JP7223815B2 - 基板処理方法 - Google Patents
基板処理方法 Download PDFInfo
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- JP7223815B2 JP7223815B2 JP2021133282A JP2021133282A JP7223815B2 JP 7223815 B2 JP7223815 B2 JP 7223815B2 JP 2021133282 A JP2021133282 A JP 2021133282A JP 2021133282 A JP2021133282 A JP 2021133282A JP 7223815 B2 JP7223815 B2 JP 7223815B2
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- Prior art keywords
- pressure
- chamber
- depressurization
- substrate processing
- high pressure
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- 239000000758 substrate Substances 0.000 title claims description 119
- 238000003672 processing method Methods 0.000 title claims description 53
- 239000007789 gas Substances 0.000 claims description 108
- 239000010409 thin film Substances 0.000 claims description 103
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 59
- 239000000460 chlorine Substances 0.000 claims description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 150000001875 compounds Chemical class 0.000 claims description 24
- 239000001257 hydrogen Substances 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 20
- 229910052801 chlorine Inorganic materials 0.000 claims description 20
- 230000003247 decreasing effect Effects 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 230000006837 decompression Effects 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 10
- 239000010408 film Substances 0.000 claims description 7
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 229910021480 group 4 element Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 description 37
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 26
- 239000010936 titanium Substances 0.000 description 22
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 20
- 239000012535 impurity Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 16
- 239000002184 metal Substances 0.000 description 14
- 150000004767 nitrides Chemical class 0.000 description 14
- 229910021529 ammonia Inorganic materials 0.000 description 13
- 238000000231 atomic layer deposition Methods 0.000 description 12
- 239000002243 precursor Substances 0.000 description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 11
- 230000000704 physical effect Effects 0.000 description 11
- 229910052719 titanium Inorganic materials 0.000 description 11
- 150000002431 hydrogen Chemical class 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 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
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 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
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Description
Claims (19)
- 第1チャンバ内に基板を搬入する段階と、
前記第1チャンバ内の圧力が常圧よりも高い第1高圧圧力に達するように前記第1チャンバ内の圧力を上昇させる第1加圧段階と、
前記第1チャンバ内の圧力が前記第1高圧圧力よりも低く常圧以上である第2高圧圧力に達するように前記第1チャンバ内の圧力を下降させる第1減圧段階と、
前記第1加圧段階及び前記第1減圧段階を所定の回数反復して行う第1加減圧反復遂行段階、及び
前記第1チャンバ内の圧力が常圧よりも低い第1低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第2減圧段階と、を含むことを特徴とする基板処理方法。 - 前記第2高圧圧力が常圧よりも大きい場合、
前記第2減圧段階は、
前記第1チャンバ内の圧力が常圧に達するように前記第1チャンバ内の圧力を下降させる第2-1減圧段階、及び
