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首页> 外文期刊>Beilstein Journal of Nanotechnology >Fabrication of silver nanoisland films by pulsed laser deposition for surface-enhanced Raman spectroscopy
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Fabrication of silver nanoisland films by pulsed laser deposition for surface-enhanced Raman spectroscopy

机译：脉冲激光沉积制备银纳米岛膜以增强表面拉曼光谱

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The results of studies on the fabrication and characterization of silver nanoisland films (SNIFs) using pulsed laser deposition (PLD) and the evaluation of these films as potential surface-enhanced Raman scattering (SERS) substrates are reported. The SNIFs with thicknesses in a range of 4.7 ± 0.2 nm to 143.2 ± 0.2 nm were deposited under different conditions on silicon substrates. Size and morphology of the fabricated silver nanoislands mainly depend on the substrate temperature, and number and energy of the laser pulses. SERS properties of the fabricated films were evaluated by measuring SERS spectra of para-mercaptoaniline (pMA) molecules adsorbed on them. SERS enhancement factors are shown to depend on the SNIF morphology, which is modified by changes of the deposition conditions. The highest enhancement factor in the range of 10sup5/sup was achieved for SNIFs that have oval and circular silver nanoislands with small distances between them.
机译：报道了使用脉冲激光沉积（PLD）制备和表征银纳米岛膜（SNIF）的研究结果，并对这些膜作为潜在的表面增强拉曼散射（SERS）基底进行了评估。在不同条件下，将厚度为4.7±0.2 nm至143.2±0.2 nm的SNIF沉积在硅基板上。所制造的银纳米岛的尺寸和形态主要取决于衬底温度以及激光脉冲的数量和能量。通过测量吸附在其上的对巯基苯胺（pMA）分子的SERS光谱来评估制成膜的SERS性能。显示出SERS增强因子取决于SNIF形态，该SNIF形态通过沉积条件的改变而改变。对于具有椭圆形和圆形银纳米岛且它们之间的距离很小的SNIF，实现了10 5 范围内的最高增强因子。

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