JP7154232B2 - 堆積-処理-エッチングプロセスを用いたシリコンの選択的堆積 - Google Patents
堆積-処理-エッチングプロセスを用いたシリコンの選択的堆積 Download PDFInfo
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- JP7154232B2 JP7154232B2 JP2019566806A JP2019566806A JP7154232B2 JP 7154232 B2 JP7154232 B2 JP 7154232B2 JP 2019566806 A JP2019566806 A JP 2019566806A JP 2019566806 A JP2019566806 A JP 2019566806A JP 7154232 B2 JP7154232 B2 JP 7154232B2
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- 238000000034 method Methods 0.000 title claims description 62
- 229910052710 silicon Inorganic materials 0.000 title claims description 52
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- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 238000009616 inductively coupled plasma Methods 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
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- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 claims description 2
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- 229910052582 BN Inorganic materials 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 125000004122 cyclic group Chemical group 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
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- 150000002602 lanthanoids Chemical class 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 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
- 235000012431 wafers Nutrition 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
Claims (15)
- 膜を選択的に堆積する方法であって、
第1の表面と第2の表面を有する基板を提供することと、
前記第1の表面と前記第2の表面の上に、前記第1の表面の上と前記第2の表面の上とで異なる結晶化度を有するシリコン膜を堆積するために、シラン及び堆積プラズマに前記基板を曝露することと、
前記第1の表面の上のシリコン膜と前記第2の表面の上のシリコン膜との間の結晶化度の差異を増大させるため、Ar、He、又はH2のうちの一又は複数のプラズマを含む処理プラズマに前記シリコン膜を曝露することと、
前記第2の表面から前記膜のほとんどすべてを除去し、前記第1の表面の上の前記シリコン膜の少なくとも一部を残すため、前記第1の表面と前記第2の表面から前記膜をエッチングすることと、
前記第2の表面と比べて、前記第1の表面の上に膜を選択的に形成するため、堆積、処理及びエッチングを繰り返すことと、
を含む方法。 - 前記基板の前記第1の表面は基本的にシリコンからなる、請求項1に記載の方法。
- 前記基板の前記第2の表面は、酸化ケイ素、窒化ケイ素、ガラス、又は金属のうちの一又は複数を含む、請求項1に記載の方法。
- 前記シランは一般式SinH2n+2を有する少なくとも1つの種を含む、請求項1に記載の方法。
- 前記シランは基本的にSiH4からなる、請求項3に記載の方法。
- 前記シランは基本的にSi2H6からなる、請求項3に記載の方法。
- 前記シランは基本的にSiH2Cl2(ジクロロシラン又はDCS)からなる、請求項1に記載の方法。
- 前記堆積プラズマは、Ar、He、H2、又はN2のうちの一又は複数を含む、請求項1に記載の方法。
- 堆積後、前記シリコン膜の結晶化度は、前記第1の表面の上と前記第2の表面の上とで異なる、請求項1に記載の方法。
- 前記処理プラズマは基本的に容量結合プラズマからなる、請求項1に記載の方法。
- 前記処理プラズマは基本的に誘導結合プラズマからなる、請求項1に記載の方法。
- 処理後、堆積した前記シリコン膜の結晶化度は前記第1の表面の上と前記第2の表面の上とで異なる、請求項1に記載の方法。
- 前記膜は熱エッチングプロセスを用いてエッチングされる、請求項1に記載の方法。
- 前記膜は、プラズマエッチングプロセスを用いてエッチングされる、請求項1に記載の方法。
- 前記膜はH2、HCl、Cl2、又はNF3からなるプラズマによってエッチングされる、請求項1に記載の方法。
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PCT/US2018/036241 WO2018226817A1 (en) | 2017-06-06 | 2018-06-06 | Selective deposition of silicon using deposition-treat-etch process |
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US5470768A (en) * | 1992-08-07 | 1995-11-28 | Fujitsu Limited | Method for fabricating a thin-film transistor |
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