JP7416210B2 - 炭化ケイ素含有膜を形成する方法及び装置 - Google Patents
炭化ケイ素含有膜を形成する方法及び装置 Download PDFInfo
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- JP7416210B2 JP7416210B2 JP2022509933A JP2022509933A JP7416210B2 JP 7416210 B2 JP7416210 B2 JP 7416210B2 JP 2022509933 A JP2022509933 A JP 2022509933A JP 2022509933 A JP2022509933 A JP 2022509933A JP 7416210 B2 JP7416210 B2 JP 7416210B2
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- silicon carbide
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims description 189
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims description 178
- 238000000034 method Methods 0.000 title claims description 69
- 239000007789 gas Substances 0.000 claims description 252
- 238000012545 processing Methods 0.000 claims description 77
- 239000007833 carbon precursor Substances 0.000 claims description 53
- 238000006243 chemical reaction Methods 0.000 claims description 46
- 239000012686 silicon precursor Substances 0.000 claims description 45
- 239000000758 substrate Substances 0.000 claims description 31
- 238000010030 laminating Methods 0.000 claims description 15
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 150000003377 silicon compounds Chemical class 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 6
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 235000012431 wafers Nutrition 0.000 description 70
- ZDWYFWIBTZJGOR-UHFFFAOYSA-N bis(trimethylsilyl)acetylene Chemical group C[Si](C)(C)C#C[Si](C)(C)C ZDWYFWIBTZJGOR-UHFFFAOYSA-N 0.000 description 67
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 53
- 230000000052 comparative effect Effects 0.000 description 23
- 238000011156 evaluation Methods 0.000 description 13
- 238000007789 sealing Methods 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 238000000231 atomic layer deposition Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 10
- 125000000524 functional group Chemical group 0.000 description 10
- 238000010926 purge Methods 0.000 description 10
- 238000011144 upstream manufacturing Methods 0.000 description 10
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- CWMFRHBXRUITQE-UHFFFAOYSA-N trimethylsilylacetylene Chemical group C[Si](C)(C)C#C CWMFRHBXRUITQE-UHFFFAOYSA-N 0.000 description 6
- 229910018540 Si C Inorganic materials 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 238000009832 plasma treatment Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- OCKGFTQIICXDQW-ZEQRLZLVSA-N 5-[(1r)-1-hydroxy-2-[4-[(2r)-2-hydroxy-2-(4-methyl-1-oxo-3h-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]-4-methyl-3h-2-benzofuran-1-one Chemical compound C1=C2C(=O)OCC2=C(C)C([C@@H](O)CN2CCN(CC2)C[C@H](O)C2=CC=C3C(=O)OCC3=C2C)=C1 OCKGFTQIICXDQW-ZEQRLZLVSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
