JP4048191B2 - 窒化物半導体発光素子及びその製造方法 - Google Patents
窒化物半導体発光素子及びその製造方法 Download PDFInfo
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- 150000004767 nitrides Chemical class 0.000 title claims description 160
- 239000004065 semiconductor Substances 0.000 title claims description 155
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000758 substrate Substances 0.000 claims description 70
- 238000000034 method Methods 0.000 claims description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000005530 etching Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- HJUGFYREWKUQJT-UHFFFAOYSA-N tetrabromomethane Chemical compound BrC(Br)(Br)Br HJUGFYREWKUQJT-UHFFFAOYSA-N 0.000 claims description 6
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 6
- 238000001039 wet etching Methods 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 claims 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims 1
- 239000013078 crystal Substances 0.000 description 26
- 229910052594 sapphire Inorganic materials 0.000 description 9
- 239000010980 sapphire Substances 0.000 description 9
- 230000006911 nucleation Effects 0.000 description 5
- 238000010899 nucleation Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 229910002704 AlGaN Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
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- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
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- H—ELECTRICITY
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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
- H01L33/005—Processes
- H01L33/0062—Processes for devices with an active region comprising only III-V compounds
- H01L33/0075—Processes for devices with an active region comprising only III-V compounds comprising nitride compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
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- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02387—Group 13/15 materials
- H01L21/02389—Nitrides
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- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02455—Group 13/15 materials
- H01L21/02458—Nitrides
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
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- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02639—Preparation of substrate for selective deposition
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- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02647—Lateral overgrowth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
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Description
32 バッファ層
33 誘電体パターン
34 側面成長窒化物半導体層
35 第1導電型窒化物半導体層
36 活性層
37 第2導電型窒化物半導体層
38 透明電極層
39a、39b 第1及び第2電極
Claims (20)
- AlNから成る多結晶基板と、
上記AlN基板上に形成され、ストライプ状または格子状の複数個の誘電体パターンと、
上記誘電体パターンの形成されたAlN基板上に側面成長法により形成された側面成長窒化物半導体層と、
上記窒化物半導体層上に形成された第1導電型窒化物半導体層と、
上記第1導電型窒化物半導体層上に形成された活性層と、
上記活性層上に形成された第2導電型窒化物半導体層とを含み、
上記AlN多結晶基板は所定の面方向を有する凹凸の形成された上面を有することを特徴とする窒化物半導体発光素子。 - 上記AlN基板上に形成されたバッファ層をさらに有することを特徴とする請求項1に記載の窒化物半導体発光素子。
- 上記バッファ層はAlxGa1−xN(0≦x≦1)の物質から成る低温核成長層であることを特徴とする請求項2に記載の窒化物半導体発光素子。
- 上記バッファ層は所定の面方向を有する凹凸の形成された上面を有することを特徴とする請求項2に記載の窒化物半導体発光素子。
- 上記誘電体パターンはSiO2またはSiNから成ることを特徴とする請求項1に記載の窒化物半導体発光素子。
- 上記側面成長窒化物半導体層は第1導電型不純物を含む窒化物半導体層であることを特徴とする請求項1に記載の窒化物半導体発光素子。
- 上記第1導電型窒化物半導体層はn型窒化物半導体層で、上記第2導電型窒化物半導体層はp型窒化物半導体層であることを特徴とする請求項1に記載の窒化物半導体発光素子。
- 上記基板はGa及びIn中少なくとも一つの元素をさらに含む(GaIn)AlN基板であることを特徴とする請求項1に記載の窒化物半導体発光素子。
- AlNから成る多結晶基板を用意する段階と、
上記AlN多結晶基板上に所定の面方向を有する凹凸が形成されるよう、上記AlN基板上面をエッチングする段階と、
上記AlN基板上にストライプ状または格子状の複数個の誘電体パターンを形成する段階と、
上記誘電体パターンの形成されたAlN基板上に側面成長法を利用して側面成長窒化物半導体層を形成する段階と、
上記窒化物半導体層上に第1導電型窒化物半導体層を形成する段階と、
上記第1導電型窒化物半導体層上に活性層を形成する段階と、
上記活性層上に第2導電型窒化物半導体層を形成する段階と、
を有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。 - 上記エッチングする段階はAlN基板上にNaOHを含むエッチング液を利用して湿式エッチングを適用する段階であることを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。
- 上記誘電体パターンを形成する段階前に、AlN基板上にバッファ層を形成する段階をさらに有することを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。
- 上記バッファ層はAlxGa1−xN(0≦x≦1)の物質から成る低温核成長層であることを特徴とする請求項11に記載の窒化物半導体発光素子の製造方法。
- 上記バッファ層上に所定の面方向を有する凹凸が形成されるよう、上記バッファ層上面をエッチングする段階をさらに有することを特徴とする請求項11に記載の窒化物半導体発光素子の製造方法。
- 上記エッチングする段階は、上記バッファ層上にNaOHを含むエッチング液を利用して湿式エッチングを適用する段階であることを特徴とする請求項13に記載の窒化物半導体発光素子の製造方法。
- 上記誘電体パターンはSiO2またはSiNから成ることを特徴とする請求項9に記載の窒化物半導体発光素子製造方法。
- 上記側面成長窒化物半導体層は第1導電型不純物を含んだ窒化物半導体層であることを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。
- 上記第1導電型窒化物半導体層はn型窒化物半導体層で、上記第2導電型窒化物半導体層はp型窒化物半導体層であることを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。
- 上記側面成長窒化物半導体層はAlを含んだ窒化物半導体層で、
上記側面成長窒化物半導体層を形成する段階は、
Cl系ガスまたはBr系ガスを注入しながら、側面成長法を利用して上記側面成長窒化物半導体層を形成する段階であることを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。 - 上記Br系ガスまたは上記Cl系ガスは、
Br2、Cl2、CBr4、CCl4、HBr及びHClから構成された群から選択された少なくとも一種を含むガスであることを特徴とする請求項18に記載の窒化物半導体発光素子の製造方法。 - 上記基板はGa及びIn中少なくとも一つの元素をさらに含む(GaIn)AlN基板であることを特徴とする請求項9に記載の窒化物半導体発光素子の製造方法。
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JP3971192B2 (ja) | 2002-01-11 | 2007-09-05 | 株式会社アルバック | Cvd装置 |
US7078735B2 (en) * | 2003-03-27 | 2006-07-18 | Sanyo Electric Co., Ltd. | Light-emitting device and illuminator |
KR20050023540A (ko) * | 2003-08-28 | 2005-03-10 | 서울옵토디바이스주식회사 | 발광소자 |
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US8664687B2 (en) | 2014-03-04 |
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