JP6895797B2 - 成膜装置 - Google Patents
成膜装置 Download PDFInfo
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- JP6895797B2 JP6895797B2 JP2017092820A JP2017092820A JP6895797B2 JP 6895797 B2 JP6895797 B2 JP 6895797B2 JP 2017092820 A JP2017092820 A JP 2017092820A JP 2017092820 A JP2017092820 A JP 2017092820A JP 6895797 B2 JP6895797 B2 JP 6895797B2
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- 230000008021 deposition Effects 0.000 title 1
- 239000002994 raw material Substances 0.000 claims description 77
- 239000000758 substrate Substances 0.000 claims description 65
- 238000011144 upstream manufacturing Methods 0.000 claims description 39
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 6
- 239000003989 dielectric material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 171
- 238000010586 diagram Methods 0.000 description 14
- 238000004458 analytical method Methods 0.000 description 10
- 239000012495 reaction gas Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012159 carrier gas Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/455—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 method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—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 method of coating
- C23C16/458—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 method of coating characterised by the method used for supporting substrates in the reaction chamber
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/50—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 method of coating using electric discharges
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/50—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 method of coating using electric discharges
- C23C16/505—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 method of coating using electric discharges using radio frequency discharges
- C23C16/509—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 method of coating using electric discharges using radio frequency discharges using internal electrodes
- C23C16/5096—Flat-bed apparatus
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- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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Description
(成膜装置)
第1実施形態に係る成膜装置について説明する。図1は、第1実施形態に係る成膜装置の第1構成例の概略図である。図2は、第1実施形態に係る成膜装置の第2構成例の概略図である。図3は、第1実施形態に係る成膜装置の第3構成例の概略図である。図4は、第1実施形態に係る成膜装置の第4構成例の概略図である。
第1実施形態に係る成膜装置の作用・効果を確認するために、原料ガスの流れ方向における位置x(m)と圧力p(Pa)との関係を理論解析により算出した。以下、理論解析の条件を示す。
原料ガスの流れ方向に沿った載置台110の長さ 500mm
原料ガスの流れ方向に垂直な方向に沿った載置台110の長さ 500mm
載置台110の上面と水平部121の下面との間隔H1 5mm
載置台110の上面と傾斜部122の右端部の下面との間隔H2 50mm
ガス温度 100℃
第1のガス供給部130から供給されるArガスの流量 2000sccm
処理空間Sとガス排気部150との接続部分での圧力 133Pa
バッフル板160 なし
また、比較のために、載置台110の上面と天板120の下面との距離が一定である成膜装置の場合についても同様に、原料ガスの流れ方向における位置x(m)と圧力p(Pa)との関係を理論解析により算出した。以下、理論解析の条件を示す。
原料ガスの流れ方向に沿った載置台110の長さ 500mm
原料ガスの流れ方向に垂直な方向に沿った載置台110の長さ 500mm
載置台110の上面と天板120の下面との間隔 5mm(一定)
ガス温度 100℃
第1のガス供給部130から供給されるArガスの流量 2000sccm
処理空間Sとガス排気部150との接続部分での圧力 133Pa
バッフル板160 なし
下記の数式(1)は、粘性流領域における気体の平行平板のコンダクタンスの式に基づいて導出される式であり、位置xにおける微小距離dx間での圧力低下−dpを表す。
