JP7493601B2 - 電流崩壊が減少し、電力付加効率が向上した窒化ガリウム高電子移動度トランジスタ - Google Patents
電流崩壊が減少し、電力付加効率が向上した窒化ガリウム高電子移動度トランジスタ Download PDFInfo
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title description 111
- 229910002601 GaN Inorganic materials 0.000 title description 109
- 229910052790 beryllium Inorganic materials 0.000 claims description 49
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 43
- 229910052799 carbon Inorganic materials 0.000 claims description 41
- 239000000758 substrate Substances 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 230000006911 nucleation Effects 0.000 claims description 7
- 238000010899 nucleation Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000002019 doping agent Substances 0.000 description 27
- 239000012535 impurity Substances 0.000 description 9
- 229910002704 AlGaN Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910017083 AlN Inorganic materials 0.000 description 4
- 238000001451 molecular beam epitaxy Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910003465 moissanite Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- -1 rare earth nitride Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005533 two-dimensional electron gas Effects 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000004616 Pyrometry Methods 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- H—ELECTRICITY
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- 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
- H01L29/66—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
- H01L29/772—Field effect transistors
- 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
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- 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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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
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- H01L29/66409—Unipolar field-effect transistors
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Description
Si、Al2O3、又はSiCなどの基板;
AlN又はグラフェンなどの核形成層は存在しなとも良い;
厚さ200nm~数ミクロンのGaN絶縁性(炭素、マグネシウム、鉄などのドーパント)を付与するように典型的にドープされた、高抵抗(典型的には1×105オーム×cmより大きい) GaNバッファ;
非意図的にドープされた(unintentionally doped, UID) GaNチャネル、意図的なドーパントの無い典型的な厚さ50-500nm、2D電子ガス(2DEG)は、障壁界面へのUID GaNチャネル近傍に存在する;
本明細書、特許請求の範囲及び図面において「UID GaNチャネル層」は、非意図的にドープされたGaNチャネル層を意味するものとする。
AlGaN、InAlN、InAlGaN(従来のIII窒化物)又はScAlN (希土類窒化物)などのバリア層;
GaN、AlN又はSiNxなどのキャップ層は存在しなくとも良い。
Claims (10)
- 高電子移動度トランジスタ構造であって:
基板;
前記基板上に配置された高抵抗GaNバッファ層であり、ベリリウムでドープされており、2.2×103オーム*cmより大きい抵抗率を有する高抵抗GaNバッファ層;
前記高抵抗GaNバッファ層上に配置され、前記高抵抗GaNバッファ層と直接接触する、ドープされたGaN層であり、10~300nmの厚さを有し、ベリリウム及び炭素でドープされており、ベリリウムドーピング濃度が5×1016~3×1019原子/cm3であり、炭素ドーピング濃度がベリリウムドーピング濃度より低いが1×1016原子/cm3より高い、ドープされたGaN層;及び
前記ドープされたGaN層上で、前記ドープされたGaN層と直接接触する、非意図的にドープされた(UID) GaNチャネル層であり、中に2DEGチャネルを有し、50~200nmの厚さを有するUID GaNチャネル層;
を含む構造。 - 前記UID GaNチャネル層の上に、前記UID GaNチャネル層と直接接触するバリア層を含む、請求項1に記載の構造。
- 前記基板上に配置された核形成層を含む、請求項1に記載の構造。
- 高電子移動度トランジスタ構造であって:
基板;
前記基板上に配置された高抵抗GaNバッファ層であり、2.2×103オーム*cmより大きい抵抗率を有する高抵抗GaNバッファ層;
前記高抵抗GaNバッファ層上に配置され、前記高抵抗GaNバッファ層と直接接触する、ドープされたGaN層であり、ベリリウム及び炭素でドープされており、ベリリウムドーピング濃度が5×1016~3×1019原子/cm3であり、炭素ドーピング濃度がベリリウムドーピング濃度より低いが1×1016原子/cm3より高い、ドープされたGaN層;
前記ドープされたGaN層上で、前記ドープされたGaN層と直接接触し、非意図的にドープされた(UID) GaNチャネル層であり、中に2DEGチャネルを有し、200nm未満の厚さを有するUID GaNチャネル層;
を含む構造。 - 前記UID GaNチャネル層が50nm以上の厚さを有する、請求項4に記載の構造。
- 前記ドープされたGaN層が10~300nmの厚さを有する、請求項4に記載の構造。
- 前記UID GaNチャネル層上に、前記UID GaNチャネル層と直接接触する障壁層を含む、請求項4に記載の構造。
- 高電子移動度トランジスタ構造であって:
基板;
前記基板上に配置された高抵抗GaNバッファ層であり、ベリリウム、鉄及び/又は炭素でドープされている高抵抗GaNバッファ層;
前記高抵抗GaNバッファ層上に配置され、前記高抵抗GaNバッファ層と直接接触する、ドープされたGaN層であり、ベリリウム及び炭素でドープされており、ベリリウムドーピング濃度が5×1016~3×1019原子/cm3であり、炭素ドーピング濃度がベリリウムドーピング濃度より低いが1×1016原子/cm3より高い、ドープされたGaN層;及び
前記ドープされたGaN層上で、前記ドープされたGaN層と直接接触する、非意図的にドープされた(UID) GaNチャネル層であり、中に2DEGチャネルを有し、200nm未満の厚さを有するUID GaNチャネル層;
を含む構造。 - 前記UID GaNチャネル層が50nm以上の厚さを有する、請求項8に記載の構造。
- 前記ドープされたGaN層が10~300nmの厚さを有する、請求項8に記載の構造。
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US16/727,252 | 2019-12-26 | ||
US16/727,252 US11545566B2 (en) | 2019-12-26 | 2019-12-26 | Gallium nitride high electron mobility transistors (HEMTs) having reduced current collapse and power added efficiency enhancement |
PCT/US2020/058656 WO2021133468A1 (en) | 2019-12-26 | 2020-11-03 | GALLIUM NITRIDE HIGH ELECTRON MOBILITY TRANSISTORS (HEMTs) HAVING REDUCED CURRENT COLLAPSE AND POWER ADDED EFFICIENCY ENHANCEMENT |
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IL (1) | IL293444B2 (ja) |
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US11101378B2 (en) | 2019-04-09 | 2021-08-24 | Raytheon Company | Semiconductor structure having both enhancement mode group III-N high electron mobility transistors and depletion mode group III-N high electron mobility transistors |
CN111106171B (zh) * | 2019-12-31 | 2024-03-19 | 晶能光电股份有限公司 | AlN势垒层、AlN/GaN HEMT外延结构及其生长方法 |
US11362190B2 (en) | 2020-05-22 | 2022-06-14 | Raytheon Company | Depletion mode high electron mobility field effect transistor (HEMT) semiconductor device having beryllium doped Schottky contact layers |
TWI805276B (zh) * | 2022-03-14 | 2023-06-11 | 環球晶圓股份有限公司 | 高電子遷移率電晶體結構及其製造方法 |
TWI838037B (zh) * | 2022-12-26 | 2024-04-01 | 創世電股份有限公司 | 半導體元件 |
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WO2021133468A1 (en) | 2021-07-01 |
TWI836158B (zh) | 2024-03-21 |
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TW202135326A (zh) | 2021-09-16 |
EP4082044A1 (en) | 2022-11-02 |
US11545566B2 (en) | 2023-01-03 |
IL293444B2 (en) | 2023-05-01 |
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