JP7635126B2 - SiOCフィルムの酸化の低減 - Google Patents
SiOCフィルムの酸化の低減 Download PDFInfo
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Description
[0001]分野
[0002]本開示の実施形態は、一般に、流動性ギャップ-フィルフィルムおよびその製造プロセスに関し、より詳細には、シリコンオキシカーバイド(SiOC)ベースの流動性フィルムおよびその中での酸化の低減に関する。
[0004]シャロートレンチアイソレーション(STI)、金属間誘電体(IMD)層、層間誘電体(ILD)層、プレメタル誘電体(PMD)層、パッシベーション層などを含む小型半導体デバイスの製造において、高アスペクト比のギャップを絶縁材料で埋める必要がある。トランジスタのフィーチャサイズ、ならびにそれらの間の空間が、20nm以下に低下し、熱収支が削減されるため、このような微細で高アスペクト比の機能をボイドフリーで充填することは、ますます困難になっている。ギャップとトレンチを埋めるために開発された技術の1つでは、液相の誘電体前駆体がギャップとトレンチ中に供給され、次に、通常、高温での蒸気アニーリング、ホットプレス、および焼結によって、固相の誘電体フィルム(流動性フィルムまたはギャップ-フィルフィルムと呼ばれる)に硬化される。多くの場合、誘電体フィルム形成プロセスで使用される誘電体前駆体の化学構造には、除去可能な化学基が含まれ、硬化した誘電体フィルムに細孔を残したり、誘電体フィルムの収縮を引き起こしたりする。さらに、高温での従来の硬化プロセスは、必然的に誘電体フィルム内の酸化を増加させる。したがって、相変化メモリおよび集積回路のラインのバックエンド(BEOL)部分などのデバイスでの用途のために、ギャップやトレンチのボイド-フリーの充填と低減された酸化を確実にするために、弾性率と粘度が低く柔らかい流動性フィルムを形成するには、化学処理方法を慎重に選択することが必要とされている。
誘電体前駆体OMCTSは、DSCHのチャネルあたり、1分当たり約0.25グラム(g/分)と約3g/分との間の流量で処理チャンバに供給され得る。アルゴン(Ar)またはヘリウム(He)などのキャリアガスは、DSCHのチャネルあたり250sccmと約5000sccmとの間の流量で処理チャンバ中に流すことができる。
Claims (7)
- パターン化された基板の表面上に形成されたトレンチの上にlow-k流動性誘電体膜を形成する方法であって:
ケイ素および炭素含有前駆体を第1の流量で第1の基板処理チャンバの基板処理領域に第1の期間および第2の期間供給すること;
遠隔プラズマに点火しながら、酸素含有前駆体をプラズマ源の遠隔プラズマ領域に流して、ラジカル酸素前駆体を形成すること;
第1の期間が経過した後、第2の期間中に、ラジカル酸素前駆体を第2の流量で基板処理領域に流すこと;
ケイ素および炭素含有前駆体を、第2の期間が経過した後、第3の期間、電磁放射に曝すことであって、電磁放射は、第1の波長および第1の電力で提供される、ケイ素および炭素含有前駆体を曝すこと;および
第2の期間が経過した後、パターン化された基板を第1の基板処理チャンバから第2の基板処理チャンバに移すことを含み、
ケイ素および炭素含有前駆体を第3の期間電磁放射に曝す方法が、第2の基板処理チャンバで実行され、
第2の基板処理チャンバの基板処理領域は、第3の期間中、1Torrと600Torrとの間の圧力に維持され、
パターン化された基板が、第3の期間中150℃と500℃との間の温度に維持される、方法。 - ケイ素および炭素含有前駆体が、オクタメチルシクロテトラシロキサン(OMCTS)、テトラメチルシクロテトラシロキサン(TMCTS)、ヘキサメチルジシロキサン(HMDSO)、テトラメチルジシロキサン(TMDSO)、ジメチルジシロキサン(DMDSO)またはジメチルジクロロシラン(SiR2Cl2)を含み、
ラジカル酸素前駆体が、O2、H2O、O3、H2O2、N2O、NOまたはNO2を含む、請求項1に記載の方法。 - 第2の期間中にラジカル酸素前駆体を基板処理領域に流すことが:
第1の基板処理チャンバの基板処理領域の圧力を0.5Torrと3.0Torrとの間の圧力に制御すること;および
パターン化された基板の温度を40℃と150℃との間の温度に制御すること、
をさらに含む、請求項1に記載の方法。 - パターン化された基板が、チタン(Ti)、タンタル(Ta)、タングステン(W)、コバルト(Co)、銅(Cu)、およびアルミニウム(Al)からなる群から選択される金属を含む、請求項1に記載の方法。
- パターン化された基板の表面上に形成されたトレンチの上にlow-k流動性誘電体膜を形成する方法であって:
ケイ素および炭素含有前駆体を第1の流量で第1の基板処理チャンバの基板処理領域に第1の期間および第2の期間供給すること;
遠隔プラズマに点火しながら、酸素含有前駆体をプラズマ源の遠隔プラズマ領域に流して、ラジカル酸素前駆体を形成すること;
第1の期間が経過した後、第2の期間中に、ラジカル酸素前駆体を第2の流量で基板処理領域に流すこと;および
ケイ素および炭素含有前駆体を、第2の期間が経過した後、第3の期間、電磁放射に曝すことであって、電磁放射は、第1の波長および第1の電力で提供される、ケイ素および炭素含有前駆体を曝すことを含み、
パターン化された基板が、BCTe、GeSiAsTe、GeAsSe、およびSeAsGeSiからなる群から選択される材料を含む、方法。 - パターン化された基板の少なくとも一部が、ゲルマニウム、アンチモン、およびテルルを含む材料を含む、請求項1に記載の方法。
- パターン化された基板の表面上に形成されたトレンチの上にlow-k流動性誘電体膜を形成する方法であって:
ケイ素および炭素含有前駆体を第1の流量で第1の基板処理チャンバの基板処理領域に第1の期間および第2の期間供給すること;
遠隔プラズマに点火しながら、酸素含有前駆体をプラズマ源の遠隔プラズマ領域に流して、ラジカル酸素前駆体を形成すること;
第1の期間が経過した後、第2の期間中に、ラジカル酸素前駆体を第2の流量で基板処理領域に流すこと;および
