JP7486588B2 - エッチングまたは堆積のための方法 - Google Patents
エッチングまたは堆積のための方法 Download PDFInfo
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- JP7486588B2 JP7486588B2 JP2022543417A JP2022543417A JP7486588B2 JP 7486588 B2 JP7486588 B2 JP 7486588B2 JP 2022543417 A JP2022543417 A JP 2022543417A JP 2022543417 A JP2022543417 A JP 2022543417A JP 7486588 B2 JP7486588 B2 JP 7486588B2
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- 238000000034 method Methods 0.000 title claims description 89
- 230000008021 deposition Effects 0.000 title description 53
- 238000005530 etching Methods 0.000 title description 40
- 239000000758 substrate Substances 0.000 claims description 126
- 229910052721 tungsten Inorganic materials 0.000 claims description 111
- 239000002243 precursor Substances 0.000 claims description 95
- 239000010937 tungsten Substances 0.000 claims description 83
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 81
- 239000007789 gas Substances 0.000 claims description 72
- 238000006243 chemical reaction Methods 0.000 claims description 56
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 48
- 239000012159 carrier gas Substances 0.000 claims description 44
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 43
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 229910052593 corundum Inorganic materials 0.000 claims description 37
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 37
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 33
- 229910052718 tin Inorganic materials 0.000 claims description 33
- 229910052750 molybdenum Inorganic materials 0.000 claims description 31
- 239000003708 ampul Substances 0.000 claims description 25
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 24
- 229910052707 ruthenium Inorganic materials 0.000 claims description 23
- 235000012239 silicon dioxide Nutrition 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 19
- 229910052681 coesite Inorganic materials 0.000 claims description 18
- 229910052906 cristobalite Inorganic materials 0.000 claims description 18
- 229910052682 stishovite Inorganic materials 0.000 claims description 18
- 229910052905 tridymite Inorganic materials 0.000 claims description 18
- 229910004541 SiN Inorganic materials 0.000 claims description 15
- 229910052741 iridium Inorganic materials 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010408 film Substances 0.000 description 90
- 238000000151 deposition Methods 0.000 description 58
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 54
- 230000008569 process Effects 0.000 description 48
- 239000000376 reactant Substances 0.000 description 30
- 238000005229 chemical vapour deposition Methods 0.000 description 28
- 229910052786 argon Inorganic materials 0.000 description 27
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 25
- 238000010926 purge Methods 0.000 description 23
- 239000004020 conductor Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 9
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 239000011261 inert gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006911 nucleation Effects 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000006557 surface reaction Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 150000002429 hydrazines Chemical class 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002052 molecular layer Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- -1 tungsten nitride Chemical class 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241000588731 Hafnia Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910004166 TaN Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical group 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
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- C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
- C23C16/08—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metal halides
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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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- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
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Description
(a)基板を制御可能にエッチングするための異種プロセス条件の第1のセットであって、基板は、Al2O3、TiN、HfO2、ZrO2、W、Mo、Co、Ru、およびSiN膜から選定される膜を含む、第1のセット、または、
