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Stoichiometry-dependent porosity by ion irradiation: In(1–x)Al(x)Sb films
Journal of Physics and Chemistry of Solids ( IF 4 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.jpcs.2020.109769
Charles A. Bolzan , Danay J. Manzo , Christian Notthoff , Patrick Kluth , Raquel Giulian

Abstract In(1–x)Al(x)Sb films with four Al relative concentrations (0, 20, 30 and 40%) were deposited using magnetron sputtering onto a SiO2/Si substrate and subsequently irradiated with 14 MeV Au6+ ions with fluences in the range of 1 × 1012–3 × 1014 cm−2. Grazing incidence X-ray diffraction analysis showed the formation of a polycrystalline compound structure with a zinc blende phase for all of the In(1–x)Al(x)Sb films. When irradiated, it is easier to amorphize ternary compound (In(1-x)Al(x)Sb) than its binary counterparts (InSb and AlSb), and there was no indication of the amorphous phase of AlSb or any other kind of irradiation-induced damage observed. In(1–x)Al(x)Sb films become porous after irradiation with sufficient fluence for all the Al concentrations studied (except AlSb) and for a given irradiation fluence, the higher the Al concentration in the film, the less porous it became after irradiation. In regard the chemical components on the surface of the films, X-ray photoelectron spectroscopy showed that there was no Al–Sb bonding on the surface and that there was a small increase in the relative amount of oxygen (except for Al 20%) in the irradiated samples when compared to non-irradiated ones.

中文翻译:

离子辐射的化学计量相关孔隙率:In(1-x)Al(x)Sb 薄膜

摘要 使用磁控溅射将具有四种 Al 相对浓度(0、20、30 和 40%)的 In(1-x)Al(x)Sb 薄膜沉积到 SiO2/Si 衬底上,然后用 14 MeV Au6+ 离子辐照,其能量密度为1 × 1012–3 × 1014 cm−2 的范围。掠入射 X 射线衍射分析表明,所有 In(1-x)Al(x)Sb 薄膜都形成了具有闪锌矿相的多晶化合物结构。辐照时,三元化合物 (In(1-x)Al(x)Sb) 比其二元对应物(InSb 和 AlSb)更容易非晶化,并且没有迹象表明 AlSb 或任何其他类型的辐照是非晶相- 观察到的损伤。In(1-x)Al(x)Sb 薄膜在辐照后变得多孔,对于所有研究的 Al 浓度(AlSb 除外)和给定的辐照注量有足够的注量,薄膜中的 Al 浓度越高,辐照后的孔隙越少。对于薄膜表面的化学成分,X 射线光电子能谱表明,表面没有 Al-Sb 键,且氧的相对量(Al 20% 除外)略有增加。辐照样品与未辐照样品相比。
更新日期:2021-01-01
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