JP2017057103A - 窒化ガリウム基板の生成方法 - Google Patents
窒化ガリウム基板の生成方法 Download PDFInfo
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- JP2017057103A JP2017057103A JP2015181950A JP2015181950A JP2017057103A JP 2017057103 A JP2017057103 A JP 2017057103A JP 2015181950 A JP2015181950 A JP 2015181950A JP 2015181950 A JP2015181950 A JP 2015181950A JP 2017057103 A JP2017057103 A JP 2017057103A
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title claims abstract description 173
- 229910002601 GaN Inorganic materials 0.000 title claims abstract description 86
- 239000000758 substrate Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 9
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000155 melt Substances 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0011—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing with preliminary treatment, e.g. weakening by scoring
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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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
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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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/185—Joining of semiconductor bodies for junction formation
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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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/268—Bombardment with radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation
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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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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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
- H01L21/70—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/102—Material of the semiconductor or solid state bodies
- H01L2924/1025—Semiconducting materials
- H01L2924/1026—Compound semiconductors
- H01L2924/1032—III-V
- H01L2924/1033—Gallium nitride [GaN]
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
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- Toxicology (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
窒化ガリウム(GaN)に対して透過性を有する波長のレーザー光線の集光点を該第1の面から窒化ガリウム(GaN)インゴットの内部に位置付け照射し、窒化ガリウム(GaN)を破壊してガリウム(Ga)と窒素(N)とを析出させた界面を形成する界面形成工程と、
窒化ガリウム(GaN)インゴットの該第1の面に第1の保持部材を貼着するとともに、該第2の面に第2の保持部材を貼着する保持部材貼着工程と、
窒化ガリウム(GaN)インゴットをガリウム(Ga)が溶融する温度に加熱するとともに、該第1の保持部材と該第2の保持部材を互いに離反する方向に移動することにより窒化ガリウム(GaN)インゴットを該界面から分離して窒化ガリウム基板を生成する窒化ガリウム基板生成工程と、を含む、
ことを特徴とする窒化ガリウム基板の生成方法が提供される。
上記保持部材貼着工程は、窒化ガリウム(GaN)インゴットをガリウム(Ga)が溶融する温度より高い温度で溶融するワックスを用いて第1の面に第1の保持部材を貼着するとともに第2の面に第2の保持部材を貼着する。
上記界面に析出され窒化ガリウム基板形成工程によって分離された窒化ガリウム基板の分離面に形成されているガリウム(Ga)面を研削して除去する研削工程を実施する。
なお、上記界面形成工程は、集光器322を窒化ガリウム(GaN)インゴット2の外周部に位置付け、チャックテーブル31を回転しつつ集光器322を中心に向けて移動し、図4で示すように窒化ガリウム(GaN)インゴット2の内部にパルスレーザー光線を渦巻き状に照射することにより、GaNを破壊してガリウム(Ga)と窒素(N)とを析出させた界面24を形成してもよい。
波長 :532nm
繰り返し周波数 :15kHz
平均出力 :0.02W
パルス幅 :800ps
集光スポット径 :10μm
加工送り速度 :45mm/秒
なお、保持部材貼着工程における第2の保持部材5は、上記界面形成工程を実施する前に窒化ガリウム(GaN)インゴット2の第2の面22に貼着してもよい。
20:窒化ガリウム基板
3:レーザー加工装置
31:レーザー加工装置のチャックテーブル
32:レーザー光線照射手段
322:集光器
4:第1の保持部材
5:第2の保持部材
6:ワックス
7:研削装置
71:研削装置のチャックテーブル
72:研削手段
8:剥離装置
81:保持テーブル
82:吸引パッド
Claims (4)
- 第1の面と該第1の面と反対側の第2の面を有する窒化ガリウム(GaN)インゴットを複数の窒化ガリウム基板に生成する窒化ガリウム基板の生成方法であって、
窒化ガリウム(GaN)に対して透過性を有する波長のレーザー光線の集光点を該第1の面から窒化ガリウム(GaN)インゴットの内部に位置付け照射し、窒化ガリウム(GaN)を破壊してガリウム(Ga)と窒素(N)とを析出させた界面を形成する界面形成工程と、
窒化ガリウム(GaN)インゴットの該第1の面に第1の保持部材を貼着するとともに、該第2の面に第2の保持部材を貼着する保持部材貼着工程と、
窒化ガリウム(GaN)インゴットをガリウム(Ga)が溶融する温度に加熱するとともに、該第1の保持部材と該第2の保持部材を互いに離反する方向に移動することにより窒化ガリウム(GaN)インゴットを該界面から分離して窒化ガリウム基板を生成する窒化ガリウム基板生成工程と、を含む、
ことを特徴とする窒化ガリウム基板の生成方法。 - 該保持部材貼着工程における該第2の保持部材は、上記界面形成工程を実施する前に該第2の面に貼着する、請求項1記載の窒化ガリウム基板の生成方法。
- 該保持部材貼着工程は、該窒化ガリウム(GaN)インゴットをガリウム(Ga)が溶融する温度より高い温度で溶融するワックスを用いて該第1の面に該第1の保持部材を貼着するとともに該第2の面に該第2の保持部材を貼着する、請求項1又は2記載の窒化ガリウム基板の生成方法。
- 該界面に析出され窒化ガリウム基板形成工程によって分離された窒化ガリウム基板の分離面に形成されているガリウム(Ga)面を研削して除去する研削工程を実施する、請求項1記載の窒化ガリウム基板の生成方法。
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JP2015181950A JP6633326B2 (ja) | 2015-09-15 | 2015-09-15 | 窒化ガリウム基板の生成方法 |
TW105125168A TWI689367B (zh) | 2015-09-15 | 2016-08-08 | 氮化鎵基板之生成方法 |
KR1020160113660A KR102428702B1 (ko) | 2015-09-15 | 2016-09-05 | 질화갈륨 기판의 생성 방법 |
CN201610819653.1A CN107053498A (zh) | 2015-09-15 | 2016-09-13 | 氮化镓基板的生成方法 |
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WO2019044142A1 (ja) | 2017-09-01 | 2019-03-07 | 国立大学法人名古屋大学 | 基板製造方法 |
US10388526B1 (en) | 2018-04-20 | 2019-08-20 | Semiconductor Components Industries, Llc | Semiconductor wafer thinning systems and related methods |
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US10611052B1 (en) | 2019-05-17 | 2020-04-07 | Cree, Inc. | Silicon carbide wafers with relaxed positive bow and related methods |
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JP6633326B2 (ja) | 2020-01-22 |
TW201713448A (zh) | 2017-04-16 |
CN107053498A (zh) | 2017-08-18 |
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