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Synthesis and characterization of dandelion-like ZnO nanostructures

X. WANG1,* , Y. WANG1, J. JIA1, Y. TIAN1, L. ZHANG2,3

Affiliation

  1. Key Laboratory of Material Physics, and School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
  2. Postdoctoral research station of material science and engineering, zhengzhou university, Zhengzhou 450001, P. R. China
  3. Xinxiang University, Xinxiang 453002, P. R. China

Abstract

The dandelion-like ZnO nanostructures on silicon substrate were successfully synthesized by a simple thermal evaporation method using Zn and zinc acetate dihydrate as the source materials. Detailed structural characterizations confirm the single-crystalline with wurtzite hexagonal phase and exhibit that they are grown along the [0001] direction. Photoluminescence exhibits a weak UV emission at ~386 nm and a strong green emission at ~495 nm with 325 nm excitation. Field emission measurements demonstrate that the dandelion-like nanostructures possess good performance with a turn-on field of ~1.67 V/μm and a threshold field of ~7.22 V/μm..

Keywords

ZnO, Dandelion-like nanostructure, Optical property, Field emission.

Submitted at: Jan. 27, 2011
Accepted at: March 16, 2011

Citation

X. WANG, Y. WANG, J. JIA, Y. TIAN, L. ZHANG, Synthesis and characterization of dandelion-like ZnO nanostructures, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 3, pp. 227-230 (2011)