Nithya, N (2013) Compositional, Structural and Optical Properties of Cu2+ Doped ZnO Nanocrystalline Thin Films. International Journal of Physical, Chemical & Mathematical Sciences, 2 (2). pp. 45-54. ISSN 2278-683X

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Abstract

Pure ZnO and copper incorporated ZnO thin films with various Cu2+ concentrations have been prepared using a new chemical bath deposition route on glass substrate immersed in ammonium solution bath, in which zinc acetate heptahydrate acts as a complexing agent and urea acts as a source of oxide ions. The chemical composition of films was determined by energy dispersive X-ray analyzer (EDAX). The prepared
films are very close to ZnO stoichiometry and no impurity compounds such as Zn(OH)2 or CuO species were observed. The pure and Cu doped ZnO structures were characterized by X-ray diffraction (XRD), and transmission electron microscopy (TEM). The XRD results revealed that prepared nanocrystalline films have wrutzite structure and the unit cell volume increased with increasing Cu concentration. Optical properties of the synthesized nanocrystalline were investigated by UV-Vis. spectroscopy and room temperature
photoluminescence (PL) spectroscopy. It is seen that the optical band gap increases when the ZnO is doped with
copper. Room temperature PL spectra of these structures showed a strong UV emission peak and a relative broad emission peak, and the UV emission peak of the doped ZnO nanocrystalline films was red-shifted with respect to that of the pure ZnO nanocrystalline film

Item Type: Article
Uncontrolled Keywords: Nanocrystalline film, chemical bath deposition, XRD, UV-Vis., photoluminescence
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 23 Jun 2022 06:37
Last Modified: 23 Jun 2022 06:37
URI: http://ir.psgcas.ac.in/id/eprint/1266

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