JP5202312B2 - 第iii族窒化物エンハンスメント型デバイス - Google Patents
第iii族窒化物エンハンスメント型デバイス Download PDFInfo
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- JP5202312B2 JP5202312B2 JP2008519736A JP2008519736A JP5202312B2 JP 5202312 B2 JP5202312 B2 JP 5202312B2 JP 2008519736 A JP2008519736 A JP 2008519736A JP 2008519736 A JP2008519736 A JP 2008519736A JP 5202312 B2 JP5202312 B2 JP 5202312B2
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- 150000004767 nitrides Chemical class 0.000 title claims description 83
- 239000004065 semiconductor Substances 0.000 claims description 100
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 52
- 230000004888 barrier function Effects 0.000 claims description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- 229910002704 AlGaN Inorganic materials 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 230000005533 two-dimensional electron gas Effects 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- -1 hydrogen ions Chemical class 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910002601 GaN Inorganic materials 0.000 description 29
- 239000000463 material Substances 0.000 description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66446—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET]
- H01L29/66462—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET] with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
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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
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- H01L29/7783—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 confinement of carriers by at least two heterojunctions, e.g. DHHEMT, quantum well HEMT, DHMODFET using III-V semiconductor material
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Description
11 遷移層
12 接合層
14 第1の第III族窒化物バッファ本体
16 第1の第III族窒化物半導体本体
18 第2の第III族窒化物半導体本体
19 ヘテロ接合
20 第1電源電極
21 ヘテロ接合
22 第2電源電極
24 ゲート
26 ゲートバリア
30 バッファ材料
32 水素原子
34 注入領域
36 シリコンウエーハ
37 上部分
38 2酸化シリコン接合層
39 窒素極性GaN本体
40 GaN層
42 ゲートバリア材料
44 第3の第III族窒化物半導体本体
46 第4の第III族窒化物半導体本体
48 リセス
50 マスク
52 SiO2
Claims (19)
- 接合層を介して窒素極性第III族窒化物バッファ層の表面に接合された基板と、
1つのバンドギャップを有する第1の第III族窒化物半導体本体、および前記第1の第III族窒化物半導体本体上に前記1つのバンドギャップより小さい別のバンドギャップを有する第2の第III族窒化物半導体本体を含む2次元電子ガスを有する窒素極性能動ヘテロ接合と、
少なくとも前記第2の第III族窒化物半導体本体に結合されているゲートと、
前記ゲートにバイアスをかけない場合に伝導バンドをフェルミ準位より上に引き上げて前記2次元電子ガスを中断するために、前記ゲート配置と前記第2の第III族窒化物半導体本体との間に設けられ、前記第2の第III族窒化物半導体本体より大きいバンドギャップを有するゲートバリアと、
少なくとも前記第2の第III族窒化物半導体本体に結合されている第1電源電極および第2電源電極
とを備える電力半導体デバイス。 - 前記接合層は、二酸化シリコンからなる、請求項1に記載の電力半導体デバイス。
- 前記基板はシリコンから成る、請求項2に記載の電力半導体デバイス。
- 前記バッファ層は、GaNから成る請求項3に記載の電力半導体デバイス。
- 前記ゲートバリアは、InAlGaNの合金から成る請求項1に記載の電力半導体デバイス。
- 前記ゲートバリアは、AlGaNから成る請求項1に記載の電力半導体デバイス。
