JP7154429B2 - 発光ダイオード及びその製作方法 - Google Patents
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- JP7154429B2 JP7154429B2 JP2021546032A JP2021546032A JP7154429B2 JP 7154429 B2 JP7154429 B2 JP 7154429B2 JP 2021546032 A JP2021546032 A JP 2021546032A JP 2021546032 A JP2021546032 A JP 2021546032A JP 7154429 B2 JP7154429 B2 JP 7154429B2
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- 238000004519 manufacturing process Methods 0.000 title description 10
- 239000004065 semiconductor Substances 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 229910005540 GaP Inorganic materials 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 8
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 7
- 229910002065 alloy metal Inorganic materials 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical group 0.000 claims description 7
- 150000004767 nitrides Chemical class 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 claims description 4
- 229910002601 GaN Inorganic materials 0.000 claims description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical group [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 230000031700 light absorption Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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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
- H01L33/36—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 electrodes
- H01L33/40—Materials therefor
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- H01L33/36—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 electrodes
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- 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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- 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
- H01L33/32—Materials of the light emitting region containing only elements of Group III and Group V of the Periodic Table containing nitrogen
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- H01L33/40—Materials therefor
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Description
120 発光層
130 第2の半導体層
200 透明絶縁層
210 プラットフォーム
220 開口
310 オーミック接触層
320 中間層
400 成長基板
500 反射層
510 孔洞
520 第2の階段
600 支持基板
710 第1の電極
720 第2の電極
800 犧牲層
Claims (22)
- 第1の半導体層と第2の半導体層と兩者の間にある発光層とを有する発光エピタキシャル層と、少なくとも発光エピタキシャル層の第2の半導体層の一側に形成され、プラットフォームと一連の開口を有し、開口から発光エピタキシャル層が露出する透明絶縁層と、を含み、透明絶縁層の開口内にオーミック接触層を有する発光ダイオードであって、オーミック接触層と発光エピタキシャル層との間に中間層を有し、中間層は熱拡散率がオーミック接触層より低い材料を用い、且つ、中間層は金属酸化物もしくは金属窒化物であり、且つ、フィルム状もしくは粒状であることを特徴とする発光ダイオード。
- 開口から露出する発光エピタキシャル層は第1の半導体層もしくは第2の半導体層であることを特徴とする請求項1に記載の発光ダイオード。
- 中間層は金属酸化物層であることを特徴とする請求項1に記載の発光ダイオード。
- 中間層はITO、IZO、GZO、もしくはAZOであることを特徴とする請求項1に記載の発光ダイオード。
- 中間層はTiNもしくはAlNであることを特徴とする請求項1に記載の発光ダイオード。
- 中間層の厚さは10オングストローム以上で200オングストローム以下であることを特徴とする請求項3~請求項5のいずれか一項に記載の発光ダイオード。
- 中間層の厚さは20オングストローム以上で50オングストローム以下であることを特徴とする請求項3~請求項5のいずれか一項に記載の発光ダイオード。
