首页> 外文会议>Silicon compatible materials, processes, and technologies for advanced integrated circuits and emerging applications 6 >Rapid In-Situ Carbon and Oxygen Cleaning of ln_0.53Ga_0.47As(001) and Si_0.5Ge_0.5(110) Surfaces via a H_2 RF Downstream Plasma
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Rapid In-Situ Carbon and Oxygen Cleaning of ln_0.53Ga_0.47As(001) and Si_0.5Ge_0.5(110) Surfaces via a H_2 RF Downstream Plasma

机译:通过H_2 RF下游等离子体对ln_0.53Ga_0.47As(001)和Si_0.5Ge_0.5(110)表面进行快速原位碳和氧清洁

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摘要

The In_0.53Ga_0.47As(001) and Si_0.5Ge_0.5(110) surfaces were cleaned using a downstream RF plasma. On the air-exposed In_0.53Ga_0.47As(001) surface, a 2 second 100 millitorr H_2 plasma dose fully removed carbon and oxygen. On the ex-situ wet cleaned Si_0.5Ge_0.5(110) surface, nearly all carbon and oxygen are removed via a 2 second exposure of 5% H_2 in Ar plasma. To prevent oxygen deposition from the plasma tube while maximizing the atomic H flux, for Si_0.5Ge_0.5(110), the plasma power, pressure, and gas composition must be controlled. The Si_0.5Ge_0.5(110) surface is more sensitive than the In_0.53Ga_0.47As(001) surface to trace oxygen in the plasma stream consistent with the higher heat of formation per Si of SiO_2 than the heat of formation per Ga of Ga_2O_3. The higher heat of formation of SiO_2 is expected to both increase oxygen adsorption and prevent the atomic H from forming volatile products with SiO_2 on Si_0.5Ge_0.5(110), in contrast to In_0.53Ga_0.47As(001).
机译:使用下游RF等离子体清洁In_0.53Ga_0.47As(001)和Si_0.5Ge_0.5(110)表面。在空气暴露的In_0.53Ga_0.47As(001)表面上,使用2秒100毫托H_2等离子体剂量,可以完全除去碳和氧。在异位湿法清洁的Si_0.5Ge_0.5(110)表面上,通过将Ar等离子体中5%H_2暴露2秒,几乎除去了所有碳和氧。为了在最大程度提高原子H通量的同时防止氧从等离子体管中沉积,对于Si_0.5Ge_0.5(110),必须控制等离子体功率,压力和气体成分。 Si_0.5Ge_0.5(110)表面比In_0.53Ga_0.47As(001)表面更敏感,以追踪等离子体流中的氧气,这与SiO_2的每Si形成的热量高于每Ga的形成热有关。 Ga_2O_3。与In_0.53Ga_0.47As(001)相比,预计形成SiO_2的热量较高,既可以增加氧的吸附,又可以防止原子H在SiO_0.5Ge_0.5(110)上与SiO_2形成挥发性产物。

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  • 会议地点 San Diego(US)
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    Materials Science and Engineering Program, University of California San Diego, La Jolla, California 92093, USA;

    Materials Science and Engineering Program, University of California San Diego, La Jolla, California 92093, USA;

    PIE Scientific LLC, San Mateo, California 94402, USA;

    Ingram School of Engineering, Texas State University, 601 University, San Marcos, Texas 78666, USA;

    Applied Materials Inc, 974 E Arques Ave, Sunnyvale, California 94085, USA;

    Applied Materials Inc, 974 E Arques Ave, Sunnyvale, California 94085, USA;

    GLOBALFOUNDRIES, 400 Stone Break Rd Extension, Malta, New York 12020, USA;

    GLOBALFOUNDRIES, 400 Stone Break Rd Extension, Malta, New York 12020, USA;

    GLOBALFOUNDRIES, 400 Stone Break Rd Extension, Malta, New York 12020, USA;

    Department of Chemistry, University of California San Diego, La Jolla, California 92093, USA;

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