Porous Silicon and Graphene Composite Materials for Novel Nanoenergetic Systems

2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2018-10-01 DOI:10.1109/EEXPOLYTECH.2018.8564386

R. Smerdov, A. Mustafaev, Y. Spivak, Vyacheslav Moshnikov, V. Soukhomlinov

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引用次数: 2

Abstract

The potential applications of composite nanostructured materials for PETE (photon-enhanced thermionic emission for solar concentrators) and thermionic plasma energy systems electrode implementation are considered in this study. The investigation of composite porous silicon (PS) and graphene-based structures for PETE and thermionic energy converter (TEC) electrode realization is presented. The origins of low work function effect are considered and interpreted as a repercussion of surface modification and structure alteration on the composite material properties. The significant decrease in the effective electron work function to an anomalously low value of 1 eV is obtained with a perforated nickel anode functionalized with nanosized graphene layers. SEM X-ray microanalysis of the TEC collector surface is performed, the mechanism of the anode work function lowering effect is considered. Raman spectroscopy technique is utilized in order to investigate the surface structure properties of PS-based composite layers (PS/Ag). The interpretation of PS/Ag Raman spectra is proposed.

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新型纳米能系统的多孔硅和石墨烯复合材料

本文研究了复合纳米结构材料在光子增强热离子发射太阳能聚光器和热离子等离子体能量系统电极实现方面的潜在应用。研究了复合多孔硅(PS)和石墨烯基结构用于PETE和热离子能量转换器(TEC)电极的实现。认为低功函数效应的根源是复合材料的表面改性和结构变化对材料性能的影响。通过纳米石墨烯层功能化的穿孔镍阳极，有效电子功函数显著降低至1 eV的异常低值。对TEC集热器表面进行了SEM - x射线微观分析，探讨了其降低阳极功函数的机理。利用拉曼光谱技术对PS/Ag复合材料的表面结构特性进行了研究。提出了PS/Ag拉曼光谱的解释方法。

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2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)

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