JP6267080B2 - シリコン窒化物膜の成膜方法および成膜装置 - Google Patents
シリコン窒化物膜の成膜方法および成膜装置 Download PDFInfo
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- JP6267080B2 JP6267080B2 JP2014170202A JP2014170202A JP6267080B2 JP 6267080 B2 JP6267080 B2 JP 6267080B2 JP 2014170202 A JP2014170202 A JP 2014170202A JP 2014170202 A JP2014170202 A JP 2014170202A JP 6267080 B2 JP6267080 B2 JP 6267080B2
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- silicon
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- nitride film
- film
- silicon nitride
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- 238000000034 method Methods 0.000 title claims description 155
- 229910052581 Si3N4 Inorganic materials 0.000 title claims description 139
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 title claims description 139
- 239000007789 gas Substances 0.000 claims description 291
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 281
- 229910052710 silicon Inorganic materials 0.000 claims description 279
- 239000010703 silicon Substances 0.000 claims description 279
- 238000012545 processing Methods 0.000 claims description 226
- 238000005121 nitriding Methods 0.000 claims description 77
- 230000008569 process Effects 0.000 claims description 75
- 238000000354 decomposition reaction Methods 0.000 claims description 63
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 56
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 51
- 230000001737 promoting effect Effects 0.000 claims description 49
- 229910052796 boron Inorganic materials 0.000 claims description 47
- 230000007246 mechanism Effects 0.000 claims description 38
- 230000015572 biosynthetic process Effects 0.000 claims description 30
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- 238000001179 sorption measurement Methods 0.000 claims description 16
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 13
- 229910000085 borane Inorganic materials 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
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- 238000004519 manufacturing process Methods 0.000 claims description 5
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- 230000000977 initiatory effect Effects 0.000 claims 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
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- 239000006185 dispersion Substances 0.000 description 9
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
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- 239000001257 hydrogen Substances 0.000 description 5
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- 125000004433 nitrogen atom Chemical group N* 0.000 description 5
