JP7213726B2 - 成膜方法及び熱処理装置 - Google Patents
成膜方法及び熱処理装置 Download PDFInfo
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- JP7213726B2 JP7213726B2 JP2019046357A JP2019046357A JP7213726B2 JP 7213726 B2 JP7213726 B2 JP 7213726B2 JP 2019046357 A JP2019046357 A JP 2019046357A JP 2019046357 A JP2019046357 A JP 2019046357A JP 7213726 B2 JP7213726 B2 JP 7213726B2
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- 238000000034 method Methods 0.000 title claims description 94
- 238000010438 heat treatment Methods 0.000 title claims description 53
- 239000007789 gas Substances 0.000 claims description 116
- 239000000758 substrate Substances 0.000 claims description 88
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 52
- 229910052710 silicon Inorganic materials 0.000 claims description 52
- 239000010703 silicon Substances 0.000 claims description 52
- 239000004065 semiconductor Substances 0.000 claims description 45
- 238000005530 etching Methods 0.000 claims description 29
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052732 germanium Inorganic materials 0.000 claims description 11
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 11
- 230000005764 inhibitory process Effects 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 93
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 52
- 239000010410 layer Substances 0.000 description 40
- 235000012431 wafers Nutrition 0.000 description 25
- 239000002994 raw material Substances 0.000 description 17
- 229910052736 halogen Inorganic materials 0.000 description 16
- 150000002367 halogens Chemical class 0.000 description 16
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 9
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 229910052990 silicon hydride Inorganic materials 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- QUZPNFFHZPRKJD-UHFFFAOYSA-N germane Chemical compound [GeH4] QUZPNFFHZPRKJD-UHFFFAOYSA-N 0.000 description 4
- 229910052986 germanium hydride Inorganic materials 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 3
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 3
- GMEFXBFKMIZRMO-UHFFFAOYSA-N aminogermanium Chemical compound [Ge]N GMEFXBFKMIZRMO-UHFFFAOYSA-N 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 229910003691 SiBr Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KVEARUYYTYRPGK-UHFFFAOYSA-N N-ethyl-N-germylethanamine Chemical compound CCN([GeH3])CC KVEARUYYTYRPGK-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- AHVNUGPIPKMDBB-UHFFFAOYSA-N germanium Chemical compound [Ge].[Ge].[Ge] AHVNUGPIPKMDBB-UHFFFAOYSA-N 0.000 description 1
- VGRFVJMYCCLWPQ-UHFFFAOYSA-N germanium Chemical compound [Ge].[Ge] VGRFVJMYCCLWPQ-UHFFFAOYSA-N 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- FCNQZDQTHQTUMZ-UHFFFAOYSA-N n-germyl-n-methylmethanamine Chemical compound CN(C)[GeH3] FCNQZDQTHQTUMZ-UHFFFAOYSA-N 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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Description
(第1の実施形態)
図1を参照し、第1の実施形態の成膜方法について説明する。図1は、第1の実施形態の成膜方法を示す工程断面図である。
図4を参照し、第2の実施形態の成膜方法について説明する。図4は、第2の実施形態の成膜方法を示す工程断面図である。
図5を参照し、第3の実施形態の成膜方法について説明する。図5は、第3の実施形態の成膜方法を示す工程断面図である。
図6を参照し、第4の実施形態の成膜方法について説明する。図6は、第4の実施形態の成膜方法を示す工程断面図である。
上記の成膜方法を実施できる熱処理装置について、多数枚の基板に対して一括で熱処理を行うバッチ式の装置を例に挙げて説明する。但し、熱処理装置は、バッチ式の装置に限定されるものではない。例えば、基板を1枚ずつ処理する枚葉式の装置であってもよい。また、例えば処理容器内の回転テーブルの上に配置した複数のウエハを回転テーブルにより公転させ、原料ガスが供給される領域と、原料ガスと反応する反応ガスが供給される領域とを順番に通過させて基板の上に成膜するセミバッチ式の装置であってもよい。
34 処理容器
40 ガス供給部
42 加熱部
95 制御部
Claims (12)
- 凹部に非晶質半導体膜を成膜する工程と、
前記非晶質半導体膜を熱処理して多結晶半導体膜を形成する工程と、
前記熱処理により形成された前記多結晶半導体膜の上に、多結晶半導体膜を成膜する工程と、
前記非晶質半導体膜を成膜する工程と前記熱処理する工程との間に行われ、前記凹部の上部よりも下部の膜厚が厚くなるように前記非晶質半導体膜をエッチングする工程と、
を有する、
成膜方法。 - 前記非晶質半導体膜を成膜する工程は、前記非晶質半導体膜をコンフォーマルに形成する工程である、
請求項1に記載の成膜方法。 - 前記非晶質半導体膜を成膜する工程、前記エッチングする工程及び前記熱処理する工程を複数回繰り返す、
請求項1又は2に記載の成膜方法。 - 前記熱処理により形成された前記多結晶半導体膜の表面に結晶成長を阻害する阻害層を形成する工程を有する、
請求項3に記載の成膜方法。 - 前記阻害層を形成する工程は、前記熱処理により形成された前記多結晶半導体膜の表面を改質する工程である、
請求項4に記載の成膜方法。 - 前記阻害層を形成する工程は、前記熱処理により形成された前記多結晶半導体膜の表面を酸化する工程である、
請求項4に記載の成膜方法。 - 前記阻害層を形成する工程は、前記非晶質半導体膜を成膜する工程よりも膜中水素濃度が高くなる条件で前記熱処理により形成された多結晶半導体膜の表面に膜を形成する工程である、
請求項4に記載の成膜方法。 - 前記非晶質半導体膜を成膜する工程の前に行われ、前記凹部にシード層を形成する工程を有する、
請求項1乃至7のいずれか一項に記載の成膜方法。 - 前記熱処理する工程は、前記非晶質半導体膜を成膜する工程の温度以上で行われる、
請求項1乃至8のいずれか一項に記載の成膜方法。 - 前記熱処理する工程は、前記多結晶半導体膜を成膜する工程と略同じ温度で行われる、
請求項1乃至8のいずれか一項に記載の成膜方法。 - 前記非晶質半導体膜は、シリコン(Si)及びゲルマニウム(Ge)の少なくとも1つを含む膜である、
請求項1乃至10のいずれか一項に記載の成膜方法。 - 表面に凹部を有する基板を収容する処理容器と、
前記処理容器内に処理ガスを供給するガス供給部と、
前記基板を加熱する加熱部と、
制御部と、
を備え、
前記制御部は、
凹部に非晶質半導体膜を成膜する工程と、
前記非晶質半導体膜を熱処理して多結晶半導体膜を形成する工程と、
前記熱処理により形成された前記多結晶半導体膜の上に、多結晶半導体膜を成膜する工程と、
前記非晶質半導体膜を成膜する工程と前記熱処理する工程との間に行われ、前記凹部の上部よりも下部の膜厚が厚くなるように前記非晶質半導体膜をエッチングする工程と、
を実行するように前記ガス供給部及び前記加熱部を制御する、
熱処理装置。
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