第2実施形態に係る成膜装置について説明する。図8は、第2実施形態に係る成膜装置の第1構成例の概略図である。図9は、第2実施形態に係る成膜装置の第2構成例の概略図である。図10は、第2実施形態に係る成膜装置の第3構成例の概略図である。
第3実施形態に係る成膜装置について説明する。図11は、第3実施形態に係る成膜装置の一例の概略図である。
第4実施形態に係る成膜装置について説明する。図12は、第4実施形態に係る成膜装置の一例の概略図である。図12(a)は上面図であり、図12(b)は図12(a)における一点鎖線A−Aにおいて切断した断面を示す。なお、図12(a)では、説明の便宜上、天板420の図示を省略している。
次に、本発明の実施形態に係る成膜装置による効果を確認するために行ったCFD(Computational Fluid Dynamics)シミュレーションについて説明する。
実施例1では、第1実施形態に係る成膜装置の構成を用いて、第1のガス供給部130から処理空間Sにガス(Ar/O2=2000sccm/500sccm)を供給したときの、基板上のガスの流れ方向における位置x(m)と圧力(Pa)との関係を算出した。以下、実施例1におけるシミュレーション条件を示す。
ガスの流れ方向に沿った載置台110の長さ 500mm
ガスの流れ方向に垂直な方向に沿った載置台110の長さ 500mm
載置台110の上面と水平部121の下面との間隔H1 5mm
載置台110の上面と傾斜部122の右端部の下面との間隔H2 43.4mm
バッフル板160 多孔板(開口率0.5、透過率10−7m2)又は金属メッシュ(開口率0.9、透過率10−5m2)
ガスの流れ方向に沿ったバッフル板160の長さ 425mm
基板サイズ φ300mm
ガス温度 100℃
処理空間Sとガス排気部150との接続部分の圧力 133Pa
図13は、基板上のガスの流れ方向における位置と圧力との関係を示す図である。図13中、横軸は基板Wの中心からの位置x(m)であり、負の値の側がガスの流れ方向の上流側を示し、正の値の側がガスの流れ方向の下流側を示す。また、縦軸は圧力p(Pa)である。また、図13中、実線はバッフル板160が多孔板である場合の結果であり、破線はバッフル板160が金属メッシュである場合の結果である。
実施例2では、第1実施形態に係る成膜装置の構成を用いて、第1のガス供給部130から処理空間Sにキャリアガス(Ar=1000sccm)を供給している状態から、原料ガス(TiCl4=100sccm)を添加したときの以下の特性を算出した。なお、成膜装置の各部の大きさ、位置等の条件については、実施例1と同様である。
処理空間Sの圧力(Pa)
基板上のAr密度(1/cm3)
基板上のTiCl4密度(1/cm3)
図14は、基板上のガスの流れ方向における位置と各特性との関係を示す図であり、TiCl4の供給を開始してから0.34秒後の各特性を示す。図14(a)は基板上のガスの流れ方向における位置と圧力との関係を示し、図14(b)は基板上のガスの流れ方向における位置とAr密度との関係を示し、図14(c)は基板上のガスの流れ方向における位置とTiCl4密度との関係を示す。
120,220,320,420 天板
130 第1のガス供給部
230,330,430 ガス供給部
140 第2のガス供給部
141 第1の電極
142 第2の電極
144 高周波電源
160,260,360,460 バッフル板
211,311 下部電極
213,313 高周波電源
Claims (15)
- 基板を載置する載置台と、
前記載置台と対向し、前記載置台との間に処理空間を形成する天板と、
前記基板に対して水平方向から前記処理空間に原料ガスを供給するガス供給部と、
前記載置台と前記天板との間に設けられ、前記原料ガスの流れを整えるバッフル板と、
を備え、
前記載置台と前記天板との対向面の間隔が、前記原料ガスの流れ方向の上流側よりも下流側のほうが広くなるように、前記天板側又は前記載置台側の対向面が傾斜しており、
前記バッフル板は、前記載置台側の対向面に対して平行に設けられている、
成膜装置。 - 基板を載置する載置台と、
前記載置台と対向し、前記載置台との間に処理空間を形成する天板と、
前記基板に対して水平方向から前記処理空間に原料ガスを供給するガス供給部と、
前記載置台と前記天板との間に設けられ、前記原料ガスの流れを整えるバッフル板と、
を備え、
前記載置台と前記天板との対向面の間隔が、前記原料ガスの流れ方向の上流側よりも下流側のほうが広くなるように、前記天板側又は前記載置台側の対向面が傾斜しており、
前記バッフル板は、多孔板又はメッシュ板である、
成膜装置。 - 前記天板側の対向面は、前記原料ガスの流れ方向の上流側から下流側に向かって高くなるように傾斜している、
請求項1又は2に記載の成膜装置。 - 前記天板側の対向面は、前記原料ガスの粘性係数、温度、流量、及び圧力に基づいて、前記原料ガスの流れ方向の上流側と下流側との圧力が同一となるように傾斜している、
請求項3に記載の成膜装置。 - 前記載置台と前記天板との対向面の間隔は、可変である、
請求項1乃至4のいずれか一項に記載の成膜装置。 - 前記天板側の対向面は、曲面形状を有する、
請求項1乃至5のいずれか一項に記載の成膜装置。 - 前記バッフル板は、前記天板側の対向面に取り付けられている、
請求項1乃至6のいずれか一項に記載の成膜装置。 - 前記バッフル板は、前記載置台側の対向面に取り付けられている、
請求項1乃至6のいずれか一項に記載の成膜装置。 - 前記天板及び前記バッフル板は、金属材料により形成されており、
前記載置台は、誘電体材料により形成されている、
請求項1乃至8のいずれか一項に記載の成膜装置。 - 前記バッフル板は、複数設けられており、
複数の前記バッフル板は、前記載置台側の対向面に対して平行に設けられた第1のバッフル板と、前記第1のバッフル板に対して平行に所定の間隔を有して設けられた第2のバッフル板とを含む、
請求項1乃至9のいずれか一項に記載の成膜装置。 - 前記バッフル板は、複数設けられており、
複数の前記バッフル板は、前記載置台側の対向面に対して平行に設けられた第1のバッフル板と、前記第1のバッフル板に対して垂直に設けられた第2のバッフル板とを含む、
請求項1乃至9のいずれか一項に記載の成膜装置。 - 前記バッフル板は、複数設けられており、
複数の前記バッフル板は、前記原料ガスの流れ方向に対し、所定の角度を有して平行に設けられている、
請求項1乃至11のいずれか一項に記載の成膜装置。 - 前記処理空間よりも前記原料ガスの流れ方向の上流側に設けられたプラズマ発生源を有する、
請求項1乃至12のいずれか一項に記載の成膜装置。 - 前記載置台に設けられ、高周波電源で生成される高周波電力が供給される電極を有する、
請求項1乃至12のいずれか一項に記載の成膜装置。 - 前記載置台は、周方向に沿って複数の前記基板を載置可能である、
請求項1乃至14のいずれか一項に記載の成膜装置。
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