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

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.

Cobalt Effect on the Growth of Cadmium Oxide Nanostructure Prepared by Spray Pyrolysis Technique

“…Table 2 shows a decrease in , which resulted in a rise in the intensity of dominant peaks, consistent with the Ref. (11,20) indicating the improvement in the crystalline growth of the deposited atoms accompanied by an increase in crystallite size with increasing of Co doping concentration, a similar result obtained by the researcher (21). The CdO:Co nanostructure at 5% exhibited a larger crystallite size, it found about 11.1 nm, while it was 8.4 nm and and 9.9 nm for undoped and 3% Co-doped respectively, as shown in Table 2.…”

“…Usharani et al (7) explored the possibility using cadmium oxide thin films in optical applications using the spray pyrolysis technique and the effect of substrate temperature on the optical and structural properties of these films on a glass substrate in 2015. In 2017, M. R. DAS et al (11) assessed the effect of deposition time on the structural and electrical properties of cadmium oxide thin films on a glass substrate using chemical bath deposition technique (CBD). A.…”

Effect of yttrium(Y) on structural, morphological and transport properties of CdO thin films prepared by spray pyrolysis technique

“…Transparent conducting CdO films have been fabricated by numerous methods, such as sol-gel [18] , metal organic chemical vapor deposition (MOCVD) [19] , molecular beam epitaxy [20] , sputtering [21] , pulsed laser deposition [22] , thermal decomposition technique [23] , chemical bath deposition [24] and spray pyrolysis technique [25] . Moreover, Y: CdO thin films by MOCVD and sol-gel spin coating techniques [ 26 , 27 ] have been reported.…”

Synthesis and Characterisation of Structural and Electrical Properties of CuMn2O4 Spinel Compound

“…Figure 4 shows the exponentially decreasing of CuMn 2 O 4 resistance. To extract the activation energy, the data were analyzed by using the relation (Das et al, 2017;Ubale et al, 2014;Deshpande et al, 2018):…”