- 238000005979 thermal decomposition reaction Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
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- 230000000694 effects Effects 0.000 description 4
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- 150000003377 silicon compounds Chemical class 0.000 description 4
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
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- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
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- 238000007790 scraping Methods 0.000 description 2
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- 238000004904 shortening Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 150000002429 hydrazines Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007431 microscopic evaluation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- WXRGABKACDFXMG-UHFFFAOYSA-N trimethylborane Chemical compound CB(C)C WXRGABKACDFXMG-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Description
(1) DCSガスおよびBCl3ガスを、処理室内に同時に供給してボロン含有シリコン膜を形成する
(2) 処理室内をパージする
(3) 窒化ガスとしてアンモニア(NH3)を処理室内に供給し、ボロン含有シリコン膜をプラズマ窒化することでSiBN膜を形成する
(4) 処理室内をパージする
以上の(1)〜(4)の工程を繰り返すことで、被処理体の被処理面上に、SiBN膜を形成する。
・プラズマエンハンストCVD法(PECVD)を用いて形成したSiBN膜に比較して、ステップカバレージが良好となること
・典型的なシリコン窒化膜(SiNx膜)や典型的な窒化ホウ素膜(BN膜)に比較して、反応性イオンエッチング法(RIE)によるエッチングがしやすいこと
・典型的なBN膜に比較して、ウェットエッチング耐性に優れること
・典型的なSiNx膜に比較して、比誘電率が低くなること
などの利点が得られる、とされている。
(1) DCSガスを処理室内に供給してシリコン膜を形成する
(2) 処理室内をパージする
(3) 窒化ガスとしてNH3を処理室内に供給し、シリコン膜を窒化、好ましくはプラズマ窒化することでシリコン窒化膜を形成する
(4) 処理室内をパージする
(5) ボロン原料ガスとしてBCl3を処理室内に供給し、ボロンをシリコン窒化膜に添加してSiBN膜を形成する
(6) 処理室内をパージする
(7) 窒化ガスとしてNH3を処理室内に供給し、ボロン含有シリコン窒化膜を、プラズマによって活性化されたNH3によって、さらにプラズマ窒化するとともに、SiBN膜からBCl3由来の残留Cl成分を除去する
(8) 処理室内をパージする
以上の(1)〜(8)の工程を繰り返すことで、被処理体の被処理面上に、SiBN膜を形成する。
・プラズマによって活性化されたNH3によって、さらにプラズマ窒化しない場合に比較して、エッチング耐性に優れること
・典型的なSiNx膜に比較して、比誘電率が低くなること
などの利点が得られる、とされている。
(1) SiH4ガスを処理室内に供給してシリコン膜を形成する
(2) 処理室内をパージする
(3) BCl3ガスを処理室内に供給し、ボロンをシリコン膜の表面に吸着させ、ボロン含有シリコン膜を形成する
(4) 処理室内をパージする
以上の(1)〜(4)の工程を繰り返すことで、被処理体の被処理面上に、ボロン含有シリコン膜を形成する。
・ボロン原子による触媒作用が働き、SiH4ガス単体でのシリコン膜の成膜に比較して、より低温、例えば、350℃程度の温度でシリコン膜を成膜できること
・低温で成膜しても、ステップカバレージが良好となること
などの利点が得られる、とされている。
<成膜方法>
図1はこの発明の第1の実施形態に係るシリコン窒化物膜の成膜方法の一例を示す流れ図、図2A〜図2Nはその成膜方法の主要な工程を示す断面図である。
モノシラン流量: 1000sccm
処 理 時 間: 30sec
処 理 温 度: 200℃
処 理 圧 力: 133Pa(1Torr)
(本明細書では、1Torrを133Paと定義する。)
である。
Si2H6ガス
Si3H8ガス
などのシリコン数が2以上の、いわゆる高次シランガスを用いるようにしてもよい。本明細書においては、シラン系ガスを、シリコン数が1のモノシランガス、およびシリコン数が2以上の高次シランガスの双方を含むもの、と定義する。
SiH3Clガス
SiH2Cl2ガス
SiHCl3ガス
Si2H5Clガス
Si2H4Cl2ガス
Si2H3Cl3ガス
Si2H2Cl4ガス
Si2HCl5ガス
などのガスも用いることができる。
ジボラン流 量: 200sccm
処 理 時 間: 30sec
処 理 温 度: 200℃
処 理 圧 力: 133Pa(1Torr)
である。
BH3(モノボラン)ガス
などを用いることも可能である。また、ボロン数が2以上の、いわゆる高次ボランガスについても、B2H6ガスに限られるものではない。本明細書においては、ボラン系ガスを、ボロン数が1のモノボランガス、およびボロン数が2以上の高次ボランガスの双方を含むもの、と定義する。
