کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1547632 | 997638 | 2009 | 4 صفحه PDF | دانلود رایگان |
We report here the realization of a new flower-like bundle of zinc oxide (ZnO) nanosheets through a chemical synthesis route. For structural study and analysis, the fabricated nanostructures were characterized using the X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results of our investigation show a preferential growth by the selective capping of the different non-polar crystal planes in the ZnO nanocrystals. This is caused by the presence of hexamine that induces a preferred shape of the crystals. Our study of optical properties using photoluminescence and UV–visible spectroscopy reveals a strong violet emission which owes to the recombination of an electron in the zinc interstitial and a hole in the valance band. This structure is a new member in ZnO nanoresearch, and we demonstrate the visible emission properties of our chemically synthesized structures. These results should be useful in developing visible light-emitting and/nanophotonic devices.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 41, Issue 4, February 2009, Pages 664–667