JP7021034B2 - 半導体装置 - Google Patents
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- JP7021034B2 JP7021034B2 JP2018173396A JP2018173396A JP7021034B2 JP 7021034 B2 JP7021034 B2 JP 7021034B2 JP 2018173396 A JP2018173396 A JP 2018173396A JP 2018173396 A JP2018173396 A JP 2018173396A JP 7021034 B2 JP7021034 B2 JP 7021034B2
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- 239000004065 semiconductor Substances 0.000 title claims description 260
- 150000004767 nitrides Chemical class 0.000 claims description 201
- 239000000758 substrate Substances 0.000 claims description 25
- 125000005843 halogen group Chemical group 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 description 12
- 150000002367 halogens Chemical class 0.000 description 12
- 238000010893 electron trap Methods 0.000 description 10
- 229910002601 GaN Inorganic materials 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000005533 two-dimensional electron gas Effects 0.000 description 1
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- H10D30/40—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels
- H10D30/47—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
- H10D30/471—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT]
- H10D30/473—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having confinement of carriers by multiple heterojunctions, e.g. quantum well HEMT
- H10D30/4732—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having confinement of carriers by multiple heterojunctions, e.g. quantum well HEMT using Group III-V semiconductor material
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- H10D30/40—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels
- H10D30/47—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
- H10D30/471—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT]
- H10D30/475—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having wider bandgap layer formed on top of lower bandgap active layer, e.g. undoped barrier HEMTs such as i-AlGaN/GaN HEMTs
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- H10D30/00—Field-effect transistors [FET]
- H10D30/40—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels
- H10D30/47—FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
- H10D30/471—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT]
- H10D30/475—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having wider bandgap layer formed on top of lower bandgap active layer, e.g. undoped barrier HEMTs such as i-AlGaN/GaN HEMTs
- H10D30/4755—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having wider bandgap layer formed on top of lower bandgap active layer, e.g. undoped barrier HEMTs such as i-AlGaN/GaN HEMTs having wide bandgap charge-carrier supplying layers, e.g. modulation doped HEMTs such as n-AlGaAs/GaAs HEMTs
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- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
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- H10D64/311—Gate electrodes for field-effect devices
