JP6999024B2 - 発光装置における効率的な電子およびホールブロック用の歪みAlGaInP層 - Google Patents
発光装置における効率的な電子およびホールブロック用の歪みAlGaInP層 Download PDFInfo
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- 230000000903 blocking effect Effects 0.000 title description 4
- 239000000463 material Substances 0.000 claims description 70
- 230000004888 barrier function Effects 0.000 claims description 65
- 239000000758 substrate Substances 0.000 claims description 40
- 229910052738 indium Inorganic materials 0.000 claims description 25
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 25
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 229910001096 P alloy Inorganic materials 0.000 description 40
- 229910052782 aluminium Inorganic materials 0.000 description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 20
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 239000000969 carrier Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/02—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
- H01L33/14—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 carrier transport control structure, e.g. highly-doped semiconductor layer or current-blocking structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/02—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
- H01L33/14—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 carrier transport control structure, e.g. highly-doped semiconductor layer or current-blocking structure
- H01L33/145—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 carrier transport control structure, e.g. highly-doped semiconductor layer or current-blocking structure with a current-blocking structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/0004—Devices characterised by their operation
- H01L33/0008—Devices characterised by their operation having p-n or hi-lo junctions
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/02—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
- 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
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—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
- H01L33/02—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
- H01L33/12—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 stress relaxation structure, e.g. buffer layer
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- H—ELECTRICITY
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- H01L33/00—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
- H01L33/02—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
- H01L33/26—Materials of the light emitting region
- H01L33/30—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table
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Description
図3および図4の例では、層320~340は、(AlxGa1-x)1-yInyP合金系からの材料で形成される。より具体的には、歪みバリア層構造330a-1および電子ブロック層340aは、各々、(AlxGa1-x)1-yInyP合金系からの材料で形成され、材料のアルミニウム比は、53%を超え(0.53<x<1)、インジウム比は、49%未満である(0<y<0.49)。層330aおよび340aにおける53%超のアルミニウムの存在により、これらの層の伝導帯Cbが、X-帯のエネルギーにより定められる一方、層内の49%未満のインジウムの存在により、層の格子に引っ張り歪みが導入され、その結果、これらのX-帯エネルギーが伝導帯に対して高められる。前述のように、歪みバリア層構造330a-1および電子ブロック層340aのX-帯エネルギーの上昇により、それぞれのバンドギャップが広げられ、それらの電子ブロック機能が高められる。
Claims (9)
- 発光装置であって、
第1のAlGaInP材料を有する電子ブロック層と、
第2のAlGaInP材料を有するホールブロック層であって、組成が(AlxGa(1-x))1-yInyPで表され、ここで、0.4≦x<1であり、0.49≦y≦0.7であり、前記第1のAlGaInP層におけるインジウム比よりも高いインジウム比を有する、ホールブロック層と、
前記ホールブロック層と前記電子ブロック層との間の活性層と、
を有し、
前記電子ブロック層は、第1のp型層および第2のp型層を有し、
前記第1のp型層は、非歪み化され、
前記第2のp型層は、引っ張り歪みを有し、
前記第2のp型層は、前記第1のp型層よりも前記活性層により近く、前記第1のp型層は、前記第2のp型層の直上に設置され、前記電子ブロック層は、前記第1のp型層を除き、非歪み化された層を有さず、
前記ホールブロック層は、第1のn型層および第2のn型層を有し、
前記第1のn型層は、非歪み化され、
前記第2のn型層は、圧縮歪みを有し、
前記第2のn型層は、前記第1のn型層よりも前記活性層により近く、前記ホールブロック層は、前記第1のn型層を除き、非歪み化された層を含まない、発光装置。 - 前記第1のn型層は、(AlxGa(1-x))1-yInyPで表される組成を有し、ここで、0.4≦x<1であり、y=0.49である、請求項1に記載の発光装置。
- 前記活性層は、
引っ張り歪みを有する第1のバリア層と、
引っ張り歪みを有する第2のバリア層と、
前記第1のバリア層と前記第2のバリア層との間のウェル層と、
を有する、請求項1に記載の発光装置。 - さらに、GaAs基板を有し、
前記ホールブロック層、前記電子ブロック層、および前記活性層は、前記GaAs基板の同じ側に形成され、
前記ホールブロック層、前記電子ブロック層、および前記活性層の各々は、それぞれのAlGaInP材料で形成される、請求項1に記載の発光装置。 - 前記活性層は、少なくとも一つのウェル構造を有し、
該ウェル構造は、
引っ張り歪みを有する第1のバリア層と、
引っ張り歪みを有する第2のバリア層と、
前記第1のバリア層と前記第2のバリア層との間に配置されたウェル層と、
を有し、
前記電子ブロック層は、当該発光装置の上部閉じ込め層および当該発光装置の下部閉じ込め層の一つの一部であり、
前記ホールブロック層は、当該発光装置の上部閉じ込め層および当該発光装置の下部閉じ込め層の他方の一部である、請求項1に記載の発光装置。 - 前記第2の材料は、(AlxGa(1-x))1-yInyPで表される組成を有し、ここで、0.4<x<1であり、0.49<y<0.7である、請求項5に記載の発光装置。
- 前記ホールブロック層は、第1のn型層および第2のn型層を有し、
前記第1のn型層は、非歪み化され、
前記第2のn型層は、圧縮歪み化されており、
前記第1のn型層は、(AlxGa(1-x))1-yInyPで表される組成を有し、ここで、0≦x<1であり、0.49≦y≦1である、請求項5に記載の発光装置。 - 前記活性層は、570乃至680nmの範囲の波長を放射するように配置される、請求項1に記載の発光装置。
- 前記活性層は、少なくとも一つのウェル構造を有し、
前記電子ブロック層により提供される電子の閉じ込めの度合いは、前記電子ブロック層と前記少なくとも一つのウェル構造の間の伝導帯オフセットに比例する、請求項1に記載の発光装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US15/662,952 US10141477B1 (en) | 2017-07-28 | 2017-07-28 | Strained AlGaInP layers for efficient electron and hole blocking in light emitting devices |
US15/662,952 | 2017-07-28 | ||
EP18152290.5 | 2018-01-18 | ||
EP18152290 | 2018-01-18 | ||
PCT/US2018/041771 WO2019022960A1 (en) | 2017-07-28 | 2018-07-12 | CONSTRAINTS OF ALGAINP FOR EFFICIENT BLOCKING OF ELECTRON AND HOLES IN LIGHT EMITTING DEVICES |
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JP2020529129A JP2020529129A (ja) | 2020-10-01 |
JP6999024B2 true JP6999024B2 (ja) | 2022-01-18 |
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JP (1) | JP6999024B2 (ja) |
KR (1) | KR102294202B1 (ja) |
CN (1) | CN111108614B (ja) |
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CN111108614A (zh) | 2020-05-05 |
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