氧化铝阳极氧化膜的光学性质

2019 7th International Engineering, Sciences and Technology Conference (IESTEC) Pub Date : 2019-10-01 DOI:10.1109/IESTEC46403.2019.00021

Ivonne Fábrega, Gricelda Bethancour, H. Miranda, E. Obaldía, Eleicer Ching, Ildemán Abrego

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摘要

本文采用电化学阳极氧化技术制备了不同厚度的氧化铝样品。通过扫描电子显微镜(SEM)对试样的形貌进行了表征。利用能量色散Rx (EDX)光谱法确定了形成结构的单个组成，并通过紫外可见区透射率的测量研究了纳米孔膜的光学性质。孔隙直径约为(22.6±4.7)nm，深度为9 ~ 54 mm。在所制备的样品中，在可见光(400 ~ 700 nm)区域的平均透过率约为(50 ~ 74)%。能带隙约为6.5 eV，表明由于氧的空位存在未占据态，起到电子陷阱和空穴的作用。

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Optical Properties in Anodized Aluminum Oxide Films

In this work were prepared samples of aluminum oxide, using electrochemistry technique of anodization obtaining different thicknesses. The morphology of the specimens was characterized through scanning electronic microscopy (SEM). The individual composition of the formed structure was determined using energy dispersive Rx (EDX) spectroscopy and optical properties of Nanoporous films were studied by measurements of transmittance in the region of ultraviolet visible. The diameter of the pores is approximately (22.6 ± 4.7) nm and depth of pores ranging from 9 to 54 mm. For all the prepared samples, the average transmittance in the region of the visible (400-700 nm) is around (50 - 74) %. The energy band gap is approximately in 6.5 eV indicating that exist unoccupied states due to vacancy of oxygen, which function as electron traps and hole.

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2019 7th International Engineering, Sciences and Technology Conference (IESTEC)

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