Abstract

Results of a study of the electronic structure and optical properties of a novel material based on thin films comprised of Mo nanoclusters obtained by gas-phase magnetron sputtering are presented. The chemical composition of the obtained films immediately after deposition (in situ) and upon exposure to the atmosphere (ex situ) was investigated by X-ray photoelectron spectroscopy. It is shown that exposure to the atmosphere leads to “core–shell” oxidation of the nanoclusters the obtained films are composed of and changes in the valence band. The change in the electronic structure of the obtained films was investigated by spectro-scopy of the characteristic energy losses of electrons. The optical properties of the obtained films were investigated in the wavelength range of 185–800 nm. The possibility of creating thin-film photodetectors based on the obtained Mo nanocluster films for detecting isomeric nuclear transition decay in ²²⁹Th nuclei is discussed.

中文翻译：

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用于单光子紫外探测器的纳米簇钼薄膜的电子和光学性质

摘要

提出了一种新型材料的电子结构和光学性质的研究结果，该新型材料基于通过气相磁控溅射获得的由Mo纳米团簇组成的薄膜。通过X射线光电子能谱研究在沉积之后（原位）和暴露于大气中（非原位）后立即获得的膜的化学组成。结果表明，暴露于大气中会导致纳米团簇的“核-壳”氧化，所得薄膜由价带组成并在价带上发生变化。通过光谱分析电子的特征能量损失来研究获得的膜的电子结构的变化。在185-800 nm的波长范围内研究了所得薄膜的光学特性。讨论了²²⁹ Th核。