Viter Roman, Abou Chaaya Adib, Iatsunskyi Igor, Nowaczyk Grzegorz, Kovalevskis Kristaps, Erts Donats, Miele Philippe, Smyntyna Valentyn, Bechelany Mikhael
Department of Experimental Physics, Odessa National I.I. Mechnikov University, 42, Pastera str., 65023 Odessa, Ukraine. Institute of Atomic Physics and Spectroscopy, University of Latvia, 19 Raina Blvd., LV 1586, Riga, Latvia.
Nanotechnology. 2015 Mar 13;26(10):105501. doi: 10.1088/0957-4484/26/10/105501. Epub 2015 Feb 19.
We explored for the first time the ability of a three-dimensional polyacrylonitrile/ZnO material-prepared by a combination of electrospinning and atomic layer deposition (ALD) as a new material with a large surface area-to enhance the performance of optical sensors for volatile organic compound (VOC) detection. The photoluminescence (PL) peak intensity of these one-dimensional nanostructures has been enhanced by a factor of 2000 compared to a flat Si substrate. In addition, a phase transition of the ZnO ALD coating from amorphous to crystalline has been observed due to the properties of a polyacrylonitrile nanofiber template: surface strain, roughness, and an increased number of nucleation sites in comparison with a flat Si substrate. The greatly improved PL performance of these nanostructured surfaces could produce exciting materials for implantation in VOC optical sensor applications.
我们首次探索了通过静电纺丝和原子层沉积（ALD）相结合制备的三维聚丙烯腈/氧化锌材料作为一种具有大表面积的新型材料，以增强用于挥发性有机化合物（VOC）检测的光学传感器性能的能力。与平坦的硅基板相比，这些一维纳米结构的光致发光（PL）峰值强度提高了2000倍。此外，由于聚丙烯腈纳米纤维模板的特性：表面应变、粗糙度以及与平坦硅基板相比增加的成核位点数量，观察到氧化锌ALD涂层从非晶态到晶态的相变。这些纳米结构表面大大改善的PL性能可为植入VOC光学传感器应用中生产出令人兴奋的材料。