前記第1チャンバ内の圧力が前記第1低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第2-2減圧段階と、を含み、
前記第2高圧圧力が常圧である場合、
前記第2減圧段階は、
前記第1チャンバ内の圧力が前記第1低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第2-2減圧段階と、を含むことを特徴とする請求項1に記載の基板処理方法。 - 前記第2減圧段階は、
前記第2-2減圧段階の前に、
常圧を所定の時間維持する第1常圧維持段階を含むことを特徴とする請求項2に記載の基板処理方法。 - 前記第1常圧維持段階は、
パージガスを供給することを特徴とする請求項3に記載の基板処理方法。 - 前記第2減圧段階の後に、
前記第1低圧圧力を所定の時間維持する第1低圧維持段階を含むことを特徴とする請求項1に記載の基板処理方法。 - 前記第1加圧段階と前記第1減圧段階の間に、
前記第1高圧圧力を所定の時間維持する第1高圧維持段階を含み、
前記第1加減圧反復遂行段階は、
前記第1加圧段階、前記第1高圧維持段階及び前記第1減圧段階を順次に所定の回数反復して行うことを特徴とする請求項1に記載の基板処理方法。 - 前記第1加圧段階は、第1ガス雰囲気で行われ、
前記第2減圧段階の後に、
前記第1ガスとは異なる第2ガス雰囲気で、前記第1チャンバ内の圧力が常圧よりも高い第3高圧圧力に達するように前記第1チャンバ内の圧力を上昇させる第2加圧段階と、
前記第1チャンバ内の圧力が前記第3高圧圧力よりも低く常圧以上である第4高圧圧力に達するように前記第1チャンバ内の圧力を下降させる第3減圧段階と、
前記第2加圧段階及び前記第3減圧段階を所定の回数反復して行う第2加減圧反復遂行段階、及び
前記第1チャンバ内の圧力が常圧よりも低い第2低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第4減圧段階と、を含むことを特徴とする請求項1に記載の基板処理方法。 - 前記第1加圧段階は、第1ガス雰囲気で行われ、
前記第2減圧段階の後に、
前記第1チャンバから前記基板を搬出する段階と、
前記基板を第2チャンバに搬入する段階と、
前記第1ガスとは異なる第2ガス雰囲気で、前記第2チャンバ内の圧力が常圧よりも高い第3高圧圧力に達するように前記第2チャンバ内の圧力を上昇させる第2加圧段階と、
前記第2チャンバ内の圧力が前記第3高圧圧力よりも低く常圧以上である第4高圧圧力に達するように前記第2チャンバ内の圧力を下降させる第3減圧段階と、
前記第2加圧段階及び前記第3減圧段階を所定の回数反復して行う第2加減圧反復遂行段階、及び
前記第2チャンバ内の圧力が常圧よりも低い第2低圧圧力に達するように前記第2チャンバ内の圧力を下降させる第4減圧段階と、を含むことを特徴とする請求項1に記載の基板処理方法。 - 前記第4減圧段階の後に、
第2低圧圧力を所定の時間維持する第2低圧維持段階を含むことを特徴とする請求項7又は請求項8に記載の基板処理方法。 - 前記第4高圧圧力が常圧よりも大きい場合、
前記第4減圧段階は、
前記第1チャンバ内の圧力が常圧に達するように前記第1チャンバ内の圧力を下降させる第4-1減圧段階、及び
前記第1チャンバ内の圧力が前記第2低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第4-2減圧段階と、を含み、
前記第4高圧圧力が常圧である場合、
前記第4減圧段階は、
前記第1チャンバ内の圧力が前記第2低圧圧力に達するように前記第1チャンバ内の圧力を下降させる第4-2減圧段階と、を含むことを特徴とする請求項7に記載の基板処理方法。 - 前記第4高圧圧力が常圧よりも大きい場合、
前記第4減圧段階は、
前記第2チャンバ内の圧力が常圧に達するように前記第2チャンバ内の圧力を下降させる第4-1減圧段階、及び
前記第2チャンバ内の圧力が前記第2低圧圧力に達するように前記第2チャンバ内の圧力を下降させる第4-2減圧段階と、を含み、
前記第4高圧圧力が常圧である場合、
前記第4減圧段階は、
前記第2チャンバ内の圧力が前記第2低圧圧力に達するように前記第2チャンバ内の圧力を下降させる第4-2減圧段階と、を含むことを特徴とする請求項8に記載の基板処理方法。 - 前記第4減圧段階は、
前記第4-2減圧段階の前に、
常圧を所定の時間維持する第2常圧維持段階を含むことを特徴とする請求項10又は請求項11に記載の基板処理方法。 - 前記第2常圧維持段階は、
パージガスを供給することを特徴とする請求項12に記載の基板処理方法。 - 前記第2加圧段階と前記第3減圧段階の間に、
前記第3高圧圧力を所定の時間維持する第2高圧維持段階を含み、
前記第2加減圧反復遂行段階は、
前記第2加圧段階、前記第2高圧維持段階及び前記第3減圧段階を順次に所定の回数反復して行うことを特徴とする請求項7又は請求項8に記載の基板処理方法。 - 前記第1ガスは、水素(H)、酸素(O)、窒素(N)、塩素(Cl)及びフッ素(F)のうち少なくとも一つを含むガスであることを特徴とする請求項7又は8に記載の基板処理方法。
- 前記第2ガスは、水素(H)、酸素(O)、窒素(N)、塩素(Cl)及びフッ素(F)のうち少なくとも一つを含むガスであることを特徴とする請求項7又は請求項8に記載の基板処理方法。
- 前記基板上に薄膜が形成されていることを特徴とする請求項1ないし8のいずれかに記載の基板処理方法。
- 前記薄膜は、トランジスタのゲート絶縁膜のうち少なくとも一部をなすことを特徴とする請求項17に記載の基板処理方法。
- 前記薄膜は、金属元素、IV族元素、III-V化合物、II-VI化合物、窒素(N)、酸素(O)、ホウ素(B)のうち少なくとも一つを含むことを特徴とする請求項17に記載の基板処理方法。
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JP2015026692A (ja) | 2013-07-25 | 2015-02-05 | 株式会社ユーテック | 結晶化方法及び加圧式ランプアニール装置 |
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US20060223899A1 (en) | 2005-03-30 | 2006-10-05 | Hillman Joseph T | Removal of porogens and porogen residues using supercritical CO2 |
JP2015026692A (ja) | 2013-07-25 | 2015-02-05 | 株式会社ユーテック | 結晶化方法及び加圧式ランプアニール装置 |
JP2021064781A (ja) | 2019-10-16 | 2021-04-22 | ウォニク アイピーエス カンパニー リミテッドWonik Ips Co.,Ltd. | 基板処理方法 |
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