JP5586912B2 - 半導体基板の作製方法 - Google Patents
半導体基板の作製方法 Download PDFInfo
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- JP5586912B2 JP5586912B2 JP2009229316A JP2009229316A JP5586912B2 JP 5586912 B2 JP5586912 B2 JP 5586912B2 JP 2009229316 A JP2009229316 A JP 2009229316A JP 2009229316 A JP2009229316 A JP 2009229316A JP 5586912 B2 JP5586912 B2 JP 5586912B2
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- single crystal
- crystal semiconductor
- semiconductor layer
- layer
- substrate
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021342 tungsten silicide Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
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- 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
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
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- H—ELECTRICITY
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78603—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the insulating substrate or support
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
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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
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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
- H01L21/04—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
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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
- H01L21/70—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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76251—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques
- H01L21/76254—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques with separation/delamination along an ion implanted layer, e.g. Smart-cut, Unibond
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
- H01L21/82—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 to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/84—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 to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
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Description
(但し、式(1)において、σは以下の式(2)を満たす。)
(但し、式(2)において、σtはn層の単結晶半導体層のそれぞれにおいて反射マイクロ波の強度が極大となるエネルギー密度の標準偏差を示し、σeは、照射されるレーザ光のエネルギー密度の半導体基板毎の標準偏差を示す。)
本実施の形態では、半導体基板の作製方法における、単結晶半導体層へのレーザ照射工程について説明する。
本実施の形態では、実施の形態1で示したレーザ光の最適条件の検出方法を用いた半導体基板の作製方法について、図2を参照して説明する。
・加速電圧 10kV以上100kV以下(好ましくは30kV以上80kV以下)
・ドーズ量 1×1016ions/cm2以上4×1016ions/cm2以下
・ビーム電流密度 2μA/cm2以上(好ましくは5μA/cm2以上、より好ましくは10μA/cm2以上)
本実施の形態では、図3及至図5を参照して、上述の半導体基板を用いた半導体装置の作製方法について説明する。ここでは、半導体装置の一例として複数のトランジスタからなる半導体装置の作製方法について説明することとする。なお、以下において示すトランジスタを組み合わせて用いることで、様々な半導体装置を形成することができる。