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Description
本実施形態の半導体装置は、基板と、基板上に設けられた第1の窒化物半導体層と、第1の窒化物半導体層上に設けられ、第1の窒化物半導体層よりバンドギャップの大きな第2の窒化物半導体層と、第2の窒化物半導体層上に設けられたソース電極と、第2の窒化物半導体層上に設けられたドレイン電極と、ソース電極とドレイン電極の間に設けられたゲート電極と、ドレイン電極とゲート電極の間の第2の窒化物半導体層上に、ドレイン電極と離間して設けられたp型の第3の窒化物半導体層と、を備える。
本実施形態の半導体装置は、基板と、基板上に設けられた第1の窒化物半導体層と、第1の窒化物半導体層上に設けられたソース電極と、第1の窒化物半導体層上に設けられたドレイン電極と、ソース電極とドレイン電極の間に設けられたゲート電極と、第1の窒化物半導体層とドレイン電極の間に設けられ、第1の窒化物半導体層よりバンドギャップの大きな第2の窒化物半導体層と、ゲート電極とドレイン電極の間の第1の窒化物半導体層上において、第2の窒化物半導体層の側方に設けられた、第1の窒化物半導体層よりバンドギャップが大きく第2の窒化物半導体層よりバンドギャップの小さな第3の窒化物半導体層と、第1の窒化物半導体層とソース電極の間に設けられ、第1の窒化物半導体層及び第3の窒化物半導体層よりバンドギャップの大きな第4の窒化物半導体層と、を備える。
本実施形態の半導体装置は、基板と、基板上に設けられた第1の窒化物半導体層と、第1の窒化物半導体層上に設けられ、第1の窒化物半導体層よりバンドギャップの大きな第2の窒化物半導体層と、第2の窒化物半導体層上に設けられたソース電極と、第2の窒化物半導体層上に設けられたドレイン電極と、ソース電極とドレイン電極の間に設けられたゲート電極と、ドレイン電極とゲート電極の間の第2の窒化物半導体層内において、ドレイン電極と離間して第2の窒化物半導体層の表面に設けられた、ハロゲン族元素を含むハロゲン含有窒化物半導体層(第3の窒化物半導体層)と、を備える。
4 第2の端子部
6 第1の配線部
8 第1の接続部
10 第2の接続部
12 第2の配線部
14 第3の端子部
15 穴
16 第4の端子部
18 第5の端子部
20 第3の接続部
22 第4の接続部
24 第5の接続部
26 第6の接続部
100 端子板
110 半導体素子
120 電極部材
130 補助配線
132 端部
140 ベース
150 ボンディングワイヤ
200 半導体装置
Claims (7)
- 基板と、
前記基板上に設けられた第1の窒化物半導体層と、
前記第1の窒化物半導体層上に設けられたソース電極と、
前記第1の窒化物半導体層上に設けられたドレイン電極と、
前記ソース電極と前記ドレイン電極の間に設けられたゲート電極と、
前記第1の窒化物半導体層と前記ドレイン電極の間に設けられ、前記第1の窒化物半導体層よりバンドギャップの大きな第2の窒化物半導体層と、
前記ゲート電極と前記ドレイン電極の間の前記第1の窒化物半導体層上において、前記第2の窒化物半導体層の側方に設けられた、前記第1の窒化物半導体層よりバンドギャップが大きく前記第2の窒化物半導体層よりバンドギャップの小さな第3の窒化物半導体層と、
前記第1の窒化物半導体層と前記ソース電極の間に設けられ、前記第1の窒化物半導体層及び前記第3の窒化物半導体層よりバンドギャップの大きな第4の窒化物半導体層と、
を備える半導体装置であって、
前記半導体装置はトレンチ構造を有し、
前記ゲート電極は絶縁膜を介して前記第2の窒化物半導体層の側方に設けられる半導体装置。 - 前記ドレイン電極と前記ゲート電極の距離d1と、前記ドレイン電極と前記ゲート電極の間における基板面に平行な方向の前記第3の窒化物半導体層の長さd3は0.5μm≦d1-d3≦2μmである請求項1記載の半導体装置。
- 前記第2の窒化物半導体層の膜厚t1と、前記第3の窒化物半導体層の膜厚t3の比t1/t3は1以上1.7以下である請求項1又は請求項2記載の半導体装置。
- 前記ゲート電極が前記第1の窒化物半導体層の一部に食い込む請求項1乃至請求項3いずれか一項記載の半導体装置。
- 基板と、
前記基板上に設けられた第1の窒化物半導体層と、
前記第1の窒化物半導体層上に設けられ、前記第1の窒化物半導体層よりバンドギャップの大きな第2の窒化物半導体層と、
前記第2の窒化物半導体層上に設けられたソース電極と、
前記第2の窒化物半導体層上に設けられたドレイン電極と、
前記ソース電極と前記ドレイン電極の間に設けられたゲート電極と、
前記ドレイン電極と前記ゲート電極の間の前記第2の窒化物半導体層内において、前記ドレイン電極と離間して前記第2の窒化物半導体層の表面に設けられた、ハロゲン族元素を含む第3の窒化物半導体層と、
を備える半導体装置であって、
前記半導体装置はトレンチ構造を有し、
前記ゲート電極は絶縁膜を介して前記第2の窒化物半導体層の側方に設けられる半導体装置。 - 前記第2の窒化物半導体層の膜厚t1と、前記第3の窒化物半導体層の膜厚t4の比t1/t4は1.5以上10以下である請求項5記載の半導体装置。
- 前記ゲート電極が前記第1の窒化物半導体層の一部に食い込む請求項5又は請求項6記載の半導体装置。
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JP2018173396A JP7021034B2 (ja) | 2018-09-18 | 2018-09-18 | 半導体装置 |
US16/287,394 US20200091330A1 (en) | 2018-09-18 | 2019-02-27 | Semiconductor device |
CN201910171830.3A CN110911490B (zh) | 2018-09-18 | 2019-03-07 | 半导体装置 |
US17/494,639 US12119396B2 (en) | 2018-09-18 | 2021-10-05 | Semiconductor device |
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JP7384374B2 (ja) | 2019-02-27 | 2023-11-21 | 株式会社ウーノラボ | 中央演算処理装置 |
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US12119396B2 (en) | 2024-10-15 |
US20220029006A1 (en) | 2022-01-27 |
US20200091330A1 (en) | 2020-03-19 |
JP2020047695A (ja) | 2020-03-26 |
CN110911490A (zh) | 2020-03-24 |
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