BCl3ガス
(B(C2H5))3ガス
なども用いることができる。
アンモニア流量: 1000sccm
処 理 時 間: 10sec
処 理 温 度: 200℃
処 理 圧 力: 133Pa(1Torr)
高周波電界 : オン
である。
ヒドラジン(N2H4)
ヒドラジン誘導体
などを用いることも可能である。もちろん窒素ガス単体でもよい。
無声放電
ラジアルロッドスロットアンテナ
などを用いてもよい。
図3は成膜シーケンスを示すタイムチャートである。図3は、第1の実施形態に係るシリコン窒化物膜の成膜方法と、比較例に係るシリコン窒化物膜の成膜方法とを時間軸上で対比させたものである。比較例は、1サイクルを“1回のシリコン原料ガスおよび分解促進ガスの供給”と“1回の窒化ガスの供給”とし、これを複数回繰り返す成膜方法である。なお、シリコン原料ガスの供給時間、分解促進ガスの供給時間、窒化ガスの供給時間、パージ時間については、第1の実施形態および比較例の双方とも同じと仮定する。
比較例 : 窒化ガスを60回供給
第1の実施形態: 窒化ガスを20回供給
となる。したがって、第1の実施形態によれば、比較例に比較して窒化ガスの供給およびパージをそれぞれ40回分省略でき、その分、プロセス時間を短縮できる。
比較例 : 窒化ガスを120回供給
第1の実施形態: 窒化ガスを40回供給
となる。この場合には、窒化ガスの供給およびパージをそれぞれ80回分省略できることとなる。
比較例において、プロセス時間を短縮するには、シリコン原料ガスの供給1回当たりのシリコン膜の成膜量を高め、シリコン膜の膜厚が設計値に達するまでに必要なサイクル数を減じればよい。そのためには、成膜温度をシリコンが化学的気相成長しだす温度まで高めて成長レートを上げればよい。成長レートと温度との間には、温度が上昇するにつれて成長レートが高まる、という傾向がある。図4に温度とシリコンの成長レートとの一関係例を示す。
比較例において、シリコンの成膜温度をCVD成長する温度にまで引き上げない場合、形成される第1層シリコン膜4−1の膜厚は大変薄いものとなる。このため、第1層シリコン膜4−1を窒化すると、図6Aに示すように、窒素原子Nが第1層シリコン膜4−1を突き抜け、下地に達してしまう可能性がある。窒素原子Nの突き抜けが発生すると、下地がシリコン基板1であったならば、シリコン基板1の被処理面近傍の領域は、シリコン窒化物12に変わってしまう。また、下地がシリコン酸化物であったならば、その被処理面近傍の領域は、シリコン酸窒化物に変わってしまう。つまり、比較例においては、下地を他の物質に変化させる可能性が高い、という事情がある。
シリコン窒化物膜の化学量論組成比は“Si:N=3:4(Si3N4)”である。しかし、シリコン窒化物膜は、その形成の仕方によって様々な組成比をとり得る。そして、シリコン窒化物膜の窒素濃度、即ち、シリコン窒化物膜の組成は、例えば、膜ストレスを左右する。例えば、Si3N4の組成に対してシリコンリッチな組成の場合、膜ストレスは小さく、反対にSi3N4の組成に対して窒素リッチな組成の場合、膜ストレスは大きくなる、といった具合である。
次に、成膜温度帯について説明する。
図4を参照して説明したように、シリコン膜の成膜に際し、400℃未満の温度帯においては成長レートに僅かな“揺らぎ”がある。これは、400℃未満の温度帯においては、吸着のみ(あるいは吸着が支配的)な温度帯と、吸着+堆積が起こる温度帯(吸着からCVD成長へ遷移する遷移温度帯)があるもの、と推察される。400℃以上となると、堆積、即ち、ほぼ完全なシリコンのCVD成長が始まる(SiH4ガス単独でも、Siの堆積が可能)。
次に、分解促進ガスについて説明する。
上述の通り、ステップ1におけるシリコン膜4(4−1、4−2、…)の成膜温度を、CVD成長開始温度未満の温度に引き下げるには、ステップ3に示したように、シリコン原料ガスの分解を促進させる物質を含む分解促進ガスを供給することが好ましい。分解促進ガスを供給し、吸着したSiH4と、分解を促進させる物質を含む分解促進ガス、例えば、B2H6とを反応させてSiを吸着又は堆積させる。これにより、分解促進ガスを供給しない場合に比較して、シリコン原料ガスの分解、例えば、熱分解をより低温で発生でき、低温でSiを吸着又は堆積させることができる。
次に、シリコン膜の窒化処理について説明する。
第1の実施形態においては、シリコン膜4(4−1、4−2、…)の窒化処理の際、窒化ガスに、熱以外のエネルギーを印加するようにしている。これにより、低温での窒化、例えば、シリコン膜4(4−1、4−2、…)の形成処理と同じ温度(例えば200℃)での窒化も可能とされる。具体的には、第1の実施形態においては、窒化ガスに電気的なエネルギー、例えば高周波パワーをさらに印加し、処理室内において、活性な窒素、例えば、少なくとも窒素ラジカルを生成する。そして、処理室内において、少なくとも生成された窒素ラジカルをシリコン膜4(4−1、4−2、…)と反応させ、シリコン膜4(4−1、4−2、…)を窒化する。
Si + 4Cl → SiCl4↑
(a) シリコン原料ガスには、ハロゲン元素を含まないシリコンの化合物ガスを用いる
(b) 分解促進ガスには、ハロゲン元素を含まない化合物ガスを用いる
これら(a)、(b)の少なくともいずれかを採用する。好ましくは(a)、(b)双方を採用するとよい。
(c) シリコン原料ガスには、シラン系ガスを用いる
(d) 分解促進ガスには、ボラン系ガスを用いる
これら(c)、(d)を同時に採用すると、上記(a)、(b)の双方が実施されるばかりでなく、シリコン膜を、事実上、シリコン、水素およびボロンの3つの元素のみで構成できる、という利点をも得ることができる。
次に、SiN膜、SiBN膜の作り分け方について説明する。
分解促進ガスにボロン化合物ガスを用いると、成膜されるシリコン窒化物膜5中にボロンを含有させることができる。ボロンの含有量を制御すると、シリコン窒化物膜5は、SiN膜、SiBN膜のいずれにも作り分けることが可能である。
次に、シリコン膜4(4−1、4−2、…)の成膜温度と窒化温度とについて説明する。
