JP4810072B2 - 窒素化合物含有半導体装置 - Google Patents
窒素化合物含有半導体装置 Download PDFInfo
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- JP4810072B2 JP4810072B2 JP2004177151A JP2004177151A JP4810072B2 JP 4810072 B2 JP4810072 B2 JP 4810072B2 JP 2004177151 A JP2004177151 A JP 2004177151A JP 2004177151 A JP2004177151 A JP 2004177151A JP 4810072 B2 JP4810072 B2 JP 4810072B2
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- gallium nitride
- aluminum gallium
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- 239000004065 semiconductor Substances 0.000 title claims description 130
- 229910017464 nitrogen compound Inorganic materials 0.000 title claims description 96
- 150000002830 nitrogen compounds Chemical class 0.000 title claims description 96
- 229910002601 GaN Inorganic materials 0.000 claims description 214
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 claims description 137
- 239000000758 substrate Substances 0.000 claims description 95
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 66
- 229910052710 silicon Inorganic materials 0.000 claims description 66
- 239000010703 silicon Substances 0.000 claims description 66
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000004888 barrier function Effects 0.000 claims description 15
- 150000004767 nitrides Chemical class 0.000 claims description 5
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 91
- 230000004048 modification Effects 0.000 description 21
- 238000012986 modification Methods 0.000 description 21
- 230000015556 catabolic process Effects 0.000 description 20
- 238000002955 isolation Methods 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000013078 crystal Substances 0.000 description 11
- 230000005669 field effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000008119 colloidal silica Substances 0.000 description 8
- 230000005684 electric field Effects 0.000 description 8
- 238000002161 passivation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052594 sapphire Inorganic materials 0.000 description 6
- 239000010980 sapphire Substances 0.000 description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 5
- 229910052733 gallium Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 241001676573 Minium Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002109 crystal growth method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000005533 two-dimensional electron gas Effects 0.000 description 1
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Description
前記シリコン基板上に島状に形成されたチャネル層としての第1の窒化アルミニウムガリウム(AlxGa1−xN(0≦x≦1))層と、
前記第1の窒化アルミニウムガリウム層上に形成された第1導電型又はi型のバリア層としての第2の窒化アルミニウムガリウム(AlyGa1−yN(0≦y≦1,x<y))層と、
前記第2の窒化アルミニウムガリウム層上に形成されたゲート電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続されたドレイン電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続され、前記ゲート電極及び前記ドレイン電極を包囲するように前記第2の窒化アルミニウムガリウム層の周縁部側でかつ周縁部の端部よりも内側に形成された環状のソース電極と、を備え、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により一つの半導体素子が形成され、
前記ソース電極は、前記シリコン基板に電気的に接続されていることを特徴とする窒素化合物含有半導体装置が提供される。
また、本発明の一態様では、シリコン基板と、
前記シリコン基板上に島状に形成されたチャネル層としての第1の窒化アルミニウムガリウム(AlxGa1−xN(0≦x≦1))層と、
前記第1の窒化アルミニウムガリウム層上に形成された第1導電型又はi型のバリア層としての第2の窒化アルミニウムガリウム(AlyGa1−yN(0≦y≦1,x<y))層と、
前記第2の窒化アルミニウムガリウム層上に形成されたゲート電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続されたドレイン電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続され、前記ゲート電極及び前記ドレイン電極を包囲するように前記第2の窒化アルミニウムガリウム層の周縁部側でかつ周縁部の端部よりも内側に形成された環状のソース電極と、を備え、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により一つの半導体素子が形成され、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により形成される前記半導体素子が複数個並列接続され、
前記ソース電極は、前記シリコン基板に電気的に接続されていることを特徴とする窒素化合物含有半導体装置が提供される。
2 窒化ガリウム(GaN)層(チャネル層)
3 窒化アルミニウムガリウム(AlGaN)層(バリア層)
4 ソース電極
5 ゲート電極
6 ドレイン電極
7 ソース端子
8 ドレイン端子
9 ゲート端子
10 パッケージ
11 ボンディングワイヤ
12 半導体チップ
13 絶縁膜
14 フィールドプレート電極
15 第2のフィールドプレート電極
16 アノード電極
17 カソード電極
18 p型窒化ガリウム(GaN)層
19 パッシベーション膜
20 コロイダルシリカ
21 絶縁膜
23 絶縁膜
24 ソース電極配線
26 ドレイン電極配線
Claims (3)
- シリコン基板と、
前記シリコン基板上に島状に形成されたチャネル層としての第1の窒化アルミニウムガリウム(AlxGa1−xN(0≦x≦1))層と、
前記第1の窒化アルミニウムガリウム層上に形成された第1導電型又はi型のバリア層としての第2の窒化アルミニウムガリウム(AlyGa1−yN(0≦y≦1,x<y))層と、
前記第2の窒化アルミニウムガリウム層上に形成されたゲート電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続されたドレイン電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続され、前記ゲート電極及び前記ドレイン電極を包囲するように前記第2の窒化アルミニウムガリウム層の周縁部側でかつ周縁部の端部よりも内側に形成された環状のソース電極と、を備え、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により一つの半導体素子が形成され、
前記ソース電極は、前記シリコン基板に電気的に接続されていることを特徴とする窒素化合物含有半導体装置。 - シリコン基板と、
前記シリコン基板上に島状に形成されたチャネル層としての第1の窒化アルミニウムガリウム(AlxGa1−xN(0≦x≦1))層と、
前記第1の窒化アルミニウムガリウム層上に形成された第1導電型又はi型のバリア層としての第2の窒化アルミニウムガリウム(AlyGa1−yN(0≦y≦1,x<y))層と、
前記第2の窒化アルミニウムガリウム層上に形成されたゲート電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続されたドレイン電極と、
前記第2の窒化アルミニウムガリウム層に電気的に接続され、前記ゲート電極及び前記ドレイン電極を包囲するように前記第2の窒化アルミニウムガリウム層の周縁部側でかつ周縁部の端部よりも内側に形成された環状のソース電極と、を備え、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により一つの半導体素子が形成され、
島状の前記第1の窒化アルミニウムガリウム層及び前記第2の窒化アルミニウムガリウム層により形成される前記半導体素子が複数個並列接続され、
前記ソース電極は、前記シリコン基板に電気的に接続されていることを特徴とする窒素化合物含有半導体装置。 - 前記半導体素子は、
前記ゲート電極上に形成された絶縁膜と、
前記ゲート電極を被覆するように前記絶縁膜上に形成され、前記ソース電極に電気的に接続されたフィールドプレート電極と、をさらに備えることを特徴とする請求項1または2に記載の窒素化合物含有半導体装置。
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