JP2019192674A - Iii族窒化物半導体基板及びその製造方法 - Google Patents
Iii族窒化物半導体基板及びその製造方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 80
- 239000004065 semiconductor Substances 0.000 title claims abstract description 42
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000013078 crystal Substances 0.000 claims abstract description 96
- 238000000034 method Methods 0.000 claims description 46
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 91
- 229910002601 GaN Inorganic materials 0.000 description 22
- 238000003776 cleavage reaction Methods 0.000 description 20
- 230000007017 scission Effects 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 13
- 238000005253 cladding Methods 0.000 description 13
- 238000005498 polishing Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/40—AIIIBV compounds wherein A is B, Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C30B29/403—AIII-nitrides
- C30B29/406—Gallium nitride
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
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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
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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Abstract
Description
{0001}面からなる主面を有し、所定の結晶方位を基準にへき開されるIII族窒化物半導体基板であり、平面視したときに前記主面の端部に位置する第1方位識別線と、前記所定の結晶方位に対する角度ずれが、前記第1方位識別線と比べて小である第2方位識別線と、前記第2方位識別線を識別するためのしるしと、を有するIII族窒化物半導体基板。
III族窒化物半導体からなり、かつ{0001}面からなる主面を有する基板を準備する工程と、前記基板の主面を平面視したときの端部に、第1方位識別線をレーザで形成する工程と、前記第1方位識別線の、前記基板の所定の結晶方位に対する角度ずれを測定する工程と、前記第1方位識別線よりも、前記基板の前記所定の結晶方位に対する角度ずれが小となるように第2方位識別線をレーザで形成する工程と、前記第2方位識別線を識別するためのしるしを付与する工程と、を備えた、III族窒化物半導体基板の製造方法。
レーザ照射条件
レーザ波長 : 532nm
パルス : 15ピコ秒
レーザ出力 : 1.00W
周波数 : 250kHz
走査速度 : 125mm/sec
上述のGaN基板を用いる場合、デバイス層41の形成工程後、しるし14に基づき、第2方位識別線12を特定する。そして、特定した第2方位識別線12と、平行になるように、顕微鏡等を活用してマスクパターンの角度を合わせた後、露光装置を使って、GaN基板上に、チップレイアウトを形成する。
12 第2方位識別線
13 第1方位識別線
14 第2方位識別線を示すしるし
16 へき開方向
18、27、76 オリエンテーションフラット
20 ノッチ
21 ガリウム(Ga)原子
23 窒素(N)原子
25 GaN結晶のへき開方向
28 インデックスフラット
29 しるし
31 活性層
32 n型クラッド層
33 p型クラッド層
34 p側電極
35 n側電極
36、37反射鏡
38 レーザ光
39 LDの幅
40 LDの長さ
41 デバイス層
42 窓
51 LDのチップレイアウト
52 LDチップ
53 p型クラッド層の凸条
54、64、65 バー
55 バー端面
56 LD
60 スクライブを入れる位置
63 LDチップどうしの境界
70、73、75 インゴット
71、74 種基板
78、79、80 基板
82、83 GaN基板
84 レーザ照射装置
85 レーザ光
86 XRD装置の吸着ステージ
87 吸着ステージ上の基準線
88 結晶方位[1−100]を測定する入射X線
89 結晶方位[1−100]の回折X線
90 XRD装置の基準角度を示す仮想線
91 回折スペクトル
92 [1−100]と方位識別線のずれ量
93 方位識別線
94 GaN基板
Claims (5)
- {0001}面からなる主面を有し、所定の結晶方位を基準にへき開されるIII族窒化物半導体基板であり、
平面視したときに前記主面の端部に位置する第1方位識別線と、
前記所定の結晶方位に対する角度ずれが、前記第1方位識別線と比べて小である第2方位識別線と、
前記第2方位識別線を識別するためのしるしと、
を有するIII族窒化物半導体基板。 - 前記第2方位識別線とは別の位置に、オリエンテーションフラット、またはノッチをさらに有する、請求項1に記載のIII族窒化物半導体基板。
- III族窒化物半導体からなり、かつ{0001}面からなる主面を有する基板を準備する工程と、
前記基板の主面を平面視したときの端部に、第1方位識別線をレーザで形成する工程と、
前記第1方位識別線の、前記基板の所定の結晶方位に対する角度ずれを測定する工程と、
前記第1方位識別線よりも、前記基板の前記所定の結晶方位に対する角度ずれが小となるように第2方位識別線をレーザで形成する工程と、
