Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7943348 | Superlattices and Microstructures | 2013 | 10 Pages |
Abstract
In this paper, we have reported the structural, optical and ferroelectric properties of copper oxide nanostructures synthesized by hydrothermal method at different selected pH values ranging from 4 to 12. The synthesized nanostructures were characterized for structural properties by X-ray diffractrometer and transmission electron microscopy and the optical properties were carried out through UV-visible, Photoluminescence and Raman spectroscopy. The study of X-ray diffractrometer pattern indicates the pure phase formation of CuO and Transmission electron microscopy images show the structural changes from nanorods to rectangular nanoflakes for samples synthesized at higher pH values. Raman and Photoluminescence spectrum also confirm the phase formation of CuO nanostructures. Moreover, the optical band gaps calculated through UV-visible spectroscopy are found to be increases from 2.90 to 3.60Â eV for samples synthesized at pH values from 4 to 12 respectively. Furthermore, a weak ferroelectricty has been observed for pH 10 and 12 samples at room temperature through Polarization vs Electric field (P-E) loops.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Prakash Chand, Anurag Gaur, Ashavani Kumar,