ケイ素および炭素含有前駆体を、第2の期間が経過した後、第3の期間、電磁放射に曝すことであって、電磁放射は、第1の波長および第1の電力で提供される、ケイ素および炭素含有前駆体を曝すことを含み、
第1の流量が、1分当たり0.25グラム(g/分)と1分当たり3グラム(g/分)との間であり、第1の期間が1秒と600秒との間であり、
第2の流量が、100sccmと2000sccmとの間であり、第2の期間が1秒と1800秒との間であり、
第1の波長が、240nmと600nmとの間であり、第3の期間が10秒と30分との間である、方法。
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| US201862783200P | 2018-12-20 | 2018-12-20 | |
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| US16/673,943 | 2019-11-04 | ||
| US16/673,943 US11133177B2 (en) | 2018-12-20 | 2019-11-04 | Oxidation reduction for SiOC film |
| PCT/US2019/060785 WO2020131249A1 (en) | 2018-12-20 | 2019-11-11 | Oxidation reduction for sioc film |
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| JP2011181563A (ja) | 2010-02-26 | 2011-09-15 | Fujifilm Corp | トレンチ埋め込み用組成物 |
| US20150196933A1 (en) | 2014-01-13 | 2015-07-16 | Applied Materials, Inc. | Carbon dioxide and carbon monoxide mediated curing of low k films to increase hardness and modulus |
| US20160020089A1 (en) | 2014-07-16 | 2016-01-21 | Applied Materials, Inc. | Low-k dielectric gapfill by flowable deposition |
| US20160093488A1 (en) | 2014-09-30 | 2016-03-31 | Applied Materials, Inc. | Flowable low-k dielectric gapfill treatment |
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| US8465991B2 (en) * | 2006-10-30 | 2013-06-18 | Novellus Systems, Inc. | Carbon containing low-k dielectric constant recovery using UV treatment |
| US8741788B2 (en) * | 2009-08-06 | 2014-06-03 | Applied Materials, Inc. | Formation of silicon oxide using non-carbon flowable CVD processes |
| TWI522490B (zh) * | 2012-05-10 | 2016-02-21 | 應用材料股份有限公司 | 利用微波電漿化學氣相沈積在基板上沈積膜的方法 |
| JP6246558B2 (ja) | 2013-10-29 | 2017-12-13 | 東京エレクトロン株式会社 | シリコン酸炭窒化物膜、シリコン酸炭化物膜、シリコン酸窒化物膜の成膜方法および成膜装置 |
| KR102491577B1 (ko) | 2015-09-23 | 2023-01-25 | 삼성전자주식회사 | 유전 층을 갖는 반도체 소자 형성 방법 및 관련된 시스템 |
| US20170125241A1 (en) * | 2015-10-30 | 2017-05-04 | Applied Materials, Inc. | Low temp single precursor arc hard mask for multilayer patterning application |
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| JP2011181563A (ja) | 2010-02-26 | 2011-09-15 | Fujifilm Corp | トレンチ埋め込み用組成物 |
| US20150196933A1 (en) | 2014-01-13 | 2015-07-16 | Applied Materials, Inc. | Carbon dioxide and carbon monoxide mediated curing of low k films to increase hardness and modulus |
| US20160020089A1 (en) | 2014-07-16 | 2016-01-21 | Applied Materials, Inc. | Low-k dielectric gapfill by flowable deposition |
| US20160093488A1 (en) | 2014-09-30 | 2016-03-31 | Applied Materials, Inc. | Flowable low-k dielectric gapfill treatment |
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| KR102892109B1 (ko) | 2025-11-26 |
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