ABSTRACT In this work, double plasmon resonances in hybrid structures comprising Ag nanoparticles (NPs) and amorphous hydrogenated carbon films (a-C:H) have been studied. Granulated silver films with a gravimetric thickness of 10 nm were thermally deposited on top or underneath a-C:H films fabricated by plasma-assisted chemical vapour deposition on a quartz substrate. Two plasmon bands with comparable intensities have been observed in the hybrid structures optical density spectrum after annealing at 200°C. On the other hand, in the absence of the amorphous hydrogenated carbon film the short-wavelength peak in the optical density spectrum of the same Ag film is hardly observable. In addition, plasmon-enhanced photoluminescence of the a-C:H film being excited close to the spectral dip at the wavelength of 405 nm was observed. The nature of double plasmon resonance spectra were discussed and explained by the resonance interaction of plasmons excited in Ag NPs with excitons in a-C:H. GRAPHICAL ABSTRACT

中文翻译：

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银纳米粒子与无定形氢化碳混合结构中的双等离子体共振

摘要 在这项工作中，研究了包含银纳米粒子 (NPs) 和无定形氢化碳膜 (aC:H) 的混合结构中的双等离子体共振。在石英衬底上通过等离子体辅助化学气相沉积制造的 aC:H 薄膜的顶部或下方热沉积重量厚度为 10 nm 的粒状银薄膜。在 200°C 退火后，在混合结构的光密度谱中观察到了两个强度相当的等离子体带。另一方面，在没有非晶氢化碳膜的情况下，几乎看不到同一Ag膜的光密度谱中的短波长峰。此外，观察到 aC:H 膜的等离子体增强光致发光在 405 nm 波长的光谱倾角附近被激发。通过在 Ag NPs 中激发的等离子体与 aC:H 中的激子的共振相互作用，讨论和解释了双等离子体共振光谱的性质。图形概要