JP2018148130A - 半導体発光素子および半導体発光素子の製造方法 - Google Patents
半導体発光素子および半導体発光素子の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 76
- 239000000463 material Substances 0.000 claims abstract description 75
- 229910002704 AlGaN Inorganic materials 0.000 claims abstract 18
- 238000005253 cladding Methods 0.000 claims description 53
- 239000002994 raw material Substances 0.000 claims description 9
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 54
- 239000000758 substrate Substances 0.000 description 24
- 229910002601 GaN Inorganic materials 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 13
- 238000000295 emission spectrum Methods 0.000 description 10
- 230000006641 stabilisation Effects 0.000 description 9
- 238000011105 stabilization Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000001451 molecular beam epitaxy Methods 0.000 description 4
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- AUCDRFABNLOFRE-UHFFFAOYSA-N alumane;indium Chemical compound [AlH3].[In] AUCDRFABNLOFRE-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000004038 photonic crystal Substances 0.000 description 2
- -1 AlGaN Chemical compound 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-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
- 229910021529 ammonia Inorganic materials 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 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
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 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
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 1
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- H01L33/04—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction
- H01L33/06—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
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- H01L33/26—Materials of the light emitting region
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Abstract
Description
実施例1では、2層の平坦化層41,42を形成し、平坦化層41,42のAlNモル分率を井戸層36よりも高くすることにより、平坦化層41,42の伝導帯の基底準位E1が井戸層36の基底準位E0より高くなるようにした。実施例1では、平坦化層41,42の形成時に安定化処理を行っていない。実施例1では、100mAの通電時において、発光波長285nm、発光スペクトルの半値全幅17.8nm、発光出力4.3mWが得られた。
Claims (10)
- n型AlGaN系半導体材料のn型クラッド層と、
前記n型クラッド層上に設けられるAlGaN系半導体材料の平坦化層と、前記平坦化層上に設けられるAlGaN系半導体材料の障壁層と、前記障壁層上に設けられるAlGaN系半導体材料の井戸層とを含む活性層と、
前記活性層上に設けられるp型半導体層と、を備え、
前記活性層は、波長360nm以下の深紫外光を発し、
前記平坦化層は、前記障壁層よりもAlNモル分率が低く、前記井戸層よりも伝導帯の基底準位が高いことを特徴とする半導体発光素子。 - 前記平坦化層は、前記井戸層よりも積層方向の厚さが小さいことを特徴とする請求項1に記載の半導体発光素子。
- 前記平坦化層は、前記井戸層よりもAlNモル分率が高いことを特徴とする請求項1または2に記載の半導体発光素子。
- 前記平坦化層と前記井戸層との間の伝導帯の基底準位の差は、前記活性層の発光波長に対応する光エネルギーの2%以上であることを特徴とする請求項1から3のいずれか一項に記載の半導体発光素子。
- 前記平坦化層は、第1平坦化層であり、前記障壁層は、第1障壁層であり、
前記活性層は、前記第1平坦化層と前記第1障壁層の間に設けられるAlGaN系半導体材料の第2平坦化層と、前記第1平坦化層と前記第2平坦化層の間に設けられるAlGaN系半導体材料の第2障壁層とをさらに含み、
前記第2平坦化層は、前記第1障壁層および前記第2障壁層よりもAlNモル分率が低く、前記活性層よりも伝導帯の基底準位が高いことを特徴とする請求項1から4のいずれか一項に記載の半導体発光素子。 - 前記第2平坦化層の積層方向の厚さは、前記井戸層の厚さより小さいことを特徴とする請求項5に記載の半導体発光素子。
- 前記第2平坦化層のAlNモル分率は、前記井戸層のAlNモル分率よりも高いことを特徴とする請求項5または6に記載の半導体発光素子。
- 前記活性層は、前記n型クラッド層と前記平坦化層の間に設けられるAlGaN系半導体材料の別の障壁層をさらに含むことを特徴とする請求項1から7のいずれか一項に記載の半導体発光素子。
- 波長360nm以下の深紫外光を発する半導体発光素子の製造方法であって、
n型AlGaN系半導体材料のn型クラッド層上にAlGaN系半導体材料の平坦化層を形成する工程と、
前記平坦化層上にAlGaN系半導体材料の障壁層を形成する工程と、
前記障壁層上にAlGaN系半導体材料の井戸層を形成する工程と、
前記井戸層上にp型半導体層を形成する工程と、を備え、
前記平坦化層は、前記障壁層よりもAlNモル分率が低く、前記井戸層よりも伝導帯の基底準位が高いことを特徴とする半導体発光素子の製造方法。 - 前記障壁層を形成する工程は、III族原料およびV族原料を供給してAlGaN系半導体材料層を成長させる工程と、III族原料を供給停止した状態でV族原料を6秒以上30秒以下の時間にわたって供給して前記AlGaN系半導体材料層を安定化させる工程と、を含むことを特徴とする請求項9に記載の半導体発光素子の製造方法。
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JP2017044055A JP6486401B2 (ja) | 2017-03-08 | 2017-03-08 | 半導体発光素子および半導体発光素子の製造方法 |
PCT/JP2018/006231 WO2018163824A1 (ja) | 2017-03-08 | 2018-02-21 | 半導体発光素子および半導体発光素子の製造方法 |
EP18764536.1A EP3595021B1 (en) | 2017-03-08 | 2018-02-21 | Semiconductor light-emitting element and method for manufacturing semiconductor light-emitting element |
CN201880015866.6A CN110383508A (zh) | 2017-03-08 | 2018-02-21 | 半导体发光元件及半导体发光元件的制造方法 |
US16/563,337 US11824137B2 (en) | 2017-03-08 | 2019-09-06 | Semiconductor light-emitting element and method for manufacturing semiconductor light-emitting element |
US18/486,430 US20240038926A1 (en) | 2017-03-08 | 2023-10-13 | Semiconductor light-emitting element and method for manufacturing semiconductor light-emitting element |
US18/486,388 US20240038925A1 (en) | 2017-03-08 | 2023-10-13 | Semiconductor light-emitting element and method for manufacturing semiconductor light-emitting element |
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US20190393378A1 (en) | 2019-12-26 |
US20240038925A1 (en) | 2024-02-01 |
US11824137B2 (en) | 2023-11-21 |
EP3595021A4 (en) | 2020-11-11 |
US20240038926A1 (en) | 2024-02-01 |
CN110383508A (zh) | 2019-10-25 |
EP3595021A1 (en) | 2020-01-15 |
WO2018163824A1 (ja) | 2018-09-13 |
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JP6486401B2 (ja) | 2019-03-20 |
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