Microstructures and Photoluminescence Properties of Three-Dimensional Multi-Layered ZnO Flowers by Surfactant-Free Hydrothermal Method
Authors: Xu, Lingling; Gao, Hong; Li, Zeming; Lv, Wei; Liu, Jia
Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 12, December 2011 , pp. 10940-10944(5)
Publisher: American Scientific Publishers
Abstract:In this paper, a large-scale of three-dimensional multi-layered ZnO flowers constructed by porous nanosheets were fabricated on Zn foils through a surfactant-free hydrothermal method. The morphology and microstructures of precursors and the mesoporous ZnO flowers were revealed by scanning electron microscopy. Based on the urea hydrolyzation, a possible growth mechanism of etching-deposition was proposed. The quantities and sizes of ZnO petals can be turned by urea concentration variations. The optical properties of the multi-layered ZnO flowers prepared with variety urea contents were also investigated by room temperature photoluminescence spectroscopy and showed the lower urea added sample has better crystalline quality.
Document Type: Research Article
Publication date: December 2011
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