JP6155310B2 - 半導体発光デバイスのための接点 - Google Patents
半導体発光デバイスのための接点 Download PDFInfo
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- JP6155310B2 JP6155310B2 JP2015187919A JP2015187919A JP6155310B2 JP 6155310 B2 JP6155310 B2 JP 6155310B2 JP 2015187919 A JP2015187919 A JP 2015187919A JP 2015187919 A JP2015187919 A JP 2015187919A JP 6155310 B2 JP6155310 B2 JP 6155310B2
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- 239000004065 semiconductor Substances 0.000 title claims description 17
- 239000004020 conductor Substances 0.000 claims description 34
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 26
- 229910052709 silver Inorganic materials 0.000 claims description 26
- 239000004332 silver Substances 0.000 claims description 26
- 239000011810 insulating material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000000151 deposition Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 230000002776 aggregation Effects 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 117
- 239000000463 material Substances 0.000 description 35
- 239000000758 substrate Substances 0.000 description 13
- 238000000605 extraction Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 4
- 239000010980 sapphire Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- -1 ITO Chemical compound 0.000 description 1
- 229910005855 NiOx Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 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
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 229910002059 quaternary alloy Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- 238000001039 wet etching Methods 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
- H01L33/005—Processes
- H01L33/0062—Processes for devices with an active region comprising only III-V compounds
- H01L33/0066—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound
- H01L33/007—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound comprising nitride compounds
-
- 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
- H01L33/36—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
- H01L33/42—Transparent materials
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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
- H01L33/36—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
-
- 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
- H01L33/36—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
-
- 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
- H01L33/36—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
- H01L33/405—Reflective materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04252—Electrodes, e.g. characterised by the structure characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04254—Electrodes, e.g. characterised by the structure characterised by the shape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0016—Processes relating to electrodes
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Led Devices (AREA)
Description
上記の実施形態につき以下の付記を残しておく。
(付記1)
n型領域とp型領域との間に配置されたIII族窒化物発光層を有する半導体構造体と、
前記p型領域上に配置された接点とを有し、
前記接点は、
前記p型領域と直接接触する透明導電材料と、
反射金属層と、
前記透明導電層と前記反射金属層との間に配置された透明絶縁材料と、
前記透明絶縁材料内の複数の開口部とを有し、
前記透明導電材料は、前記複数の開口部において、前記反射金属層と直接接触する、デバイス。
(付記2)
前記透明導電材料は、銀及びアルミニウムのうち一方である、付記1に記載のデバイス。
(付記3)
前記透明導電材料は、前記接点が配置された前記p型領域の表面の面積の10%未満を占める複数の個別の領域を有する、付記2に記載のデバイス。
(付記4)
前記透明導電材料は、0.5〜10ナノメートルの厚さをもつ、付記1に記載のデバイス。
(付記5)
前記透明導電材料は、酸化物であり、30〜1000ナノメートルの厚さをもつ、付記1に記載のデバイス。
(付記6)
前記透明導電材料は、インジウムスズ酸化物、酸化ニッケル、ZnOのうち1つである、付記1に記載のデバイス。
(付記7)
前記透明絶縁材料は、SiOx、SiNx、MgF2、Al2O3のうち1つである、付記1に記載のデバイス。
(付記8)
前記透明絶縁材料は、200〜500nmの厚さをもつ、付記1に記載のデバイス。
(付記9)
前記開口部は、2〜15ミクロンの幅をもつ、付記1に記載のデバイス。
(付記10)
前記開口部は、20〜200ミクロン空けられる、付記1に記載のデバイス。
(付記11)
前記透明絶縁材料は、マルチレイヤスタックを有する、付記1に記載のデバイス。
(付記12)
前記マルチレイヤスタックにおける第1の層は、前記透明導電材料と直接接触し、
前記マルチレイヤスタックにおける第2の層は、前記反射金属層と直接接触し、
