 前記炭化珪素の第1の層と前記ドレイン接点との間に配置された前記第1の伝導型の炭化珪素の第2の層をさらに備え、前記炭化珪素の第2の層は、前記炭化珪素の第1の層よりも高いキャリア濃度を有することを特徴とする請求項2に記載の炭化珪素パワー半導体デバイス。
  11. 前記炭化珪素のウェル領域は前記炭化珪素プラグ領域と接していないことを特徴とする請求項2に記載の炭化珪素パワー半導体デバイス。
JP2011120724A 2003-04-24 2011-05-30 自己整合ソースおよびウェル領域を有する炭化珪素パワーデバイスならびにその製造方法 Expired - Lifetime JP5687956B2 (ja)

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US10/422,130 2003-04-24
US10/422,130 US7074643B2 (en) 2003-04-24 2003-04-24 Silicon carbide power devices with self-aligned source and well regions and methods of fabricating same

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JP2011120724A Expired - Lifetime JP5687956B2 (ja) 2003-04-24 2011-05-30 自己整合ソースおよびウェル領域を有する炭化珪素パワーデバイスならびにその製造方法

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EP (2) EP2463894B1 (ja)
JP (2) JP5265111B2 (ja)
KR (2) KR101126836B1 (ja)
CN (1) CN100472737C (ja)
CA (1) CA2522820A1 (ja)
TW (1) TWI340994B (ja)
WO (1) WO2004097926A1 (ja)

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