- 中間層はオーミック接触層と第2の半導体層との間の電気的接続を阻止しないことを特徴とする請求項1に記載の発光ダイオード。
- 中間層の電気抵抗率はオーミック接触層より高いことを特徴とする請求項1に記載の発光ダイオード。
- オーミック接触層の材料はAuBe、AuGe、もしくはAuGeNiであることを特徴とする請求項1に記載の発光ダイオード。
- オーミック接触層材料の厚さは200オングストローム以下であることを特徴とする請求項10に記載の発光ダイオード。
- 開口の口径は1.5μm以上で2.5μm以下、もしくは2.5μmより大きく且つ10μm以下であることを特徴とする請求項1に記載の発光ダイオード。
- 開口の面積の透明絶縁層の総面積に占める比率は3%以上で8%以下、もしくは8%より大きく且つ15%以下であることを特徴とする請求項1に記載の発光ダイオード。
- 透明絶縁層の材料はフッ化マグネシウムもしくは二酸化ケイ素であることを特徴とする請求項1に記載の発光ダイオード。
- プラットフォームとオーミック接触層の発光エピタキシャル層から離れた側に反射層を有することを特徴とする請求項1に記載の発光ダイオード。
- 反射層はAg、AuもしくはDBRであることを特徴とする請求項15に記載の発光ダイオード。
- プラットフォームと反射層との間に中間層を有することを特徴とする請求項15に記載の発光ダイオード。
- 発光エピタキシャル層は窒化ガリウム基もしくはGaAs基であることを特徴とする請求項1に記載の発光ダイオード。
- 第2の半導体はリン化ガリウムを含み、リン化ガリウムは中間層に接触することを特徴とする請求項1に記載の発光ダイオード。
- (1)基板に第1の半導体層と発光層と第2の半導体層とを順番に作製する工程と、(2)第2の半導体の上に、プラットフォームと一連の開口を有する透明絶縁層を作製する工程と、(3)プラットフォームの上に犠牲層を作製する工程と、(4)犠牲層と開口の箇所に透明導電フィルムを積層して中間層とする工程と、(5)透明導電フィルムの上にオーミック接触層となる合金フィルムを積層する工程と、(6)犧牲層及び犧牲層の上にある透明導電フィルム及び合金フィルムを除去してプラットフォームを露出させる工程と、(7)プラットフォームと合金金属フィルムの上に金属反射層を作製する工程と、(8)金属反射層の表面に支持基板をボンディングして、支持基板を直接に第2の電極とし、もしくは第2の電極の支持体とする工程と、(9)基板を剥離させることにより発光エピタキシャル層を露出させてから、露出する発光エピタキシャル層の上に第1の電極を作製する工程と、が含まれており、
前記中間層は熱拡散率が前記オーミック接触層より低い材料を用い、且つ、
前記中間層は金属酸化物もしくは金属窒化物であり、且つ、フィルム状もしくは粒状である発光ダイオードの製作方法。 - 合金フィルムの厚さは200オングストローム以下であることを特徴とする請求項20に記載の発光ダイオードの製作方法。
- (1)基板に第1の半導体層と発光層と第2の半導体層とを順番に作製する工程と、(2)第2の半導体層の上に、プラットフォームと一連の開口を有する透明絶縁層を作製する工程と、(3)プラットフォームと開口の箇所に透明導電フィルムを積層して中間層とする工程と、(4)開口の箇所における透明導電フィルムにオーミック接触層となる合金フィルムを積層する工程と、(5)プラットフォームと合金金属フィルムの上に金属反射層を作製する工程と、(6)金属反射層の表面に支持基板をボンディングして、支持基板を直接に第2の電極とし、もしくは第2の電極の支持体とする工程と、(7)基板を剥離させることにより発光エピタキシャル層を露出させてから、露出する発光エピタキシャル層の上に第1の電極を作製する工程と、が含まれており、
前記中間層は熱拡散率が前記オーミック接触層より低い材料を用い、且つ、
前記中間層は金属酸化物もしくは金属窒化物であり、且つ、フィルム状もしくは粒状である発光ダイオードの製作方法。
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PCT/CN2018/123265 WO2020132843A1 (zh) | 2018-12-24 | 2018-12-24 | 一种发光二极管及其制作方法 |
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EP (1) | EP3905344A4 (ja) |
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CN (2) | CN110710002B (ja) |
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CN113889559B (zh) * | 2020-07-02 | 2024-08-13 | 山东浪潮华光光电子股份有限公司 | 一种高亮度近红外发光二极管及其制备方法 |
CN113841261A (zh) * | 2021-06-10 | 2021-12-24 | 天津三安光电有限公司 | 发光二极管及制作方法 |
CN113299808B (zh) * | 2021-07-05 | 2022-05-17 | 扬州乾照光电有限公司 | 一种led芯片及其制备方法 |
CN113921674B (zh) * | 2021-09-30 | 2024-06-04 | 天津三安光电有限公司 | 发光二极管及发光装置 |
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CN116825925A (zh) | 2023-09-29 |
TWI695520B (zh) | 2020-06-01 |
CN110710002A (zh) | 2020-01-17 |
US20210226095A1 (en) | 2021-07-22 |
CN110710002B (zh) | 2023-06-30 |
TW202025514A (zh) | 2020-07-01 |
JP2022508781A (ja) | 2022-01-19 |
WO2020132843A1 (zh) | 2020-07-02 |
EP3905344A4 (en) | 2022-08-03 |
EP3905344A1 (en) | 2021-11-03 |
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