JP2023089164A - 半導体ウェハの製造方法 - Google Patents
半導体ウェハの製造方法 Download PDFInfo
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 3
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- 239000010931 gold Substances 0.000 claims abstract description 3
- 229910052741 iridium Inorganic materials 0.000 claims abstract description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims abstract description 3
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- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
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- 229910052796 boron Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
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- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
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- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- 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
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Abstract
Description
図1は、半導体ウェハの外観模式図であり、図2は、半導体ウェハの構造例を示す上面模式図であり、半導体ウェハのX軸とX軸に直交するY軸とを含むX-Y平面の一部を示す。図3は、半導体ウェハの構造例を示す断面模式図であり、X軸とX軸およびY軸に直交するZ軸とを含むX-Z断面の一部を示す。
半導体ウェハ1は、例えば触媒アシストエッチング(Metal-assisted Chemical Etching:MACE)を用いて製造することができる。MACEは、基板の表面に触媒層を形成した基板を薬液に浸漬することで、触媒層に接する領域のみを略垂直にエッチングする技術である。
図9は、半導体ウェハ1の他の製造方法例を説明するための図である。本例では、半導体ウェハ1の(110)面に沿って表面10aを形成するとともに、表面10aの上にマスク層3を形成し、半導体ウェハ1の(111)面に沿って半導体ウェハ1をエッチングすることにより溝11を形成する。
図10ないし図14は、半導体ウェハ1の他の構造例を示す断面模式図である。なお、上記半導体ウェハ1の説明と同じ部分については上記説明を適宜援用することができる。
図15は、半導体ウェハ1を用いた半導体装置の構造例を示す断面模式図である。図15に示す半導体装置は、半導体ウェハ1に設けられた膜5を具備する。膜5は、例えばCVD装置等の成膜装置を用いて表面10aの上に形成される。膜5は、例えば成膜評価するための下地膜、例えばエッチングするためのエッチング対象膜として機能する。膜5の厚さは、用途に応じて設定される。なお、膜5は積層膜であってもよく、図13に示す保護膜4b上に形成してもよい。
実施形態の半導体ウェハの使用方法例として、半導体装置の製造工程において上記半導体ウェハ1をダミーウェハとして使用する例について図16ないし図19を用いて説明する。
Claims (8)
- 金、銀、白金、イリジウム、およびパラジウムからなる群より選ばれる少なくとも一つの貴金属元素を含む触媒層を半導体基板の表面に形成し、
前記触媒層が形成された前記半導体基板を第1の薬液に浸漬させ、前記半導体基板を部分的にエッチングすることにより前記表面に溝を形成し、
前記表面から前記触媒層を除去する、半導体ウェハの製造方法。 - 前記半導体基板は、シリコンを含む、請求項1に記載の半導体ウェハの製造方法。
- 前記半導体基板は、シリコンウェハである、請求項1に記載の半導体ウェハの製造方法。
- 前記溝を形成した後に、前記触媒層を第2の薬液で除去する、ことをさらに具備する、請求項1に記載の半導体ウェハの製造方法。
- 前記少なくとも一つの貴金属元素は、白金を含む、請求項1に記載の半導体ウェハの製造方法。
- 前記触媒層に貫通孔を形成し、前記エッチングにより前記溝に突起を形成する、ことをさらに具備する、請求項1に記載の半導体ウェハの製造方法。
- 前記溝は複数あり、隣接する前記溝の間の領域を前記第1の薬液または前記第2の薬液によりエッチングすることにより、前記表面に多孔質領域を形成する、ことをさらに具備する、請求項4に記載の半導体ウェハの製造方法。
- 前記表面に、炭化ケイ素または炭窒化ケイ素を含有する膜を形成する、ことをさらに具備する、請求項1に記載の半導体ウェハの製造方法。
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