- 前記ゲートバリアは、各電源電極からそれぞれの酸化膜本体によって隔てられている請求項1に記載の電力半導体デバイス。
- 前記バリアは、AlInGaNの合金から成り、前記酸化膜本体は、(AlGa)2O3から成る請求項7に記載の電力半導体デバイス。
- 前記バリアは、AlGaNから成り、前記酸化膜本体は、(AlGa)2O3から成る請求項7に記載の電力半導体デバイス。
- 前記窒素極性能動ヘテロ接合の上に形成される別の窒素極性能動ヘテロ接合をさらに備え、前記別の窒素極性能動ヘテロ接合は、第3の第III族窒化物半導体本体および第4の第III族窒化物半導体本体を含み、前記第3および前記第4の第III族窒化物半導体本体は、異なるバンドギャップを有し、2次元電子ガスを形成している請求項1に記載の電力半導体デバイス。
- 前記第4の第III族窒化物半導体本体は、前記ゲートを収容するためにリセスを備えている請求項10に記載の電力半導体デバイス。
- 半導体デバイスを製造する方法であって、
第III族窒化物半導体本体を成長させる工程と、
水素イオンを、前記第III族窒化物半導体本体の領域内に注入する工程と、
基板を、接合層を介して、前記領域内に水素イオンを注入した前記第III族窒化物半導体本体の表面に接合する工程と、
窒素極性第III族窒化物半導体本体を得るために、前記領域に沿って、前記基板に接合した前記第III族窒化物半導体本体を分離する工程と、
前記窒素極性第III族窒化物半導体本体上に、1つのバンドギャップを有する第1のIII族窒化物半導体本体と、前記1つのバンドギャップより小さい別のバンドギャップを有する第2のIII族窒化物半導体本体とを含む2次元電子ガスを有する窒素極性能動ヘテロ接合を形成する工程と、
少なくとも前記第2の第III族窒化物半導体本体に結合されているゲートと、前記ゲートにバイアスをかけない場合に伝導バンドをフェルミ準位より上に引き上げて前記2次元電子ガスを中断するために、前記ゲート配置と前記第2の第III族窒化物半導体本体との間に設けられ、前記第2の第III族窒化物半導体本体より大きいバンドギャップを有するゲートバリアとを形成する工程と、
少なくとも前記第2の第III族窒化物半導体本体に結合されている第1電源電極および第2電源電極を形成する工程
とを含む方法。 - 前記基板は、シリコンから成り、かつ、前記接合層は、二酸化シリコンから成る、請求項12に記載の方法。
- 前記III族窒化物半導体本体は、GaNから成る請求項12に記載の方法。
- 前記ゲートバリアは、AlInGaN系の合金である請求項12に記載の方法。
- 前記ゲートバリアは、AlGaNから成る請求項15に記載の方法。
- 前記III族窒化物半導体デバイスは、前記第1および第2の各前記電源電極と前記ゲートバリアとの間に配置された絶縁スペーサを含む請求項12に記載の方法。
- 前記絶縁スペーサは、(AlGa)2O3から成る請求項17に記載の方法。
- 前記窒素極性能動ヘテロ接合は、前記ゲートを収容するためにリセスを有する、請求項12に記載の方法。
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US69698505P | 2005-07-06 | 2005-07-06 | |
US60/696,985 | 2005-07-06 | ||
PCT/US2006/026323 WO2007006001A2 (en) | 2005-07-06 | 2006-07-06 | Iii-nitride enhancement mode devices |
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JP2009503810A JP2009503810A (ja) | 2009-01-29 |
JP5202312B2 true JP5202312B2 (ja) | 2013-06-05 |
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US (1) | US7759699B2 (ja) |
JP (1) | JP5202312B2 (ja) |
KR (1) | KR101045573B1 (ja) |
DE (1) | DE112006001751B4 (ja) |
WO (1) | WO2007006001A2 (ja) |
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US11024717B2 (en) | 2018-03-22 | 2021-06-01 | Kabushiki Kaisha Toshiba | Semiconductor device and method of manufacturing semiconductor device |
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US11024717B2 (en) | 2018-03-22 | 2021-06-01 | Kabushiki Kaisha Toshiba | Semiconductor device and method of manufacturing semiconductor device |
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JP2009503810A (ja) | 2009-01-29 |
KR20080030050A (ko) | 2008-04-03 |
WO2007006001A3 (en) | 2009-04-16 |
DE112006001751T5 (de) | 2008-05-08 |
KR101045573B1 (ko) | 2011-07-01 |
US20070007547A1 (en) | 2007-01-11 |
DE112006001751B4 (de) | 2010-04-08 |
WO2007006001A2 (en) | 2007-01-11 |
WO2007006001A9 (en) | 2007-03-29 |
US7759699B2 (en) | 2010-07-20 |
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