前記第1の層と前記第2の層との間に配置された第3の層は、前記第1の層及び前記第2の層よりも低い屈折率をもつ、付記11に記載のデバイス。
(付記13)
前記反射金属層は、銀を有する、付記1に記載のデバイス。
(付記14)
前記透明導電材料と直接接触する前記p型領域の表面は粗い、付記1に記載のデバイス。
(付記15)
前記開口部が前記透明導電材料に及ぶ、付記1に記載のデバイス。
(付記16)
前記開口部は、前記反射金属層の上面の法線に対して5〜50度の側壁角度をもつ、付記1に記載のデバイス。
(付記17)
前記透明絶縁材料及び前記透明導電材料のうち少なくとも一方が多孔質である、付記1に記載のデバイス。
24 発光領域
26 p型領域
28 薄型導電層
30 低損失材料
32 開口部
Claims (18)
- n型領域とp型領域との間に配置された発光層を含む半導体構造体を形成するステップと、
前記p型領域の表面上に導電材料を形成するステップであり、前記導電材料は、前記p型領域を露出する領域を含み、前記導電材料を形成するステップは、
前記p型領域の表面上に薄く、連続的で、平面的な導電材料の層を蒸着する段階と、
前記薄く、連続的で、平面的な導電材料の層を焼き戻して、導電材料の個別の領域のネットワークを形成する段階と、
を含む、ステップと、
前記導電材料の上に絶縁材料を形成するステップと、
前記導電材料の領域を露出するように、前記絶縁材料において複数の開口部を形成するステップと、
前記複数の開口部の中まで延在する金属層を形成するステップであり、前記金属層は、前記複数の開口部において、前記導電材料の露出した部分と直接接触する、ステップと、
を含む、方法。 - 前記方法は、
前記p型領域の上に粗い表面を結果として生じる条件の下で、前記p型領域を成長させるステップ、を含む、
請求項1に記載の方法。 - 前記方法は、
前記絶縁材料を斜角堆積によって形成するステップ、を含む、
請求項1に記載の方法。 - 前記方法は、
前記絶縁材料を多層構造として形成するステップ、を含む、
請求項1に記載の方法。 - 前記多層構造は、
導電層と直接接触する第1層と、前記金属層と直接接触する第2層と、前記第1層と前記第2層との間に配置された第3層と、を含み、
前記第3層は、前記第1層と前記第2層のうち少なくとも一つの屈折率とは異なる屈折率を有する、
請求項4に記載の方法。 - 前記方法は、
前記p型領域の表面に対して5度と50度との間の側壁角度をもつ傾斜した壁を伴う前記複数の開口部を形成するステップ、を含む、
請求項1に記載の方法。 - 前記方法は、
前記導電材料と前記複数の個別の領域を形成するために、前記p型領域の表面上に蒸着された銀の層を焼き戻しするステップ、を含む、
請求項1に記載の方法。 - n型領域とp型領域との間に配置された発光層を含む半導体構造体と、
前記p型領域の表面上で、前記発光層とは反対に配置された接点と、を含み、
前記接点は、
前記p型領域と直接接触する導電材料と、
前記発光層によって発せられる光を反射する金属層と、
前記導電材料と前記金属層との間に配置された絶縁材料と、
前記絶縁材料における複数の開口部と、
を含み、
前記金属層は、前記複数の開口部の中まで延在し、
前記導電材料は、前記複数の開口部において、前記金属層と直接接触し、かつ、
前記導電材料は、前記p型領域を露出する領域を含み、
前記導電材料は、前記p型領域の表面上において、薄く、連続的で、平面的な、個別の領域のネットワークを形成している、
デバイス。 - 前記導電材料は、前記p型領域の表面の10%未満をカバーする、
請求項8に記載のデバイス。 - 前記導電材料は、銀を含む、
請求項8に記載のデバイス。 - 前記個別の領域にうち少なくとも2つは、相互に1ミクロン未満離れている、
請求項8に記載のデバイス。 - 前記個別の領域は、前記導電材料の凝集を含む、
請求項8に記載のデバイス。 - 前記p型領域の表面は、粗い、
請求項8に記載のデバイス。 - 前記絶縁材料は、複数の個別の層を含む、
請求項8に記載のデバイス。 - 前記金属層は、複数の個別の導電層を含む、
請求項8に記載のデバイス。 - 前記複数の個別の導電層は、銀の第1層、銀の第2層、および、前記第1層と前記第2層との間に配置された少なくとも一つのニッケルの第3層、を含む、
請求項15に記載のデバイス。 - 前記複数の個別の導電層は、少なくとも一つのTiWNの第4層、を含む、
請求項16に記載のデバイス。 - 前記複数の開口部は、前記p型領域の表面の法線に対して5度と50度との間の側壁角度をもつ傾斜した壁を伴う開口を含む、
請求項8に記載のデバイス。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/491,976 US20100327300A1 (en) | 2009-06-25 | 2009-06-25 | Contact for a semiconductor light emitting device |
US12/491,976 | 2009-06-25 |
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JP2012516887A Division JP2012531733A (ja) | 2009-06-25 | 2010-05-21 | 半導体発光デバイスのための接点 |
Publications (2)
Publication Number | Publication Date |
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JP2016015517A JP2016015517A (ja) | 2016-01-28 |
JP6155310B2 true JP6155310B2 (ja) | 2017-06-28 |
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JP2012516887A Pending JP2012531733A (ja) | 2009-06-25 | 2010-05-21 | 半導体発光デバイスのための接点 |
JP2015187919A Active JP6155310B2 (ja) | 2009-06-25 | 2015-09-25 | 半導体発光デバイスのための接点 |
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JP2012516887A Pending JP2012531733A (ja) | 2009-06-25 | 2010-05-21 | 半導体発光デバイスのための接点 |
Country Status (7)
Country | Link |
---|---|
US (2) | US20100327300A1 (ja) |
EP (1) | EP2446486B1 (ja) |
JP (2) | JP2012531733A (ja) |
KR (1) | KR20120101324A (ja) |
CN (2) | CN106057987B (ja) |
TW (1) | TWI575773B (ja) |
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Publication number | Publication date |
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US20120199863A1 (en) | 2012-08-09 |
JP2016015517A (ja) | 2016-01-28 |
US11695099B2 (en) | 2023-07-04 |
EP2446486B1 (en) | 2016-09-28 |
WO2010150114A3 (en) | 2011-02-17 |
CN102804417B (zh) | 2016-08-03 |
CN106057987B (zh) | 2020-06-16 |
EP2446486A2 (en) | 2012-05-02 |
KR20120101324A (ko) | 2012-09-13 |
CN102804417A (zh) | 2012-11-28 |
CN106057987A (zh) | 2016-10-26 |
WO2010150114A2 (en) | 2010-12-29 |
US20100327300A1 (en) | 2010-12-30 |
JP2012531733A (ja) | 2012-12-10 |
TWI575773B (zh) | 2017-03-21 |
TW201108465A (en) | 2011-03-01 |
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