Abstract

The results of the formation of an original material based on thin films of metal nanoclusters and the investigation of its chemical composition, surface morphology, and structure are presented. Monodisperse thin films comprised of individual nanoclusters of Ta, Mo, and Ni metals were manufactured by gas-phase magnetron sputtering. Images of the surface were obtained by scanning electron microscopy and it was shown that the Ta and Mo films had a well-developed porous structure and consisted of separate nanoclusters contacting each other only at the interface. The chemical composition of the resulting films immediately after deposition (in situ) and after exposure to the atmosphere (ex situ) was investigated by X-ray photoelectron spectroscopy. It was shown that the exposure to the atmosphere led to the oxidation of the obtained films, namely, to the formation of oxide shells in nanoclusters that formed the films. The possibility of creating thin-film photodetectors based on nanocluster films to detect the decay of isomeric nuclear transition in ²²⁹Th nuclei is discussed.

中文翻译：

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单光子雪崩探测器的薄膜纳米粒子材料的形成

摘要

介绍了基于金属纳米团簇薄膜形成原始材料的结果，并研究了其化学组成，表面形态和结构。通过气相磁控溅射制备由Ta，Mo和Ni金属的单个纳米簇组成的单分散薄膜。表面图像通过扫描电子显微镜获得，并且表明Ta和Mo膜具有发达的多孔结构并且由仅在界面处彼此接触的单独的纳米团簇组成。通过X射线光电子能谱研究了沉积后（原位）和暴露于大气后（原位）的所得膜的化学组成。结果表明，暴露于大气中会导致所得膜的氧化，即 在形成膜的纳米团簇中形成氧化物壳。创建基于纳米团簇薄膜的薄膜光电探测器以检测异构体核跃迁衰减的可能性讨论了²²⁹ Th核。