Department of Chemistry
The synthesisi of novel ZnO microcrystals through a simple solvothermal method and their optical properities
ZnO microcrystals with novel structures have been synthesized by a solvothermal method that is facile, low-cost and environment-friendly. Zn(NO3)2·6H2O is the only precursor and absolute ethanol is the solvent. By controlling the reaction time, temperature and molarity of zinc nitrate, ZnO entities with the shape of flower, nut, hexagon-pillar, popcorn, brush and sphere can be synthesized in high selectivity. The ZnO micronuts (length ∼8 μm and width ∼5 μm) are uniform in morphology, displaying an open gap on the surface that divides the body into two. The investigation on the optical properties of the ZnO microcrystals reveals that all the ZnO samples exhibit an excitonic absorption edge around 376 nm, and compared to bulk ZnO, there is a modest red shift of ∼6 nm that can be ascribed to size effect as well as the unique morphologies of the ZnO microcrystals. © 2010 Elsevier B.V. All rights reserved.
Chemical synthesis, Crystal growth, Luminescence, Semiconductors
Source Publication Title
Journal of Alloys and Compounds
Yang, Zai-Xing, Xin Du, Wei Zhong, Yan-Xue Yin, Mei-Hua Xu, Chaktong Au, and You-Wei Du. "The synthesisi of novel ZnO microcrystals through a simple solvothermal method and their optical properities." Journal of Alloys and Compounds 509.7 (2011): 3403-3408.