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Structural, optical and electrical characterization of CBD synthesized CdO thin films: influence of deposition time Cover

Structural, optical and electrical characterization of CBD synthesized CdO thin films: influence of deposition time

By: M.R. Das,  A. Mukherjee and  P. Mitra  
Open Access
|Oct 2017

Abstract

Cadmium oxide (CdO) thin films were grown on glass substrates by chemical bath deposition (CBD) method for different deposition times using cadmium acetate as cationic precursor. The structural and optical characterization was carried out using XRD, TEM, and UV-Vis spectrophotometer measurements. Structural analyses with XRD confirmed cubic structure of the CdO. Average particle size estimated from Rietveld refinement method of XRD pattern corresponded well with TEM measurement. The optical band gap varied between 2.35 eV to 2.48 eV with deposition time and an increase in optical band gap with decreasing film thickness was observed. The AC electrical conduction behavior of the CdO film was investigated as a function of temperature as well as frequency. The conductivity measurements indicated localized conduction and hopping of carriers between localized states. The value of real part of dielectric constant was found to decrease with frequency and increase with temperature. The Nyquist plots at different temperatures showed the existence of both grains and grain boundaries contributing to conduction mechanism.

DOI: https://doi.org/10.1515/msp-2017-0063 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 470 - 478
Submitted on: Aug 11, 2016
Accepted on: Jun 28, 2017
Published on: Oct 31, 2017
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 M.R. Das, A. Mukherjee, P. Mitra, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.