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- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
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- 239000000463 material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
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- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910018557 Si O Inorganic materials 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 239000012039 electrophile Substances 0.000 description 1
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- ULYLMHUHFUQKOE-UHFFFAOYSA-N trimethyl(prop-2-ynyl)silane Chemical group C[Si](C)(C)CC#C ULYLMHUHFUQKOE-UHFFFAOYSA-N 0.000 description 1
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
- H01L21/0234—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour treatment by exposure to a plasma
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- H—ELECTRICITY
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- H01J37/32—Gas-filled discharge tubes
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Description
前記基板を、350℃以上、500℃以下の範囲内の温度に加熱する工程と、
加熱された前記基板に、不飽和炭素結合を有し、窒素原子及び酸素原子を含有しない有機化合物を含む炭素プリカーサのガスを供給する工程と、
加熱された前記基板に、窒素原子及び酸素原子を含有しないケイ素化合物を含むケイ素プリカーサのガスを供給する工程と、
前記不飽和炭素結合を有する有機化合物とケイ素化合物とを熱反応させて、前記基板に前記炭化ケイ素膜となる炭化ケイ素層を積層する工程と、
前記炭化ケイ素層に、水素ガス、希ガス、あるいは水素ガスと希ガスとの混合ガスから選択したいずれか一つのプラズマ形成ガスを励起して得られたプラズマを供給する工程と、を有する。
さらにガス供給系5は、プラズマ形成用のガスである水素(H2)ガスの供給源55を備えている。H2ガス供給源55は、上流側から流量調整部M5及びバルブV5を備えたガス供給路551を介して、例えば炭素プリカーサガスのガス供給路511におけるバルブV1の下流側に接続される。
また、パージガスであるArのバルブV3、V4を開き、供給源53、54から処理容器10内に、合わせて、例えば300sccmの流量で供給する(時刻t0)。Arガスは、シャワーヘッド3を介して処理容器10内に導入され、処理位置にある載置台2上に置かれたウエハWの側方の排気口132に向けて通流し、真空排気路62を介して処理容器10から排出される。
そして時刻t1から設定時間経過後の時刻t2にて、バルブV1をOFFとする。これにより処理容器10内へのBTMSAガスの供給が停止される一方、パージガスであるArガスの供給を継続することにより、処理容器10内に残るBTMSAガスがArガスと置換される。
シャワーヘッド3から導入されたジシランガスは、処理容器10内を排気口132に向けて通流していきながら、ウエハWに吸着されたBTMSAと接触することにより熱反応が進行し、SiCが形成される。バルブV2をOFFすることで、処理容器10内へのジシランガスの供給が停止される一方、パージガスであるArガスの供給を継続することにより、処理容器10内に残るジシランガスがArガスと置換される。
その後BTMSAガス、ジシランガスの供給は行わずに、処理容器10にArガスの供給を継続し、処理容器10内をArガス雰囲気に置換する。さらに時刻t100にてバルブV5を開いて処理容器10へのプラズマ形成用のガスであるH2ガスを例えば2000sccmの流量で供給する。
またSiCの層にプラズマを供給するときに、SiCの層が薄いほど、より確実にSiC結合を形成することができる。そのため炭素プリカーサを供給する工程と、ケイ素プリカーサを供給させる工程と、を繰り返して1nm以下の膜厚の時点でSiCの層にプラズマを供給することが好ましい。
ここでSiCの層が厚くなりすぎてしまう前にプラズマの供給を行うことによって、SiC膜の内部においても官能基の脱離や未結合手同士の結合を確実にさせることができる。この観点から、プラズマ処理の間隔はSiCの層の厚さが例えば1nm以下とする場合を示すことができる。