シリコン膜4(4−1、4−2、…)の形成処理に際し、分解促進ガスを用いること、およびシリコン膜4(4−1、4−2、…)の窒化処理に際し、窒化ガスに、熱以外のエネルギーを印加することの双方を兼ね備えると、成膜温度および窒化温度の双方を、例えば、400℃未満といった低い温度に引き下げることができる。
段落0083において、第1の実施形態に係るシリコン窒化物膜の成膜方法においては、ステップ1とステップ3とを入れ換えることが可能であることを説明した。ステップ1とステップ3とを入れ換えた場合の具体的な一例が、第2の実施形態である。
次に、この発明の第1、第2の実施形態に係るシリコン窒化物膜の成膜方法を実施することが可能な成膜装置について説明する。
図10はこの発明の第1、第2の実施形態に係るシリコン窒化物膜の成膜方法を実施することが可能な第2例に係る成膜装置を概略的に示す水平断面図である。
次に、水平型バッチ式成膜装置200を用いて成膜されたシリコン窒化物膜の膜厚の温度依存性について説明する。
次に、水平型バッチ式成膜装置200を用いて成膜されたシリコン窒化物膜の膜質について説明する。
次に、水平型バッチ式成膜装置の変形例について説明する。
その他、この発明はその要旨を逸脱しない範囲で様々に変形することができる。
Claims (18)
- 被処理体の被処理面上にシリコン窒化物膜を成膜するシリコン窒化物膜の成膜方法であって、
(1) 前記被処理面に向け、シリコンを含むシリコン原料ガスの分解を促進させる物質を含む分解促進ガスを供給した後、前記被処理面に向け、前記シリコンを含むシリコン原料ガスを供給する工程と、
(2) 前記被処理面に向け、窒素を含む窒化ガスを供給する工程と、を備え、
前記(1)工程から前記(2)工程までのシーケンスを1サイクルとし、
前記1サイクルをmサイクル行い(ただし、mは1回以上の有限値)、シリコン窒化物膜を、前記被処理面上に成膜することを特徴とするシリコン窒化物膜の成膜方法。 - 前記(1)工程は、被処理面上へのシリコンの吸着が始まる吸着開始温度以上、シリコンのCVD成長が始まるCVD成長開始温度未満の温度帯で行うことを特徴とする請求項1に記載のシリコン窒化物膜の成膜方法。
- 前記(1)工程は、100℃以上400℃未満の温度帯で行うことを特徴とする請求項2に記載のシリコン窒化物膜の成膜方法。
- 前記(1)工程は、被処理面上へのシリコンの吸着が始まる吸着開始温度以上、シリコンのCVD成長への遷移が始まるCVD成長遷移開始温度未満の温度帯で行うことを特徴とする請求項1に記載のシリコン窒化物膜の成膜方法。
- 前記(1)工程は、シリコンの吸着で行うことを特徴とする請求項4に記載のシリコン窒化物膜の成膜方法。
- 前記(1)工程は、100℃以上300℃未満の温度帯で行うことを特徴とする請求項4又は請求項5に記載のシリコン窒化物膜の成膜方法。
- 前記分解促進ガスは、ハロゲン元素を含まないことを特徴とする請求項1から請求項6のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 前記シリコン原料ガスの分解を促進させる物質は、ボロンであることを特徴とする請求項1から請求項7のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 前記分解促進ガスは、ボラン系ガスであることを特徴とする請求項8に記載のシリコン窒化物膜の成膜方法。
- 前記シリコン原料ガスは、ハロゲン元素を含まないことを特徴とする請求項1から請求項9のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 前記シリコン原料ガスは、シラン系ガスであることを特徴とする請求項1から請求項10のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 前記(1)工程から前記(2)工程を同一温度で行うことを特徴とする請求項1から請求項11のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 前記窒化ガスにはエネルギーを印加して活性な窒素を生成し、前記活性な窒素を前記被処理面に向け、供給することを特徴とする請求項1から請求項12のいずれか一項に記載のシリコン窒化物膜の成膜方法。
- 被処理体の被処理面上にシリコン窒化物膜を成膜する成膜装置であって、
被処理体に、成膜処理を施す処理室と、
前記処理室に、シリコン原料ガスを供給するシリコン原料ガス供給機構と、
前記処理室に、分解促進ガスを供給する分解促進ガス供給機構と、
前記処理室に、窒化ガスを供給する窒化ガス供給機構と、
前記処理室を加熱する加熱機構と、
前記成膜処理に際し、請求項1から請求項12のいずれか一項に記載のシリコン窒化物膜の成膜方法が実行されるように、前記シリコン原料ガス供給機構、前記分解促進ガス供給機構、前記窒化ガス供給機構、および前記加熱機構を制御する制御部と
を具備することを特徴とする成膜装置。 - 前記窒化ガスに少なくとも窒素ラジカルが生成されるようにエネルギーを印加するエネルギー印加機構を、さらに備え、
前記制御部は、請求項13に記載のシリコン窒化物膜の成膜方法が実行されるように、前記エネルギー印加機構を制御することを特徴とする請求項14に記載の成膜装置。 - 前記処理室内には、前記被処理体が高さ方向に沿って複数枚収容されることを特徴とする請求項14又は請求項15に記載の成膜装置。
- 前記処理室内には、前記被処理体が回転するターンテーブル上に周方向に沿って複数枚収容され、
前記処理室の内部は、請求項1から請求項12のいずれか一項に記載のシリコン窒化物膜の成膜方法が実行されるように、複数の処理ステージに分割されていることを特徴とする請求項14に記載の成膜装置。 - 前記処理室内には、前記被処理体が回転するターンテーブル上に周方向に沿って複数枚収容され、
前記処理室の内部は、請求項13に記載のシリコン窒化物膜の成膜方法が実行されるように、複数の処理ステージに分割されていることを特徴とする請求項15に記載の成膜装置。
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