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首页> 外文期刊>ACS applied materials & interfaces >Role of Sputter Deposition Rate in Tailoring Nanogranular Gold Structures on Polymer Surfaces
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Role of Sputter Deposition Rate in Tailoring Nanogranular Gold Structures on Polymer Surfaces

机译：溅射沉积速率在聚合物表面纵向纳米金结构中的作用

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摘要

The reproducible low-cost fabrication of functional polymer metal interfaces via self-assembly is of crucial importance in organic electronics and organic photovoltaics. In particular, submonolayer and nanogranular systems expose highly interesting electrical, plasmonic, and catalytic properties. The exploitation of their great potential requires tailoring of the structure on the nanometer scale and below. To obtain full control over the complex nanostructural evolution at the polymer metal interface, we monitor the evolution of the metallic layer morphology with in situ time-resolved grazing incidence small-angle X-ray scattering during sputter deposition. We identify the impact of different deposition rates on the growth regimes: the deposition rate affects primarily the nucleation process and the adsorption-mediated growth, whereas rather small effects on diffusion-mediated growth processes are observed. Only at higher rates are initial particle densities higher due to an increasing influence of random nucleation, and an earlier onset of thin film percolation occurs. The obtained results are discussed to identify optimized morphological parameters of the gold cluster ensemble relevant for various applications as a function of the effective layer thickness and deposition rate. Our study opens up new opportunities to improve the fabrication of tailored metal polymer nanostructures for plasmonic-enhanced applications such as organic photovoltaics and sensors.
机译：通过自组装的功能性聚合物金属界面的可再现低成本制造在有机电子和有机光伏中至关重要。特别地，亚麻制醇和纳米血管系统暴露出高度有趣的电气，等离子体和催化性质。利用它们的巨大潜力需要裁缝纳米级和下方的结构。为了在聚合物金属界面上对复杂的纳米结构进化进行全面，我们在溅射沉积期间监测金属层形态的进化与原位时间分辨的放牧发生小角X射线散射。我们确定不同沉积率对生长制度的影响：沉积率主要影响成核过程和吸附介导的生长，而相当观察到对扩散介导的生长过程的小效果。由于随机成核的影响越来越大，仅在较高的速率下初始粒子密度，并且发生薄膜薄膜的早期发作。讨论了所得结果以确定与各种应用相关的金簇合奏的优化形态参数，作为有效层厚度和沉积速率的函数。我们的研究开辟了新的机会，以改善用于等级金属聚合物纳米结构的制造，用于增强诸如有机光伏和传感器等等级增强的应用。

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