またプラズマ形成ボックス91の内部には上下方向に延びるガスインジェクタ79が設けられている。ガスインジェクタ79は、例えばガス供給路85を介してプラズマ用ガス例えばH2ガスの供給源851に接続される。ガス供給路85には、上流側から流量調整部M25、バルブV25が介設されている。
アンテナ92に高周波電源94から高周波電力が供給されると、アンテナ92の周囲に電界が形成され、この電界によって、ガスインジェクタ79からプラズマ形成ボックス91内に吐出されたH2ガスがプラズマ化される。
図4のALD法を実施する例を挙げると、初めに複数枚のウエハWを搭載したウエハボート72を反応管71に搬入して反応管71の蓋部76を閉じ、ウエハWを反応管71内に収容する工程を実施する。次いで、反応管71内の真空引きを行い、バルブV22、V24を開いてArガスを供給しながら、反応管71内を圧力目標値例えば1000Pa、設定温度を350℃以上、500℃以下の温度例えば410℃に夫々制御する。
SiC膜の成膜処理を実施した後、反応管71内をウエハWの搬入出時の圧力に復帰させてから、反応管71の蓋部76を開き、ウエハボート72を下降させることによりウエハWを搬出する。
このとき、プラズマ化して供給するガスとしてNH3ガス、N2ガスを選択した場合には、膜中にNを含むSiC膜(SiCN膜)を成膜することができる。またプラズマ化して供給するガスとしてO2ガスを選択した場合には、膜中にOを含むSiC膜(SiOC膜)を成膜することができる。
このようなSiCN膜、SiOC膜を成膜する例においても後述の評価試験に示すように、酸化されにくいSiC膜(SiCN膜、SiOC膜)を成膜することができる。
本開示の成膜方法の評価試験について説明する。図1に示す成膜装置1にて、炭素プリカーサとしてBTMSA、ケイ素プリカーサとしてジシラン、パージガスとしてArガスを用い、実施の形態と同様に図4に示すALD法にてSiC膜を形成した。この時実施の形態に示した通り、ウエハWにBTMSAを吸着させる工程と、BTMSAとジシランとを反応させる工程と、を16回繰り返す毎にH2ガスのプラズマの供給を行い30nmの膜厚に成膜した例を実施例1とした。ウエハWにBTMSAを吸着させる工程と、BTMSAとジシランとを反応させる工程と、の16回繰り返しは、およそ0.5nmの膜厚に相当する。またプラズマの供給をウエハWにBTMSAを吸着させる工程と、BTMSAとジシランとを反応させる工程と、を8回、4回、2回繰り返す毎に行った例を夫々実施例2、3、及び4とした。
さらにSiC層にプラズマを供給しないことを除いて参考例と同様に処理した例を比較例1A、SiC層にプラズマを供給しないことを除いて実施例と同様に処理した例を比較例1Bとした。
O:酸素原子
C1:C-C結合、C-H結合を有する炭素原子
C2:Si-C結合を有する炭素原子
Si1:Si-C結合を有するケイ素原子
Si2:Si-Si結合を有するケイ素原子
Si3:SiOxを有するケイ素原子
さらに実施例1、参考例1~4、及び比較例1A、1Bの各々についてSiC膜の膜密度を測定した。
このことから本開示に係る炭化ケイ素含有膜の成膜方法により酸素が結合しにくいSiC膜を成膜することができると言える。これは、膜中に残存する官能基や未結合手が減少してSi-C結合の割合が上昇したためと推測される。
次いで、図4に示すALD法に代えて図10に示すCVD法を用いて成膜したことを除いて実施例1と同様に処理した例を実施例5とした。実施例5では、4nmのSiC膜を成膜するごとにプラズマ処理を行い、30nmの膜厚に成膜した。
またプラズマの供給をSiCの層が2nm、1nm、0.5nm成膜されるごとに行った例を夫々実施例6~8とした。さらにSiCの層にプラズマ供給する際の各ガスの流量を、H2ガスは50sccm、Arガスは2250sccmとしたことを除いて実施例8と同様に処理した例を実施例9とした。さらにSiCの層にプラズマを供給しなかった例を比較例2とし、比較例2のうち成膜処理後にSiC膜の表面にアモルファスSiの封止膜を成膜した例を比較例2A、封止膜を成膜していない例を比較例2Bとした。
またプラズマ化するガスを、NH3ガス、N2ガス、及びO2ガスのいずれかとし、成膜処理を30秒間行うごとにプラズマの供給を1秒行った点を除いて実施例5と同様に処理を行った例を夫々実施例10、11、及び12とした。また実施例10~12においてSiCX膜を成膜した後、SiCX膜の表面にアモルファスSiの封止膜を20nmの膜厚で成膜した例を夫々参考例10~12とした。
実施例10~12、参考例10~12の各々について成膜後、一定時間大気雰囲気に曝し、その後XPS(X-ray Photoelectron Spectroscopy)によりSiC膜(SiCX膜)の成分を分析した。なお参考例10~12については、大気雰囲気に曝した後、エッチング(Arによるスパッタ)により封止膜の除去を行いSiC膜の成分の分析を行った。図15にXPS分析の結果を示す。図15中O、Si、N、Cは夫々の原子を示している。
このことから成膜処理後にSiCN膜の表面に封止膜を成膜しなくとも成分が変化しにくいSiCX膜を成膜することができることが分かる。従って本開示に係る炭化ケイ素含有膜の成膜方法により酸素が結合しにくいSiCX膜を成膜することができると言える。
次にALD法を用いて成膜した例のうち、実施例1、3及び比較例1B、CVD法を用いて成膜した例のうち実施例5、8及び比較例2Bの各ウエハWについてFT-IR(Fourier Transform Infrared Spectroscopy)を用いてSiC膜の吸光度を測定し、分子構造の分析を行った。図16、図17は、夫々ALD法を用いて成膜した例における光の波数に対する吸光度を示すグラフ、CVD法を用いて成膜した例における光の波数に対する吸光度を示すグラフである。なお図16、図17中(1)~(6)で示す波数の範囲は次の振動を示している。
(1):O-H伸縮振動
(2):C-H伸縮振動
(3):Si-H伸縮振動
