JP2007173465A - 窒化物半導体発光素子の製造方法 - Google Patents
窒化物半導体発光素子の製造方法 Download PDFInfo
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- 150000004767 nitrides Chemical class 0.000 title claims abstract description 114
- 239000004065 semiconductor Substances 0.000 title claims abstract description 110
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 68
- 238000005530 etching Methods 0.000 claims abstract description 39
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims description 83
- 229910052594 sapphire Inorganic materials 0.000 claims description 50
- 239000010980 sapphire Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 22
- 238000001312 dry etching Methods 0.000 claims description 16
- 239000000460 chlorine Substances 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 230000006866 deterioration Effects 0.000 abstract description 4
- 229910002601 GaN Inorganic materials 0.000 description 50
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 50
- 239000007789 gas Substances 0.000 description 17
- 230000004927 fusion Effects 0.000 description 11
- 229910052737 gold Inorganic materials 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052733 gallium Inorganic materials 0.000 description 4
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000004549 pulsed laser deposition Methods 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- AJGDITRVXRPLBY-UHFFFAOYSA-N aluminum indium Chemical compound [Al].[In] AJGDITRVXRPLBY-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- H01L33/0095—Post-treatment of devices, e.g. annealing, recrystallisation or short-circuit elimination
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
-
- 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
- H01L33/26—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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
- Semiconductor Lasers (AREA)
Abstract
【解決手段】n型窒化物半導体層2には、p側から見て活性層3を越えた領域に段差Aが形成されている。この段差Aの部分まで、保護絶縁膜6によりn型窒化物半導体層2の一部、活性層3、p型窒化物半導体層4、p電極5の側面とp電極5の上側一部にかけて覆われている。チップ側面を保護絶縁膜6で覆う構造とすることで、チップ分離用やレーザーリフトオフ用の分離溝をエッチングにより形成する場合、活性層3等が、長時間エッチングガスに曝されることがない。
【選択図】 図1
Description
粗面加工は、図13の製造工程において、n電極1を形成する前に、n電極1を積層する領域部分をSOG、SiN等のマスクで覆い、KOHと波長365nmを含むUV光を用いてエッチングを行い、n型窒化物半導体層2の露出面に凹凸を形成する。次に、マスクを剥離してn電極1を形成する。
2 n型窒化物半導体層
3 活性層
4 p型窒化物半導体層
5 p電極
6 反射膜
7 導電性融着層
8 支持基板
9 保護絶縁膜
Claims (5)
- 少なくとも、n型窒化物半導体層、発光領域、p型窒化物半導体層とを順に備えたGaNを含む窒化物積層構造体が成長用基板上に積層され、前記窒化物積層構造体に分離溝を形成する窒化物半導体素子の製造方法において、
前記n型窒化物半導体層から前記発光領域を越えるまでの第1分離溝については塩素を含むガスによるドライエッチングを用いて形成し、
前記第1分離溝から続けて前記成長用基板に達するまで形成される第2分離溝は、前記成長用基板には透明で、前記窒化物積層構造体では吸収する波長を持つレーザを用いて形成することを特徴とする窒化物半導体発光素子の製造方法。 - 前記第1分離溝を形成した後、ドライエッチングによる前記窒化物積層構造体側面のダメージを電気化学エッチングにより除去することを特徴とする請求項1記載の窒化物半導体発光素子の製造方法。
- 前記第1分離溝を形成した後、該第1分離溝に沿って該窒化物積層構造体の側面に保護絶縁膜を形成し、
その後に前記第2分離溝を形成することを特徴とする請求項1又は請求項2のいずれか1項に記載の窒化物半導体発光素子の製造方法。 - 前記第2分離溝の形成に用いるレーザは、波長が360nm以下であることを特徴とする請求項1〜請求項3のいずれか1項に記載の窒化物半導体発光素子の製造方法。
- 前記第2分離溝の形成に用いるレーザは、KrF、XeCl、YAG4倍波、Ti−サファイア3倍波のいずれかであることを特徴とする請求項4記載の窒化物半導体発光素子の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005368157A JP2007173465A (ja) | 2005-12-21 | 2005-12-21 | 窒化物半導体発光素子の製造方法 |
US12/086,883 US20090029499A1 (en) | 2005-12-21 | 2006-12-20 | Method for Manufacturing Nitride Semiconductor Light Emitting Element |
PCT/JP2006/325401 WO2007072871A1 (ja) | 2005-12-21 | 2006-12-20 | 窒化物半導体発光素子の製造方法 |
TW095148216A TW200739957A (en) | 2005-12-21 | 2006-12-21 | Manufacturing method of nitride semiconductor light-emitting element |
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JP2005368157A JP2007173465A (ja) | 2005-12-21 | 2005-12-21 | 窒化物半導体発光素子の製造方法 |
Publications (1)
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JP2007173465A true JP2007173465A (ja) | 2007-07-05 |
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JP2005368157A Pending JP2007173465A (ja) | 2005-12-21 | 2005-12-21 | 窒化物半導体発光素子の製造方法 |
Country Status (4)
Country | Link |
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US (1) | US20090029499A1 (ja) |
JP (1) | JP2007173465A (ja) |
TW (1) | TW200739957A (ja) |
WO (1) | WO2007072871A1 (ja) |
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JP2009200178A (ja) * | 2008-02-20 | 2009-09-03 | Hitachi Cable Ltd | 半導体発光素子 |
JP2010087092A (ja) * | 2008-09-30 | 2010-04-15 | Toyoda Gosei Co Ltd | Iii族窒化物系化合物半導体素子の製造方法 |
JP2011035184A (ja) * | 2009-08-03 | 2011-02-17 | Toshiba Corp | 半導体発光装置の製造方法 |
JP2011071273A (ja) * | 2009-09-25 | 2011-04-07 | Toshiba Corp | 半導体発光装置の製造方法及び半導体発光装置 |
JP2011091446A (ja) * | 2011-02-04 | 2011-05-06 | Toshiba Corp | 半導体発光装置の製造方法 |
JP2011101000A (ja) * | 2009-11-06 | 2011-05-19 | Ultratech Inc | GaNLED用レーザスパイクアニール |
JP2011151191A (ja) * | 2010-01-21 | 2011-08-04 | Stanley Electric Co Ltd | 半導体発光装置の製造方法 |
JP2011187631A (ja) * | 2010-03-08 | 2011-09-22 | Stanley Electric Co Ltd | 半導体発光素子の製造方法及び半導体発光素子 |
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2005
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-
2006
- 2006-12-20 US US12/086,883 patent/US20090029499A1/en not_active Abandoned
- 2006-12-20 WO PCT/JP2006/325401 patent/WO2007072871A1/ja active Application Filing
- 2006-12-21 TW TW095148216A patent/TW200739957A/zh unknown
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US20090029499A1 (en) | 2009-01-29 |
TW200739957A (en) | 2007-10-16 |
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