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  • Title: Ultrasonic induced photoluminescence decay in sonochemically obtained cauliflower-like ZnO nanostructures with surface 1D nanoarrays.
    Author: Mazloumi M, Zanganeh S, Kajbafvala A, Ghariniyat P, Taghavi S, Lak A, Mohajerani M, Sadrnezhaad SK.
    Journal: Ultrason Sonochem; 2009 Jan; 16(1):11-4. PubMed ID: 18603463.
    Abstract:
    Cauliflower-like ZnO nanostructures with average crystallite size of about 55 nm which have surface one dimensional (1D) nanoarrays with 10 nm diameter were successfully fabricated through a simple sonochemical route. X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and room temperature photoluminescence (PL) characterizations were performed to investigate the morphological and structural properties of the obtained nanostructures. It has been shown that the synthesized cauliflower-like ZnO nanostructures irradiated UV luminescence and a green peak in visible band. Ultrasonic post-treatment of the particles for about 2 h increased the density of surface defects resulted in an increase in the green emission intensity.
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