(b)タングステンを基板の表面上へと制御可能に堆積させるための異種プロセス条件の第2のセットであって、基板は、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される膜を含む、第2のセット
のもとで、反応ゾーン内で、WOCl4および還元ガスに基板を暴露すること
を含む方法を提供する。
反応ゾーン内で、(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl4、および、(ii)還元ガスに、Al2O3、TiN、HfO2、ZrO2、W、Mo、Co、Ru、およびSiN膜から選定される膜を含む基板を暴露することであって、反応ゾーン内の圧力は約0.5から500トールであり、基板温度は約200℃から1000℃であり、還元ガス流れ速度は約0.1から10リットル毎分であり、キャリアガス流れは約0.001から1リットル毎分であり、反応ゾーン内のWOCl4の濃度は1000ppmより大であり、前駆体アンプル温度は約10℃から約180℃であり、以て、Al2O3、TiN、HfO2、ZrO2、W、Mo、Co、Ru、およびSiN膜から選定される膜を含む基板がエッチングされる、基板を暴露すること
を含む方法を提供する。
反応ゾーン内で、(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl4、および、(ii)還元ガスに、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される膜を含む基板を暴露することであって、反応ゾーン内の圧力は約0.5トールから500トールであり、基板温度は約200℃から1000℃であり、還元ガス流れ速度は約0.1から10リットル毎分であり、キャリアガス流れは約0.001から1リットル毎分であり、WOCl4の濃度は1000ppm未満であり、前駆体アンプル温度は約10℃から約180℃であり、以て、タングステンが、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される膜を含む基板の表面上へと堆積される、基板を暴露すること
を含む方法を提供する。
反応ゾーン内で、(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl4、および、(ii)共反応物還元ガスに、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、Cu、Ir、SiN、TiN、およびSiO2膜から選択される膜を含む基板を暴露することであって、反応ゾーン内の圧力は約0.5トールから500トールであり、基板温度は約200℃から1000℃であり、還元ガス流れ速度は約0.1から10リットル毎分であり、キャリアガス流れは約0.001から1リットル毎分であり、WOCl4の濃度は、より少ない1000ppmであり、前駆体アンプル温度は約10℃から約180℃であり、以て、タングステンが、W、Mo、Co、Ru、Cu、Ir、および、他の適した金属導体膜などの金属導体膜上へと選択的に堆積されるが、窒化物および/または誘電体酸化物膜上へは堆積されない、基板を暴露すること
を含む方法を提供する。
(a)Al2O3もしくはTiNを含む基板膜を制御可能にエッチングするためのプロセス条件の第1のセット、または、
(b)タングステンを基板の表面上へと制御可能に堆積させるためのプロセス条件の第2のセットであって、基板は、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される、第2のセット
のもとで、反応ゾーン内で、WOCl4および還元ガスに基板を暴露すること
を含む方法を提供する。
・圧力 => 0.5トールから500トール、
・温度 => 200℃から1000℃、
・H2流れ速度 => 0.1から10リットル毎分、
・キャリアガス流れ => 0.001から1リットル毎分、および、
・前駆体アンプル温度 => 10℃から180℃。
・圧力 => 0.5トールから500トール、
・温度 => 200℃から1000℃、
・H2流れ速度 => 0.1から10リットル毎分、
・キャリアガス流れ => 0.001から1リットル毎分、および、
・前駆体アンプル温度 => 10℃から180℃。
・反応ゾーン内の圧力は約0.5トールから500トールである、
・基板温度は約200℃から1000℃である、
・還元ガス流れ速度は約0.1から10リットル毎分である、
・キャリアガス流れは約0.001から1リットル毎分である、
・[WOCl4]の濃度は、より少ない1000ppmである、および、
・前駆体アンプル温度は約10℃から約180℃である、
のもとで行う、基板を暴露することにより、金属導体膜上へと選択的に堆積される。
(a)基板を制御可能にエッチングするためのプロセス条件の第1のセットであって、基板は、Al2O3、TiN、HfO2、ZrO2、W、Mo、Co、Ru、Ir、Cu、SiO2、およびSiN膜から選定される膜を含む、第1のセット、
(b)タングステンを基板の表面上へと制御可能に堆積させるためのプロセス条件の第2のセットであって、基板は、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、Ir、Cu、SiN、TiN、およびSiO2膜から選定される膜を含む、第2のセット、または、
(c)タングステンを、金属導電W、Mo、Co、Ru、Ir、Cu、基板上へと選択的に堆積させるが、近隣の窒化物もしくは誘電体酸化物膜上へは堆積させないためのプロセス条件の第3のセット
のもとで、反応ゾーン内で、WOCl4および還元ガスに基板を暴露することを含む方法である。
(i)WOCl4前駆体に暴露され、後に続くのが、
(ii)吸引または不活性ガスによりパージすることであり、後に続くのが、
(iii)還元ガスへの暴露であり、後に続くのが、
(iv)吸引または不活性ガスによりパージすること、および、基板上での所望の量のエッチングが起こるまで、(i)ないし(iv)のシーケンスを繰り返すことである、態様6の方法である。
反応ゾーン内で、
(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl4、および、
(ii)還元ガス
に、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される膜を含む基板を暴露することであって、
反応ゾーン内の圧力は約0.5トールから500トールであり、基板温度は約200℃から1000℃であり、還元ガス流れ速度は約0.1から10リットル毎分であり、キャリアガス流れは約0.001から1リットル毎分であり、WOCl4の濃度は1000ppm未満であり、前駆体アンプル温度は約10℃から約180℃であり、
以て、タングステンが、Al2O3、HfO2、ZrO2、W、Mo、Co、Ru、SiN、TiN、およびSiO2膜から選定される膜を含む基板の表面上へと堆積される、基板を暴露することを含む方法である。
(i)WOCl4前駆体に暴露され、後に続くのが、
(ii)吸引または不活性ガスによりパージすることであり、後に続くのが、
(iii)還元ガスへの暴露であり、後に続くのが、
(iv)吸引または不活性ガスによりパージすること、および、基板上でのタングステンの所望の量の堆積が起こるまで、(i)ないし(iv)のシーケンスを繰り返すことである、態様16の方法である。
タングステンは、W、Mo、Co、Ru、Cu、Ir、および、他の適した金属導体膜などの金属導体膜上へと選択的に堆積されるが、窒化物および/または誘電体酸化物膜上へは堆積されない、方法である。
Claims (2)
- 反応ゾーン内で、
(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl 4 、および、
(ii)還元ガス
に、Al 2 O 3 、TiN、HfO 2 、ZrO 2 、W、Mo、Co、Ru、およびSiN膜から選定される膜を含む基板を暴露することであって、
前記反応ゾーン内の圧力は0.5トールから500トールであり、基板温度は200℃から1000℃であり、還元ガス流れ速度は0.1から10リットル毎分であり、キャリアガス流れは0.001から1リットル毎分であり、WOCl 4 の濃度は1000ppmより大であり、前駆体アンプル温度は10℃から180℃であり、
以て、Al 2 O 3 、TiN、HfO 2 、ZrO 2 、W、Mo、Co、Ru、およびSiN膜から選定される膜がエッチングされる、基板を暴露することを含む方法。 - 反応ゾーン内で、
(i)前駆体アンプルから送り出されるキャリアガスと一緒のWOCl4、および、
(ii)還元ガス
に、Al2O3、HfO2、ZrO2、W、Mo、Co、Cu、Ru、Ir、SiN、TiN、およびSiO2膜から選定される膜を含む基板を暴露することであって、
前記反応ゾーン内の圧力は0.5トールから500トールであり、基板温度は200℃から1000℃であり、還元ガス流れ速度は0.1から10リットル毎分であり、キャリアガス流れは0.001から1リットル毎分であり、WOCl4の濃度は1000ppm未満であり、前駆体アンプル温度は10℃から180℃であり、
以て、タングステンが、Al2O3、HfO2、ZrO2、W、Mo、Co、Cu、Ru、Ir、SiN、TiN、およびSiO2膜から選定される膜を含む前記基板の表面上へと堆積される、基板を暴露することを含む方法。
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