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基于聚苯乙烯模板上的球形纳壳生长实现 ZnO 和 CeO 涂层 ZnO 纳米结构的增强光学性质

Enhanced Optical Properties of ZnO and CeO-coated ZnO Nanostructures Achieved Via Spherical Nanoshells Growth On A Polystyrene Template.

机构信息

School of Electronic Engineering, National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland.

School of Physical Sciences, National Centre for Plasma Science and Technology, Dublin City University, Glasnevin, Dublin 9, Ireland.

出版信息

Sci Rep. 2017 Jun 16;7(1):3737. doi: 10.1038/s41598-017-03905-4.

DOI:10.1038/s41598-017-03905-4
PMID:28623305
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5473917/
Abstract

In this paper, ZnO, CeO and CeO-coated ZnO nanostructures were synthesised by simple and efficient low temperature wet chemical methods on Si (100) and quartz substrates. The ZnO films were prepared by a drop coating deposition method. This was then combined with a thin layer of the redox active material CeO to form CeO-coated ZnO films. Spherical ZnO nanoshell structures and CeO-coated ZnO nanoshells have been prepared using polystyrene (PS) sphere monolayer templates. The structural properties and morphologies of the nanostructures were analysed by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The nanostructure compositions are studied in more detail using secondary ion mass spectroscopy (SIMS). The optical properties of the nanostructures were measured using ultraviolet-visible (UV-Vis) absorption spectroscopy in order to ascertain the effects of the nanoshell structures and the whispering gallery modes associated with these structures on the optical properties of the deposits. Our data show UV and visible light absorption was very significantly enhanced due to this nanostructuring.

摘要

本文采用简单高效的低温湿化学方法，在 Si(100)和石英衬底上合成了 ZnO、CeO 和 CeO 包覆 ZnO 纳米结构。通过滴涂沉积法制备了 ZnO 薄膜，然后将其与薄层氧化还原活性材料 CeO 结合，形成 CeO 包覆 ZnO 薄膜。使用聚苯乙烯 (PS) 球单层模板制备了球形 ZnO 纳米壳结构和 CeO 包覆 ZnO 纳米壳。通过 X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 分析了纳米结构的结构特性和形貌。使用二次离子质谱 (SIMS) 更详细地研究了纳米结构的组成。通过紫外-可见 (UV-Vis) 吸收光谱测量了纳米结构的光学性质，以确定纳米壳结构和与这些结构相关的 whispering gallery 模式对沉积层光学性质的影响。我们的数据表明，由于这种纳米结构，紫外光和可见光的吸收得到了非常显著的增强。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/40585cc08bb1/41598_2017_3905_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/6a832d84c9bd/41598_2017_3905_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/225a0ddc24c7/41598_2017_3905_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/dd2e118159fd/41598_2017_3905_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/cc2ac1f7b693/41598_2017_3905_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/20cba6d17a43/41598_2017_3905_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/b751dd35a8aa/41598_2017_3905_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/40585cc08bb1/41598_2017_3905_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/6a832d84c9bd/41598_2017_3905_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/225a0ddc24c7/41598_2017_3905_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/dd2e118159fd/41598_2017_3905_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/cc2ac1f7b693/41598_2017_3905_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/20cba6d17a43/41598_2017_3905_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/b751dd35a8aa/41598_2017_3905_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e5ab/5473917/40585cc08bb1/41598_2017_3905_Fig7_HTML.jpg

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