JP7601503B2 - 半導体装置の製造方法及び基板処理装置 - Google Patents
半導体装置の製造方法及び基板処理装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 239000000758 substrate Substances 0.000 title claims description 33
- 238000012545 processing Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 claims description 87
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 84
- 229910052710 silicon Inorganic materials 0.000 claims description 84
- 239000010703 silicon Substances 0.000 claims description 84
- 230000008569 process Effects 0.000 claims description 65
- 238000005530 etching Methods 0.000 claims description 53
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 22
- 238000000151 deposition Methods 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 10
- 229920005591 polysilicon Polymers 0.000 claims description 10
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 claims description 9
- 239000000460 chlorine Substances 0.000 claims description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 140
- 235000012431 wafers Nutrition 0.000 description 47
- 230000015572 biosynthetic process Effects 0.000 description 31
- 238000006243 chemical reaction Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 22
- 230000008021 deposition Effects 0.000 description 14
- 230000007246 mechanism Effects 0.000 description 14
- 238000010926 purge Methods 0.000 description 11
- 229910052814 silicon oxide Inorganic materials 0.000 description 11
- 229910007264 Si2H6 Inorganic materials 0.000 description 8
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 7
- 238000003917 TEM image Methods 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000011534 incubation Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 229910003910 SiCl4 Inorganic materials 0.000 description 1
- XMIJDTGORVPYLW-UHFFFAOYSA-N [SiH2] Chemical compound [SiH2] XMIJDTGORVPYLW-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
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Description
前記基板にエッチングガスを供給し、前記凹部内の底部上に前記アモルファスシリコン膜を残すように前記アモルファスシリコン膜をエッチングする工程と、
前記基板にジクロロシランのみを供給し、前記アモルファスシリコン膜上にポリシリコン膜を堆積させる工程と、を有する。
19 ヒーター
21、31 ガス導入管
23A~23E、32 ガス供給源
24A~24E、33 ガス供給機構
27 バルブ
30 制御部
42 凹部
43 シリコン酸化膜
44 シード層
45、45a~45c シリコン膜
W ウエハ
Claims (10)
- 表面に凹部が設けられた基板にシリコン含有ガスを供給し、前記凹部内にアモルファスシリコン膜を堆積させる工程と、
前記基板にエッチングガスを供給し、前記凹部内の底部上に前記アモルファスシリコン膜を残すように前記アモルファスシリコン膜をエッチングする工程と、
前記基板にジクロロシランのみを供給し、前記アモルファスシリコン膜上にポリシリコン膜を堆積させる工程と、を有する半導体装置の製造方法。 - 前記凹部の表面は酸化膜で覆われており、前記アモルファスシリコン膜をエッチングする工程において、前記凹部内の底部上以外の前記酸化膜を露出させる請求項1に記載の半導体装置の製造方法。
- 前記酸化膜は二酸化シリコン膜である請求項2に記載の半導体装置の製造方法。
- 前記アモルファスシリコン膜をエッチングする工程は、前記エッチングガスを供給律速モードで前記凹部内の底面まで完全にエッチングしないように供給して行われる請求項1~3のいずれか一項に記載の半導体装置の製造方法。
- 前記供給律速モードは、前記エッチングガスの流量及び濃度の少なくとも1つを制御することにより行われる請求項4に記載の半導体装置の製造方法。
- 前記エッチングガスは、塩素である請求項4又は5に記載の半導体装置の製造方法。
- 前記凹部内にアモルファスシリコン膜を堆積させる工程において、前記シリコン含有ガスは、モノシラン又はジシランを含む請求項1~6のいずれか一項に記載の半導体装置の製造方法。
- 前記凹部内にアモルファスシリコン膜を堆積させる工程において、前記アモルファスシリコン膜を、前記凹部内で対向面に接触しない範囲内で、前記エッチングガスが通りにくくなる開口幅となるように堆積させる請求項1~7のいずれか一項に記載の半導体装置の製造方法。
- 前記アモルファスシリコン膜上にポリシリコン膜を堆積させる工程を、前記凹部内に前記ポリシリコン膜が充填されるまで行う請求項1~8のいずれか一項に記載の半導体装置の製造方法。
- 処理室と、
前記処理室に設けられ、表面に凹部が形成された基板を保持可能な基板保持部材と、
前記基板にシリコン含有ガスを供給するシリコン含有ガス供給部と、
前記基板にエッチングガスを供給するエッチングガス供給部と、
前記基板にジクロロシランを供給するジクロロシラン供給部と、
制御部と、
を有し、
前記制御部は、
前記シリコン含有ガス供給部が、前記基板に前記シリコン含有ガスを供給し、前記凹部内にアモルファスシリコン膜を堆積させる工程と、
前記エッチングガス供給部が、前記基板に前記エッチングガスを供給し、前記凹部内の底部上に前記アモルファスシリコン膜を残すように前記アモルファスシリコン膜をエッチングする工程と、
前記ジクロロシラン供給部が、前記基板に前記ジクロロシランのみを供給し、前記アモルファスシリコン膜上にポリシリコン膜を堆積させる工程と、
を行う、
基板処理装置。
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