JP2019145693A - 半導体装置の製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 86
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 41
- 150000004767 nitrides Chemical class 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 29
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 29
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 27
- 229910052733 gallium Inorganic materials 0.000 claims description 27
- 239000012298 atmosphere Substances 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 227
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 56
- 230000004888 barrier function Effects 0.000 description 32
- 229910052757 nitrogen Inorganic materials 0.000 description 29
- 229910002601 GaN Inorganic materials 0.000 description 24
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 17
- 150000002500 ions Chemical class 0.000 description 15
- 239000000758 substrate Substances 0.000 description 13
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- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 9
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 9
- 229910052731 fluorine Inorganic materials 0.000 description 9
- 239000011737 fluorine Substances 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 150000002431 hydrogen Chemical class 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 239000012300 argon atmosphere Substances 0.000 description 6
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
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- 238000000280 densification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
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- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- -1 for example Chemical compound 0.000 description 4
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- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical group [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
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- 238000005229 chemical vapour deposition Methods 0.000 description 3
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- 239000011229 interlayer Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
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- AUCDRFABNLOFRE-UHFFFAOYSA-N alumane;indium Chemical compound [AlH3].[In] AUCDRFABNLOFRE-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 2
- CKHJYUSOUQDYEN-UHFFFAOYSA-N gallium(3+) Chemical compound [Ga+3] CKHJYUSOUQDYEN-UHFFFAOYSA-N 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action 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
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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Abstract
Description
第1の実施形態の半導体装置の製造方法は、窒化物半導体層に接する第1の面と、第1の面と反対側の第2の面とを有し、酸化物及び酸窒化物の少なくともいずれか一方を含む絶縁層を形成し、絶縁層に第1の面の側が第2の面の側に対して正となる電圧を印加した状態で、温度が600℃以上1100℃以下の第1の熱処理を行う。さらに、第1の熱処理を行う前に第2の面に接する導電層を形成する。また、第1の熱処理を行った後に、絶縁層に第1の面の側が第2の面の側に対して負となる電圧を印加した状態で第2の熱処理を行う。
第2の実施形態の半導体装置の製造方法は、第2の面に接する導電層を形成する前に、第1の熱処理を行う点で第1の実施形態と異なっている。以下、第1の実施形態と重複する内容については、一部記述を省略する。
15 バリア層(窒化物半導体層)
16 ゲート絶縁層(絶縁層)
100 HEMT(半導体装置)
118 導電層
Claims (11)
- 窒化物半導体層に接する第1の面と、前記第1の面と反対側の第2の面とを有し、酸化物及び酸窒化物の少なくともいずれか一方を含む絶縁層を形成し、
前記絶縁層に前記第1の面の側が前記第2の面の側に対して正となる電圧を印加した状態で、温度が600℃以上1100℃以下の第1の熱処理を行う半導体装置の製造方法。 - 前記第1の熱処理を行う前に前記第2の面に接する導電層を形成する請求項1記載の半導体装置の製造方法。
- 前記酸化物は酸化シリコン又は酸化アルミニウムであり、前記酸窒化物は酸窒化シリコン又は酸窒化アルミニウムである請求項1又は請求項2記載の半導体装置の製造方法。
- 前記第1の熱処理は非酸化性雰囲気で行われる請求項1ないし請求項3いずれか一項記載の半導体装置の製造方法。
- 前記第1の熱処理を行う際の前記絶縁層の中の電界強度は、2MV/cm以上10MV/cm以下である請求項1ないし請求項4いずれか一項記載の半導体装置の製造方法。
- 前記第1の熱処理の温度は800℃以上である請求項1ないし請求項5いずれか一項記載の半導体装置の製造方法。
- 前記第1の熱処理の時間は5分以上60分以下である請求項1ないし請求項6いずれか一項記載の半導体装置の製造方法。
- 前記窒化物半導体層はガリウムを含む請求項1ないし請求項7いずれか一項記載の半導体装置の製造方法。
- 前記第1の熱処理を行った後に、前記絶縁層に前記第1の面の側が前記第2の面の側に対して負となる電圧を印加した状態で第2の熱処理を行う請求項1ないし請求項8いずれか一項記載の半導体装置の製造方法。
- 前記第2の熱処理の温度は、前記第1の熱処理よりも低い請求項9記載の半導体装置の製造方法。
- 前記第2の熱処理の温度は400℃以上1000℃以下である請求項9又は請求項10記載の半導体装置の製造方法。
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Cited By (3)
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WO2021161509A1 (ja) * | 2020-02-14 | 2021-08-19 | トヨタ自動車株式会社 | 窒化物半導体装置の製造方法 |
JP2021184431A (ja) * | 2020-05-22 | 2021-12-02 | 豊田合成株式会社 | 半導体装置の製造方法 |
DE112020001179T5 (de) | 2019-03-13 | 2022-03-17 | Honda Motor Co., Ltd. | Elektrisches Kupplungssystem |
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JPS57115823A (en) | 1981-01-12 | 1982-07-19 | Agency Of Ind Science & Technol | Manufacture of amorphous semiconductor film |
JP2003218352A (ja) | 2002-01-28 | 2003-07-31 | Fujitsu Ltd | 絶縁ゲート型半導体装置の製造方法 |
US8785933B2 (en) * | 2011-03-04 | 2014-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
JP6659488B2 (ja) | 2016-07-22 | 2020-03-04 | 株式会社東芝 | 半導体装置、電源回路、コンピュータ、及び半導体装置の製造方法 |
JP6736513B2 (ja) * | 2017-04-24 | 2020-08-05 | 株式会社東芝 | 半導体装置、電源回路、及び、コンピュータ |
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DE112020001179T5 (de) | 2019-03-13 | 2022-03-17 | Honda Motor Co., Ltd. | Elektrisches Kupplungssystem |
DE112020001179B4 (de) | 2019-03-13 | 2024-04-25 | Honda Motor Co., Ltd. | Clutch-by-Wire-System |
WO2021161509A1 (ja) * | 2020-02-14 | 2021-08-19 | トヨタ自動車株式会社 | 窒化物半導体装置の製造方法 |
JP2021184431A (ja) * | 2020-05-22 | 2021-12-02 | 豊田合成株式会社 | 半導体装置の製造方法 |
JP7276247B2 (ja) | 2020-05-22 | 2023-05-18 | 豊田合成株式会社 | 半導体装置の製造方法 |
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