本発明の一態様に係る半導体基板を用いてトランジスタ等の半導体装置を作製し、この半導体装置を用いてさまざまな電子機器を完成することができる。本発明の一態様に係る半導体基板に設けられた単結晶半導体層は高い平坦性を有するため、単結晶半導体層上に、薄く、且つ高い絶縁耐圧を有するゲート絶縁層を形成することができ、作製される半導体素子の移動度の向上、短チャネル効果抑制を実現することができる。すなわち、本発明の一態様に係る半導体基板を用いることで、電流駆動能力が高く、かつ信頼性の高い半導体素子を作製することが可能になり、結果として、最終製品としての電子機器をスループット良く、良好な品質で作製することが可能になる。本実施の形態では、図面を用いて具体的な電子機器への適用例を説明する。
a.膜厚110nm
b.膜厚92nm
c.膜厚73nm
d.膜厚58nm
e.膜厚51nm
102 脆化層
110 ベース基板
111 絶縁層
112 単結晶半導体層
113 レーザ光
118 単結晶半導体基板
120 単結晶半導体層
121 絶縁層
200 半導体基板
204 酸化シリコン膜
206 絶縁層
702 半導体層
704 半導体層
706 ゲート絶縁層
708 電極
710 不純物領域
712 不純物領域
714 サイドウォール
716 高濃度不純物領域
718 低濃度不純物領域
720 チャネル形成領域
722 高濃度不純物領域
724 低濃度不純物領域
726 チャネル形成領域
728 nチャネル型トランジスタ
730 pチャネル型トランジスタ
732 絶縁層
734 絶縁層
736 導電層
738 導電層
1001 筺体
1002 支持台
1003 表示部
1004 スピーカー部
1005 ビデオ入力端子
1011 表示部
1012 外部接続ポート
1013 リモコン受信部
1014 受像部
1015 操作キー
1021 本体
1023 表示部
1024 キーボード
1025 外部接続ポート
1026 ポインティングデバイス
1031 本体
1032 表示部
1033 スイッチ
1034 操作キー
1035 赤外線ポート
1041 表示部
1042 音声入力部
1043 音声出力部
1044 操作キー
1045 外部接続ポート
1100 携帯電子機器
1101 筐体
1102 筐体
1111 表示部
1112 スピーカー
1113 マイクロフォン
1114 操作キー
1115 ポインティングデバイス
1116 カメラ用レンズ
1117 外部接続端子
1121 キーボード
1122 外部メモリスロット
1123 カメラ用レンズ
1124 ライト
1125 イヤフォン端子
Claims (3)
- 第1乃至第n(n≧2)の単結晶半導体基板表面にイオンを照射して、前記第1乃至第nの単結晶半導体基板の表面から所定の深さに脆化層を形成し、
前記第1乃至第nの単結晶半導体基板と、第1乃至第nのベース基板とを、前記単結晶半導体基板または前記ベース基板の少なくとも一方に設けられた絶縁層を介して、それぞれ貼り合わせ、
熱処理によって、前記脆化層を境として前記第1乃至第nの単結晶半導体基板を分離することにより、前記第1乃至第nのベース基板上に第1乃至第nの単結晶半導体層をそれぞれ固定し、
前記第1の単結晶半導体層の複数の領域に対して、互いに異なる複数のエネルギー密度条件でレーザ光を照射し、
マイクロ波光導電減衰法によって、前記レーザ光を照射した第1の単結晶半導体層の反射マイクロ波の検出信号のピーク値を検出し、
前記ピーク値が極大となる前記レーザ光のエネルギー密度をE1 max として、
エネルギー密度Eが以下の式(1)を満たすレーザ光を前記第2乃至第nの単結晶半導体層へ照射することを特徴とする半導体基板の作製方法。
- 第1乃至第n(n≧2)の単結晶半導体基板表面にイオンを照射して、前記第1乃至第nの単結晶半導体基板の表面から所定の深さに脆化層を形成し、
前記第1乃至第nの単結晶半導体基板と、第1乃至第nのベース基板とを、前記単結晶半導体基板または前記ベース基板の少なくとも一方に設けられた絶縁層を介して、それぞれ貼り合わせ、
熱処理によって、前記脆化層を境として前記第1乃至第nの単結晶半導体基板を分離することにより、前記第1乃至第nのベース基板上に第1乃至第nの単結晶半導体層をそれぞれ固定し、
n層の単結晶半導体層の膜厚の中央値を有する前記第1の単結晶半導体層の複数の領域に対して、互いに異なる複数のエネルギー密度条件でレーザ光を照射し、
マイクロ波光導電減衰法によって、前記レーザ光を照射した第1の単結晶半導体層の反射マイクロ波の検出信号のピーク値を検出し、
前記ピーク値が極大となる前記レーザ光のエネルギー密度をE1 max として、
エネルギー密度Eが以下の式(3)を満たすレーザ光を前記第2乃至第nの単結晶半導体層へ照射することを特徴とする半導体基板の作製方法。
- 請求項1または請求項2において、
前記第2乃至第nの単結晶半導体層を部分溶融状態とするエネルギー密度で、前記レーザ光を照射することを特徴とする半導体基板の作製方法。
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JP5798669B2 (ja) * | 2013-12-03 | 2015-10-21 | 株式会社神戸製鋼所 | 酸化物半導体薄膜の評価方法、及び酸化物半導体薄膜の品質管理方法、並びに上記評価方法に用いられる評価装置 |
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2009
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SG160310A1 (en) | 2010-04-29 |
US20100084734A1 (en) | 2010-04-08 |
KR101581728B1 (ko) | 2016-01-04 |
US8377804B2 (en) | 2013-02-19 |
JP2010109361A (ja) | 2010-05-13 |
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