(4):C-H変角振動
(5):Si-O伸縮振動
(6):Si-C伸縮振動
また(1)のO-H伸縮振動を示すピークがプラズマ処理によって消えている。これは、酸素の取り込みが抑制されていると推測される。また比較例では、(4)のC-H変角振動を示す波数の吸光度にピークが表れている。これは、比較例1B、2Bでは、純度の高いSiCが形成されているのではなく所々にC-Hや-CH3などの官能基が残されているためと推測される。このような官能基の残存によってSiC膜内に酸素が取り込まれやすくなったり、膜密度が低くなったりしていると推測される。そして実施例のようにプラズマを供給することで、SiC膜の特性を低下させる官能基の脱離や未結合手同士の結合を促進することができ、膜密度の向上や酸化しにくい膜を得ることができると推測される。
8 RF電力供給部
10 処理容器
2 載置台
51 炭素プリカーサの供給源
52 ケイ素プリカーサの供給源
55 プラズマ用ガスの供給源
Claims (10)
- 基板に対して炭化ケイ素膜を形成する方法であって、
前記基板を、350℃以上、500℃以下の範囲内の温度に加熱する工程と、
加熱された前記基板に、不飽和炭素結合を有し、窒素原子及び酸素原子を含有しない有機化合物を含む炭素プリカーサのガスを供給する工程と、
加熱された前記基板に、窒素原子及び酸素原子を含有しないケイ素化合物を含むケイ素プリカーサのガスを供給する工程と、
前記不飽和炭素結合を有する有機化合物とケイ素化合物とを熱反応させて、前記基板に前記炭化ケイ素膜となる炭化ケイ素層を積層する工程と、
前記炭化ケイ素層に、水素ガス、希ガス、あるいは水素ガスと希ガスとの混合ガスから選択したいずれか一つのプラズマ形成ガスを励起して得られたプラズマを供給する工程と、を有する、方法。 - 前記炭素プリカーサは、ケイ素原子またはハロゲン原子を含み、不飽和炭素結合として三重結合を有する、請求項1に記載の方法。
- 前記基板に炭化ケイ素層を積層する工程は、前記炭素プリカーサのガスを供給する工程と、前記ケイ素プリカーサのガスを供給する工程と、を交互に複数回繰り返して実施することと、
前記炭化ケイ素膜は、前記基板に炭化ケイ素層を積層する工程と、前記炭化ケイ素層にプラズマを供給する工程と、を交互に複数回繰り返し実施することにより成膜することと、を有する、請求項1に記載の方法。 - 前記基板に炭化ケイ素層を積層する工程は、前記炭素プリカーサのガスを供給する工程と、前記ケイ素プリカーサのガスを供給する工程と、を並行して行うことにより実施することと、
前記炭化ケイ素膜は、前記基板に炭化ケイ素層を積層する工程と、前記炭化ケイ素層に、プラズマを供給する工程と、を交互に複数回繰り返し実施することにより成膜することと、を有する、請求項1に記載の方法。 - 前記基板に炭化ケイ素層を積層する工程と、前記炭化ケイ素層にプラズマを供給する工程と、を複数回繰り返すにあたって、一回の基板に炭化ケイ素層を積層する工程にて形成される炭化ケイ素層の厚さは1nm以下の膜厚である、請求項3または4に記載の方法。
- 基板に対して炭化ケイ素膜を形成する装置であって、
前記基板を収容するように構成される処理容器と、
前記処理容器に収容ざれた基板を加熱する加熱部と、
前記処理容器に、不飽和炭素結合を有し、窒素原子及び酸素原子を含有しない有機化合物を含む炭素プリカーサのガスを供給するように構成される炭素プリカーサ供給部と、
前記処理容器に、窒素原子及び酸素原子を含有しないケイ素化合物を含むケイ素プリカーサのガスを供給するように構成されるケイ素プリカーサ供給部と、
水素ガス、希ガス、あるいは水素ガスと希ガスとの混合ガスから選択したいずれか一つのプラズマ形成ガスを励起して、前記処理容器内にプラズマを形成するプラズマ形成部と、
制御部と、を有し、
前記制御部は、
前記処理容器に前記基板を収容し、前記基板を、350℃以上、500℃以下の範囲内の温度に加熱するステップと、前記処理容器内の加熱された前記基板に、不飽和炭素結合を有する有機化合物を含む炭素プリカーサのガスを供給するステップと、前記処理容器内の加熱された前記基板に、ケイ素化合物を含むケイ素プリカーサのガスを供給するステップと、前記不飽和炭素結合を有する有機化合物とケイ素化合物とを熱反応させて、前記基板に前記炭化ケイ素膜となる炭化ケイ素層を積層するステップと、前記処理容器内に前記プラズマを形成して、前記炭化ケイ素層にプラズマを供給するステップと、を実行するように構成される、装置。 - 前記炭素プリカーサは、ケイ素原子またはハロゲン原子を含み、不飽和炭素結合として三重結合を有する、請求項6に記載の装置。
- 前記制御部は、
前記基板に炭化ケイ素層を積層するステップにて、前記炭素プリカーサのガスを供給するステップと、前記ケイ素プリカーサのガスを供給するステップと、を交互に複数回繰り返して実施することと、
前記基板に炭化ケイ素層を積層するステップと、前記炭化ケイ素層にプラズマを供給するステップと、を交互に複数回繰り返し実施することにより、前記炭化ケイ素膜を成膜することと、を実行するように構成される、請求項6に記載の装置。 - 前記制御部は、
前記基板に炭化ケイ素層を積層するステップにて、前記炭素プリカーサのガスを供給するステップと、前記ケイ素プリカーサのガスを供給するステップと、を並行して実施することと、
前記基板に炭化ケイ素層を積層するステップと、前記炭化ケイ素層にプラズマを供給するステップと、を交互に複数回繰り返し実施することにより、前記炭化ケイ素膜を成膜することと、を実行するように構成される、請求項6に記載の装置。 - 前記基板に炭化ケイ素層を積層するステップと、前記炭化ケイ素層にプラズマを供給するステップと、を複数回繰り返すにあたって、一回の基板に炭化ケイ素層を積層するステップにて形成される炭化ケイ素層の厚さは1nm以下である、請求項8または9に記載の装置。
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