前記第2方位識別線を識別するためのしるしを付与する工程と、
を備えた、III族窒化物半導体基板の製造方法。 - 前記III族窒化物半導体基板に、オリエンテーションフラットまたはノッチを形成する工程をさらに備え、
前記第2方位識別線を、前記オリエンテーションフラット及び前記ノッチと異なる位置に形成する、
請求項3に記載のIII族窒化物半導体基板の製造方法。 - 前記第1方位識別線、前記第2方位識別線、および前記しるしを形成するレーザの波長が532nmである、
請求項3または4に記載のIII族窒化物半導体基板の製造方法。
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JP2018079954A JP6675085B2 (ja) | 2018-04-18 | 2018-04-18 | Iii族窒化物半導体基板及びその製造方法 |
CN201910026152.1A CN110391585A (zh) | 2018-04-18 | 2019-01-10 | Iii族氮化物半导体基板及其制造方法 |
US16/292,414 US20190326402A1 (en) | 2018-04-18 | 2019-03-05 | Group iii nitride semiconductor substrate and method for manufacturing same |
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JP2018079954A JP6675085B2 (ja) | 2018-04-18 | 2018-04-18 | Iii族窒化物半導体基板及びその製造方法 |
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Cited By (1)
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JP2022145247A (ja) * | 2021-03-19 | 2022-10-03 | Dowaエレクトロニクス株式会社 | GaAsウエハの製造方法およびGaAsウエハ群 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004335645A (ja) * | 2003-05-06 | 2004-11-25 | Sumitomo Electric Ind Ltd | GaN基板 |
JP2006290697A (ja) * | 2005-04-14 | 2006-10-26 | Hitachi Cable Ltd | 窒化物半導体基板及びその製造方法 |
JP2015202986A (ja) * | 2014-04-14 | 2015-11-16 | 三菱化学株式会社 | 窒化物半導体基板、基板ロットおよびオリエンテーション・フラットの形成方法 |
JP2018024538A (ja) * | 2016-08-08 | 2018-02-15 | 三菱ケミカル株式会社 | GaN単結晶およびGaN単結晶製造方法 |
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JP2006339431A (ja) * | 2005-06-02 | 2006-12-14 | Hitachi Cable Ltd | 窒化物半導体基板の加工方法 |
EP1806770A4 (en) * | 2005-07-21 | 2009-02-25 | Sumitomo Electric Industries | GALLIUMNITRIDWAFER |
JP2007073761A (ja) * | 2005-09-07 | 2007-03-22 | Sumitomo Electric Ind Ltd | 窒化物半導体基板及び窒化物半導体基板の加工方法 |
KR20070042594A (ko) * | 2005-10-19 | 2007-04-24 | 삼성코닝 주식회사 | 편평한 측면을 갖는 a면 질화물 반도체 단결정 기판 |
CN107680918B (zh) * | 2012-09-19 | 2021-02-23 | 应用材料公司 | 接合基板的方法 |
JP6315579B2 (ja) * | 2014-07-28 | 2018-04-25 | 昭和電工株式会社 | SiCエピタキシャルウェハの製造方法 |
JP6425606B2 (ja) * | 2015-04-06 | 2018-11-21 | 株式会社ディスコ | ウエーハの生成方法 |
JP6690983B2 (ja) * | 2016-04-11 | 2020-04-28 | 株式会社ディスコ | ウエーハ生成方法及び実第2のオリエンテーションフラット検出方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004335645A (ja) * | 2003-05-06 | 2004-11-25 | Sumitomo Electric Ind Ltd | GaN基板 |
JP2006290697A (ja) * | 2005-04-14 | 2006-10-26 | Hitachi Cable Ltd | 窒化物半導体基板及びその製造方法 |
JP2015202986A (ja) * | 2014-04-14 | 2015-11-16 | 三菱化学株式会社 | 窒化物半導体基板、基板ロットおよびオリエンテーション・フラットの形成方法 |
JP2018024538A (ja) * | 2016-08-08 | 2018-02-15 | 三菱ケミカル株式会社 | GaN単結晶およびGaN単結晶製造方法 |
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JP2022145247A (ja) * | 2021-03-19 | 2022-10-03 | Dowaエレクトロニクス株式会社 | GaAsウエハの製造方法およびGaAsウエハ群 |
JP7146988B1 (ja) | 2021-03-19 | 2022-10-04 | Dowaエレクトロニクス株式会社 | GaAsウエハの製造方法およびGaAsウエハ群 |
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