Formation and implantation of gold nanoparticles by ArF-excimer laser irradiation of gold-coated float glass
Formation and implantation of gold nanoparticles by ArF-excimer laser irradiation of gold-coated float glass
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DOI：
10.1016/j.jallcom.2017.11.122
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发表时间：
2018-03
影响因子：
6.2
通讯作者：
M. Heinz;V. Srabionyan;L. Avakyan;A. Bugaev;A. V. Skidanenko;V. Pryadchenko;J. Ihlemann;J. Meinertz;C. Patzig;M. Dubiel;L. Bugaev
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文献类型：
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作者：
M. Heinz;V. Srabionyan;L. Avakyan;A. Bugaev;A. V. Skidanenko;V. Pryadchenko;J. Ihlemann;J. Meinertz;C. Patzig;M. Dubiel;L. Bugaev
为了开发用于生产亚微米线图案和等离子体纳米颗粒定向阵列的技术，通过低于溅射涂覆有厚度为70 nm的金层的玻璃的烧蚀阈值的ArF-准分子激光照射（193 nm）来研究金纳米颗粒到浮法玻璃表面中的产生和注入。金粒子的形成通过在λ 550 nm处的特征表面等离子体共振（SPR）峰证实。嵌入在玻璃基质中的金颗粒的SPR峰的强度随着所施加的激光脉冲的数目而增加，表明金纳米颗粒到玻璃表面中的不同程度的注入。据透露，激光注入所产生的金颗粒到玻璃上的锡浴侧支持锡离子的吸收增强。得到了不同注量下SPR参数随激光脉冲数的变化关系。利用X射线衍射和扩展X射线吸收精细结构方法，估算出注入金粒子的平均尺寸为15-20 nm。通过分析（扫描）透射电子显微镜证实了该粒度，但也观察到了一小部分粒度为50 nm的单个颗粒。通过拟合实验消光光谱进一步研究了颗粒的排列，通过多球T矩阵方法直接计算光谱内的颗粒尺寸和颗粒间距离，考虑颗粒可能的团聚。所应用的实验技术提供了在玻璃的近表面区域中的金纳米颗粒阵列的创建，其可以用作玻璃中的基板或核，用于生产以金为核的纳米颗粒，并且SPR特性在宽范围的可见波长内变化。
To develop a technique for the production of submicron line patterns and directed arrays of plasmonic nanoparticles, the generation and implantation of gold nanoparticles into float glass surfaces was studied by means of ArF-excimer laser irradiation (193 nm) below the ablation threshold of the glass which was sputter coated with a gold layer with a thickness of 70 nm. The formation of gold particles was confirmed by the characteristic surface plasmon resonance (SPR) peak at ∼550 nm. The intensity of the SPR peak of gold particles embedded in the glass matrix increases with the number of applied laser pulses, indicating a different degree of implantation of the gold nanoparticles into the glass surface. It was revealed that the laser implantation of the generated gold particles into the glass is supported on the tin-bath side by the enhanced absorption of tin ions. The dependences of SPR parameters upon the number of laser pulses at different fluences were obtained. Using the methods of X-ray diffraction and extended X-ray absorption fine structure, the mean size of implanted gold particles was estimated at 15–20 nm. This particle size was confirmed by analytical (scanning) transmission electron microscopy, but a small fraction of single particles with a size of ∼50 nm have also been observed. The particles arrangement was further examined by the fitting of experimental optical extinction spectra, varying the particles sizes and interparticle distances within the direct calculations of spectra by the multi-spheres T-matrix method, considering the possible agglomerations of particles. The applied experimental technique provides the creation of arrays of gold nanoparticles in the near-surface region of the glass, which can be used as the substrates or nuclei in the glass for producing bimetallic nanoparticles with gold as the core and SPR characteristics varied in a wide range of visual wavelengths.